Final California 2024 Integrated Report (303(d) List/305(b) Report)

Supporting Information

Regional Board 4 - Los Angeles Region

Water Body Name:	Channel Islands Harbor
Water Body ID:	CAB4031100019990204112803
Water Body Type:	Bay & Harbor


DECISION ID	135672	Region 4
Channel Islands Harbor

Pollutant:	Lead
Final Listing Decision:	Delist from 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Delist from 303(d) list (TMDL required list)(2018)
Revision Status	Revised
Reason for Delisting:	Applicable WQS attained; reason for recovery unspecified
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status. 3 lines of evidence are available in the administrative record to assess this pollutant. 0 of the 28 samples exceed the MAR criteria for lead (dissolved). 0 of the 18 samples exceed the guideline for lead in sediment. 0 of the 5 samples exceed the objective for sediment toxicity. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the CWA section 303(d) List in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. 0 of 28, 0 of 18 and 0 of 5 samples exceeded the objectives, guidelines and criteria and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.

Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because applicable water quality standards are not being exceeded.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.

Line of Evidence (LOE) for Decision ID 135672, Lead	Region 4
Channel Islands Harbor

LOE ID:

28210

Pollutant:

Lead

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

None

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

Chemical monitoring of sediments

Data Used to Assess Water Quality:

Zero out of one samples exceeded the probable effects level for lead. Sediment samples were taken and analyzed for lead in accordance with the Southern California Bight 2003 Regional Marine Monitoring Survey monitoring and testing parameters.

Data Reference:

Southern California Bight 2003 Regional Marine Monitoring Survey Data

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Basin Plan states that, "[s]urface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use."

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

MacDonald et. al. lists a sediment probable effects level of 112.18 ug/g dry weight for lead.

Guideline Reference:

Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278

Spatial Representation:

Sampling was conducted in Channel Islands Harbor at station 4131 (Lat: 34.1623250326, Long: (-119.224169922).

Temporal Representation:

Grab samples were taken and analyzed on 07/22/2003.

Environmental Conditions:

QAPP Information:

Data was collected in compliance with the sampling and monitoring procedures detailed in Southern California Bight 2003 Regional Marine Monitoring Survey Quality Assurance Manual.

QAPP Information Reference(s):

Southern California Bight 2003 Regional Marine Monitoring Survey (Bight 03) Quality Assurance Manual

Line of Evidence (LOE) for Decision ID 135672, Lead	Region 4
Channel Islands Harbor

LOE ID:

28206

Pollutant:

Lead

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

None

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

Chemical monitoring of sediments

Data Used to Assess Water Quality:

One of two samples exceeded the probable effects level for lead. Sediment samples were taken and analyzed for lead in accordance with the Bay Protection Toxic Cleanup Program monitoring and testing parameters.

Data Reference:

Zinc and Lead sediment data for Channel Islands Harbor. Bay Protection Toxics Clean Program

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Basin Plan states that, "[s]urface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use."

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

MacDonald et. al. lists a sediment probable effects level of 112.18 ug/g dry weight for lead.

Guideline Reference:

Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278

Spatial Representation:

State Board conducted sampling in Channel Islands Harbor at the following stations: 623 (lat: 34.17, long: -119.227222) and 1702 (lat: 34.1661667, long: -119.2247).

Temporal Representation:

Grab samples were taken and analyzed 01/13/1993 and 02/03/1997.

Environmental Conditions:

QAPP Information:

Data was collected in compliance with the sampling and monitoring procedures detailed in Bay Protection Toxic Cleanup Program Quality Assurance Plan.

QAPP Information Reference(s):

Bay Protection and Toxic Cleanup Program QAPP. (BPTCP). Sacramento, CA: State Water Resources Control Board

Line of Evidence (LOE) for Decision ID 135672, Lead	Region 4
Channel Islands Harbor

LOE ID:

28209

Pollutant:

Lead

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

None

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

Chemical monitoring of sediments

Data Used to Assess Water Quality:

Zero out of four samples exceeded the probable effects level for lead. Sediment samples were taken and analyzed for lead in accordance with the Southern California Bight 1998 Regional Marine Monitoring Survey monitoring and testing parameters.

Data Reference:

Southern CA Bight 1998 Regional Marine Monitoring Survey Data

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Basin Plan states that, "[s]urface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use."

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

MacDonald et. al. lists a sediment probable effects level of 112.18 ug/g dry weight for lead.

Guideline Reference:

Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278

Spatial Representation:

Sampling was conducted in Channel Islands Harbor at the following stations: 2129, 2130, 2131, and 2132.

Temporal Representation:

Grab samples were taken and analyzed on 07/24/1998.

Environmental Conditions:

QAPP Information:

Data was collected in compliance with the sampling and monitoring procedures detailed in Southern California Bight 1998 Regional Marine Monitoring Survey Quality Assurance Manual.

QAPP Information Reference(s):

Southern California Bight 1998 Regional Marine Monitoring Survey (Bight 98) Quality Assurance Manual

Line of Evidence (LOE) for Decision ID 135672, Lead	Region 4
Channel Islands Harbor

LOE ID:

83686

Pollutant:

Lead

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Boardstaff assessed SWAMP data for Channel Islands Harbor to determine beneficial use support and results are as follows: 0 of 5 samples exceed the criterion for Lead.

Data Reference:

RWB4 Miscellaneous Ventura Coastal 2006

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Water Quality Control Plan for the Los Angeles Region (LARWQCB 2004): All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

In marine and estuarine sediments the probable effect level (predictive of sediment toxicity for sediment-dwelling organisms) for Lead is 112.18 ug/g dry weight (MacDonald et al., 1996).

Guideline Reference:

Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278

Spatial Representation:

Data for this line of evidence for Channel Islands Harbor was collected at 5 monitoring sites [ Channel Islands Harbor 5 station (410VHCHN5)., Channel Islands Harbor 4 station (410VHCHN4)., Channel Islands Harbor 1 station (410VHCHN1)., Channel Islands Harbor 2 station (410VHCHN2)., Channel Islands Harbor 3 station (410VHCHN3).]

Temporal Representation:

Data was collected over the time period 10/11/2006-10/12/2006.

Environmental Conditions:

Staff is not aware of any special conditions that might affect interpretation of the data.

QAPP Information:

2002 QAMP (Quality Assurance Management Plan) for the State of California's Surface Water Ambient Monitoring Program

QAPP Information Reference(s):

Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version)

Line of Evidence (LOE) for Decision ID 135672, Lead	Region 4
Channel Islands Harbor

LOE ID:

4083

Pollutant:

Lead (sediment)

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Not Recorded

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

Not Specified

Data Used to Assess Water Quality:

Unspecified--This LOE is a placeholder to support a 303(d) listing decision made prior to 2006.

Data Reference:

Placeholder reference pre-2006 303(d)

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Unspecified

Objective/Criterion Reference:

Placeholder reference pre-2006 303(d)

Evaluation Guideline:

Unspecified

Guideline Reference:

Placeholder reference pre-2006 303(d)

Spatial Representation:

Unspecified

Temporal Representation:

Unspecified

Environmental Conditions:

Unspecified

QAPP Information:

Unspecified

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 135672, Lead	Region 4
Channel Islands Harbor

LOE ID:

249004

Pollutant:

Lead

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Southern California Bight Project 2018 data for Channel Islands Harbor to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for Lead .

Data Reference:

WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The evaluation guideline for lead is the probable effect level (PEL) of 112 mg/kg dry weight (MacDonald et al., 1996).

Guideline Reference:

Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278

Spatial Representation:

Data were collected from 1 station(s). Station Code(s): B18-10046 (B18-10046).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-08-18 to 2018-08-18

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 135672, Lead	Region 4
Channel Islands Harbor

LOE ID:

262929

Pollutant:

Lead

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Lead.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved lead criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 8.1 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-22 (Oxn_CI-22_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135672, Lead	Region 4
Channel Islands Harbor

LOE ID:

248872

Pollutant:

Lead

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed SWAMP RWB4 Monitoring data for Channel Islands Harbor to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for Lead .

Data Reference:

Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The evaluation guideline for lead is the probable effect level (PEL) of 112 mg/kg dry weight (MacDonald et al., 1996).

Guideline Reference:

Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278

Spatial Representation:

Data were collected from 1 station(s). Station Code(s): 410CHN003 (Channel Islands Harbor CI3).

Temporal Representation:

Data for this waterbody were collected over the date range 2017-05-24 to 2017-05-24

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 135672, Lead	Region 4
Channel Islands Harbor

LOE ID:

249310

Pollutant:

Lead

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The evaluation guideline for lead is the probable effect level (PEL) of 112 mg/kg dry weight (MacDonald et al., 1996).

Guideline Reference:

Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278

Spatial Representation:

Data were collected from 1 station(s). Station Code(s): 410CHN001 (Channel Islands Harbor CI1).

Temporal Representation:

Data for this waterbody were collected over the date range 2017-05-24 to 2017-05-24

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 135672, Lead	Region 4
Channel Islands Harbor

LOE ID:

249177

Pollutant:

Lead

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The evaluation guideline for lead is the probable effect level (PEL) of 112 mg/kg dry weight (MacDonald et al., 1996).

Guideline Reference:

Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278

Spatial Representation:

Data were collected from 1 station(s). Station Code(s): 410CHN005 (Channel Islands Harbor CI5).

Temporal Representation:

Data for this waterbody were collected over the date range 2017-05-24 to 2017-05-24

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 135672, Lead	Region 4
Channel Islands Harbor

LOE ID:

249175

Pollutant:

Lead

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The evaluation guideline for lead is the probable effect level (PEL) of 112 mg/kg dry weight (MacDonald et al., 1996).

Guideline Reference:

Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278

Spatial Representation:

Data were collected from 1 station(s). Station Code(s): 410CHN002 (Channel Islands Harbor CI2).

Temporal Representation:

Data for this waterbody were collected over the date range 2017-05-24 to 2017-05-24

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 135672, Lead	Region 4
Channel Islands Harbor

LOE ID:

263122

Pollutant:

Lead

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved lead criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 8.1 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-06 (Oxn_CI-06_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-09 and 2018-10-09

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135672, Lead	Region 4
Channel Islands Harbor

LOE ID:

263117

Pollutant:

Lead

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved lead criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 8.1 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-20 (Oxn_CI-20_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135672, Lead	Region 4
Channel Islands Harbor

LOE ID:

262653

Pollutant:

Lead

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved lead criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 8.1 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-12 (Oxn_CI-12_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135672, Lead	Region 4
Channel Islands Harbor

LOE ID:

262650

Pollutant:

Lead

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved lead criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 8.1 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-24 (Oxn_CI-24_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135672, Lead	Region 4
Channel Islands Harbor

LOE ID:

262902

Pollutant:

Lead

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved lead criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 8.1 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-17 (Oxn_CI-17_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135672, Lead	Region 4
Channel Islands Harbor

LOE ID:

262899

Pollutant:

Lead

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved lead criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 8.1 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-02 (Oxn_CI-02_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135672, Lead	Region 4
Channel Islands Harbor

LOE ID:

262802

Pollutant:

Lead

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved lead criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 8.1 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-19 (Oxn_CI-19_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135672, Lead	Region 4
Channel Islands Harbor

LOE ID:

262990

Pollutant:

Lead

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved lead criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 8.1 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-16 (Oxn_CI-16_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135672, Lead	Region 4
Channel Islands Harbor

LOE ID:

262797

Pollutant:

Lead

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved lead criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 8.1 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-27 (Oxn_CI-27_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135672, Lead	Region 4
Channel Islands Harbor

LOE ID:

262886

Pollutant:

Lead

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved lead criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 8.1 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-26 (Oxn_CI-26_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135672, Lead	Region 4
Channel Islands Harbor

LOE ID:

262710

Pollutant:

Lead

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved lead criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 8.1 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-25 (Oxn_CI-25_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135672, Lead	Region 4
Channel Islands Harbor

LOE ID:

263078

Pollutant:

Lead

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved lead criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 8.1 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-08 (Oxn_CI-08_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135672, Lead	Region 4
Channel Islands Harbor

LOE ID:

262707

Pollutant:

Lead

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved lead criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 8.1 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-14 (Oxn_CI-14_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135672, Lead	Region 4
Channel Islands Harbor

LOE ID:

262782

Pollutant:

Lead

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved lead criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 8.1 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-21 (Oxn_CI-21_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135672, Lead	Region 4
Channel Islands Harbor

LOE ID:

262865

Pollutant:

Lead

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved lead criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 8.1 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-07 (Oxn_CI-07_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135672, Lead	Region 4
Channel Islands Harbor

LOE ID:

263054

Pollutant:

Lead

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved lead criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 8.1 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-10 (Oxn_CI-10_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135672, Lead	Region 4
Channel Islands Harbor

LOE ID:

262950

Pollutant:

Lead

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved lead criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 8.1 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-15 (Oxn_CI-15_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135672, Lead	Region 4
Channel Islands Harbor

LOE ID:

262846

Pollutant:

Lead

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved lead criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 8.1 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-13 (Oxn_CI-13_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135672, Lead	Region 4
Channel Islands Harbor

LOE ID:

262844

Pollutant:

Lead

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved lead criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 8.1 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-11 (Oxn_CI-11_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135672, Lead	Region 4
Channel Islands Harbor

LOE ID:

262762

Pollutant:

Lead

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved lead criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 8.1 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-31 (Oxn_CI-31_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135672, Lead	Region 4
Channel Islands Harbor

LOE ID:

263040

Pollutant:

Lead

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved lead criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 8.1 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-03 (Oxn_CI-03_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135672, Lead	Region 4
Channel Islands Harbor

LOE ID:

262944

Pollutant:

Lead

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved lead criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 8.1 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-18 (Oxn_CI-18_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135672, Lead	Region 4
Channel Islands Harbor

LOE ID:

262843

Pollutant:

Lead

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved lead criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 8.1 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-23 (Oxn_CI-23_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135672, Lead	Region 4
Channel Islands Harbor

LOE ID:

263141

Pollutant:

Lead

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved lead criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 8.1 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-09 (Oxn_CI-09_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135672, Lead	Region 4
Channel Islands Harbor

LOE ID:

248886

Pollutant:

Lead

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The evaluation guideline for lead is the probable effect level (PEL) of 112 mg/kg dry weight (MacDonald et al., 1996).

Guideline Reference:

Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278

Spatial Representation:

Data were collected from 1 station(s). Station Code(s): 410CHN004 (Channel Islands Harbor CI4).

Temporal Representation:

Data for this waterbody were collected over the date range 2017-05-24 to 2017-05-24

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 135672, Lead	Region 4
Channel Islands Harbor

LOE ID:

83620

Pollutant:

Toxicity

LOE Subgroup:

Toxicity

Matrix:

Sediment

Fraction:

None

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

TOXICITY TESTING

Data Used to Assess Water Quality:

Five samples were collected to evaluate sediment toxicity. None of the samples exhibited significant toxicity. The toxicity test included survival of Eohaustorius estuarius. The two test results that showed significant toxicity were due to interference with the salinity in the sample (QACode VTW). One sample can have multiple toxicity test results but will be counted only once. One sample is defined as being collected on the same day at the same location with the same lab sample id (if provided).

Data Reference:

RWB4 Miscellaneous Ventura Coastal 2006

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life. Region 4 Basin Plan.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Toxicity is defined as a statistically significant effect in the sample exposure compared to the control using EPA-recommended hypothesis testing. For SWAMP data exceedances are counted with the significant effect code SL. SL is defined as the result being significant compared to the negative control based on a statistical test, less than stated the alpha level, AND less than the evaluation threshold.

Guideline Reference:

Revised approach to toxicity test acceptability criteria using a statistical performance assessment. Environmental Toxicology and Chemistry, vol. 16, No. 6, pp 1322¿1329

Spatial Representation:

The samples were collected at stations 410VHCHN1, 410VHCHN2, 410VHCHN3, 410VHCHN4, and 410VHCHN5.

Temporal Representation:

The samples were collected in October 2006.

Environmental Conditions:

QAPP Information:

Data quality is good. Data results were recorded in the SWAMP database and follwed SWAMP protocols.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 135672, Lead	Region 4
Channel Islands Harbor

LOE ID:

28214

Pollutant:

Lead

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

Fixed station physical/chemical (conventional plus toxic pollutants)

Data Used to Assess Water Quality:

Zero of three samples exceeded the criterion continuous concentrations for lead. Water quality samples were taken and analyzed for lead in accordance with the Southern California Bight 1998 Regional Marine Monitoring Survey monitoring and testing parameters.

Data Reference:

Southern CA Bight 1998 Regional Marine Monitoring Survey Chemistry Data

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The California Toxics Rule lists criterion continuous concentrations of 8.1 ug/L for lead to protect aquatic life in marine waters.

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Sampling was conducted in Channel Islands Harbor at the following stations: 2129, 2130, and 2131.

Temporal Representation:

Grab samples were taken and analyzed on 07/24/1998.

Environmental Conditions:

QAPP Information:

Data was collected in compliance with the sampling and monitoring procedures detailed in Southern California Bight 1998 Regional Marine Monitoring Survey Quality Assurance Manual.

QAPP Information Reference(s):

Southern California Bight 1998 Regional Marine Monitoring Survey (Bight 98) Quality Assurance Manual


DECISION ID	135711	Region 4
Channel Islands Harbor

Pollutant:	Zinc
Final Listing Decision:	Delist from 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Delist from 303(d) list (TMDL required list)(2018)
Revision Status	Revised
Reason for Delisting:	Applicable WQS attained; reason for recovery unspecified
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	This pollutant is being considered for removal from the CWA section 303(d) List under section 4.1 of the Listing Policy. Under this section a single line of evidence is necessary to assess listing status. 3 lines of evidence are available in the administrative record to assess this pollutant. 1 of the 28 samples exceeded the criteria for zinc in water. 0 of the 7 samples exceeded the guideline for zinc in sediment. 1 of the 11 samples exceeded the guideline for zinc in sediment. LOE 4084 is a placeholder for a decision made prior to 2006 that is not held in this assessment database. It will not be used for assessment because the other data are sufficient to determine beneficial use support. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification for removing this water segment-pollutant combination from the CWA section 303(d) List. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. 1 of 28 samples exceeded the criteria for zinc in water and 0 of 7 and 0 of 11 samples exceeded the guideline for zinc in sediment and this does not exceed the allowable frequency listed in Table 4.1 of the Listing Policy. 4. Pursuant to section 4.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.

Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should be removed from the section 303(d) list because applicable water quality standards for the pollutant are not being exceeded.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.

Line of Evidence (LOE) for Decision ID 135711, Zinc	Region 4
Channel Islands Harbor

LOE ID:

251313

Pollutant:

Zinc

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The evaluation guideline for zinc is the effects range median value of 410 PPM (ug/g) dry weight (Long et al., 1995).

Guideline Reference:

Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278

Spatial Representation:

Data were collected from 1 station(s). Station Code(s): 410CHN002 (Channel Islands Harbor CI2).

Temporal Representation:

Data for this waterbody were collected over the date range 2017-05-24 to 2017-05-24

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 135711, Zinc	Region 4
Channel Islands Harbor

LOE ID:

268503

Pollutant:

Zinc

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved zinc criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 81 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-20 (Oxn_CI-20_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135711, Zinc	Region 4
Channel Islands Harbor

LOE ID:

268394

Pollutant:

Zinc

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved zinc criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 81 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-07 (Oxn_CI-07_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135711, Zinc	Region 4
Channel Islands Harbor

LOE ID:

268385

Pollutant:

Zinc

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved zinc criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 81 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-27 (Oxn_CI-27_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135711, Zinc	Region 4
Channel Islands Harbor

LOE ID:

268382

Pollutant:

Zinc

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved zinc criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 81 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-02 (Oxn_CI-02_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135711, Zinc	Region 4
Channel Islands Harbor

LOE ID:

268485

Pollutant:

Zinc

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support and results are as follows: 1 of 1 samples exceeded the water quality threshold for Zinc.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved zinc criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 81 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-23 (Oxn_CI-23_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135711, Zinc	Region 4
Channel Islands Harbor

LOE ID:

268380

Pollutant:

Zinc

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved zinc criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 81 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-31 (Oxn_CI-31_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135711, Zinc	Region 4
Channel Islands Harbor

LOE ID:

268484

Pollutant:

Zinc

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved zinc criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 81 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-24 (Oxn_CI-24_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135711, Zinc	Region 4
Channel Islands Harbor

LOE ID:

268483

Pollutant:

Zinc

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved zinc criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 81 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-10 (Oxn_CI-10_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135711, Zinc	Region 4
Channel Islands Harbor

LOE ID:

268367

Pollutant:

Zinc

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved zinc criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 81 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-08 (Oxn_CI-08_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135711, Zinc	Region 4
Channel Islands Harbor

LOE ID:

268477

Pollutant:

Zinc

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved zinc criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 81 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-19 (Oxn_CI-19_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135711, Zinc	Region 4
Channel Islands Harbor

LOE ID:

268364

Pollutant:

Zinc

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved zinc criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 81 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-17 (Oxn_CI-17_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135711, Zinc	Region 4
Channel Islands Harbor

LOE ID:

28213

Pollutant:

Zinc

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

Fixed station physical/chemical (conventional plus toxic pollutants)

Data Used to Assess Water Quality:

Zero of three samples exceeded the criterion continuous concentrations for zinc. Water quality samples were taken and analyzed for zinc in accordance with the Southern California Bight 1998 Regional Marine Monitoring Survey monitoring and testing parameters.

Data Reference:

Southern CA Bight 1998 Regional Marine Monitoring Survey Chemistry Data

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The California Toxics Rule lists criterion continuous concentrations of 81 ug/L for zinc to protect aquatic life in marine waters.

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Sampling was conducted in Channel Islands Harbor at the following stations: 2129, 2130, and 2131.

Temporal Representation:

Grab samples were taken and analyzed on 07/24/1998.

Environmental Conditions:

QAPP Information:

Data was collected in compliance with the sampling and monitoring procedures detailed in Southern California Bight 1998 Regional Marine Monitoring Survey Quality Assurance Manual.

QAPP Information Reference(s):

Southern California Bight 1998 Regional Marine Monitoring Survey (Bight 98) Quality Assurance Manual

Line of Evidence (LOE) for Decision ID 135711, Zinc	Region 4
Channel Islands Harbor

LOE ID:

28212

Pollutant:

Zinc

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

None

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

Fixed station physical/chemical (conventional plus toxic pollutants)

Data Used to Assess Water Quality:

Zero out of one sample exceeded the effects range median for zinc. Sediment samples were taken and analyzed for zinc in accordance with the Southern California Bight 2003 Regional Marine Monitoring Survey monitoring and testing parameters.

Data Reference:

Southern California Bight 2003 Regional Marine Monitoring Survey Data

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Basin Plan states that, "[s]urface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use."

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Long et. al. lists a sediment effects range median of 410 ug/g dry weight for zinc.

Guideline Reference:

Incidence of adverse biological effects within ranges of chemical concentrations in marine and estuary sediments. Environmental Management. 19, (1): 81-97

Spatial Representation:

Sampling was conducted in Channel Islands Harbor at station 4131 (Lat: 34.1623250326, Long: (-119.224169922).

Temporal Representation:

Grab samples were taken and analyzed on 07/22/2003.

Environmental Conditions:

QAPP Information:

Data was collected in compliance with the sampling and monitoring procedures detailed in Southern California Bight 2003 Regional Marine Monitoring Survey Quality Assurance Manual.

QAPP Information Reference(s):

Southern California Bight 2003 Regional Marine Monitoring Survey (Bight 03) Quality Assurance Manual

Line of Evidence (LOE) for Decision ID 135711, Zinc	Region 4
Channel Islands Harbor

LOE ID:

28207

Pollutant:

Zinc

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

None

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

Chemical monitoring of sediments

Data Used to Assess Water Quality:

Zero out of two samples exceeded the effects range median for zinc. Sediment samples were taken and analyzed for zinc in accordance with the Bay Protection Toxic Cleanup Program monitoring and testing parameters.

Data Reference:

Zinc and Lead sediment data for Channel Islands Harbor. Bay Protection Toxics Clean Program

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Basin Plan states that, "[s]urface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use."

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Long et. al. lists a sediment effects range median of 410 ug/g dry weight for zinc.

Guideline Reference:

Incidence of adverse biological effects within ranges of chemical concentrations in marine and estuary sediments. Environmental Management. 19, (1): 81-97

Spatial Representation:

State Board conducted sampling in Channel Islands Harbor at the following stations: 623 (lat: 34.17, long: -119.227222) and 1702 (lat: 34.1661667, long: -119.2247).

Temporal Representation:

Grab samples were taken and analyzed 01/13/1993 and 02/03/1997.

Environmental Conditions:

QAPP Information:

Data was collected in compliance with the sampling and monitoring procedures detailed in Bay Protection Toxic Cleanup Program Quality Assurance Plan.

QAPP Information Reference(s):

Bay Protection and Toxic Cleanup Program QAPP. (BPTCP). Sacramento, CA: State Water Resources Control Board

Line of Evidence (LOE) for Decision ID 135711, Zinc	Region 4
Channel Islands Harbor

LOE ID:

28211

Pollutant:

Zinc

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

None

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

Chemical monitoring of sediments

Data Used to Assess Water Quality:

Zero out of four samples exceeded the effects range median for zinc. Sediment samples were taken and analyzed for zinc in accordance with the Southern California Bight 1998 Regional Marine Monitoring Survey monitoring and testing parameters.

Data Reference:

Southern CA Bight 1998 Regional Marine Monitoring Survey Data

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Basin Plan states that, "[s]urface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use."

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Long et. al. lists a sediment effects range median of 410 ug/g dry weight for zinc.

Guideline Reference:

Incidence of adverse biological effects within ranges of chemical concentrations in marine and estuary sediments. Environmental Management. 19, (1): 81-97

Spatial Representation:

Sampling was conducted in Channel Islands Harbor at the following stations: 2129, 2130, 2131, and 2132.

Temporal Representation:

Grab samples were taken and analyzed on 07/24/1998.

Environmental Conditions:

QAPP Information:

Data was collected in compliance with the sampling and monitoring procedures detailed in Southern California Bight 1998 Regional Marine Monitoring Survey Quality Assurance Manual.

QAPP Information Reference(s):

Southern California Bight 1998 Regional Marine Monitoring Survey (Bight 98) Quality Assurance Manual

Line of Evidence (LOE) for Decision ID 135711, Zinc	Region 4
Channel Islands Harbor

LOE ID:

83622

Pollutant:

Zinc

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Boardstaff assessed SWAMP data for Channel Islands Harbor to determine beneficial use support and results are as follows: 0 of 5 samples exceed the criterion for Zinc.

Data Reference:

RWB4 Miscellaneous Ventura Coastal 2006

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

In marine and estuarine sediments the effects range median (predictive of sediment toxicity for sediment-dwelling organisms) for Zinc is 410 ug/g dry weight (Long et al., 1995).

Guideline Reference:

Incidence of adverse biological effects within ranges of chemical concentrations in marine and estuary sediments. Environmental Management. 19, (1): 81-97

Spatial Representation:

Temporal Representation:

Data was collected over the time period 10/11/2006-10/12/2006.

Environmental Conditions:

Staff is not aware of any special conditions that might affect interpretation of the data.

QAPP Information:

2002 QAMP (Quality Assurance Management Plan) for the State of California's Surface Water Ambient Monitoring Program

QAPP Information Reference(s):

Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version)

Line of Evidence (LOE) for Decision ID 135711, Zinc	Region 4
Channel Islands Harbor

LOE ID:

4084

Pollutant:

Zinc (sediment)

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Not Recorded

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

Not Specified

Data Used to Assess Water Quality:

Unspecified--This LOE is a placeholder to support a 303(d) listing decision made prior to 2006.

Data Reference:

Placeholder reference pre-2006 303(d)

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Unspecified

Objective/Criterion Reference:

Placeholder reference pre-2006 303(d)

Evaluation Guideline:

Unspecified

Guideline Reference:

Placeholder reference pre-2006 303(d)

Spatial Representation:

Unspecified

Temporal Representation:

Unspecified

Environmental Conditions:

Unspecified

QAPP Information:

Unspecified

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 135711, Zinc	Region 4
Channel Islands Harbor

LOE ID:

268403

Pollutant:

Zinc

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved zinc criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 81 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-18 (Oxn_CI-18_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135711, Zinc	Region 4
Channel Islands Harbor

LOE ID:

268404

Pollutant:

Zinc

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved zinc criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 81 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-25 (Oxn_CI-25_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135711, Zinc	Region 4
Channel Islands Harbor

LOE ID:

268519

Pollutant:

Zinc

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved zinc criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 81 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-21 (Oxn_CI-21_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135711, Zinc	Region 4
Channel Islands Harbor

LOE ID:

268523

Pollutant:

Zinc

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved zinc criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 81 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-16 (Oxn_CI-16_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135711, Zinc	Region 4
Channel Islands Harbor

LOE ID:

251515

Pollutant:

Zinc

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The evaluation guideline for zinc is the effects range median value of 410 PPM (ug/g) dry weight (Long et al., 1995).

Guideline Reference:

Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278

Spatial Representation:

Data were collected from 1 station(s). Station Code(s): B18-10046 (B18-10046).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-08-18 to 2018-08-18

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 135711, Zinc	Region 4
Channel Islands Harbor

LOE ID:

251523

Pollutant:

Zinc

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The evaluation guideline for zinc is the effects range median value of 410 PPM (ug/g) dry weight (Long et al., 1995).

Guideline Reference:

Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278

Spatial Representation:

Data were collected from 1 station(s). Station Code(s): 410CHN001 (Channel Islands Harbor CI1).

Temporal Representation:

Data for this waterbody were collected over the date range 2017-05-24 to 2017-05-24

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 135711, Zinc	Region 4
Channel Islands Harbor

LOE ID:

83620

Pollutant:

Toxicity

LOE Subgroup:

Toxicity

Matrix:

Sediment

Fraction:

None

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

TOXICITY TESTING

Data Used to Assess Water Quality:

Data Reference:

RWB4 Miscellaneous Ventura Coastal 2006

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Revised approach to toxicity test acceptability criteria using a statistical performance assessment. Environmental Toxicology and Chemistry, vol. 16, No. 6, pp 1322¿1329

Spatial Representation:

The samples were collected at stations 410VHCHN1, 410VHCHN2, 410VHCHN3, 410VHCHN4, and 410VHCHN5.

Temporal Representation:

The samples were collected in October 2006.

Environmental Conditions:

QAPP Information:

Data quality is good. Data results were recorded in the SWAMP database and follwed SWAMP protocols.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 135711, Zinc	Region 4
Channel Islands Harbor

LOE ID:

251656

Pollutant:

Zinc

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The evaluation guideline for zinc is the effects range median value of 410 PPM (ug/g) dry weight (Long et al., 1995).

Guideline Reference:

Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278

Spatial Representation:

Data were collected from 1 station(s). Station Code(s): 410CHN004 (Channel Islands Harbor CI4).

Temporal Representation:

Data for this waterbody were collected over the date range 2017-05-24 to 2017-05-24

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 135711, Zinc	Region 4
Channel Islands Harbor

LOE ID:

251227

Pollutant:

Zinc

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The evaluation guideline for zinc is the effects range median value of 410 PPM (ug/g) dry weight (Long et al., 1995).

Guideline Reference:

Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278

Spatial Representation:

Data were collected from 1 station(s). Station Code(s): 410CHN005 (Channel Islands Harbor CI5).

Temporal Representation:

Data for this waterbody were collected over the date range 2017-05-24 to 2017-05-24

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 135711, Zinc	Region 4
Channel Islands Harbor

LOE ID:

251558

Pollutant:

Zinc

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed SWAMP RWB4 Monitoring data for Channel Islands Harbor to determine beneficial use support and the results are as follows: 1 of the 1 samples exceeded the evaluation guideline for Zinc .

Data Reference:

Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The evaluation guideline for zinc is the effects range median value of 410 PPM (ug/g) dry weight (Long et al., 1995).

Guideline Reference:

Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278

Spatial Representation:

Data were collected from 1 station(s). Station Code(s): 410CHN003 (Channel Islands Harbor CI3).

Temporal Representation:

Data for this waterbody were collected over the date range 2017-05-24 to 2017-05-24

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 135711, Zinc	Region 4
Channel Islands Harbor

LOE ID:

268536

Pollutant:

Zinc

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved zinc criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 81 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-11 (Oxn_CI-11_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135711, Zinc	Region 4
Channel Islands Harbor

LOE ID:

268538

Pollutant:

Zinc

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved zinc criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 81 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-14 (Oxn_CI-14_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135711, Zinc	Region 4
Channel Islands Harbor

LOE ID:

268435

Pollutant:

Zinc

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved zinc criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 81 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-13 (Oxn_CI-13_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135711, Zinc	Region 4
Channel Islands Harbor

LOE ID:

268326

Pollutant:

Zinc

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved zinc criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 81 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-12 (Oxn_CI-12_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135711, Zinc	Region 4
Channel Islands Harbor

LOE ID:

268438

Pollutant:

Zinc

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved zinc criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 81 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-22 (Oxn_CI-22_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135711, Zinc	Region 4
Channel Islands Harbor

LOE ID:

268551

Pollutant:

Zinc

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved zinc criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 81 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-06 (Oxn_CI-06_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-09 and 2018-10-09

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135711, Zinc	Region 4
Channel Islands Harbor

LOE ID:

268553

Pollutant:

Zinc

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved zinc criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 81 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-26 (Oxn_CI-26_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135711, Zinc	Region 4
Channel Islands Harbor

LOE ID:

268447

Pollutant:

Zinc

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved zinc criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 81 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-03 (Oxn_CI-03_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135711, Zinc	Region 4
Channel Islands Harbor

LOE ID:

268342

Pollutant:

Zinc

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved zinc criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 81 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-15 (Oxn_CI-15_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135711, Zinc	Region 4
Channel Islands Harbor

LOE ID:

268451

Pollutant:

Zinc

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved zinc criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 81 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-09 (Oxn_CI-09_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY


DECISION ID	135714	Region 4
Channel Islands Harbor

Pollutant:	1, 3 -dichlorobenzene
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.

Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.

Line of Evidence (LOE) for Decision ID 135714, 1, 3 -dichlorobenzene	Region 4
Channel Islands Harbor

LOE ID:

260497

Pollutant:

1, 3 -dichlorobenzene

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The 1, 3-dichlorobenzene criterion for the protection of human health from consumption of organisms only is 2,600 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-17 (Oxn_CI-17_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2019-12-04 and 2019-12-04

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY


DECISION ID	135715	Region 4
Channel Islands Harbor

Pollutant:	1, 4 -dichlorobenzene
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.

Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.

Line of Evidence (LOE) for Decision ID 135715, 1, 4 -dichlorobenzene	Region 4
Channel Islands Harbor

LOE ID:

260498

Pollutant:

1, 4 -dichlorobenzene

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The 1, 4-dichlorobenzene criterion for the protection of human health from consumption of organisms only is 2,600 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-17 (Oxn_CI-17_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2019-12-04 and 2019-12-04

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY


DECISION ID	135718	Region 4
Channel Islands Harbor

Pollutant:	1,1,2,2-Tetrachloroethane
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.

Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.

Line of Evidence (LOE) for Decision ID 135718, 1,1,2,2-Tetrachloroethane	Region 4
Channel Islands Harbor

LOE ID:

267477

Pollutant:

1,1,2,2-Tetrachloroethane

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The 1, 1, 2, 2-tetrachloroethane criterion for the protection of human health from consumption of organisms only is 11 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-17 (Oxn_CI-17_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2019-12-04 and 2019-12-04

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY


DECISION ID	135723	Region 4
Channel Islands Harbor

Pollutant:	1,1,2-Trichloroethane
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.

Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.

Line of Evidence (LOE) for Decision ID 135723, 1,1,2-Trichloroethane	Region 4
Channel Islands Harbor

LOE ID:

267732

Pollutant:

1,1,2-Trichloroethane

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The 1, 1, 2-trichloroethane criterion for the protection of human health from consumption of organisms only is 42 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-17 (Oxn_CI-17_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2019-12-04 and 2019-12-04

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY


DECISION ID	135622	Region 4
Channel Islands Harbor

Pollutant:	1,1-Dichloroethylene (DCE)/ Vinylidene Chloride
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.

Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.

Line of Evidence (LOE) for Decision ID 135622, 1,1-Dichloroethylene (DCE)/ Vinylidene Chloride	Region 4
Channel Islands Harbor

LOE ID:

260501

Pollutant:

1,1-Dichloroethylene (DCE)/ Vinylidene Chloride

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The 1, 1-dichloroethylene criterion for the protection of human health from consumption of organisms only is 3.2 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-17 (Oxn_CI-17_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2019-12-04 and 2019-12-04

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY


DECISION ID	135630	Region 4
Channel Islands Harbor

Pollutant:	1,2,4-Trichlorobenzene
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.

Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.

Line of Evidence (LOE) for Decision ID 135630, 1,2,4-Trichlorobenzene	Region 4
Channel Islands Harbor

LOE ID:

267715

Pollutant:

1,2,4-Trichlorobenzene

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Trichlorobenzene, 1,2,4-. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: Surface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The USEPA recommended criterion for 1,2,4-trichlorobenzene for the protection of human health from the consumption of organisms only is 0.076 ug/L.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-17 (Oxn_CI-17_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2019-12-04 to 2019-12-04

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY


DECISION ID	135642	Region 4
Channel Islands Harbor

Pollutant:	1,2-Dichloroethane
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.

Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.

Line of Evidence (LOE) for Decision ID 135642, 1,2-Dichloroethane	Region 4
Channel Islands Harbor

LOE ID:

260500

Pollutant:

1,2-Dichloroethane

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The 1, 2-dichloroethane criterion for the protection of human health from consumption of organisms only is 99 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-17 (Oxn_CI-17_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2019-12-04 and 2019-12-04

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY


DECISION ID	135707	Region 4
Channel Islands Harbor

Pollutant:	1,2-Dichloroethylene,-trans
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.

Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.

Line of Evidence (LOE) for Decision ID 135707, 1,2-Dichloroethylene,-trans	Region 4
Channel Islands Harbor

LOE ID:

260519

Pollutant:

1,2-Dichloroethylene,-trans

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The 1, 2-trans-dichloroethylene criterion for the protection of human health from consumption of organisms only is 140,000 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-17 (Oxn_CI-17_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2019-12-04 and 2019-12-04

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY


DECISION ID	135646	Region 4
Channel Islands Harbor

Pollutant:	1,2-Dichloropropane
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.

Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.

Line of Evidence (LOE) for Decision ID 135646, 1,2-Dichloropropane	Region 4
Channel Islands Harbor

LOE ID:

260623

Pollutant:

1,2-Dichloropropane

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The 1, 2-dichloropropane criterion for the protection of human health from consumption of organisms only is 39 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-17 (Oxn_CI-17_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2019-12-04 and 2019-12-04

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY


DECISION ID	135650	Region 4
Channel Islands Harbor

Pollutant:	1,2-Diphenylhydrazine
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.

Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.

Line of Evidence (LOE) for Decision ID 135650, 1,2-Diphenylhydrazine	Region 4
Channel Islands Harbor

LOE ID:

260804

Pollutant:

1,2-Diphenylhydrazine

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Diphenylhydrazine, 1,2-. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The 1, 2-diphenylhydrazine criterion for the protection of human health from consumption of organisms only is 0.54 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-17 (Oxn_CI-17_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2019-12-04 to 2019-12-04

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY


DECISION ID	135655	Region 4
Channel Islands Harbor

Pollutant:	1,3-Dichloropropene
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.

Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.

Line of Evidence (LOE) for Decision ID 135655, 1,3-Dichloropropene	Region 4
Channel Islands Harbor

LOE ID:

260624

Pollutant:

1,3-Dichloropropene

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The 1, 3-dichloropropylene criterion for the protection of human health from the consumption of organisms only is 1,700 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-17 (Oxn_CI-17_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2019-12-04 and 2019-12-04

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY


DECISION ID	135660	Region 4
Channel Islands Harbor

Pollutant:	2,2'-Dichlorodiethyl ether
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.

Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.

Line of Evidence (LOE) for Decision ID 135660, 2,2'-Dichlorodiethyl ether	Region 4
Channel Islands Harbor

LOE ID:

258169

Pollutant:

2,2'-Dichlorodiethyl ether

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Bis(2-chloroethyl)ether. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The bis(2-chloroethyl)ether criterion for the protection of human health from consumption of organisms only is 1.4 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-17 (Oxn_CI-17_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2019-12-04 to 2019-12-04

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY


DECISION ID	135679	Region 4
Channel Islands Harbor

Pollutant:	2,4,6-Trichlorophenol
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.

Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.

Line of Evidence (LOE) for Decision ID 135679, 2,4,6-Trichlorophenol	Region 4
Channel Islands Harbor

LOE ID:

267735

Pollutant:

2,4,6-Trichlorophenol

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The 2, 4, 6-trichlorophenol criterion for the protection of human health from consumption of organisms only is 6.5 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-17 (Oxn_CI-17_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2019-12-04 and 2019-12-04

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY


DECISION ID	135685	Region 4
Channel Islands Harbor

Pollutant:	2,4-Dichlorophenol
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.

Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.

Line of Evidence (LOE) for Decision ID 135685, 2,4-Dichlorophenol	Region 4
Channel Islands Harbor

LOE ID:

260520

Pollutant:

2,4-Dichlorophenol

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The 2, 4-dichlorophenol criterion for the protection of human health from the consumption of organisms only is 790 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-17 (Oxn_CI-17_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2019-12-04 and 2019-12-04

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY


DECISION ID	135686	Region 4
Channel Islands Harbor

Pollutant:	2,4-Dimethylphenol
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.

Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.

Line of Evidence (LOE) for Decision ID 135686, 2,4-Dimethylphenol	Region 4
Channel Islands Harbor

LOE ID:

260395

Pollutant:

2,4-Dimethylphenol

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The 2, 4-dimethylphenol criterion for the protection of human health from consumption of organisms only is 2,300 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-17 (Oxn_CI-17_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2019-12-04 and 2019-12-04

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY


DECISION ID	135688	Region 4
Channel Islands Harbor

Pollutant:	2,4-Dinitrophenol
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.

Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.

Line of Evidence (LOE) for Decision ID 135688, 2,4-Dinitrophenol	Region 4
Channel Islands Harbor

LOE ID:

260397

Pollutant:

2,4-Dinitrophenol

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The 2, 4-dinitrophenol criterion for the protection of human health from consumption of organisms only is 14,000 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-17 (Oxn_CI-17_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2019-12-04 and 2019-12-04

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY


DECISION ID	135691	Region 4
Channel Islands Harbor

Pollutant:	2,4-Dinitrotoluene
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.

Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.

Line of Evidence (LOE) for Decision ID 135691, 2,4-Dinitrotoluene	Region 4
Channel Islands Harbor

LOE ID:

260398

Pollutant:

2,4-Dinitrotoluene

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The 2, 4-dinitrotoluene criterion for the protection of human health from the consumption of organisms only is 9.1 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-17 (Oxn_CI-17_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2019-12-04 and 2019-12-04

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY


DECISION ID	135698	Region 4
Channel Islands Harbor

Pollutant:	2-Chloronaphthalene
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.

Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.

Line of Evidence (LOE) for Decision ID 135698, 2-Chloronaphthalene	Region 4
Channel Islands Harbor

LOE ID:

258325

Pollutant:

2-Chloronaphthalene

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The 2-chloronaphthalene criterion for the protection of human health from consumption of organisms only is 4,300 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-17 (Oxn_CI-17_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2019-12-04 and 2019-12-04

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY


DECISION ID	135699	Region 4
Channel Islands Harbor

Pollutant:	2-Chlorophenol
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.

Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.

Line of Evidence (LOE) for Decision ID 135699, 2-Chlorophenol	Region 4
Channel Islands Harbor

LOE ID:

258326

Pollutant:

2-Chlorophenol

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The 2-Chlorophenol criterion for the protection of human health from consumption of organisms only is 400 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-17 (Oxn_CI-17_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2019-12-04 and 2019-12-04

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY


DECISION ID	135702	Region 4
Channel Islands Harbor

Pollutant:	2-Methylnaphthalene
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)(2018)
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.

Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.

Line of Evidence (LOE) for Decision ID 135702, 2-Methylnaphthalene	Region 4
Channel Islands Harbor

LOE ID:

249534

Pollutant:

2-Methylnaphthalene

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The evaluation guideline for 2-methyl-naphthalene is the probable effect level (PEL) of 201 ug/kg dry weight (MacDonald et al., 1996).

Guideline Reference:

Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278

Spatial Representation:

Data were collected from 1 station(s). Station Code(s): 410CHN005 (Channel Islands Harbor CI5).

Temporal Representation:

Data for this waterbody were collected over the date range 2017-05-24 to 2017-05-24

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 135702, 2-Methylnaphthalene	Region 4
Channel Islands Harbor

LOE ID:

83577

Pollutant:

2-Methylnaphthalene

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Boardstaff assessed SWAMP data for Channel Islands Harbor to determine beneficial use support and results are as follows: 0 of 5 samples exceed the criterion for 2-Methylnaphthalene.

Data Reference:

RWB4 Miscellaneous Ventura Coastal 2006

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

In marine and estuarine sediments the probable effect level (predictive of sediment toxicity for sediment-dwelling organisms) for 2-Methylnaphthalene is 201.28 ng/g dry weight (MacDonald et al., 1996).

Guideline Reference:

Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278

Spatial Representation:

Temporal Representation:

Data was collected over the time period 10/11/2006-10/12/2006.

Environmental Conditions:

Staff is not aware of any special conditions that might affect interpretation of the data.

QAPP Information:

2002 QAMP (Quality Assurance Management Plan) for the State of California's Surface Water Ambient Monitoring Program

QAPP Information Reference(s):

Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version)

Line of Evidence (LOE) for Decision ID 135702, 2-Methylnaphthalene	Region 4
Channel Islands Harbor

LOE ID:

249859

Pollutant:

2-Methylnaphthalene

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The evaluation guideline for 2-methyl-naphthalene is the probable effect level (PEL) of 201 ug/kg dry weight (MacDonald et al., 1996).

Guideline Reference:

Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278

Spatial Representation:

Data were collected from 1 station(s). Station Code(s): 410CHN004 (Channel Islands Harbor CI4).

Temporal Representation:

Data for this waterbody were collected over the date range 2017-05-24 to 2017-05-24

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 135702, 2-Methylnaphthalene	Region 4
Channel Islands Harbor

LOE ID:

249511

Pollutant:

2-Methylnaphthalene

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The evaluation guideline for 2-methyl-naphthalene is the probable effect level (PEL) of 201 ug/kg dry weight (MacDonald et al., 1996).

Guideline Reference:

Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278

Spatial Representation:

Data were collected from 1 station(s). Station Code(s): 410CHN001 (Channel Islands Harbor CI1).

Temporal Representation:

Data for this waterbody were collected over the date range 2017-05-24 to 2017-05-24

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 135702, 2-Methylnaphthalene	Region 4
Channel Islands Harbor

LOE ID:

249493

Pollutant:

2-Methylnaphthalene

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The evaluation guideline for 2-methyl-naphthalene is the probable effect level (PEL) of 201 ug/kg dry weight (MacDonald et al., 1996).

Guideline Reference:

Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278

Spatial Representation:

Data were collected from 1 station(s). Station Code(s): 410CHN002 (Channel Islands Harbor CI2).

Temporal Representation:

Data for this waterbody were collected over the date range 2017-05-24 to 2017-05-24

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 135702, 2-Methylnaphthalene	Region 4
Channel Islands Harbor

LOE ID:

249695

Pollutant:

2-Methylnaphthalene

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The evaluation guideline for 2-methyl-naphthalene is the probable effect level (PEL) of 201 ug/kg dry weight (MacDonald et al., 1996).

Guideline Reference:

Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278

Spatial Representation:

Data were collected from 1 station(s). Station Code(s): 410CHN003 (Channel Islands Harbor CI3).

Temporal Representation:

Data for this waterbody were collected over the date range 2017-05-24 to 2017-05-24

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.


DECISION ID	135709	Region 4
Channel Islands Harbor

Pollutant:	3,3'-Dichlorobenzidine
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.

Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.

Line of Evidence (LOE) for Decision ID 135709, 3,3'-Dichlorobenzidine	Region 4
Channel Islands Harbor

LOE ID:

260499

Pollutant:

3,3'-Dichlorobenzidine

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Dichlorobenzidine, 3,3'-. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The 3, 3-dichlorobenzidine criterion for the protection of human health from consumption of organisms only is 0.077 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-17 (Oxn_CI-17_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2019-12-04 to 2019-12-04

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY


DECISION ID	135713	Region 4
Channel Islands Harbor

Pollutant:	Acenaphthene
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)(2018)
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence are necessary to assess listing status. 1 line of evidence is available in the administrative record to assess this pollutant. 0 of 1 sample exceeded the CRITERIA. Based on the readily available data and information, the weight of evidence indicates that there is insufficient justification for placing this water segment-pollutant combination on the CWA section 303(d) List. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. 0 of 1 sample exceeded the CRITERIA and this sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is fully supported using table 3.1. 4. Pursuant to SECTION 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.

Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.

Line of Evidence (LOE) for Decision ID 135713, Acenaphthene	Region 4
Channel Islands Harbor

LOE ID:

83578

Pollutant:

Acenaphthene

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

State Water Board staff assessed 4 data for Channel Islands Harbor to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Acenaphthene.

Data Reference:

RWB4 Miscellaneous Ventura Coastal 2006

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

The Acenaphthene criteria for the protection of human health from consumption of organisms only is 2,700 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Data for this line of evidence for Channel Islands Harbor was collected at 1 monitoring site [ Channel Islands Harbor 5 - 410VHCHN5]

Temporal Representation:

Data was collected on a single day 10/12/2006.

Environmental Conditions:

Staff is not aware of any special conditions that might affect interpretation of the data.

QAPP Information:

The SWAMP QAPP (2008) was followed.

QAPP Information Reference(s):

Surface Water Ambient Monitoring Program Quality Assurance Program Plan

Line of Evidence (LOE) for Decision ID 135713, Acenaphthene	Region 4
Channel Islands Harbor

LOE ID:

256313

Pollutant:

Acenaphthene

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The acenaphthene criterion for the protection of human health from consumption of organisms only is 2,700 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-17 (Oxn_CI-17_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2019-12-04 and 2019-12-04

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY


DECISION ID	135719	Region 4
Channel Islands Harbor

Pollutant:	Acrylonitrile
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.

Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.

Line of Evidence (LOE) for Decision ID 135719, Acrylonitrile	Region 4
Channel Islands Harbor

LOE ID:

256334

Pollutant:

Acrylonitrile

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Acrylonitrile. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The acrylonitrile criterion for the protection of human health from consumption of organisms only is 0.66 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-17 (Oxn_CI-17_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2019-12-04 to 2019-12-04

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY


DECISION ID	135720	Region 4
Channel Islands Harbor

Pollutant:	Aldrin
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)(2018)
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status. 3 lines of evidence are available in the administrative record to assess this pollutant. 0 of 0 samples exceed the CRITERIA. 0 of 1 samples exceed the CRITERIA. 0 of 30 samples exceed the CRITERIA. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the CWA section 303(d) List in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. 0 of 0, 0 of 1 and 0 of 30 samples exceed the CRITERIA and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.

Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because applicable water quality standards are not being exceeded.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.

Line of Evidence (LOE) for Decision ID 135720, Aldrin	Region 4
Channel Islands Harbor

LOE ID:

256358

Pollutant:

Aldrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The aldrin criterion maximum concentration (expressed as a 1-day average) to protect aquatic life in saltwater is 0.65 ug/L. The criterion of 1.3 ug/L provided in the California Toxics Rule is an instantaneous maximum concentration and was divided by 2 in order to better represent a criterion maximum concentration (CMC) value as specified in footnote (g) of Table (b)(1) of the California Toxics Rule (2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-14 (Oxn_CI-14_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135720, Aldrin	Region 4
Channel Islands Harbor

LOE ID:

256393

Pollutant:

Aldrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-19 (Oxn_CI-19_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-10 and 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135720, Aldrin	Region 4
Channel Islands Harbor

LOE ID:

256385

Pollutant:

Aldrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support and results are as follows: 0 of 4 samples exceeded the water quality threshold for Aldrin.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-17 (Oxn_CI-17_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2019-12-04

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135720, Aldrin	Region 4
Channel Islands Harbor

LOE ID:

256368

Pollutant:

Aldrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-25 (Oxn_CI-25_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135720, Aldrin	Region 4
Channel Islands Harbor

LOE ID:

256452

Pollutant:

Aldrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-31 (Oxn_CI-31_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-10 and 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135720, Aldrin	Region 4
Channel Islands Harbor

LOE ID:

256450

Pollutant:

Aldrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-10 (Oxn_CI-10_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-10 and 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135720, Aldrin	Region 4
Channel Islands Harbor

LOE ID:

256449

Pollutant:

Aldrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-27 (Oxn_CI-27_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135720, Aldrin	Region 4
Channel Islands Harbor

LOE ID:

256356

Pollutant:

Aldrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-18 (Oxn_CI-18_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135720, Aldrin	Region 4
Channel Islands Harbor

LOE ID:

256355

Pollutant:

Aldrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-07 (Oxn_CI-07_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135720, Aldrin	Region 4
Channel Islands Harbor

LOE ID:

256354

Pollutant:

Aldrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for Aldrin.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-02 (Oxn_CI-02_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-11-29

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135720, Aldrin	Region 4
Channel Islands Harbor

LOE ID:

256349

Pollutant:

Aldrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-09 (Oxn_CI-09_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-10 and 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135720, Aldrin	Region 4
Channel Islands Harbor

LOE ID:

256347

Pollutant:

Aldrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-20 (Oxn_CI-20_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135720, Aldrin	Region 4
Channel Islands Harbor

LOE ID:

256342

Pollutant:

Aldrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-08 (Oxn_CI-08_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-10 and 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135720, Aldrin	Region 4
Channel Islands Harbor

LOE ID:

256341

Pollutant:

Aldrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-15 (Oxn_CI-15_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135720, Aldrin	Region 4
Channel Islands Harbor

LOE ID:

256432

Pollutant:

Aldrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-12 (Oxn_CI-12_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-10 and 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135720, Aldrin	Region 4
Channel Islands Harbor

LOE ID:

256430

Pollutant:

Aldrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-24 (Oxn_CI-24_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135720, Aldrin	Region 4
Channel Islands Harbor

LOE ID:

256427

Pollutant:

Aldrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-23 (Oxn_CI-23_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135720, Aldrin	Region 4
Channel Islands Harbor

LOE ID:

256415

Pollutant:

Aldrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-06 (Oxn_CI-06_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-10 and 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135720, Aldrin	Region 4
Channel Islands Harbor

LOE ID:

256409

Pollutant:

Aldrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-13 (Oxn_CI-13_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135720, Aldrin	Region 4
Channel Islands Harbor

LOE ID:

256311

Pollutant:

Aldrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-11 (Oxn_CI-11_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-10 and 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135720, Aldrin	Region 4
Channel Islands Harbor

LOE ID:

256404

Pollutant:

Aldrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-21 (Oxn_CI-21_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-10 and 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135720, Aldrin	Region 4
Channel Islands Harbor

LOE ID:

256403

Pollutant:

Aldrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-22 (Oxn_CI-22_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-10 and 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135720, Aldrin	Region 4
Channel Islands Harbor

LOE ID:

256400

Pollutant:

Aldrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-26 (Oxn_CI-26_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-10 and 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135720, Aldrin	Region 4
Channel Islands Harbor

LOE ID:

256399

Pollutant:

Aldrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-16 (Oxn_CI-16_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135720, Aldrin	Region 4
Channel Islands Harbor

LOE ID:

256395

Pollutant:

Aldrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-03 (Oxn_CI-03_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-10 and 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135720, Aldrin	Region 4
Channel Islands Harbor

LOE ID:

83713

Pollutant:

Aldrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

State Water Board staff assessed 4 data for Channel Islands Harbor to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Aldrin.

Data Reference:

RWB4 Miscellaneous Ventura Coastal 2006

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

The Aldrin criteria for the protection of saltwater aquatic life is 1.3 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Data for this line of evidence for Channel Islands Harbor was collected at 1 monitoring site [ Channel Islands Harbor 5 - 410VHCHN5]

Temporal Representation:

Data was collected on a single day 10/12/2006.

Environmental Conditions:

Staff is not aware of any special conditions that might affect interpretation of the data.

QAPP Information:

The SWAMP QAPP (2008) was followed.

QAPP Information Reference(s):

Surface Water Ambient Monitoring Program Quality Assurance Program Plan

Line of Evidence (LOE) for Decision ID 135720, Aldrin	Region 4
Channel Islands Harbor

LOE ID:

83712

Pollutant:

Aldrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

State Water Board staff assessed 4 data for Channel Islands Harbor to determine beneficial use support and results are as follows: 0 of 0 samples exceed the criterion for Aldrin. One sample result(s) were not used in the assessment because the laboratory data reporting limit(s) was above the objective and therefore the results could not be quantified with the level of certainty required by the Listing Policy.

Data Reference:

RWB4 Miscellaneous Ventura Coastal 2006

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

No individual pesticide or combination of pesticides shall be present in concentrations that affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The Aldrin criteria for the protection of human health from the consumption of organisms is 0.000050 ug/L (National Recommended Water Quality Criteria 2009).

Guideline Reference:

Spatial Representation:

Data for this line of evidence for Channel Islands Harbor was collected at 1 monitoring site [ Channel Islands Harbor 5 - 410VHCHN5]

Temporal Representation:

Data was collected on a single day 10/12/2006.

Environmental Conditions:

Staff is not aware of any special conditions that might affect interpretation of the data.

QAPP Information:

The SWAMP QAPP (2008) was followed.

QAPP Information Reference(s):

Surface Water Ambient Monitoring Program Quality Assurance Program Plan


DECISION ID	150431	Region 4
Channel Islands Harbor

Pollutant:	Ammonia
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the CWA section 303(d) List in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. 0 of 49 samples exceeded the objective and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.

Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because applicable water quality standards are not being exceeded.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.

Line of Evidence (LOE) for Decision ID 150431, Ammonia	Region 4
Channel Islands Harbor

LOE ID:

257162

Pollutant:

Nitrogen, ammonia (Total Ammonia)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support and results are as follows: 0 of 2 samples exceeded the water quality threshold for Ammonia as N.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: For inland surface waters not characteristic of freshwater, the four-day average concentration of unionized ammonia shall not exceed 0.035 mg/L and the one-hour average concentration shall not exceed 0.233 mg/L.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-15 (Oxn_CI-15_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-11-22 and 2018-11-29

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 150431, Ammonia	Region 4
Channel Islands Harbor

LOE ID:

257042

Pollutant:

Nitrogen, ammonia (Total Ammonia)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-11 (Oxn_CI-11_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-11-22 and 2018-11-29

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 150431, Ammonia	Region 4
Channel Islands Harbor

LOE ID:

257124

Pollutant:

Nitrogen, ammonia (Total Ammonia)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-08 (Oxn_CI-08_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-11-22 and 2018-11-22

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 150431, Ammonia	Region 4
Channel Islands Harbor

LOE ID:

257119

Pollutant:

Nitrogen, ammonia (Total Ammonia)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-10 (Oxn_CI-10_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-11-22 and 2018-11-29

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 150431, Ammonia	Region 4
Channel Islands Harbor

LOE ID:

257137

Pollutant:

Nitrogen, ammonia (Total Ammonia)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-27 (Oxn_CI-27_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-11-22 and 2018-11-29

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 150431, Ammonia	Region 4
Channel Islands Harbor

LOE ID:

256789

Pollutant:

Nitrogen, ammonia (Total Ammonia)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-17 (Oxn_CI-17_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-11-22 and 2018-11-29

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 150431, Ammonia	Region 4
Channel Islands Harbor

LOE ID:

257241

Pollutant:

Nitrogen, ammonia (Total Ammonia)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-24 (Oxn_CI-24_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-11-22 and 2018-11-29

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 150431, Ammonia	Region 4
Channel Islands Harbor

LOE ID:

257086

Pollutant:

Nitrogen, ammonia (Total Ammonia)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-26 (Oxn_CI-26_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-11-22 and 2018-11-29

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 150431, Ammonia	Region 4
Channel Islands Harbor

LOE ID:

257106

Pollutant:

Nitrogen, ammonia (Total Ammonia)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-19 (Oxn_CI-19_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-11-22 and 2018-11-29

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 150431, Ammonia	Region 4
Channel Islands Harbor

LOE ID:

257108

Pollutant:

Nitrogen, ammonia (Total Ammonia)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-25 (Oxn_CI-25_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-11-22 and 2018-11-29

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 150431, Ammonia	Region 4
Channel Islands Harbor

LOE ID:

256710

Pollutant:

Nitrogen, ammonia (Total Ammonia)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-03 (Oxn_CI-03_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-11-22 and 2018-11-29

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 150431, Ammonia	Region 4
Channel Islands Harbor

LOE ID:

256750

Pollutant:

Nitrogen, ammonia (Total Ammonia)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-02 (Oxn_CI-02_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-11-22 and 2018-11-29

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 150431, Ammonia	Region 4
Channel Islands Harbor

LOE ID:

256923

Pollutant:

Nitrogen, ammonia (Total Ammonia)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-22 (Oxn_CI-22_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-11-22 and 2018-11-29

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 150431, Ammonia	Region 4
Channel Islands Harbor

LOE ID:

257256

Pollutant:

Nitrogen, ammonia (Total Ammonia)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-12 (Oxn_CI-12_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-11-22 and 2018-11-29

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 150431, Ammonia	Region 4
Channel Islands Harbor

LOE ID:

257085

Pollutant:

Nitrogen, ammonia (Total Ammonia)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-31 (Oxn_CI-31_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-11-22 and 2018-11-29

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 150431, Ammonia	Region 4
Channel Islands Harbor

LOE ID:

257107

Pollutant:

Nitrogen, ammonia (Total Ammonia)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-20 (Oxn_CI-20_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-11-22 and 2018-11-29

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 150431, Ammonia	Region 4
Channel Islands Harbor

LOE ID:

257120

Pollutant:

Nitrogen, ammonia (Total Ammonia)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-14 (Oxn_CI-14_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-11-22 and 2018-11-29

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 150431, Ammonia	Region 4
Channel Islands Harbor

LOE ID:

257139

Pollutant:

Nitrogen, ammonia (Total Ammonia)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-07 (Oxn_CI-07_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-11-22 and 2018-11-29

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 150431, Ammonia	Region 4
Channel Islands Harbor

LOE ID:

256966

Pollutant:

Nitrogen, ammonia (Total Ammonia)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-16 (Oxn_CI-16_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-11-22 and 2018-11-29

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 150431, Ammonia	Region 4
Channel Islands Harbor

LOE ID:

257091

Pollutant:

Nitrogen, ammonia (Total Ammonia)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-23 (Oxn_CI-23_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-11-22 and 2018-11-29

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 150431, Ammonia	Region 4
Channel Islands Harbor

LOE ID:

257005

Pollutant:

Nitrogen, ammonia (Total Ammonia)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-18 (Oxn_CI-18_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-11-22 and 2018-11-29

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 150431, Ammonia	Region 4
Channel Islands Harbor

LOE ID:

257020

Pollutant:

Nitrogen, ammonia (Total Ammonia)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-21 (Oxn_CI-21_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-11-22 and 2018-11-29

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 150431, Ammonia	Region 4
Channel Islands Harbor

LOE ID:

256767

Pollutant:

Nitrogen, ammonia (Total Ammonia)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-06 (Oxn_CI-06_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-11-22 and 2018-11-29

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 150431, Ammonia	Region 4
Channel Islands Harbor

LOE ID:

257018

Pollutant:

Nitrogen, ammonia (Total Ammonia)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-13 (Oxn_CI-13_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-11-22 and 2018-11-29

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 150431, Ammonia	Region 4
Channel Islands Harbor

LOE ID:

256984

Pollutant:

Nitrogen, ammonia (Total Ammonia)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-09 (Oxn_CI-09_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-11-22 and 2018-11-29

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY


DECISION ID	135618	Region 4
Channel Islands Harbor

Pollutant:	Anthracene
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)(2018)
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence are necessary to assess listing status. 1 line of evidence is available in the administrative record to assess this pollutant. 0 of 1 sample exceeded the CRITERIA. Based on the readily available data and information, the weight of evidence indicates that there is insufficient justification for placing this water segment-pollutant combination on the CWA section 303(d) List. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. 0 of 1 sample exceeded the CRITERIA and this sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is fully supported using table 3.1. 4. Pursuant to SECTION 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.

Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.

Line of Evidence (LOE) for Decision ID 135618, Anthracene	Region 4
Channel Islands Harbor

LOE ID:

83616

Pollutant:

Anthracene

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

State Water Board staff assessed 4 data for Channel Islands Harbor to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Anthracene.

Data Reference:

RWB4 Miscellaneous Ventura Coastal 2006

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

The Anthracene criteria for the protection of human health from consumption of organisms only is 110,000 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Data for this line of evidence for Channel Islands Harbor was collected at 1 monitoring site [ Channel Islands Harbor 5 - 410VHCHN5]

Temporal Representation:

Data was collected on a single day 10/12/2006.

Environmental Conditions:

Staff is not aware of any special conditions that might affect interpretation of the data.

QAPP Information:

The SWAMP QAPP (2008) was followed.

QAPP Information Reference(s):

Surface Water Ambient Monitoring Program Quality Assurance Program Plan

Line of Evidence (LOE) for Decision ID 135618, Anthracene	Region 4
Channel Islands Harbor

LOE ID:

257189

Pollutant:

Anthracene

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The anthracene criterion for the protection of human health from consumption of organisms only is 110,000 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-17 (Oxn_CI-17_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2019-12-04 and 2019-12-04

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY


DECISION ID	135619	Region 4
Channel Islands Harbor

Pollutant:	Antimony
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status. 3 lines of evidence are available in the administrative record to assess this pollutant. 0 out of 1 samples exceed the criterion and guideline. 0 out of 25 samples exceed the criterion and guideline. 0 out of 5 samples exceed the criterion and guideline. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the CWA section 303(d) List in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. 0 of 1, 0 of 25, and 0 of 5 samples exceeded the guideline and criteria and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.

Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because applicable water quality standards are not being exceeded.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.

Line of Evidence (LOE) for Decision ID 135619, Antimony	Region 4
Channel Islands Harbor

LOE ID:

257066

Pollutant:

Antimony

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The antimony criterion for the protection of human health from consumption of organisms only is 4,300 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-24 (Oxn_CI-24_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135619, Antimony	Region 4
Channel Islands Harbor

LOE ID:

257065

Pollutant:

Antimony

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The antimony criterion for the protection of human health from consumption of organisms only is 4,300 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-08 (Oxn_CI-08_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135619, Antimony	Region 4
Channel Islands Harbor

LOE ID:

257064

Pollutant:

Antimony

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The antimony criterion for the protection of human health from consumption of organisms only is 4,300 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-19 (Oxn_CI-19_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135619, Antimony	Region 4
Channel Islands Harbor

LOE ID:

83620

Pollutant:

Toxicity

LOE Subgroup:

Toxicity

Matrix:

Sediment

Fraction:

None

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

TOXICITY TESTING

Data Used to Assess Water Quality:

Data Reference:

RWB4 Miscellaneous Ventura Coastal 2006

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Revised approach to toxicity test acceptability criteria using a statistical performance assessment. Environmental Toxicology and Chemistry, vol. 16, No. 6, pp 1322¿1329

Spatial Representation:

The samples were collected at stations 410VHCHN1, 410VHCHN2, 410VHCHN3, 410VHCHN4, and 410VHCHN5.

Temporal Representation:

The samples were collected in October 2006.

Environmental Conditions:

QAPP Information:

Data quality is good. Data results were recorded in the SWAMP database and follwed SWAMP protocols.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 135619, Antimony	Region 4
Channel Islands Harbor

LOE ID:

257472

Pollutant:

Antimony

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The antimony criterion for the protection of human health from consumption of organisms only is 4,300 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-31 (Oxn_CI-31_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135619, Antimony	Region 4
Channel Islands Harbor

LOE ID:

257510

Pollutant:

Antimony

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The antimony criterion for the protection of human health from consumption of organisms only is 4,300 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-21 (Oxn_CI-21_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135619, Antimony	Region 4
Channel Islands Harbor

LOE ID:

257030

Pollutant:

Antimony

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The antimony criterion for the protection of human health from consumption of organisms only is 4,300 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-15 (Oxn_CI-15_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135619, Antimony	Region 4
Channel Islands Harbor

LOE ID:

245524

Pollutant:

Antimony

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The evaluation guideline for antimony is the effects range median (ERM) value of 25 ug/g dry weight (Long and Morgan 1990).

Guideline Reference:

The potential for biological effects of sediment-sorbed contaminants tested in the National Status of Trends Program. NOAA Technical Memorandum NOS OMA 52. Seattle, WA: National Oceanic and Atmospheric Administration

Spatial Representation:

Data were collected from 1 station(s). Station Code(s): B18-10046 (B18-10046).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-08-18 to 2018-08-18

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 135619, Antimony	Region 4
Channel Islands Harbor

LOE ID:

257025

Pollutant:

Antimony

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The antimony criterion for the protection of human health from consumption of organisms only is 4,300 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-20 (Oxn_CI-20_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135619, Antimony	Region 4
Channel Islands Harbor

LOE ID:

257492

Pollutant:

Antimony

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The antimony criterion for the protection of human health from consumption of organisms only is 4,300 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-27 (Oxn_CI-27_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135619, Antimony	Region 4
Channel Islands Harbor

LOE ID:

257491

Pollutant:

Antimony

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The antimony criterion for the protection of human health from consumption of organisms only is 4,300 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-06 (Oxn_CI-06_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-09 and 2018-10-09

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135619, Antimony	Region 4
Channel Islands Harbor

LOE ID:

257490

Pollutant:

Antimony

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The antimony criterion for the protection of human health from consumption of organisms only is 4,300 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-18 (Oxn_CI-18_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135619, Antimony	Region 4
Channel Islands Harbor

LOE ID:

257489

Pollutant:

Antimony

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The antimony criterion for the protection of human health from consumption of organisms only is 4,300 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-14 (Oxn_CI-14_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135619, Antimony	Region 4
Channel Islands Harbor

LOE ID:

257288

Pollutant:

Antimony

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The antimony criterion for the protection of human health from consumption of organisms only is 4,300 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-02 (Oxn_CI-02_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135619, Antimony	Region 4
Channel Islands Harbor

LOE ID:

257287

Pollutant:

Antimony

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The antimony criterion for the protection of human health from consumption of organisms only is 4,300 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-09 (Oxn_CI-09_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135619, Antimony	Region 4
Channel Islands Harbor

LOE ID:

257284

Pollutant:

Antimony

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The antimony criterion for the protection of human health from consumption of organisms only is 4,300 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-16 (Oxn_CI-16_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135619, Antimony	Region 4
Channel Islands Harbor

LOE ID:

257427

Pollutant:

Antimony

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The antimony criterion for the protection of human health from consumption of organisms only is 4,300 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-25 (Oxn_CI-25_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135619, Antimony	Region 4
Channel Islands Harbor

LOE ID:

257471

Pollutant:

Antimony

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The antimony criterion for the protection of human health from consumption of organisms only is 4,300 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-07 (Oxn_CI-07_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135619, Antimony	Region 4
Channel Islands Harbor

LOE ID:

257470

Pollutant:

Antimony

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The antimony criterion for the protection of human health from consumption of organisms only is 4,300 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-17 (Oxn_CI-17_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135619, Antimony	Region 4
Channel Islands Harbor

LOE ID:

257467

Pollutant:

Antimony

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The antimony criterion for the protection of human health from consumption of organisms only is 4,300 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-10 (Oxn_CI-10_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135619, Antimony	Region 4
Channel Islands Harbor

LOE ID:

257466

Pollutant:

Antimony

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The antimony criterion for the protection of human health from consumption of organisms only is 4,300 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-03 (Oxn_CI-03_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135619, Antimony	Region 4
Channel Islands Harbor

LOE ID:

257450

Pollutant:

Antimony

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The antimony criterion for the protection of human health from consumption of organisms only is 4,300 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-11 (Oxn_CI-11_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135619, Antimony	Region 4
Channel Islands Harbor

LOE ID:

257249

Pollutant:

Antimony

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The antimony criterion for the protection of human health from consumption of organisms only is 4,300 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-13 (Oxn_CI-13_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135619, Antimony	Region 4
Channel Islands Harbor

LOE ID:

257248

Pollutant:

Antimony

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The antimony criterion for the protection of human health from consumption of organisms only is 4,300 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-26 (Oxn_CI-26_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135619, Antimony	Region 4
Channel Islands Harbor

LOE ID:

257247

Pollutant:

Antimony

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The antimony criterion for the protection of human health from consumption of organisms only is 4,300 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-12 (Oxn_CI-12_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135619, Antimony	Region 4
Channel Islands Harbor

LOE ID:

257245

Pollutant:

Antimony

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The antimony criterion for the protection of human health from consumption of organisms only is 4,300 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-22 (Oxn_CI-22_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135619, Antimony	Region 4
Channel Islands Harbor

LOE ID:

257068

Pollutant:

Antimony

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The antimony criterion for the protection of human health from consumption of organisms only is 4,300 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-23 (Oxn_CI-23_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY


DECISION ID	135621	Region 4
Channel Islands Harbor

Pollutant:	Arsenic
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)(2018)
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence are necessary to assess listing status. 4 lines of evidence are available in the administrative record to assess this pollutant. 1 of 1 sample exceeded the CRITERIA for arsenic in fish tissue. 1 of 1 sample exceeded the CRITERIA for arsenic in shellfish tissue. 0 of 25 sample exceeded the CRITERIA for arsenic in water. 0 of 5 samples exceeded the CRITERIA for arsenic in water. 0 of 11 samples exceeded the GUIDELINE for arsenic in sediment. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the CWA section 303(d) List. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. 1 of 1, 1 of 1, 0 of 25, and 0 of 5 samples exceeded the CRITERIA and 0 of 11 samples exceeded the GUIDELINE and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.

Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because applicable water quality standards are not being exceeded.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.

Line of Evidence (LOE) for Decision ID 135621, Arsenic	Region 4
Channel Islands Harbor

LOE ID:

245665

Pollutant:

Arsenic

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The evaluation guideline for arsenic is the effects range median (ERM) value of 70 ug/g dry weight (Long et al., 1995).

Guideline Reference:

Incidence of adverse biological effects within ranges of chemical concentrations in marine and estuary sediments. Environmental Management. 19, (1): 81-97

Spatial Representation:

Data were collected from 1 station(s). Station Code(s): 410CHN004 (Channel Islands Harbor CI4).

Temporal Representation:

Data for this waterbody were collected over the date range 2017-05-24 to 2017-05-24

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 135621, Arsenic	Region 4
Channel Islands Harbor

LOE ID:

257402

Pollutant:

Arsenic

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved arsenic criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 36 ug/L. The conversion factor used to convert the total fraction criterion for arsenic to dissolved fraction criterion is 1. Therefore all data was considered to be representative of the dissolved fraction. (California Toxics Rule, 2000)

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-14 (Oxn_CI-14_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135621, Arsenic	Region 4
Channel Islands Harbor

LOE ID:

245223

Pollutant:

Arsenic

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The evaluation guideline for arsenic is the effects range median (ERM) value of 70 ug/g dry weight (Long et al., 1995).

Guideline Reference:

Incidence of adverse biological effects within ranges of chemical concentrations in marine and estuary sediments. Environmental Management. 19, (1): 81-97

Spatial Representation:

Data were collected from 1 station(s). Station Code(s): 410CHN002 (Channel Islands Harbor CI2).

Temporal Representation:

Data for this waterbody were collected over the date range 2017-05-24 to 2017-05-24

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 135621, Arsenic	Region 4
Channel Islands Harbor

LOE ID:

83617

Pollutant:

Arsenic

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Boardstaff assessed SWAMP data for Channel Islands Harbor to determine beneficial use support and results are as follows: 0 of 5 samples exceed the criterion for Arsenic.

Data Reference:

RWB4 Miscellaneous Ventura Coastal 2006

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

In marine and estuarine sediments the effects range median (predictive of sediment toxicity for sediment-dwelling organisms) for Arsenic is 70 ug/g dry weight (Long et al., 1995).

Guideline Reference:

Incidence of adverse biological effects within ranges of chemical concentrations in marine and estuary sediments. Environmental Management. 19, (1): 81-97

Spatial Representation:

Temporal Representation:

Data was collected over the time period 10/11/2006-10/12/2006.

Environmental Conditions:

Staff is not aware of any special conditions that might affect interpretation of the data.

QAPP Information:

2002 QAMP (Quality Assurance Management Plan) for the State of California's Surface Water Ambient Monitoring Program

QAPP Information Reference(s):

Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version)

Line of Evidence (LOE) for Decision ID 135621, Arsenic	Region 4
Channel Islands Harbor

LOE ID:

83618

Pollutant:

Arsenic

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

State Water Board staff assessed 4 data for Channel Islands Harbor to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Arsenic.

Data Reference:

RWB4 Miscellaneous Ventura Coastal 2006

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

The dissolved arsenic criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.036 mg/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Data for this line of evidence for Channel Islands Harbor was collected at 1 monitoring site [ Channel Islands Harbor 5 - 410VHCHN5]

Temporal Representation:

Data was collected on a single day 10/12/2006.

Environmental Conditions:

Staff is not aware of any special conditions that might affect interpretation of the data.

QAPP Information:

The SWAMP QAPP (2008) was followed.

QAPP Information Reference(s):

Surface Water Ambient Monitoring Program Quality Assurance Program Plan

Line of Evidence (LOE) for Decision ID 135621, Arsenic	Region 4
Channel Islands Harbor

LOE ID:

83619

Pollutant:

Arsenic

LOE Subgroup:

Pollutant-Tissue

Matrix:

Tissue

Fraction:

Fish fillet

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

Fish tissue analysis

Data Used to Assess Water Quality:

The sample exceed the guideline. Data were reported on a dry weight basis and were converted to a wet weight basis by multiplying the dry-weight concentration by a factor of 1 minus the percentage of moisture content expressed as a decimal. Ten percent of the total arsenic result was used to estimate of the amount of inorganic arsenic in the sample; this number was screened against the guideline.

Data Reference:

RWB4 Miscellaneous Ventura Coastal 2006

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Toxic pollutants shall not be present at levels that will bioaccumulate in aquatic life to levels which are harmful to aquatic life or human health. No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. There shall be no bioaccumulation of pesticide concentrations found in bottom sediments or aquatic life.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The modified OEHHA Fish Contaminant Goal for arsenic in fish tissue is 0.0034 ppm. This screening level assumes an average body weight of 70 kg and a consumption rate of 32 g/day for a 30 year exposure over a 70-year lifetime. This constituent is a carcinogen therefore the risk level is set to one in a million. (Klasing, S., and R. Brodberg, 2008; OEHHA, 2004)

Guideline Reference:

Development of Fish Contaminant Goals and Advisory Tissue Levels for Common Contaminants in California Sport Fish: Chlordane, DDTs, Dieldrin, Methylmercury, PCBs, Selenium, and Toxaphene

Guideline Reference:

Air Toxics Hotspots Program Risk Assessment Guidelines. Part ll Technical Support Document for Describing Available Cancer Potency Values.

Spatial Representation:

Samples are collected by hand from three sub-locations (A,B,C) from site 410VHCHN5. The three samples per site were averaged prior to assessment.

Temporal Representation:

Representative samples of locally abundant species were collected on February 28, 2007.

Environmental Conditions:

QAPP Information:

Samples were collected as part of the State Water Board's Surface Water Ambient Monitoring Program.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 135621, Arsenic	Region 4
Channel Islands Harbor

LOE ID:

82813

Pollutant:

Arsenic

LOE Subgroup:

Pollutant-Tissue

Matrix:

Tissue

Fraction:

Shellfish

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

Shellfish surveys

Data Used to Assess Water Quality:

The sample did exceed the guideline. Data were reported on a dry weight basis and were converted to a wet weight basis by multiplying the dry-weight concentration by a factor of 1 minus the percentage of moisture content expressed as a decimal. Ten percent of the total arsenic result was used to estimate of the amount of inorganic arsenic in the sample; this number was screened against the guideline. The three replicates were averaged prior to assessment.

Data Reference:

RWB4 Miscellaneous Ventura Coastal 2006

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Water Quality Control Plan for the Los Angeles Region: Toxic pollutants shall not be present at levels that will bioaccumulate in aquatic life to levels which are harmful to aquatic life or human health.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The modified OEHHA Fish Contaminant Goal for arsenic in shellfish tissue is 0.0052 ppm. This screening level assumes an average body weight of 70 kg and a consumption rate of 21 g/day for a 30 year exposure over a 70-year lifetime. This constituent is a carcinogen therefore the risk level is set to one in a million. (Brodberg, R.K., and G.A. Pollock, 1999; Klasing, S., and R. Brodberg, 2008; OEHHA, 2004)

Guideline Reference:

Prevalence of Selected Target Chemical Contaminants in Sport Fish From Two California Lakes: Public health designed screening study. Sacramento, CA: Office of Environmental Health Hazard Assessment

Guideline Reference:

Development of Fish Contaminant Goals and Advisory Tissue Levels for Common Contaminants in California Sport Fish: Chlordane, DDTs, Dieldrin, Methylmercury, PCBs, Selenium, and Toxaphene

Guideline Reference:

Air Toxics Hotspots Program Risk Assessment Guidelines. Part ll Technical Support Document for Describing Available Cancer Potency Values.

Spatial Representation:

Data was collected at one station: Channel Islands Harbor 5 - 410VHCHN5.

Temporal Representation:

Data was collected on a single day 2/28/2007.

Environmental Conditions:

QAPP Information:

Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002

QAPP Information Reference(s):

Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version)

Line of Evidence (LOE) for Decision ID 135621, Arsenic	Region 4
Channel Islands Harbor

LOE ID:

83620

Pollutant:

Toxicity

LOE Subgroup:

Toxicity

Matrix:

Sediment

Fraction:

None

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

TOXICITY TESTING

Data Used to Assess Water Quality:

Data Reference:

RWB4 Miscellaneous Ventura Coastal 2006

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Revised approach to toxicity test acceptability criteria using a statistical performance assessment. Environmental Toxicology and Chemistry, vol. 16, No. 6, pp 1322¿1329

Spatial Representation:

The samples were collected at stations 410VHCHN1, 410VHCHN2, 410VHCHN3, 410VHCHN4, and 410VHCHN5.

Temporal Representation:

The samples were collected in October 2006.

Environmental Conditions:

QAPP Information:

Data quality is good. Data results were recorded in the SWAMP database and follwed SWAMP protocols.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 135621, Arsenic	Region 4
Channel Islands Harbor

LOE ID:

257436

Pollutant:

Arsenic

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-12 (Oxn_CI-12_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135621, Arsenic	Region 4
Channel Islands Harbor

LOE ID:

257526

Pollutant:

Arsenic

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-09 (Oxn_CI-09_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135621, Arsenic	Region 4
Channel Islands Harbor

LOE ID:

257323

Pollutant:

Arsenic

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-11 (Oxn_CI-11_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135621, Arsenic	Region 4
Channel Islands Harbor

LOE ID:

257540

Pollutant:

Arsenic

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-31 (Oxn_CI-31_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135621, Arsenic	Region 4
Channel Islands Harbor

LOE ID:

257546

Pollutant:

Arsenic

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-07 (Oxn_CI-07_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135621, Arsenic	Region 4
Channel Islands Harbor

LOE ID:

257354

Pollutant:

Arsenic

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-16 (Oxn_CI-16_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135621, Arsenic	Region 4
Channel Islands Harbor

LOE ID:

257362

Pollutant:

Arsenic

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-06 (Oxn_CI-06_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-09 and 2018-10-09

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135621, Arsenic	Region 4
Channel Islands Harbor

LOE ID:

257457

Pollutant:

Arsenic

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-20 (Oxn_CI-20_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135621, Arsenic	Region 4
Channel Islands Harbor

LOE ID:

257458

Pollutant:

Arsenic

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-26 (Oxn_CI-26_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135621, Arsenic	Region 4
Channel Islands Harbor

LOE ID:

257559

Pollutant:

Arsenic

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-10 (Oxn_CI-10_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135621, Arsenic	Region 4
Channel Islands Harbor

LOE ID:

257374

Pollutant:

Arsenic

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-19 (Oxn_CI-19_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135621, Arsenic	Region 4
Channel Islands Harbor

LOE ID:

257380

Pollutant:

Arsenic

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-25 (Oxn_CI-25_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135621, Arsenic	Region 4
Channel Islands Harbor

LOE ID:

257381

Pollutant:

Arsenic

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-27 (Oxn_CI-27_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135621, Arsenic	Region 4
Channel Islands Harbor

LOE ID:

257487

Pollutant:

Arsenic

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-03 (Oxn_CI-03_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135621, Arsenic	Region 4
Channel Islands Harbor

LOE ID:

257586

Pollutant:

Arsenic

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-15 (Oxn_CI-15_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135621, Arsenic	Region 4
Channel Islands Harbor

LOE ID:

257297

Pollutant:

Arsenic

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-23 (Oxn_CI-23_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135621, Arsenic	Region 4
Channel Islands Harbor

LOE ID:

257401

Pollutant:

Arsenic

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-13 (Oxn_CI-13_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135621, Arsenic	Region 4
Channel Islands Harbor

LOE ID:

245661

Pollutant:

Arsenic

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The evaluation guideline for arsenic is the effects range median (ERM) value of 70 ug/g dry weight (Long et al., 1995).

Guideline Reference:

Incidence of adverse biological effects within ranges of chemical concentrations in marine and estuary sediments. Environmental Management. 19, (1): 81-97

Spatial Representation:

Data were collected from 1 station(s). Station Code(s): 410CHN003 (Channel Islands Harbor CI3).

Temporal Representation:

Data for this waterbody were collected over the date range 2017-05-24 to 2017-05-24

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 135621, Arsenic	Region 4
Channel Islands Harbor

LOE ID:

245825

Pollutant:

Arsenic

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The evaluation guideline for arsenic is the effects range median (ERM) value of 70 ug/g dry weight (Long et al., 1995).

Guideline Reference:

Incidence of adverse biological effects within ranges of chemical concentrations in marine and estuary sediments. Environmental Management. 19, (1): 81-97

Spatial Representation:

Data were collected from 1 station(s). Station Code(s): 410CHN005 (Channel Islands Harbor CI5).

Temporal Representation:

Data for this waterbody were collected over the date range 2017-05-24 to 2017-05-24

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 135621, Arsenic	Region 4
Channel Islands Harbor

LOE ID:

245923

Pollutant:

Arsenic

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The evaluation guideline for arsenic is the effects range median (ERM) value of 70 ug/g dry weight (Long et al., 1995).

Guideline Reference:

Incidence of adverse biological effects within ranges of chemical concentrations in marine and estuary sediments. Environmental Management. 19, (1): 81-97

Spatial Representation:

Data were collected from 1 station(s). Station Code(s): 410CHN001 (Channel Islands Harbor CI1).

Temporal Representation:

Data for this waterbody were collected over the date range 2017-05-24 to 2017-05-24

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 135621, Arsenic	Region 4
Channel Islands Harbor

LOE ID:

257320

Pollutant:

Arsenic

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-24 (Oxn_CI-24_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135621, Arsenic	Region 4
Channel Islands Harbor

LOE ID:

257519

Pollutant:

Arsenic

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-22 (Oxn_CI-22_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135621, Arsenic	Region 4
Channel Islands Harbor

LOE ID:

257413

Pollutant:

Arsenic

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-08 (Oxn_CI-08_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135621, Arsenic	Region 4
Channel Islands Harbor

LOE ID:

257611

Pollutant:

Arsenic

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-17 (Oxn_CI-17_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135621, Arsenic	Region 4
Channel Islands Harbor

LOE ID:

257306

Pollutant:

Arsenic

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-21 (Oxn_CI-21_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135621, Arsenic	Region 4
Channel Islands Harbor

LOE ID:

257503

Pollutant:

Arsenic

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-18 (Oxn_CI-18_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135621, Arsenic	Region 4
Channel Islands Harbor

LOE ID:

257502

Pollutant:

Arsenic

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-02 (Oxn_CI-02_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135621, Arsenic	Region 4
Channel Islands Harbor

LOE ID:

245235

Pollutant:

Arsenic

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The evaluation guideline for arsenic is the effects range median (ERM) value of 70 ug/g dry weight (Long et al., 1995).

Guideline Reference:

Incidence of adverse biological effects within ranges of chemical concentrations in marine and estuary sediments. Environmental Management. 19, (1): 81-97

Spatial Representation:

Data were collected from 1 station(s). Station Code(s): B18-10046 (B18-10046).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-08-18 to 2018-08-18

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.


DECISION ID	135663	Region 4
Channel Islands Harbor

Pollutant:	Azinphos-methyl (Guthion)
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)(2018)
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.

Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.

Line of Evidence (LOE) for Decision ID 135663, Azinphos-methyl (Guthion)	Region 4
Channel Islands Harbor

LOE ID:

257842

Pollutant:

Azinphos-methyl (Guthion)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Azinphos Methyl. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The National Recommended Water Quality Criteria for Azinphos Methyl (Guthion) expressed as a 4-day average for the protection of saltwater aquatic life is a maximum of 0.01 ug/l.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-19 (Oxn_CI-19_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135663, Azinphos-methyl (Guthion)	Region 4
Channel Islands Harbor

LOE ID:

83626

Pollutant:

Azinphos-methyl (Guthion)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

State Water Board staff assessed 4 data for Channel Islands Harbor to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Azinphos methyl.

Data Reference:

RWB4 Miscellaneous Ventura Coastal 2006

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The Azinphos methyl (Guthion) criteria for the protection of saltwater aquatic life is 0.01 ug/L (National Recommended Water Quality Criteria, 2009).

Guideline Reference:

Spatial Representation:

Data for this line of evidence for Channel Islands Harbor was collected at 1 monitoring site [ Channel Islands Harbor 5 - 410VHCHN5]

Temporal Representation:

Data was collected on a single day 10/12/2006.

Environmental Conditions:

Staff is not aware of any special conditions that might affect interpretation of the data.

QAPP Information:

The SWAMP QAPP (2008) was followed.

QAPP Information Reference(s):

Surface Water Ambient Monitoring Program Quality Assurance Program Plan

Line of Evidence (LOE) for Decision ID 135663, Azinphos-methyl (Guthion)	Region 4
Channel Islands Harbor

LOE ID:

257763

Pollutant:

Azinphos-methyl (Guthion)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Azinphos Methyl. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The National Recommended Water Quality Criteria for Azinphos Methyl (Guthion) expressed as a 4-day average for the protection of saltwater aquatic life is a maximum of 0.01 ug/l.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-17 (Oxn_CI-17_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-11-29

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135663, Azinphos-methyl (Guthion)	Region 4
Channel Islands Harbor

LOE ID:

257762

Pollutant:

Azinphos-methyl (Guthion)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Azinphos Methyl. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The National Recommended Water Quality Criteria for Azinphos Methyl (Guthion) expressed as a 4-day average for the protection of saltwater aquatic life is a maximum of 0.01 ug/l.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-18 (Oxn_CI-18_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135663, Azinphos-methyl (Guthion)	Region 4
Channel Islands Harbor

LOE ID:

257761

Pollutant:

Azinphos-methyl (Guthion)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Azinphos Methyl. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The National Recommended Water Quality Criteria for Azinphos Methyl (Guthion) expressed as a 4-day average for the protection of saltwater aquatic life is a maximum of 0.01 ug/l.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-27 (Oxn_CI-27_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135663, Azinphos-methyl (Guthion)	Region 4
Channel Islands Harbor

LOE ID:

257760

Pollutant:

Azinphos-methyl (Guthion)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Azinphos Methyl. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The National Recommended Water Quality Criteria for Azinphos Methyl (Guthion) expressed as a 4-day average for the protection of saltwater aquatic life is a maximum of 0.01 ug/l.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-02 (Oxn_CI-02_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-11-29

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135663, Azinphos-methyl (Guthion)	Region 4
Channel Islands Harbor

LOE ID:

257829

Pollutant:

Azinphos-methyl (Guthion)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Azinphos Methyl. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The National Recommended Water Quality Criteria for Azinphos Methyl (Guthion) expressed as a 4-day average for the protection of saltwater aquatic life is a maximum of 0.01 ug/l.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-31 (Oxn_CI-31_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135663, Azinphos-methyl (Guthion)	Region 4
Channel Islands Harbor

LOE ID:

257828

Pollutant:

Azinphos-methyl (Guthion)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Azinphos Methyl. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The National Recommended Water Quality Criteria for Azinphos Methyl (Guthion) expressed as a 4-day average for the protection of saltwater aquatic life is a maximum of 0.01 ug/l.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-23 (Oxn_CI-23_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135663, Azinphos-methyl (Guthion)	Region 4
Channel Islands Harbor

LOE ID:

257826

Pollutant:

Azinphos-methyl (Guthion)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Azinphos Methyl. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The National Recommended Water Quality Criteria for Azinphos Methyl (Guthion) expressed as a 4-day average for the protection of saltwater aquatic life is a maximum of 0.01 ug/l.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-12 (Oxn_CI-12_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135663, Azinphos-methyl (Guthion)	Region 4
Channel Islands Harbor

LOE ID:

257747

Pollutant:

Azinphos-methyl (Guthion)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Azinphos Methyl. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The National Recommended Water Quality Criteria for Azinphos Methyl (Guthion) expressed as a 4-day average for the protection of saltwater aquatic life is a maximum of 0.01 ug/l.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-25 (Oxn_CI-25_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135663, Azinphos-methyl (Guthion)	Region 4
Channel Islands Harbor

LOE ID:

257745

Pollutant:

Azinphos-methyl (Guthion)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Azinphos Methyl. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The National Recommended Water Quality Criteria for Azinphos Methyl (Guthion) expressed as a 4-day average for the protection of saltwater aquatic life is a maximum of 0.01 ug/l.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-14 (Oxn_CI-14_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135663, Azinphos-methyl (Guthion)	Region 4
Channel Islands Harbor

LOE ID:

257744

Pollutant:

Azinphos-methyl (Guthion)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Azinphos Methyl. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The National Recommended Water Quality Criteria for Azinphos Methyl (Guthion) expressed as a 4-day average for the protection of saltwater aquatic life is a maximum of 0.01 ug/l.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-15 (Oxn_CI-15_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135663, Azinphos-methyl (Guthion)	Region 4
Channel Islands Harbor

LOE ID:

257813

Pollutant:

Azinphos-methyl (Guthion)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Azinphos Methyl. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The National Recommended Water Quality Criteria for Azinphos Methyl (Guthion) expressed as a 4-day average for the protection of saltwater aquatic life is a maximum of 0.01 ug/l.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-21 (Oxn_CI-21_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135663, Azinphos-methyl (Guthion)	Region 4
Channel Islands Harbor

LOE ID:

257810

Pollutant:

Azinphos-methyl (Guthion)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Azinphos Methyl. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The National Recommended Water Quality Criteria for Azinphos Methyl (Guthion) expressed as a 4-day average for the protection of saltwater aquatic life is a maximum of 0.01 ug/l.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-11 (Oxn_CI-11_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135663, Azinphos-methyl (Guthion)	Region 4
Channel Islands Harbor

LOE ID:

257729

Pollutant:

Azinphos-methyl (Guthion)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Azinphos Methyl. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The National Recommended Water Quality Criteria for Azinphos Methyl (Guthion) expressed as a 4-day average for the protection of saltwater aquatic life is a maximum of 0.01 ug/l.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-03 (Oxn_CI-03_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135663, Azinphos-methyl (Guthion)	Region 4
Channel Islands Harbor

LOE ID:

257728

Pollutant:

Azinphos-methyl (Guthion)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Azinphos Methyl. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The National Recommended Water Quality Criteria for Azinphos Methyl (Guthion) expressed as a 4-day average for the protection of saltwater aquatic life is a maximum of 0.01 ug/l.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-22 (Oxn_CI-22_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135663, Azinphos-methyl (Guthion)	Region 4
Channel Islands Harbor

LOE ID:

257727

Pollutant:

Azinphos-methyl (Guthion)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Azinphos Methyl. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The National Recommended Water Quality Criteria for Azinphos Methyl (Guthion) expressed as a 4-day average for the protection of saltwater aquatic life is a maximum of 0.01 ug/l.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-06 (Oxn_CI-06_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135663, Azinphos-methyl (Guthion)	Region 4
Channel Islands Harbor

LOE ID:

257726

Pollutant:

Azinphos-methyl (Guthion)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Azinphos Methyl. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The National Recommended Water Quality Criteria for Azinphos Methyl (Guthion) expressed as a 4-day average for the protection of saltwater aquatic life is a maximum of 0.01 ug/l.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-20 (Oxn_CI-20_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135663, Azinphos-methyl (Guthion)	Region 4
Channel Islands Harbor

LOE ID:

257794

Pollutant:

Azinphos-methyl (Guthion)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Azinphos Methyl. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The National Recommended Water Quality Criteria for Azinphos Methyl (Guthion) expressed as a 4-day average for the protection of saltwater aquatic life is a maximum of 0.01 ug/l.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-10 (Oxn_CI-10_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135663, Azinphos-methyl (Guthion)	Region 4
Channel Islands Harbor

LOE ID:

257793

Pollutant:

Azinphos-methyl (Guthion)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Azinphos Methyl. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The National Recommended Water Quality Criteria for Azinphos Methyl (Guthion) expressed as a 4-day average for the protection of saltwater aquatic life is a maximum of 0.01 ug/l.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-16 (Oxn_CI-16_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135663, Azinphos-methyl (Guthion)	Region 4
Channel Islands Harbor

LOE ID:

257792

Pollutant:

Azinphos-methyl (Guthion)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Azinphos Methyl. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The National Recommended Water Quality Criteria for Azinphos Methyl (Guthion) expressed as a 4-day average for the protection of saltwater aquatic life is a maximum of 0.01 ug/l.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-24 (Oxn_CI-24_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135663, Azinphos-methyl (Guthion)	Region 4
Channel Islands Harbor

LOE ID:

257714

Pollutant:

Azinphos-methyl (Guthion)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Azinphos Methyl. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The National Recommended Water Quality Criteria for Azinphos Methyl (Guthion) expressed as a 4-day average for the protection of saltwater aquatic life is a maximum of 0.01 ug/l.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-26 (Oxn_CI-26_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135663, Azinphos-methyl (Guthion)	Region 4
Channel Islands Harbor

LOE ID:

257713

Pollutant:

Azinphos-methyl (Guthion)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Azinphos Methyl. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The National Recommended Water Quality Criteria for Azinphos Methyl (Guthion) expressed as a 4-day average for the protection of saltwater aquatic life is a maximum of 0.01 ug/l.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-13 (Oxn_CI-13_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135663, Azinphos-methyl (Guthion)	Region 4
Channel Islands Harbor

LOE ID:

257775

Pollutant:

Azinphos-methyl (Guthion)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Azinphos Methyl. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The National Recommended Water Quality Criteria for Azinphos Methyl (Guthion) expressed as a 4-day average for the protection of saltwater aquatic life is a maximum of 0.01 ug/l.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-08 (Oxn_CI-08_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135663, Azinphos-methyl (Guthion)	Region 4
Channel Islands Harbor

LOE ID:

257777

Pollutant:

Azinphos-methyl (Guthion)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Azinphos Methyl. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The National Recommended Water Quality Criteria for Azinphos Methyl (Guthion) expressed as a 4-day average for the protection of saltwater aquatic life is a maximum of 0.01 ug/l.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-09 (Oxn_CI-09_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135663, Azinphos-methyl (Guthion)	Region 4
Channel Islands Harbor

LOE ID:

257711

Pollutant:

Azinphos-methyl (Guthion)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Azinphos Methyl. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The National Recommended Water Quality Criteria for Azinphos Methyl (Guthion) expressed as a 4-day average for the protection of saltwater aquatic life is a maximum of 0.01 ug/l.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-07 (Oxn_CI-07_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY


DECISION ID	135623	Region 4
Channel Islands Harbor

Pollutant:	Benzene
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.

Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.

Line of Evidence (LOE) for Decision ID 135623, Benzene	Region 4
Channel Islands Harbor

LOE ID:

257633

Pollutant:

Benzene

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The benzene criterion for the protection of human health from consumption of organisms only is 71 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-17 (Oxn_CI-17_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2019-12-04 and 2019-12-04

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY


DECISION ID	135624	Region 4
Channel Islands Harbor

Pollutant:	Benzidine
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.

Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.

Line of Evidence (LOE) for Decision ID 135624, Benzidine	Region 4
Channel Islands Harbor

LOE ID:

257634

Pollutant:

Benzidine

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Benzidine. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The benzidine criterion for the protection of human health from consumption of organisms only is 0.00054 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-17 (Oxn_CI-17_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2019-12-04 to 2019-12-04

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY


DECISION ID	135626	Region 4
Channel Islands Harbor

Pollutant:	Benzo(a)anthracene
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)(2018)
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.

Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.

Line of Evidence (LOE) for Decision ID 135626, Benzo(a)anthracene	Region 4
Channel Islands Harbor

LOE ID:

83628

Pollutant:

Benzo(a)anthracene

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

State Water Board staff assessed 4 data for Channel Islands Harbor to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Benzo(a)anthracene.

Data Reference:

RWB4 Miscellaneous Ventura Coastal 2006

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

The Benzo(a)anthracene criteria for the protection of human health from consumption of organisms only is 0.049 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Data for this line of evidence for Channel Islands Harbor was collected at 1 monitoring site [ Channel Islands Harbor 5 - 410VHCHN5]

Temporal Representation:

Data was collected on a single day 10/12/2006.

Environmental Conditions:

Staff is not aware of any special conditions that might affect interpretation of the data.

QAPP Information:

The SWAMP QAPP (2008) was followed.

QAPP Information Reference(s):

Surface Water Ambient Monitoring Program Quality Assurance Program Plan

Line of Evidence (LOE) for Decision ID 135626, Benzo(a)anthracene	Region 4
Channel Islands Harbor

LOE ID:

245671

Pollutant:

Benzo(a)anthracene

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The evaluation guideline for benz[a]anthrazene is the probable effect level (PEL) of 693 ug/Kg dry weight (MacDonald et al., 1996).

Guideline Reference:

Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278

Spatial Representation:

Data were collected from 1 station(s). Station Code(s): 410CHN005 (Channel Islands Harbor CI5).

Temporal Representation:

Data for this waterbody were collected over the date range 2017-05-24 to 2017-05-24

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 135626, Benzo(a)anthracene	Region 4
Channel Islands Harbor

LOE ID:

245582

Pollutant:

Benzo(a)anthracene

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The evaluation guideline for benz[a]anthrazene is the probable effect level (PEL) of 693 ug/Kg dry weight (MacDonald et al., 1996).

Guideline Reference:

Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278

Spatial Representation:

Data were collected from 1 station(s). Station Code(s): B18-10046 (B18-10046).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-08-15 to 2018-08-15

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 135626, Benzo(a)anthracene	Region 4
Channel Islands Harbor

LOE ID:

245715

Pollutant:

Benzo(a)anthracene

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The evaluation guideline for benz[a]anthrazene is the probable effect level (PEL) of 693 ug/Kg dry weight (MacDonald et al., 1996).

Guideline Reference:

Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278

Spatial Representation:

Data were collected from 1 station(s). Station Code(s): 410CHN002 (Channel Islands Harbor CI2).

Temporal Representation:

Data for this waterbody were collected over the date range 2017-05-24 to 2017-05-24

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 135626, Benzo(a)anthracene	Region 4
Channel Islands Harbor

LOE ID:

245738

Pollutant:

Benzo(a)anthracene

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The evaluation guideline for benz[a]anthrazene is the probable effect level (PEL) of 693 ug/Kg dry weight (MacDonald et al., 1996).

Guideline Reference:

Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278

Spatial Representation:

Data were collected from 1 station(s). Station Code(s): 410CHN003 (Channel Islands Harbor CI3).

Temporal Representation:

Data for this waterbody were collected over the date range 2017-05-24 to 2017-05-24

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 135626, Benzo(a)anthracene	Region 4
Channel Islands Harbor

LOE ID:

245881

Pollutant:

Benzo(a)anthracene

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The evaluation guideline for benz[a]anthrazene is the probable effect level (PEL) of 693 ug/Kg dry weight (MacDonald et al., 1996).

Guideline Reference:

Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278

Spatial Representation:

Data were collected from 1 station(s). Station Code(s): 410CHN004 (Channel Islands Harbor CI4).

Temporal Representation:

Data for this waterbody were collected over the date range 2017-05-24 to 2017-05-24

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 135626, Benzo(a)anthracene	Region 4
Channel Islands Harbor

LOE ID:

245742

Pollutant:

Benzo(a)anthracene

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The evaluation guideline for benz[a]anthrazene is the probable effect level (PEL) of 693 ug/Kg dry weight (MacDonald et al., 1996).

Guideline Reference:

Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278

Spatial Representation:

Data were collected from 1 station(s). Station Code(s): 410CHN001 (Channel Islands Harbor CI1).

Temporal Representation:

Data for this waterbody were collected over the date range 2017-05-24 to 2017-05-24

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 135626, Benzo(a)anthracene	Region 4
Channel Islands Harbor

LOE ID:

83627

Pollutant:

Benzo(a)anthracene

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Boardstaff assessed SWAMP data for Channel Islands Harbor to determine beneficial use support and results are as follows: 0 of 5 samples exceed the criterion for Benzo(a)anthracene.

Data Reference:

RWB4 Miscellaneous Ventura Coastal 2006

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

In marine and estuarine sediments the probable effect level (predictive of sediment toxicity for sediment-dwelling organisms) for Benzo(a)anthracene is 692.53 ng/g dry weight (MacDonald et al., 1996).

Guideline Reference:

Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278

Spatial Representation:

Temporal Representation:

Data was collected over the time period 10/11/2006-10/12/2006.

Environmental Conditions:

Staff is not aware of any special conditions that might affect interpretation of the data.

QAPP Information:

2002 QAMP (Quality Assurance Management Plan) for the State of California's Surface Water Ambient Monitoring Program

QAPP Information Reference(s):

Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version)

Line of Evidence (LOE) for Decision ID 135626, Benzo(a)anthracene	Region 4
Channel Islands Harbor

LOE ID:

257632

Pollutant:

Benzo(a)anthracene

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Benz(a)anthracene. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The benzo(a)anthracene criterion for the protection of human health from consumption of organisms only is 0.049 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-17 (Oxn_CI-17_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2019-12-04 to 2019-12-04

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY


DECISION ID	135625	Region 4
Channel Islands Harbor

Pollutant:	Benzo(a)pyrene
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)(2018)
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence are necessary to assess listing status. 2 lines of evidence are available in the administrative record to assess this pollutant. 0 of 1 sample exceeded the CRITERIA. 0 of 9 samples exceeded the CRITERIA. Based on the readily available data and information, the weight of evidence indicates that there is insufficient justification for placing this water segment-pollutant combination on the CWA section 303(d) List. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. 0 of 1 and 0 of 5 samples exceeded the CRITERIA and this sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is fully supported using table 3.1. 4. Pursuant to SECTION 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.

Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.

Line of Evidence (LOE) for Decision ID 135625, Benzo(a)pyrene	Region 4
Channel Islands Harbor

LOE ID:

83631

Pollutant:

Benzo(a)pyrene

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

State Water Board staff assessed 4 data for Channel Islands Harbor to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Benzo(a)pyrene.

Data Reference:

RWB4 Miscellaneous Ventura Coastal 2006

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

The Benzo(a)Pyrene criteria for the protection of human health from consumption of organisms only is 0.049 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Data for this line of evidence for Channel Islands Harbor was collected at 1 monitoring site [ Channel Islands Harbor 5 - 410VHCHN5]

Temporal Representation:

Data was collected on a single day 10/12/2006.

Environmental Conditions:

Staff is not aware of any special conditions that might affect interpretation of the data.

QAPP Information:

The SWAMP QAPP (2008) was followed.

QAPP Information Reference(s):

Surface Water Ambient Monitoring Program Quality Assurance Program Plan

Line of Evidence (LOE) for Decision ID 135625, Benzo(a)pyrene	Region 4
Channel Islands Harbor

LOE ID:

83629

Pollutant:

Benzo(a)pyrene

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Boardstaff assessed SWAMP data for Channel Islands Harbor to determine beneficial use support and results are as follows: 0 of 5 samples exceed the criterion for Benzo(a)pyrene.

Data Reference:

RWB4 Miscellaneous Ventura Coastal 2006

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

In marine and estuarine sediments the probable effect level (predictive of sediment toxicity for sediment-dwelling organisms) for Benzo(a)pyrene is 763.22 ng/g dry weight (MacDonald et al., 1996).

Guideline Reference:

Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278

Spatial Representation:

Temporal Representation:

Data was collected over the time period 10/11/2006-10/12/2006.

Environmental Conditions:

Staff is not aware of any special conditions that might affect interpretation of the data.

QAPP Information:

2002 QAMP (Quality Assurance Management Plan) for the State of California's Surface Water Ambient Monitoring Program

QAPP Information Reference(s):

Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version)

Line of Evidence (LOE) for Decision ID 135625, Benzo(a)pyrene	Region 4
Channel Islands Harbor

LOE ID:

257649

Pollutant:

Benzo(a)pyrene

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Benzo(a)pyrene. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The benzo(a)pyrene criterion for the protection of human health from consumption of organisms only is 0.049 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-17 (Oxn_CI-17_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2019-12-04 to 2019-12-04

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135625, Benzo(a)pyrene	Region 4
Channel Islands Harbor

LOE ID:

246176

Pollutant:

Benzo(a)pyrene

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The evaluation guideline for benzo[a]pyrene is the probable effect level (PEL) of 763 ug/kg dry weight (MacDonald et al., 1996).

Guideline Reference:

Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278

Spatial Representation:

Data were collected from 1 station(s). Station Code(s): 410CHN005 (Channel Islands Harbor CI5).

Temporal Representation:

Data for this waterbody were collected over the date range 2017-05-24 to 2017-05-24

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 135625, Benzo(a)pyrene	Region 4
Channel Islands Harbor

LOE ID:

246253

Pollutant:

Benzo(a)pyrene

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The evaluation guideline for benzo[a]pyrene is the probable effect level (PEL) of 763 ug/kg dry weight (MacDonald et al., 1996).

Guideline Reference:

Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278

Spatial Representation:

Data were collected from 1 station(s). Station Code(s): 410CHN004 (Channel Islands Harbor CI4).

Temporal Representation:

Data for this waterbody were collected over the date range 2017-05-24 to 2017-05-24

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 135625, Benzo(a)pyrene	Region 4
Channel Islands Harbor

LOE ID:

246024

Pollutant:

Benzo(a)pyrene

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The evaluation guideline for benzo[a]pyrene is the probable effect level (PEL) of 763 ug/kg dry weight (MacDonald et al., 1996).

Guideline Reference:

Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278

Spatial Representation:

Data were collected from 1 station(s). Station Code(s): 410CHN003 (Channel Islands Harbor CI3).

Temporal Representation:

Data for this waterbody were collected over the date range 2017-05-24 to 2017-05-24

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 135625, Benzo(a)pyrene	Region 4
Channel Islands Harbor

LOE ID:

246115

Pollutant:

Benzo(a)pyrene

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The evaluation guideline for benzo[a]pyrene is the probable effect level (PEL) of 763 ug/kg dry weight (MacDonald et al., 1996).

Guideline Reference:

Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278

Spatial Representation:

Data were collected from 1 station(s). Station Code(s): 410CHN002 (Channel Islands Harbor CI2).

Temporal Representation:

Data for this waterbody were collected over the date range 2017-05-24 to 2017-05-24

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.


DECISION ID	135627	Region 4
Channel Islands Harbor

Pollutant:	Benzo[b]fluoranthene
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.

Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.

Line of Evidence (LOE) for Decision ID 135627, Benzo[b]fluoranthene	Region 4
Channel Islands Harbor

LOE ID:

257666

Pollutant:

Benzo[b]fluoranthene

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Benzo(b)fluoranthene. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The benzo(b)flouranthene criterion for the protection of human health from consumption of organisms only is 0.049 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-17 (Oxn_CI-17_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2019-12-04 to 2019-12-04

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY


DECISION ID	135628	Region 4
Channel Islands Harbor

Pollutant:	Benzo[k]fluoranthene
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)(2018)
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence are necessary to assess listing status. 1 line of evidence is available in the administrative record to assess this pollutant. 0 of 1 sample exceeded the CRITERIA. Based on the readily available data and information, the weight of evidence indicates that there is insufficient justification for placing this water segment-pollutant combination on the CWA section 303(d) List. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. 0 of 1 sample exceeded the CRITERIA and this sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is fully supported using table 3.1. 4. Pursuant to SECTION 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.

Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.

Line of Evidence (LOE) for Decision ID 135628, Benzo[k]fluoranthene	Region 4
Channel Islands Harbor

LOE ID:

83637

Pollutant:

Benzo[k]fluoranthene

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

State Water Board staff assessed 4 data for Channel Islands Harbor to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Benzo(k)fluoranthene.

Data Reference:

RWB4 Miscellaneous Ventura Coastal 2006

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

The Benzo(k)Fluoranthene criteria for the protection of human health from consumption of organisms only is 0.049 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Data for this line of evidence for Channel Islands Harbor was collected at 1 monitoring site [ Channel Islands Harbor 5 - 410VHCHN5]

Temporal Representation:

Data was collected on a single day 10/12/2006.

Environmental Conditions:

Staff is not aware of any special conditions that might affect interpretation of the data.

QAPP Information:

The SWAMP QAPP (2008) was followed.

QAPP Information Reference(s):

Surface Water Ambient Monitoring Program Quality Assurance Program Plan

Line of Evidence (LOE) for Decision ID 135628, Benzo[k]fluoranthene	Region 4
Channel Islands Harbor

LOE ID:

257682

Pollutant:

Benzo[k]fluoranthene

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Benzo(k)fluoranthene. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The benzo(k)fluoranthene criterion for the protection of human health from consumption of organisms only is 0.049 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-17 (Oxn_CI-17_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2019-12-04 to 2019-12-04

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY


DECISION ID	135620	Region 4
Channel Islands Harbor

Pollutant:	Bis(2-chloroisopropyl) ether
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.

Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.

Line of Evidence (LOE) for Decision ID 135620, Bis(2-chloroisopropyl) ether	Region 4
Channel Islands Harbor

LOE ID:

258170

Pollutant:

Bis(2-chloroisopropyl) ether

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The bis(2-chloroisopropyl)ether criterion for the protection of human health from consumption of organisms only is 170,000 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-17 (Oxn_CI-17_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2019-12-04 and 2019-12-04

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY


DECISION ID	135629	Region 4
Channel Islands Harbor

Pollutant:	Bis(2ethylhexyl)phthalate (DEHP)
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.

Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.

Line of Evidence (LOE) for Decision ID 135629, Bis(2ethylhexyl)phthalate (DEHP)	Region 4
Channel Islands Harbor

LOE ID:

258171

Pollutant:

Bis(2ethylhexyl)phthalate (DEHP)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Bis(2-ethylhexyl)phthalate. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The bis(2-ethylhexyl)phthalate criterion for the protection of human health from consumption of organisms only is 5.9 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-17 (Oxn_CI-17_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2019-12-04 to 2019-12-04

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY


DECISION ID	135631	Region 4
Channel Islands Harbor

Pollutant:	Bromoform
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.

Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.

Line of Evidence (LOE) for Decision ID 135631, Bromoform	Region 4
Channel Islands Harbor

LOE ID:

257895

Pollutant:

Bromoform

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The bromoform criterion for the protection of human health from consumption of organisms only is 360 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-17 (Oxn_CI-17_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2019-12-04 and 2019-12-04

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY


DECISION ID	135632	Region 4
Channel Islands Harbor

Pollutant:	Butyl benzyl phthalate
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.

Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.

Line of Evidence (LOE) for Decision ID 135632, Butyl benzyl phthalate	Region 4
Channel Islands Harbor

LOE ID:

257897

Pollutant:

Butyl benzyl phthalate

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The butylbenzylphthalate criterion for the protection of human health from consumption of organisms only is 5,200 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-17 (Oxn_CI-17_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2019-12-04 and 2019-12-04

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY


DECISION ID	135633	Region 4
Channel Islands Harbor

Pollutant:	Cadmium
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)(2018)
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence are necessary to assess listing status. 3 lines of evidence are available in the administrative record to assess this pollutant. 1 of 1 sample exceeded the CRITERIA for cadmium in fish tissue. 0 of 1 sample exceeded the CRITERIA for cadmium in shellfish. 0 of 5 samples exceeded the CRITERIA for cadmium in water. 0 of 11 samples exceeded the guideline for cadmium in sediment. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the CWA section 303(d) List. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. 0 of 1, 1 of 1, 0 of 25, and 0 of 11 samples exceeded the CRITERIA and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to SECTION 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.

Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because applicable water quality standards are not being exceeded.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.

Line of Evidence (LOE) for Decision ID 135633, Cadmium	Region 4
Channel Islands Harbor

LOE ID:

246235

Pollutant:

Cadmium

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The evaluation guideline for cadmium is the probable effect level (PEL) of 4.21 ug/g dry weight (MacDonald et al., 1996).

Guideline Reference:

Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278

Spatial Representation:

Data were collected from 1 station(s). Station Code(s): 410CHN001 (Channel Islands Harbor CI1).

Temporal Representation:

Data for this waterbody were collected over the date range 2017-05-24 to 2017-05-24

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 135633, Cadmium	Region 4
Channel Islands Harbor

LOE ID:

246304

Pollutant:

Cadmium

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The evaluation guideline for cadmium is the probable effect level (PEL) of 4.21 ug/g dry weight (MacDonald et al., 1996).

Guideline Reference:

Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278

Spatial Representation:

Data were collected from 1 station(s). Station Code(s): 410CHN004 (Channel Islands Harbor CI4).

Temporal Representation:

Data for this waterbody were collected over the date range 2017-05-24 to 2017-05-24

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 135633, Cadmium	Region 4
Channel Islands Harbor

LOE ID:

257960

Pollutant:

Cadmium

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved cadmium criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 9.3 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-25 (Oxn_CI-25_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135633, Cadmium	Region 4
Channel Islands Harbor

LOE ID:

258157

Pollutant:

Cadmium

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved cadmium criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 9.3 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-03 (Oxn_CI-03_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135633, Cadmium	Region 4
Channel Islands Harbor

LOE ID:

258158

Pollutant:

Cadmium

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved cadmium criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 9.3 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-13 (Oxn_CI-13_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135633, Cadmium	Region 4
Channel Islands Harbor

LOE ID:

258162

Pollutant:

Cadmium

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved cadmium criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 9.3 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-11 (Oxn_CI-11_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135633, Cadmium	Region 4
Channel Islands Harbor

LOE ID:

258163

Pollutant:

Cadmium

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved cadmium criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 9.3 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-10 (Oxn_CI-10_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135633, Cadmium	Region 4
Channel Islands Harbor

LOE ID:

258165

Pollutant:

Cadmium

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved cadmium criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 9.3 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-20 (Oxn_CI-20_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135633, Cadmium	Region 4
Channel Islands Harbor

LOE ID:

257983

Pollutant:

Cadmium

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved cadmium criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 9.3 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-02 (Oxn_CI-02_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135633, Cadmium	Region 4
Channel Islands Harbor

LOE ID:

257985

Pollutant:

Cadmium

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved cadmium criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 9.3 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-31 (Oxn_CI-31_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135633, Cadmium	Region 4
Channel Islands Harbor

LOE ID:

257882

Pollutant:

Cadmium

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved cadmium criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 9.3 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-24 (Oxn_CI-24_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135633, Cadmium	Region 4
Channel Islands Harbor

LOE ID:

258186

Pollutant:

Cadmium

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved cadmium criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 9.3 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-06 (Oxn_CI-06_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-09 and 2018-10-09

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135633, Cadmium	Region 4
Channel Islands Harbor

LOE ID:

258187

Pollutant:

Cadmium

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved cadmium criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 9.3 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-14 (Oxn_CI-14_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135633, Cadmium	Region 4
Channel Islands Harbor

LOE ID:

257887

Pollutant:

Cadmium

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved cadmium criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 9.3 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-12 (Oxn_CI-12_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135633, Cadmium	Region 4
Channel Islands Harbor

LOE ID:

257995

Pollutant:

Cadmium

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved cadmium criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 9.3 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-23 (Oxn_CI-23_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135633, Cadmium	Region 4
Channel Islands Harbor

LOE ID:

83620

Pollutant:

Toxicity

LOE Subgroup:

Toxicity

Matrix:

Sediment

Fraction:

None

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

TOXICITY TESTING

Data Used to Assess Water Quality:

Data Reference:

RWB4 Miscellaneous Ventura Coastal 2006

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Revised approach to toxicity test acceptability criteria using a statistical performance assessment. Environmental Toxicology and Chemistry, vol. 16, No. 6, pp 1322¿1329

Spatial Representation:

The samples were collected at stations 410VHCHN1, 410VHCHN2, 410VHCHN3, 410VHCHN4, and 410VHCHN5.

Temporal Representation:

The samples were collected in October 2006.

Environmental Conditions:

QAPP Information:

Data quality is good. Data results were recorded in the SWAMP database and follwed SWAMP protocols.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 135633, Cadmium	Region 4
Channel Islands Harbor

LOE ID:

82774

Pollutant:

Cadmium

LOE Subgroup:

Pollutant-Tissue

Matrix:

Tissue

Fraction:

Shellfish

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

Shellfish surveys

Data Used to Assess Water Quality:

Data Reference:

RWB4 Miscellaneous Ventura Coastal 2006

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The modified OEHHA Fish Contaminant Goal for cadmium in shellfish tissue is 3.3 ppm. This screening level assumes an average body weight of 70 kg and a consumption rate of 21 g/day. (Brodberg, R.K., and G.A. Pollock, 1999; Klasing, S., and R. Brodberg, 2008; USEPA, 2000)

Guideline Reference:

Prevalence of Selected Target Chemical Contaminants in Sport Fish From Two California Lakes: Public health designed screening study. Sacramento, CA: Office of Environmental Health Hazard Assessment

Guideline Reference:

Development of Fish Contaminant Goals and Advisory Tissue Levels for Common Contaminants in California Sport Fish: Chlordane, DDTs, Dieldrin, Methylmercury, PCBs, Selenium, and Toxaphene

Guideline Reference:

Guidance for Assessing Chemical Contaminant Data for Use In Fish Advisories Volume 1: Fish Sampling and Analysis

Spatial Representation:

Data for was collected at one station: Channel Islands Harbor 5 - 410VHCHN5.

Temporal Representation:

Data was collected on a single day 2/28/2007.

Environmental Conditions:

QAPP Information:

Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002

QAPP Information Reference(s):

Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version)

Line of Evidence (LOE) for Decision ID 135633, Cadmium	Region 4
Channel Islands Harbor

LOE ID:

83641

Pollutant:

Cadmium

LOE Subgroup:

Pollutant-Tissue

Matrix:

Tissue

Fraction:

Fish fillet

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

Fish tissue analysis

Data Used to Assess Water Quality:

The sample exceeded the guideline. Data were reported on a dry weight basis and were converted to a wet weight basis by multiplying the dry-weight concentration by a factor of 1 minus the percentage of moisture content expressed as a decimal.

Data Reference:

RWB4 Miscellaneous Ventura Coastal 2006

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The modified OEHHA Fish Contaminant Goal for cadmium in fish tissue is 2.2 ppm. This screening level assumes an average body weight of 70 kg and a consumption rate of 32 g/day. (Klasing, S., and R. Brodberg, 2008; USEPA, 2000)

Guideline Reference:

Development of Fish Contaminant Goals and Advisory Tissue Levels for Common Contaminants in California Sport Fish: Chlordane, DDTs, Dieldrin, Methylmercury, PCBs, Selenium, and Toxaphene

Guideline Reference:

Guidance for Assessing Chemical Contaminant Data for Use In Fish Advisories Volume 1: Fish Sampling and Analysis

Spatial Representation:

Samples are collected by hand from three sub-locations (A,B,C) from site 410VHCHN5. The three samples per site were averaged prior to assessment.

Temporal Representation:

Representative samples of locally abundant species were collected on February 28, 2007.

Environmental Conditions:

QAPP Information:

Samples were collected as part of the State Water Board's Surface Water Ambient Monitoring Program.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 135633, Cadmium	Region 4
Channel Islands Harbor

LOE ID:

83640

Pollutant:

Cadmium

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Boardstaff assessed SWAMP data for Channel Islands Harbor to determine beneficial use support and results are as follows: 0 of 5 samples exceed the criterion for Cadmium.

Data Reference:

RWB4 Miscellaneous Ventura Coastal 2006

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

In marine and estuarine sediments the probable effect level (predictive of sediment toxicity for sediment-dwelling organisms) for Cadmium is 4.21 ng/g dry weight (MacDonald et al., 1996).

Guideline Reference:

Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278

Spatial Representation:

Temporal Representation:

Data was collected over the time period 10/11/2006-10/12/2006.

Environmental Conditions:

Staff is not aware of any special conditions that might affect interpretation of the data.

QAPP Information:

2002 QAMP (Quality Assurance Management Plan) for the State of California's Surface Water Ambient Monitoring Program

QAPP Information Reference(s):

Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version)

Line of Evidence (LOE) for Decision ID 135633, Cadmium	Region 4
Channel Islands Harbor

LOE ID:

258094

Pollutant:

Cadmium

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved cadmium criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 9.3 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-16 (Oxn_CI-16_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135633, Cadmium	Region 4
Channel Islands Harbor

LOE ID:

257900

Pollutant:

Cadmium

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved cadmium criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 9.3 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-19 (Oxn_CI-19_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135633, Cadmium	Region 4
Channel Islands Harbor

LOE ID:

258102

Pollutant:

Cadmium

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved cadmium criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 9.3 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-22 (Oxn_CI-22_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135633, Cadmium	Region 4
Channel Islands Harbor

LOE ID:

258210

Pollutant:

Cadmium

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved cadmium criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 9.3 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-09 (Oxn_CI-09_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135633, Cadmium	Region 4
Channel Islands Harbor

LOE ID:

258109

Pollutant:

Cadmium

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved cadmium criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 9.3 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-07 (Oxn_CI-07_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135633, Cadmium	Region 4
Channel Islands Harbor

LOE ID:

257924

Pollutant:

Cadmium

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved cadmium criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 9.3 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-17 (Oxn_CI-17_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135633, Cadmium	Region 4
Channel Islands Harbor

LOE ID:

258026

Pollutant:

Cadmium

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved cadmium criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 9.3 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-27 (Oxn_CI-27_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135633, Cadmium	Region 4
Channel Islands Harbor

LOE ID:

257927

Pollutant:

Cadmium

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved cadmium criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 9.3 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-21 (Oxn_CI-21_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135633, Cadmium	Region 4
Channel Islands Harbor

LOE ID:

257929

Pollutant:

Cadmium

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved cadmium criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 9.3 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-15 (Oxn_CI-15_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135633, Cadmium	Region 4
Channel Islands Harbor

LOE ID:

257931

Pollutant:

Cadmium

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved cadmium criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 9.3 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-08 (Oxn_CI-08_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135633, Cadmium	Region 4
Channel Islands Harbor

LOE ID:

257933

Pollutant:

Cadmium

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved cadmium criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 9.3 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-18 (Oxn_CI-18_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135633, Cadmium	Region 4
Channel Islands Harbor

LOE ID:

258129

Pollutant:

Cadmium

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved cadmium criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 9.3 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-26 (Oxn_CI-26_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135633, Cadmium	Region 4
Channel Islands Harbor

LOE ID:

246653

Pollutant:

Cadmium

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The evaluation guideline for cadmium is the probable effect level (PEL) of 4.21 ug/g dry weight (MacDonald et al., 1996).

Guideline Reference:

Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278

Spatial Representation:

Data were collected from 1 station(s). Station Code(s): 410CHN003 (Channel Islands Harbor CI3).

Temporal Representation:

Data for this waterbody were collected over the date range 2017-05-24 to 2017-05-24

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 135633, Cadmium	Region 4
Channel Islands Harbor

LOE ID:

246450

Pollutant:

Cadmium

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The evaluation guideline for cadmium is the probable effect level (PEL) of 4.21 ug/g dry weight (MacDonald et al., 1996).

Guideline Reference:

Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278

Spatial Representation:

Data were collected from 1 station(s). Station Code(s): 410CHN005 (Channel Islands Harbor CI5).

Temporal Representation:

Data for this waterbody were collected over the date range 2017-05-24 to 2017-05-24

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 135633, Cadmium	Region 4
Channel Islands Harbor

LOE ID:

246631

Pollutant:

Cadmium

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The evaluation guideline for cadmium is the probable effect level (PEL) of 4.21 ug/g dry weight (MacDonald et al., 1996).

Guideline Reference:

Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278

Spatial Representation:

Data were collected from 1 station(s). Station Code(s): 410CHN002 (Channel Islands Harbor CI2).

Temporal Representation:

Data for this waterbody were collected over the date range 2017-05-24 to 2017-05-24

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 135633, Cadmium	Region 4
Channel Islands Harbor

LOE ID:

246126

Pollutant:

Cadmium

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The evaluation guideline for cadmium is the probable effect level (PEL) of 4.21 ug/g dry weight (MacDonald et al., 1996).

Guideline Reference:

Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278

Spatial Representation:

Data were collected from 1 station(s). Station Code(s): B18-10046 (B18-10046).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-08-18 to 2018-08-18

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.


DECISION ID	135634	Region 4
Channel Islands Harbor

Pollutant:	Carbon tetrachloride
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.

Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.

Line of Evidence (LOE) for Decision ID 135634, Carbon tetrachloride	Region 4
Channel Islands Harbor

LOE ID:

258354

Pollutant:

Carbon tetrachloride

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The carbon tetrachloride criterion for the protection of human health from consumption of organisms only is 4.4 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-17 (Oxn_CI-17_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2019-12-04 and 2019-12-04

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY


DECISION ID	135635	Region 4
Channel Islands Harbor

Pollutant:	Chlordane
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)(2018)
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	Insufficient information is available to determine beneficial use support chlordane in water or tissue with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available. This pollutant is also being considered for placement on the CWA section 303(d) List for chlordane in sediment under section 3.6 of the Listing Policy. Under section 3.6 at least two lines of evidence are necessary to assess listing status for pollutants sediment, and pollutant concentrations in sediment must be associated with sediment toxicity to justify adding that pollutant to the CWA section 303(d) List. 2 lines of evidence are available in the administrative record to assess this pollutant. 4 of the 11 samples exceed the guideline for chlordane in sediment. 0 of 5 samples exhibited sediment toxicity. Based on the readily available data and information, the weight of evidence indicates that there is insufficient justification for placing this water segment-pollutant combination on the CWA section 303(d) List. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. 4 of the 11 samples exceed the GUIDELINE. There is not an associated sediment toxicity data as required by Section 3.6 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.

Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.

Line of Evidence (LOE) for Decision ID 135635, Chlordane	Region 4
Channel Islands Harbor

LOE ID:

267652

Pollutant:

Chlordane

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Total Chlordane. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The chlordane criterion for the protection of human health from consumption of organisms only is 0.00059 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-15 (Oxn_CI-15_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135635, Chlordane	Region 4
Channel Islands Harbor

LOE ID:

246663

Pollutant:

Chlordane

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in pesticide concentrations found in bottom sediments or aquatic life.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The evaluation guideline for chlordane is the Effects Range Median (ERM) value of 6 ng/g dry weight (Long and Morgan, 1990).

Guideline Reference:

Spatial Representation:

Data were collected from 1 station(s). Station Code(s): 410CHN005 (Channel Islands Harbor CI5).

Temporal Representation:

Data for this waterbody were collected over the date range 2017-05-24 to 2017-05-24

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 135635, Chlordane	Region 4
Channel Islands Harbor

LOE ID:

246799

Pollutant:

Chlordane

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The evaluation guideline for chlordane is the Effects Range Median (ERM) value of 6 ng/g dry weight (Long and Morgan, 1990).

Guideline Reference:

Spatial Representation:

Data were collected from 1 station(s). Station Code(s): 410CHN002 (Channel Islands Harbor CI2).

Temporal Representation:

Data for this waterbody were collected over the date range 2017-05-24 to 2017-05-24

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 135635, Chlordane	Region 4
Channel Islands Harbor

LOE ID:

246331

Pollutant:

Chlordane

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The evaluation guideline for chlordane is the Effects Range Median (ERM) value of 6 ng/g dry weight (Long and Morgan, 1990).

Guideline Reference:

Spatial Representation:

Data were collected from 1 station(s). Station Code(s): 410CHN003 (Channel Islands Harbor CI3).

Temporal Representation:

Data for this waterbody were collected over the date range 2017-05-24 to 2017-05-24

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 135635, Chlordane	Region 4
Channel Islands Harbor

LOE ID:

82814

Pollutant:

Chlordane

LOE Subgroup:

Pollutant-Tissue

Matrix:

Tissue

Fraction:

Shellfish

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

Shellfish surveys

Data Used to Assess Water Quality:

The one sample did not exceed the guideline. Total chlordane was calculated as the sum of the following chlordane isomers: cis- and trans-chlordane, cis- and trans-nonachlor, and oxychlordane.

Data Reference:

RWB4 Miscellaneous Ventura Coastal 2006

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The modified OEHHA Fish Contaminant Goal for total chlordane in shellfish tissue is 6.0 ppb. This screening level assumes an average body weight of 70 kg and a consumption rate of 21 g/day for a 30 year exposure over a 70-year lifetime. This constituent is a carcinogen therefore the risk level is set to one in a million. (Brodberg, R.K., and G.A. Pollock, 1999; Klasing, S., and R. Brodberg, 2008)

Guideline Reference:

Prevalence of Selected Target Chemical Contaminants in Sport Fish From Two California Lakes: Public health designed screening study. Sacramento, CA: Office of Environmental Health Hazard Assessment

Guideline Reference:

Development of Fish Contaminant Goals and Advisory Tissue Levels for Common Contaminants in California Sport Fish: Chlordane, DDTs, Dieldrin, Methylmercury, PCBs, Selenium, and Toxaphene

Spatial Representation:

Data for was collected at one station: Channel Islands Harbor 5 - 410VHCHN5.

Temporal Representation:

Data was collected on a single day 2/28/2007.

Environmental Conditions:

QAPP Information:

Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002

QAPP Information Reference(s):

Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version)

Line of Evidence (LOE) for Decision ID 135635, Chlordane	Region 4
Channel Islands Harbor

LOE ID:

83645

Pollutant:

Chlordane

LOE Subgroup:

Pollutant-Tissue

Matrix:

Tissue

Fraction:

Fish fillet

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

Fish tissue analysis

Data Used to Assess Water Quality:

The sample did exceed the guideline. Data were reported on a dry weight basis and were converted to a wet weight basis by multiplying the dry-weight concentration by a factor of 1 minus the percentage of moisture content expressed as a decimal. Total chlordane is the sum of isomers: cis- and trans-nonachlor, oxychlordane, alpha- and gamma-chlordane, heptachlor, and heptachlor-epoxide.

Data Reference:

RWB4 Miscellaneous Ventura Coastal 2006

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The modified OEHHA Fish Contaminant Goal for total chlordane in fish tissue is 3.9 ppb. This screening level assumes an average body weight of 70 kg and a consumption rate of 32 g/day for a 30 year exposure over a 70-year lifetime. This constituent is a carcinogen therefore the risk level is set to one in a million. A cooking reduction factor of 1 is applied for skin-off fillets. (Klasing, S., and R. Brodberg, 2008)

Guideline Reference:

Development of Fish Contaminant Goals and Advisory Tissue Levels for Common Contaminants in California Sport Fish: Chlordane, DDTs, Dieldrin, Methylmercury, PCBs, Selenium, and Toxaphene

Spatial Representation:

Samples are collected by hand from three sub-locations (A,B,C) from site 410VHCHN5. The three samples per site were averaged prior to assessment.

Temporal Representation:

Representative samples of locally abundant species were collected on February 28, 2007.

Environmental Conditions:

QAPP Information:

Samples were collected as part of the State Water Board's Surface Water Ambient Monitoring Program.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 135635, Chlordane	Region 4
Channel Islands Harbor

LOE ID:

83643

Pollutant:

Chlordane

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

State Water Board staff assessed SWAMP data for Channel Islands Harbor to determine beneficial use support and results are as follows: 0 of 0 samples exceed the criterion for Chlordane, Total. Total chlordane was calculated as the sum of the following chlordane isomers: cis- and trans-Total Chlordane- and trans-nonachlor, and oxychlordane. One sample result(s) were not used in the assessment because the laboratory data reporting limit(s) was above the objective and therefore the results could not be quantified with the level of certainty required by the Listing Policy.

Data Reference:

RWB4 Miscellaneous Ventura Coastal 2006

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

The Chlordane criteria for the protection of human health from consumption of organisms only is 0.00059 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Data for this line of evidence for Channel Islands Harbor was collected at 1 monitoring site [ Channel Islands Harbor 5 - 410VHCHN5]

Temporal Representation:

Data was collected on a single day 10/12/2006.

Environmental Conditions:

Staff is not aware of any special conditions that might affect interpretation of the data.

QAPP Information:

SWAMP data collected before September 2008 followed the SWAMP QAMP.

QAPP Information Reference(s):

Surface Water Ambient Monitoring Program Quality Assurance Program Plan

Line of Evidence (LOE) for Decision ID 135635, Chlordane	Region 4
Channel Islands Harbor

LOE ID:

83642

Pollutant:

Chlordane

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

State Water Board staff assessed 4 data for Channel Islands Harbor to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Total Chlordane. Total chlordane was calculated as the sum of the following chlordane isomers: cis- and trans-Total Chlordane- and trans-nonachlor, and oxychlordane.

Data Reference:

RWB4 Miscellaneous Ventura Coastal 2006

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

The Total Chlordane criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saltwater is 0.004 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Data for this line of evidence for Channel Islands Harbor was collected at 1 monitoring site [ Channel Islands Harbor 5 - 410VHCHN5]

Temporal Representation:

Data was collected on a single day 10/12/2006.

Environmental Conditions:

Staff is not aware of any special conditions that might affect interpretation of the data.

QAPP Information:

The SWAMP QAPP (2008) was followed.

QAPP Information Reference(s):

Surface Water Ambient Monitoring Program Quality Assurance Program Plan

Line of Evidence (LOE) for Decision ID 135635, Chlordane	Region 4
Channel Islands Harbor

LOE ID:

83646

Pollutant:

Chlordane

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

4 of 5 samples collected exceeded the guideline for chlordane concentration (Sum of trans-Chlordane, cis-Chlordane, cis-Nonachlor, trans-Nonachlor, and Oxychlordane).

Data Reference:

RWB4 Miscellaneous Ventura Coastal 2006

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

All waters shall be maintained free of toxic substances in concentrations that produce detrimental physiological responses in human, plant, animal, or aquatic life. Waters shall not contain substances in concentrations that result in the deposition of material that causes nuisance or adversely affects beneficial uses. (Water Quality Control Plan for the Coastal Watersheds of Los Angeles And Ventura Counties).

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The Effects Range Medium (ER-M) for Chlordane in marine sediments is 6 ppb dry weight (6 ug/kg dry weight).

Guideline Reference:

Spatial Representation:

Data were collected at the following stations 410VHCHN1 (Channel Islands Harbor 1), 410VHCHN2 (Channel Islands Harbor 2), 410VHCHN3 (Channel Islands Harbor 3), 410VHCHN4 (Channel Islands Harbor 4) and 410VHCHN5 (Channel Islands Harbor 5).

Temporal Representation:

The samples were collected on 10/11/2006 and 10/12/2006.

Environmental Conditions:

QAPP Information:

The SWAMP QAPP (2006) was followed.

QAPP Information Reference(s):

Surface Water Ambient Monitoring Program Quality Assurance Program Plan

Line of Evidence (LOE) for Decision ID 135635, Chlordane	Region 4
Channel Islands Harbor

LOE ID:

83644

Pollutant:

Chlordane

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

The sample did not exceed the criterion continuous concentration for chlordane (total). Total chlordane is assessed as the sum of cis-chlordane, trans-chlordane, cis-nonachlor, trans-nonachlor, and oxychlordane.

Data Reference:

RWB4 Miscellaneous Ventura Coastal 2006

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

The chlordane criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in marine water is 0.004 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Sample collected at station 410VHCHN5 ; Channel Island Harbor 5

Temporal Representation:

Sample collected 10/12/2006.

Environmental Conditions:

QAPP Information:

SWAMP QAPP (2008) was followed.

QAPP Information Reference(s):

Surface Water Ambient Monitoring Program Quality Assurance Program Plan

Line of Evidence (LOE) for Decision ID 135635, Chlordane	Region 4
Channel Islands Harbor

LOE ID:

83620

Pollutant:

Toxicity

LOE Subgroup:

Toxicity

Matrix:

Sediment

Fraction:

None

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

TOXICITY TESTING

Data Used to Assess Water Quality:

Data Reference:

RWB4 Miscellaneous Ventura Coastal 2006

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Revised approach to toxicity test acceptability criteria using a statistical performance assessment. Environmental Toxicology and Chemistry, vol. 16, No. 6, pp 1322¿1329

Spatial Representation:

The samples were collected at stations 410VHCHN1, 410VHCHN2, 410VHCHN3, 410VHCHN4, and 410VHCHN5.

Temporal Representation:

The samples were collected in October 2006.

Environmental Conditions:

QAPP Information:

Data quality is good. Data results were recorded in the SWAMP database and follwed SWAMP protocols.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 135635, Chlordane	Region 4
Channel Islands Harbor

LOE ID:

246641

Pollutant:

Chlordane

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The evaluation guideline for chlordane is the Effects Range Median (ERM) value of 6 ng/g dry weight (Long and Morgan, 1990).

Guideline Reference:

Spatial Representation:

Data were collected from 1 station(s). Station Code(s): B18-10046 (B18-10046).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-08-15 to 2018-08-15

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 135635, Chlordane	Region 4
Channel Islands Harbor

LOE ID:

246801

Pollutant:

Chlordane

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The evaluation guideline for chlordane is the Effects Range Median (ERM) value of 6 ng/g dry weight (Long and Morgan, 1990).

Guideline Reference:

Spatial Representation:

Data were collected from 1 station(s). Station Code(s): 410CHN004 (Channel Islands Harbor CI4).

Temporal Representation:

Data for this waterbody were collected over the date range 2017-05-24 to 2017-05-24

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 135635, Chlordane	Region 4
Channel Islands Harbor

LOE ID:

246307

Pollutant:

Chlordane

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The evaluation guideline for chlordane is the Effects Range Median (ERM) value of 6 ng/g dry weight (Long and Morgan, 1990).

Guideline Reference:

Spatial Representation:

Data were collected from 1 station(s). Station Code(s): 410CHN001 (Channel Islands Harbor CI1).

Temporal Representation:

Data for this waterbody were collected over the date range 2017-05-24 to 2017-05-24

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 135635, Chlordane	Region 4
Channel Islands Harbor

LOE ID:

267368

Pollutant:

Chlordane

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Total Chlordane. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The chlordane criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.004 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-23 (Oxn_CI-23_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135635, Chlordane	Region 4
Channel Islands Harbor

LOE ID:

267369

Pollutant:

Chlordane

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Total Chlordane. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The chlordane criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.004 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-02 (Oxn_CI-02_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-11-29

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135635, Chlordane	Region 4
Channel Islands Harbor

LOE ID:

267656

Pollutant:

Chlordane

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Total Chlordane. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The chlordane criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.004 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-13 (Oxn_CI-13_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135635, Chlordane	Region 4
Channel Islands Harbor

LOE ID:

267657

Pollutant:

Chlordane

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Total Chlordane. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The chlordane criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.004 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-25 (Oxn_CI-25_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135635, Chlordane	Region 4
Channel Islands Harbor

LOE ID:

267570

Pollutant:

Chlordane

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Total Chlordane. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The chlordane criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.004 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-18 (Oxn_CI-18_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135635, Chlordane	Region 4
Channel Islands Harbor

LOE ID:

267381

Pollutant:

Chlordane

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Total Chlordane. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The chlordane criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.004 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-08 (Oxn_CI-08_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135635, Chlordane	Region 4
Channel Islands Harbor

LOE ID:

267757

Pollutant:

Chlordane

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Total Chlordane. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The chlordane criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.004 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-11 (Oxn_CI-11_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135635, Chlordane	Region 4
Channel Islands Harbor

LOE ID:

267390

Pollutant:

Chlordane

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Total Chlordane. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The chlordane criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.004 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-19 (Oxn_CI-19_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135635, Chlordane	Region 4
Channel Islands Harbor

LOE ID:

267391

Pollutant:

Chlordane

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Total Chlordane. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The chlordane criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.004 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-31 (Oxn_CI-31_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135635, Chlordane	Region 4
Channel Islands Harbor

LOE ID:

267489

Pollutant:

Chlordane

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Total Chlordane. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The chlordane criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.004 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-12 (Oxn_CI-12_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135635, Chlordane	Region 4
Channel Islands Harbor

LOE ID:

267589

Pollutant:

Chlordane

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Total Chlordane. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The chlordane criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.004 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-14 (Oxn_CI-14_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135635, Chlordane	Region 4
Channel Islands Harbor

LOE ID:

267591

Pollutant:

Chlordane

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Total Chlordane. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The chlordane criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.004 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-07 (Oxn_CI-07_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135635, Chlordane	Region 4
Channel Islands Harbor

LOE ID:

267775

Pollutant:

Chlordane

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Total Chlordane. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The chlordane criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.004 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-09 (Oxn_CI-09_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135635, Chlordane	Region 4
Channel Islands Harbor

LOE ID:

267776

Pollutant:

Chlordane

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Total Chlordane. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The chlordane criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.004 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-27 (Oxn_CI-27_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135635, Chlordane	Region 4
Channel Islands Harbor

LOE ID:

267777

Pollutant:

Chlordane

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Total Chlordane. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The chlordane criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.004 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-15 (Oxn_CI-15_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135635, Chlordane	Region 4
Channel Islands Harbor

LOE ID:

267411

Pollutant:

Chlordane

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Total Chlordane. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The chlordane criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.004 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-22 (Oxn_CI-22_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135635, Chlordane	Region 4
Channel Islands Harbor

LOE ID:

267413

Pollutant:

Chlordane

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Total Chlordane. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The chlordane criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.004 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-24 (Oxn_CI-24_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135635, Chlordane	Region 4
Channel Islands Harbor

LOE ID:

267430

Pollutant:

Chlordane

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Total Chlordane. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The chlordane criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.004 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-03 (Oxn_CI-03_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135635, Chlordane	Region 4
Channel Islands Harbor

LOE ID:

267432

Pollutant:

Chlordane

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Total Chlordane. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The chlordane criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.004 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-26 (Oxn_CI-26_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135635, Chlordane	Region 4
Channel Islands Harbor

LOE ID:

267530

Pollutant:

Chlordane

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Total Chlordane. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The chlordane criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.004 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-16 (Oxn_CI-16_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135635, Chlordane	Region 4
Channel Islands Harbor

LOE ID:

267630

Pollutant:

Chlordane

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Total Chlordane. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The chlordane criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.004 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-10 (Oxn_CI-10_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135635, Chlordane	Region 4
Channel Islands Harbor

LOE ID:

267549

Pollutant:

Chlordane

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Total Chlordane. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The chlordane criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.004 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-06 (Oxn_CI-06_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135635, Chlordane	Region 4
Channel Islands Harbor

LOE ID:

267361

Pollutant:

Chlordane

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Total Chlordane. Although a total of 4 samples were collected, 4 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The chlordane criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.004 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-17 (Oxn_CI-17_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2019-12-04

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135635, Chlordane	Region 4
Channel Islands Harbor

LOE ID:

267362

Pollutant:

Chlordane

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Total Chlordane. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The chlordane criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.004 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-20 (Oxn_CI-20_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135635, Chlordane	Region 4
Channel Islands Harbor

LOE ID:

267367

Pollutant:

Chlordane

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Total Chlordane. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The chlordane criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.004 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-21 (Oxn_CI-21_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135635, Chlordane	Region 4
Channel Islands Harbor

LOE ID:

267833

Pollutant:

Chlordane

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Total Chlordane. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The chlordane criterion for the protection of human health from consumption of organisms only is 0.00059 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-13 (Oxn_CI-13_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135635, Chlordane	Region 4
Channel Islands Harbor

LOE ID:

267835

Pollutant:

Chlordane

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Total Chlordane. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The chlordane criterion for the protection of human health from consumption of organisms only is 0.00059 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-11 (Oxn_CI-11_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135635, Chlordane	Region 4
Channel Islands Harbor

LOE ID:

267838

Pollutant:

Chlordane

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Total Chlordane. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The chlordane criterion for the protection of human health from consumption of organisms only is 0.00059 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-23 (Oxn_CI-23_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135635, Chlordane	Region 4
Channel Islands Harbor

LOE ID:

267569

Pollutant:

Chlordane

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Total Chlordane. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The chlordane criterion for the protection of human health from consumption of organisms only is 0.00059 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-02 (Oxn_CI-02_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-11-29

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135635, Chlordane	Region 4
Channel Islands Harbor

LOE ID:

267758

Pollutant:

Chlordane

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Total Chlordane. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The chlordane criterion for the protection of human health from consumption of organisms only is 0.00059 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-16 (Oxn_CI-16_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135635, Chlordane	Region 4
Channel Islands Harbor

LOE ID:

267486

Pollutant:

Chlordane

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Total Chlordane. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The chlordane criterion for the protection of human health from consumption of organisms only is 0.00059 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-09 (Oxn_CI-09_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135635, Chlordane	Region 4
Channel Islands Harbor

LOE ID:

267503

Pollutant:

Chlordane

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Total Chlordane. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The chlordane criterion for the protection of human health from consumption of organisms only is 0.00059 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-20 (Oxn_CI-20_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135635, Chlordane	Region 4
Channel Islands Harbor

LOE ID:

267504

Pollutant:

Chlordane

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Total Chlordane. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The chlordane criterion for the protection of human health from consumption of organisms only is 0.00059 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-14 (Oxn_CI-14_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135635, Chlordane	Region 4
Channel Islands Harbor

LOE ID:

267507

Pollutant:

Chlordane

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Total Chlordane. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The chlordane criterion for the protection of human health from consumption of organisms only is 0.00059 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-06 (Oxn_CI-06_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135635, Chlordane	Region 4
Channel Islands Harbor

LOE ID:

267606

Pollutant:

Chlordane

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Total Chlordane. Although a total of 4 samples were collected, 4 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The chlordane criterion for the protection of human health from consumption of organisms only is 0.00059 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-17 (Oxn_CI-17_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2019-12-04

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135635, Chlordane	Region 4
Channel Islands Harbor

LOE ID:

267608

Pollutant:

Chlordane

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Total Chlordane. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The chlordane criterion for the protection of human health from consumption of organisms only is 0.00059 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-26 (Oxn_CI-26_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135635, Chlordane	Region 4
Channel Islands Harbor

LOE ID:

267612

Pollutant:

Chlordane

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Total Chlordane. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The chlordane criterion for the protection of human health from consumption of organisms only is 0.00059 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-21 (Oxn_CI-21_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135635, Chlordane	Region 4
Channel Islands Harbor

LOE ID:

267613

Pollutant:

Chlordane

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Total Chlordane. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The chlordane criterion for the protection of human health from consumption of organisms only is 0.00059 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-25 (Oxn_CI-25_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135635, Chlordane	Region 4
Channel Islands Harbor

LOE ID:

267428

Pollutant:

Chlordane

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Total Chlordane. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The chlordane criterion for the protection of human health from consumption of organisms only is 0.00059 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-31 (Oxn_CI-31_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135635, Chlordane	Region 4
Channel Islands Harbor

LOE ID:

267429

Pollutant:

Chlordane

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Total Chlordane. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The chlordane criterion for the protection of human health from consumption of organisms only is 0.00059 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-07 (Oxn_CI-07_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135635, Chlordane	Region 4
Channel Islands Harbor

LOE ID:

267433

Pollutant:

Chlordane

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Total Chlordane. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The chlordane criterion for the protection of human health from consumption of organisms only is 0.00059 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-22 (Oxn_CI-22_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135635, Chlordane	Region 4
Channel Islands Harbor

LOE ID:

267632

Pollutant:

Chlordane

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Total Chlordane. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The chlordane criterion for the protection of human health from consumption of organisms only is 0.00059 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-19 (Oxn_CI-19_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135635, Chlordane	Region 4
Channel Islands Harbor

LOE ID:

267814

Pollutant:

Chlordane

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Total Chlordane. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The chlordane criterion for the protection of human health from consumption of organisms only is 0.00059 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-24 (Oxn_CI-24_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135635, Chlordane	Region 4
Channel Islands Harbor

LOE ID:

267341

Pollutant:

Chlordane

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Total Chlordane. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The chlordane criterion for the protection of human health from consumption of organisms only is 0.00059 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-10 (Oxn_CI-10_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135635, Chlordane	Region 4
Channel Islands Harbor

LOE ID:

267342

Pollutant:

Chlordane

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Total Chlordane. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The chlordane criterion for the protection of human health from consumption of organisms only is 0.00059 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-03 (Oxn_CI-03_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135635, Chlordane	Region 4
Channel Islands Harbor

LOE ID:

267343

Pollutant:

Chlordane

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Total Chlordane. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The chlordane criterion for the protection of human health from consumption of organisms only is 0.00059 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-08 (Oxn_CI-08_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135635, Chlordane	Region 4
Channel Islands Harbor

LOE ID:

267451

Pollutant:

Chlordane

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Total Chlordane. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The chlordane criterion for the protection of human health from consumption of organisms only is 0.00059 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-12 (Oxn_CI-12_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135635, Chlordane	Region 4
Channel Islands Harbor

LOE ID:

267547

Pollutant:

Chlordane

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Total Chlordane. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The chlordane criterion for the protection of human health from consumption of organisms only is 0.00059 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-27 (Oxn_CI-27_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135635, Chlordane	Region 4
Channel Islands Harbor

LOE ID:

267466

Pollutant:

Chlordane

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Total Chlordane. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The chlordane criterion for the protection of human health from consumption of organisms only is 0.00059 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-18 (Oxn_CI-18_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY


DECISION ID	135712	Region 4
Channel Islands Harbor

Pollutant:	Chloro-3-methylphenol, 4-
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.

Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.

Line of Evidence (LOE) for Decision ID 135712, Chloro-3-methylphenol, 4-	Region 4
Channel Islands Harbor

LOE ID:

258322

Pollutant:

Chloro-3-methylphenol, 4-

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The USEPA recommended criterion for 4-chloro-3-methylphenol to protect human health from the consumption of organisms only is 2000 ug/L.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-17 (Oxn_CI-17_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2019-12-04 and 2019-12-04

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY


DECISION ID	135636	Region 4
Channel Islands Harbor

Pollutant:	Chlorobenzene (mono)
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.

Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.

Line of Evidence (LOE) for Decision ID 135636, Chlorobenzene (mono)	Region 4
Channel Islands Harbor

LOE ID:

258323

Pollutant:

Chlorobenzene (mono)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The chlorobenzene criterion for the protection of human health from consumption of organisms only is 21,000 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-17 (Oxn_CI-17_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2019-12-04 and 2019-12-04

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY


DECISION ID	135637	Region 4
Channel Islands Harbor

Pollutant:	Chlorodibromomethane
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.

Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.

Line of Evidence (LOE) for Decision ID 135637, Chlorodibromomethane	Region 4
Channel Islands Harbor

LOE ID:

260095

Pollutant:

Chlorodibromomethane

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The chlorodibromomethane criterion for the protection of human health from consumption of organisms only is 34 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-17 (Oxn_CI-17_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2019-12-04 and 2019-12-04

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY


DECISION ID	135638	Region 4
Channel Islands Harbor

Pollutant:	Chloroform
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.

Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.

Line of Evidence (LOE) for Decision ID 135638, Chloroform	Region 4
Channel Islands Harbor

LOE ID:

258324

Pollutant:

Chloroform

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The USEPA recommended criterion for chloroform for protection of human health from the consumption of organisms only is 2,000 ug/l.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-17 (Oxn_CI-17_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2019-12-04 and 2019-12-04

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY


DECISION ID	135639	Region 4
Channel Islands Harbor

Pollutant:	Chlorpyrifos
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)(2018)
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.

Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.

Line of Evidence (LOE) for Decision ID 135639, Chlorpyrifos	Region 4
Channel Islands Harbor

LOE ID:

82788

Pollutant:

Chlorpyrifos

LOE Subgroup:

Pollutant-Tissue

Matrix:

Tissue

Fraction:

Shellfish

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

Shellfish surveys

Data Used to Assess Water Quality:

The sample did not exceed the guideline.

Data Reference:

RWB4 Miscellaneous Ventura Coastal 2006

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The modified OEHHA Fish Contaminant Goal for chlorpyrifos in shellfish tissue is 1,000 ppb. This screening level assumes an average body weight of 70 kg and a consumption rate of 21 g/day. (Brodberg, R.K., and G.A. Pollock, 1999; Klasing, S., and R. Brodberg, 2008; USEPA, 2000)

Guideline Reference:

Guidance for Assessing Chemical Contaminant Data for Use In Fish Advisories Volume 1: Fish Sampling and Analysis

Guideline Reference:

Prevalence of Selected Target Chemical Contaminants in Sport Fish From Two California Lakes: Public health designed screening study. Sacramento, CA: Office of Environmental Health Hazard Assessment

Guideline Reference:

Development of Fish Contaminant Goals and Advisory Tissue Levels for Common Contaminants in California Sport Fish: Chlordane, DDTs, Dieldrin, Methylmercury, PCBs, Selenium, and Toxaphene

Spatial Representation:

Data for was collected at one station: Channel Islands Harbor 5 - 410VHCHN5.

Temporal Representation:

Data was collected on a single day 2/28/2007.

Environmental Conditions:

QAPP Information:

Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002

QAPP Information Reference(s):

Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version)

Line of Evidence (LOE) for Decision ID 135639, Chlorpyrifos	Region 4
Channel Islands Harbor

LOE ID:

83648

Pollutant:

Chlorpyrifos

LOE Subgroup:

Pollutant-Tissue

Matrix:

Tissue

Fraction:

Fish fillet

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

Fish tissue analysis

Data Used to Assess Water Quality:

Data Reference:

RWB4 Miscellaneous Ventura Coastal 2006

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The modified OEHHA Fish Contaminant Goal for chlorpyrifos in fish tissue is 660 ppb. This screening level assumes an average body weight of 70 kg and a consumption rate of 32 g/day. A cooking reduction factor of 1 is applied for skin-off fillets. (Klasing, S., and R. Brodberg, 2008; USEPA, 2000)

Guideline Reference:

Development of Fish Contaminant Goals and Advisory Tissue Levels for Common Contaminants in California Sport Fish: Chlordane, DDTs, Dieldrin, Methylmercury, PCBs, Selenium, and Toxaphene

Guideline Reference:

Guidance for Assessing Chemical Contaminant Data for Use In Fish Advisories Volume 1: Fish Sampling and Analysis

Spatial Representation:

Samples are collected by hand from three sub-locations (A,B,C) from site 410VHCHN5. The three samples per site were averaged prior to assessment.

Temporal Representation:

Representative samples of locally abundant species were collected on February 28, 2007.

Environmental Conditions:

QAPP Information:

Samples were collected as part of the State Water Board's Surface Water Ambient Monitoring Program.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 135639, Chlorpyrifos	Region 4
Channel Islands Harbor

LOE ID:

83647

Pollutant:

Chlorpyrifos

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

State Water Board staff assessed 4 data for Channel Islands Harbor to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for Chlorpyrifos.

Data Reference:

RWB4 Miscellaneous Ventura Coastal 2006

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The saltwater criterion continuous concentration to protect aquatic organisms is 0.009 ug/L (Siepmann and Finlayson 2000).

Guideline Reference:

Data submissions and corrections for the 2004 303(d) list for Chumas Creek for dissolved oxygen. San Luis Obispo, CA: Central Coast RWQCB

Spatial Representation:

Data for this line of evidence for Channel Islands Harbor was collected at 1 monitoring site [ Channel Islands Harbor 5 - 410VHCHN5]

Temporal Representation:

Data was collected on a single day 10/12/2006.

Environmental Conditions:

Staff is not aware of any special conditions that might affect interpretation of the data.

QAPP Information:

The SWAMP QAPP (2008) was followed.

QAPP Information Reference(s):

Surface Water Ambient Monitoring Program Quality Assurance Program Plan

Line of Evidence (LOE) for Decision ID 135639, Chlorpyrifos	Region 4
Channel Islands Harbor

LOE ID:

258365

Pollutant:

Chlorpyrifos

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Chlorpyrifos. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The saltwater criterion continuous concentration to protect aquatic organisms is 0.009 ug/L (Siepmann and Finlayson 2000).

Guideline Reference:

Water quality criteria for diazinon and chlorpyrifos. Administrative Report 00-3. Rancho Cordova, CA: Pesticide Investigations Unit, Office of Spills and Response. CA Department of Fish and Game

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-20 (Oxn_CI-20_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135639, Chlorpyrifos	Region 4
Channel Islands Harbor

LOE ID:

258502

Pollutant:

Chlorpyrifos

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Chlorpyrifos. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The saltwater criterion continuous concentration to protect aquatic organisms is 0.009 ug/L (Siepmann and Finlayson 2000).

Guideline Reference:

Water quality criteria for diazinon and chlorpyrifos. Administrative Report 00-3. Rancho Cordova, CA: Pesticide Investigations Unit, Office of Spills and Response. CA Department of Fish and Game

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-23 (Oxn_CI-23_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135639, Chlorpyrifos	Region 4
Channel Islands Harbor

LOE ID:

258500

Pollutant:

Chlorpyrifos

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Chlorpyrifos. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The saltwater criterion continuous concentration to protect aquatic organisms is 0.009 ug/L (Siepmann and Finlayson 2000).

Guideline Reference:

Water quality criteria for diazinon and chlorpyrifos. Administrative Report 00-3. Rancho Cordova, CA: Pesticide Investigations Unit, Office of Spills and Response. CA Department of Fish and Game

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-17 (Oxn_CI-17_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-11-29

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135639, Chlorpyrifos	Region 4
Channel Islands Harbor

LOE ID:

258499

Pollutant:

Chlorpyrifos

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Chlorpyrifos. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The saltwater criterion continuous concentration to protect aquatic organisms is 0.009 ug/L (Siepmann and Finlayson 2000).

Guideline Reference:

Water quality criteria for diazinon and chlorpyrifos. Administrative Report 00-3. Rancho Cordova, CA: Pesticide Investigations Unit, Office of Spills and Response. CA Department of Fish and Game

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-18 (Oxn_CI-18_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135639, Chlorpyrifos	Region 4
Channel Islands Harbor

LOE ID:

258497

Pollutant:

Chlorpyrifos

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Chlorpyrifos. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The saltwater criterion continuous concentration to protect aquatic organisms is 0.009 ug/L (Siepmann and Finlayson 2000).

Guideline Reference:

Water quality criteria for diazinon and chlorpyrifos. Administrative Report 00-3. Rancho Cordova, CA: Pesticide Investigations Unit, Office of Spills and Response. CA Department of Fish and Game

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-27 (Oxn_CI-27_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135639, Chlorpyrifos	Region 4
Channel Islands Harbor

LOE ID:

258482

Pollutant:

Chlorpyrifos

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Chlorpyrifos. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The saltwater criterion continuous concentration to protect aquatic organisms is 0.009 ug/L (Siepmann and Finlayson 2000).

Guideline Reference:

Water quality criteria for diazinon and chlorpyrifos. Administrative Report 00-3. Rancho Cordova, CA: Pesticide Investigations Unit, Office of Spills and Response. CA Department of Fish and Game

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-26 (Oxn_CI-26_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135639, Chlorpyrifos	Region 4
Channel Islands Harbor

LOE ID:

258236

Pollutant:

Chlorpyrifos

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Chlorpyrifos. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The saltwater criterion continuous concentration to protect aquatic organisms is 0.009 ug/L (Siepmann and Finlayson 2000).

Guideline Reference:

Water quality criteria for diazinon and chlorpyrifos. Administrative Report 00-3. Rancho Cordova, CA: Pesticide Investigations Unit, Office of Spills and Response. CA Department of Fish and Game

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-13 (Oxn_CI-13_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135639, Chlorpyrifos	Region 4
Channel Islands Harbor

LOE ID:

258422

Pollutant:

Chlorpyrifos

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Chlorpyrifos. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The saltwater criterion continuous concentration to protect aquatic organisms is 0.009 ug/L (Siepmann and Finlayson 2000).

Guideline Reference:

Water quality criteria for diazinon and chlorpyrifos. Administrative Report 00-3. Rancho Cordova, CA: Pesticide Investigations Unit, Office of Spills and Response. CA Department of Fish and Game

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-06 (Oxn_CI-06_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135639, Chlorpyrifos	Region 4
Channel Islands Harbor

LOE ID:

258515

Pollutant:

Chlorpyrifos

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Chlorpyrifos. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The saltwater criterion continuous concentration to protect aquatic organisms is 0.009 ug/L (Siepmann and Finlayson 2000).

Guideline Reference:

Water quality criteria for diazinon and chlorpyrifos. Administrative Report 00-3. Rancho Cordova, CA: Pesticide Investigations Unit, Office of Spills and Response. CA Department of Fish and Game

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-02 (Oxn_CI-02_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-11-29

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135639, Chlorpyrifos	Region 4
Channel Islands Harbor

LOE ID:

258247

Pollutant:

Chlorpyrifos

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Chlorpyrifos. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The saltwater criterion continuous concentration to protect aquatic organisms is 0.009 ug/L (Siepmann and Finlayson 2000).

Guideline Reference:

Water quality criteria for diazinon and chlorpyrifos. Administrative Report 00-3. Rancho Cordova, CA: Pesticide Investigations Unit, Office of Spills and Response. CA Department of Fish and Game

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-10 (Oxn_CI-10_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135639, Chlorpyrifos	Region 4
Channel Islands Harbor

LOE ID:

258252

Pollutant:

Chlorpyrifos

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Chlorpyrifos. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The saltwater criterion continuous concentration to protect aquatic organisms is 0.009 ug/L (Siepmann and Finlayson 2000).

Guideline Reference:

Water quality criteria for diazinon and chlorpyrifos. Administrative Report 00-3. Rancho Cordova, CA: Pesticide Investigations Unit, Office of Spills and Response. CA Department of Fish and Game

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-14 (Oxn_CI-14_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135639, Chlorpyrifos	Region 4
Channel Islands Harbor

LOE ID:

258253

Pollutant:

Chlorpyrifos

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Chlorpyrifos. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The saltwater criterion continuous concentration to protect aquatic organisms is 0.009 ug/L (Siepmann and Finlayson 2000).

Guideline Reference:

Water quality criteria for diazinon and chlorpyrifos. Administrative Report 00-3. Rancho Cordova, CA: Pesticide Investigations Unit, Office of Spills and Response. CA Department of Fish and Game

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-08 (Oxn_CI-08_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135639, Chlorpyrifos	Region 4
Channel Islands Harbor

LOE ID:

258442

Pollutant:

Chlorpyrifos

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Chlorpyrifos. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The saltwater criterion continuous concentration to protect aquatic organisms is 0.009 ug/L (Siepmann and Finlayson 2000).

Guideline Reference:

Water quality criteria for diazinon and chlorpyrifos. Administrative Report 00-3. Rancho Cordova, CA: Pesticide Investigations Unit, Office of Spills and Response. CA Department of Fish and Game

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-25 (Oxn_CI-25_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135639, Chlorpyrifos	Region 4
Channel Islands Harbor

LOE ID:

258443

Pollutant:

Chlorpyrifos

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Chlorpyrifos. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The saltwater criterion continuous concentration to protect aquatic organisms is 0.009 ug/L (Siepmann and Finlayson 2000).

Guideline Reference:

Water quality criteria for diazinon and chlorpyrifos. Administrative Report 00-3. Rancho Cordova, CA: Pesticide Investigations Unit, Office of Spills and Response. CA Department of Fish and Game

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-07 (Oxn_CI-07_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135639, Chlorpyrifos	Region 4
Channel Islands Harbor

LOE ID:

258444

Pollutant:

Chlorpyrifos

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Chlorpyrifos. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The saltwater criterion continuous concentration to protect aquatic organisms is 0.009 ug/L (Siepmann and Finlayson 2000).

Guideline Reference:

Water quality criteria for diazinon and chlorpyrifos. Administrative Report 00-3. Rancho Cordova, CA: Pesticide Investigations Unit, Office of Spills and Response. CA Department of Fish and Game

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-11 (Oxn_CI-11_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135639, Chlorpyrifos	Region 4
Channel Islands Harbor

LOE ID:

258231

Pollutant:

Chlorpyrifos

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Chlorpyrifos. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The saltwater criterion continuous concentration to protect aquatic organisms is 0.009 ug/L (Siepmann and Finlayson 2000).

Guideline Reference:

Water quality criteria for diazinon and chlorpyrifos. Administrative Report 00-3. Rancho Cordova, CA: Pesticide Investigations Unit, Office of Spills and Response. CA Department of Fish and Game

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-22 (Oxn_CI-22_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135639, Chlorpyrifos	Region 4
Channel Islands Harbor

LOE ID:

258456

Pollutant:

Chlorpyrifos

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Chlorpyrifos. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The saltwater criterion continuous concentration to protect aquatic organisms is 0.009 ug/L (Siepmann and Finlayson 2000).

Guideline Reference:

Water quality criteria for diazinon and chlorpyrifos. Administrative Report 00-3. Rancho Cordova, CA: Pesticide Investigations Unit, Office of Spills and Response. CA Department of Fish and Game

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-12 (Oxn_CI-12_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135639, Chlorpyrifos	Region 4
Channel Islands Harbor

LOE ID:

258287

Pollutant:

Chlorpyrifos

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Chlorpyrifos. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The saltwater criterion continuous concentration to protect aquatic organisms is 0.009 ug/L (Siepmann and Finlayson 2000).

Guideline Reference:

Water quality criteria for diazinon and chlorpyrifos. Administrative Report 00-3. Rancho Cordova, CA: Pesticide Investigations Unit, Office of Spills and Response. CA Department of Fish and Game

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-31 (Oxn_CI-31_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135639, Chlorpyrifos	Region 4
Channel Islands Harbor

LOE ID:

258290

Pollutant:

Chlorpyrifos

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Chlorpyrifos. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The saltwater criterion continuous concentration to protect aquatic organisms is 0.009 ug/L (Siepmann and Finlayson 2000).

Guideline Reference:

Water quality criteria for diazinon and chlorpyrifos. Administrative Report 00-3. Rancho Cordova, CA: Pesticide Investigations Unit, Office of Spills and Response. CA Department of Fish and Game

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-24 (Oxn_CI-24_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135639, Chlorpyrifos	Region 4
Channel Islands Harbor

LOE ID:

258291

Pollutant:

Chlorpyrifos

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Chlorpyrifos. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The saltwater criterion continuous concentration to protect aquatic organisms is 0.009 ug/L (Siepmann and Finlayson 2000).

Guideline Reference:

Water quality criteria for diazinon and chlorpyrifos. Administrative Report 00-3. Rancho Cordova, CA: Pesticide Investigations Unit, Office of Spills and Response. CA Department of Fish and Game

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-09 (Oxn_CI-09_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135639, Chlorpyrifos	Region 4
Channel Islands Harbor

LOE ID:

258385

Pollutant:

Chlorpyrifos

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Chlorpyrifos. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The saltwater criterion continuous concentration to protect aquatic organisms is 0.009 ug/L (Siepmann and Finlayson 2000).

Guideline Reference:

Water quality criteria for diazinon and chlorpyrifos. Administrative Report 00-3. Rancho Cordova, CA: Pesticide Investigations Unit, Office of Spills and Response. CA Department of Fish and Game

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-16 (Oxn_CI-16_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135639, Chlorpyrifos	Region 4
Channel Islands Harbor

LOE ID:

258386

Pollutant:

Chlorpyrifos

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Chlorpyrifos. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The saltwater criterion continuous concentration to protect aquatic organisms is 0.009 ug/L (Siepmann and Finlayson 2000).

Guideline Reference:

Water quality criteria for diazinon and chlorpyrifos. Administrative Report 00-3. Rancho Cordova, CA: Pesticide Investigations Unit, Office of Spills and Response. CA Department of Fish and Game

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-19 (Oxn_CI-19_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135639, Chlorpyrifos	Region 4
Channel Islands Harbor

LOE ID:

258475

Pollutant:

Chlorpyrifos

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Chlorpyrifos. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The saltwater criterion continuous concentration to protect aquatic organisms is 0.009 ug/L (Siepmann and Finlayson 2000).

Guideline Reference:

Water quality criteria for diazinon and chlorpyrifos. Administrative Report 00-3. Rancho Cordova, CA: Pesticide Investigations Unit, Office of Spills and Response. CA Department of Fish and Game

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-21 (Oxn_CI-21_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135639, Chlorpyrifos	Region 4
Channel Islands Harbor

LOE ID:

258481

Pollutant:

Chlorpyrifos

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Chlorpyrifos. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The saltwater criterion continuous concentration to protect aquatic organisms is 0.009 ug/L (Siepmann and Finlayson 2000).

Guideline Reference:

Water quality criteria for diazinon and chlorpyrifos. Administrative Report 00-3. Rancho Cordova, CA: Pesticide Investigations Unit, Office of Spills and Response. CA Department of Fish and Game

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-03 (Oxn_CI-03_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135639, Chlorpyrifos	Region 4
Channel Islands Harbor

LOE ID:

258294

Pollutant:

Chlorpyrifos

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Chlorpyrifos. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The saltwater criterion continuous concentration to protect aquatic organisms is 0.009 ug/L (Siepmann and Finlayson 2000).

Guideline Reference:

Water quality criteria for diazinon and chlorpyrifos. Administrative Report 00-3. Rancho Cordova, CA: Pesticide Investigations Unit, Office of Spills and Response. CA Department of Fish and Game

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-15 (Oxn_CI-15_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY


DECISION ID	135724	Region 4
Channel Islands Harbor

Pollutant:	Chromium
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)(2018)
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.

Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.

Line of Evidence (LOE) for Decision ID 135724, Chromium	Region 4
Channel Islands Harbor

LOE ID:

246911

Pollutant:

Chromium

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The evaluation guideline for chromium is the effects range median (ERM) value of 370 PPM ug/g dry weight (Long et al., 1995)

Guideline Reference:

Incidence of adverse biological effects within ranges of chemical concentrations in marine and estuary sediments. Environmental Management. 19, (1): 81-97

Spatial Representation:

Data were collected from 1 station(s). Station Code(s): B18-10046 (B18-10046).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-08-18 to 2018-08-18

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 135724, Chromium	Region 4
Channel Islands Harbor

LOE ID:

246981

Pollutant:

Chromium

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The evaluation guideline for chromium is the effects range median (ERM) value of 370 PPM ug/g dry weight (Long et al., 1995)

Guideline Reference:

Incidence of adverse biological effects within ranges of chemical concentrations in marine and estuary sediments. Environmental Management. 19, (1): 81-97

Spatial Representation:

Data were collected from 1 station(s). Station Code(s): 410CHN002 (Channel Islands Harbor CI2).

Temporal Representation:

Data for this waterbody were collected over the date range 2017-05-24 to 2017-05-24

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 135724, Chromium	Region 4
Channel Islands Harbor

LOE ID:

246996

Pollutant:

Chromium

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The evaluation guideline for chromium is the effects range median (ERM) value of 370 PPM ug/g dry weight (Long et al., 1995)

Guideline Reference:

Incidence of adverse biological effects within ranges of chemical concentrations in marine and estuary sediments. Environmental Management. 19, (1): 81-97

Spatial Representation:

Data were collected from 1 station(s). Station Code(s): 410CHN004 (Channel Islands Harbor CI4).

Temporal Representation:

Data for this waterbody were collected over the date range 2017-05-24 to 2017-05-24

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 135724, Chromium	Region 4
Channel Islands Harbor

LOE ID:

246770

Pollutant:

Chromium

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The evaluation guideline for chromium is the effects range median (ERM) value of 370 PPM ug/g dry weight (Long et al., 1995)

Guideline Reference:

Incidence of adverse biological effects within ranges of chemical concentrations in marine and estuary sediments. Environmental Management. 19, (1): 81-97

Spatial Representation:

Data were collected from 1 station(s). Station Code(s): 410CHN005 (Channel Islands Harbor CI5).

Temporal Representation:

Data for this waterbody were collected over the date range 2017-05-24 to 2017-05-24

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 135724, Chromium	Region 4
Channel Islands Harbor

LOE ID:

247103

Pollutant:

Chromium

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The evaluation guideline for chromium is the effects range median (ERM) value of 370 PPM ug/g dry weight (Long et al., 1995)

Guideline Reference:

Incidence of adverse biological effects within ranges of chemical concentrations in marine and estuary sediments. Environmental Management. 19, (1): 81-97

Spatial Representation:

Data were collected from 1 station(s). Station Code(s): 410CHN001 (Channel Islands Harbor CI1).

Temporal Representation:

Data for this waterbody were collected over the date range 2017-05-24 to 2017-05-24

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 135724, Chromium	Region 4
Channel Islands Harbor

LOE ID:

246837

Pollutant:

Chromium

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The evaluation guideline for chromium is the effects range median (ERM) value of 370 PPM ug/g dry weight (Long et al., 1995)

Guideline Reference:

Incidence of adverse biological effects within ranges of chemical concentrations in marine and estuary sediments. Environmental Management. 19, (1): 81-97

Spatial Representation:

Data were collected from 1 station(s). Station Code(s): 410CHN003 (Channel Islands Harbor CI3).

Temporal Representation:

Data for this waterbody were collected over the date range 2017-05-24 to 2017-05-24

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 135724, Chromium	Region 4
Channel Islands Harbor

LOE ID:

83649

Pollutant:

Chromium

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Boardstaff assessed SWAMP data for Channel Islands Harbor to determine beneficial use support and results are as follows: 0 of 5 samples exceed the criterion for Chromium.

Data Reference:

RWB4 Miscellaneous Ventura Coastal 2006

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

In marine and estuarine sediments the effects range median (predictive of sediment toxicity for sediment-dwelling organisms) for Chromium is 370 ug/g dry weight (Long et al., 1995).

Guideline Reference:

Incidence of adverse biological effects within ranges of chemical concentrations in marine and estuary sediments. Environmental Management. 19, (1): 81-97

Spatial Representation:

Temporal Representation:

Data was collected over the time period 10/11/2006-10/12/2006.

Environmental Conditions:

Staff is not aware of any special conditions that might affect interpretation of the data.

QAPP Information:

2002 QAMP (Quality Assurance Management Plan) for the State of California's Surface Water Ambient Monitoring Program

QAPP Information Reference(s):

Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version)


DECISION ID	135640	Region 4
Channel Islands Harbor

Pollutant:	Chrysene (C1-C4)
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)(2018)
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.

Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.

Line of Evidence (LOE) for Decision ID 135640, Chrysene (C1-C4)	Region 4
Channel Islands Harbor

LOE ID:

247302

Pollutant:

Chrysene (C1-C4)

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The evaluation guideline for chrysene is the probable effect level (PEL) of 846 ng/g dry weight (MacDonald et al., 1996).

Guideline Reference:

Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278

Spatial Representation:

Data were collected from 1 station(s). Station Code(s): 410CHN004 (Channel Islands Harbor CI4).

Temporal Representation:

Data for this waterbody were collected over the date range 2017-05-24 to 2017-05-24

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 135640, Chrysene (C1-C4)	Region 4
Channel Islands Harbor

LOE ID:

247376

Pollutant:

Chrysene (C1-C4)

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The evaluation guideline for chrysene is the probable effect level (PEL) of 846 ng/g dry weight (MacDonald et al., 1996).

Guideline Reference:

Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278

Spatial Representation:

Data were collected from 1 station(s). Station Code(s): 410CHN003 (Channel Islands Harbor CI3).

Temporal Representation:

Data for this waterbody were collected over the date range 2017-05-24 to 2017-05-24

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 135640, Chrysene (C1-C4)	Region 4
Channel Islands Harbor

LOE ID:

247258

Pollutant:

Chrysene (C1-C4)

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The evaluation guideline for chrysene is the probable effect level (PEL) of 846 ng/g dry weight (MacDonald et al., 1996).

Guideline Reference:

Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278

Spatial Representation:

Data were collected from 1 station(s). Station Code(s): 410CHN001 (Channel Islands Harbor CI1).

Temporal Representation:

Data for this waterbody were collected over the date range 2017-05-24 to 2017-05-24

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 135640, Chrysene (C1-C4)	Region 4
Channel Islands Harbor

LOE ID:

247019

Pollutant:

Chrysene (C1-C4)

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The evaluation guideline for chrysene is the probable effect level (PEL) of 846 ng/g dry weight (MacDonald et al., 1996).

Guideline Reference:

Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278

Spatial Representation:

Data were collected from 1 station(s). Station Code(s): 410CHN005 (Channel Islands Harbor CI5).

Temporal Representation:

Data for this waterbody were collected over the date range 2017-05-24 to 2017-05-24

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 135640, Chrysene (C1-C4)	Region 4
Channel Islands Harbor

LOE ID:

247228

Pollutant:

Chrysene (C1-C4)

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The evaluation guideline for chrysene is the probable effect level (PEL) of 846 ng/g dry weight (MacDonald et al., 1996).

Guideline Reference:

Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278

Spatial Representation:

Data were collected from 1 station(s). Station Code(s): 410CHN002 (Channel Islands Harbor CI2).

Temporal Representation:

Data for this waterbody were collected over the date range 2017-05-24 to 2017-05-24

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 135640, Chrysene (C1-C4)	Region 4
Channel Islands Harbor

LOE ID:

258819

Pollutant:

Chrysene (C1-C4)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Chrysene. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The chrysene criterion for the protection of human health from consumption of organisms only is 0.049 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-17 (Oxn_CI-17_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2019-12-04 to 2019-12-04

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135640, Chrysene (C1-C4)	Region 4
Channel Islands Harbor

LOE ID:

83650

Pollutant:

Chrysene (C1-C4)

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Boardstaff assessed SWAMP data for Channel Islands Harbor to determine beneficial use support and results are as follows: 0 of 5 samples exceed the criterion for Chrysene.

Data Reference:

RWB4 Miscellaneous Ventura Coastal 2006

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

In marine and estuarine sediments the probable effect level (predictive of sediment toxicity for sediment-dwelling organisms) for Chrysene is 845 ng/g dry weight (MacDonald et al., 1996).

Guideline Reference:

Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278

Spatial Representation:

Temporal Representation:

Data was collected over the time period 10/11/2006-10/12/2006.

Environmental Conditions:

Staff is not aware of any special conditions that might affect interpretation of the data.

QAPP Information:

2002 QAMP (Quality Assurance Management Plan) for the State of California's Surface Water Ambient Monitoring Program

QAPP Information Reference(s):

Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version)

Line of Evidence (LOE) for Decision ID 135640, Chrysene (C1-C4)	Region 4
Channel Islands Harbor

LOE ID:

83651

Pollutant:

Chrysene (C1-C4)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

State Water Board staff assessed 4 data for Channel Islands Harbor to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Chrysene.

Data Reference:

RWB4 Miscellaneous Ventura Coastal 2006

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

The Chrysene criteria for the protection of human health from consumption of organisms only is 0.049 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Data for this line of evidence for Channel Islands Harbor was collected at 1 monitoring site [ Channel Islands Harbor 5 - 410VHCHN5]

Temporal Representation:

Data was collected on a single day 10/12/2006.

Environmental Conditions:

Staff is not aware of any special conditions that might affect interpretation of the data.

QAPP Information:

The SWAMP QAPP (2008) was followed.

QAPP Information Reference(s):

Surface Water Ambient Monitoring Program Quality Assurance Program Plan


DECISION ID	135641	Region 4
Channel Islands Harbor

Pollutant:	Copper
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)(2018)
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	This pollutant is being considered for placement on the CWA section 303(d) List under sections 3.1 and 3.6 of the Listing Policy. Under Section 3.1, at least one line of evidence is necessary. Under Section 3.6, at least two lines of evidence are necessary to assess listing status for pollutants sediment, and pollutant concentrations in sediment must be associated with sediment toxicity to justify adding that pollutant to the CWA section 303(d) List. 38 lines of evidence are available in the administrative record to assess this pollutant. Many of the submitted data were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5. 3 of 5 samples exceeded the criterion for copper in the water column. 1 of 11 samples exceeded the guideline for copper in sediment. Based on the readily available data and information, the weight of evidence indicates that there is insufficient justification for placing this water segment-pollutant combination on the CWA section 303(d) List. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. Although 3 of 5 samples exceeded the criterion for copper in water and this the allowable frequency listed in Table 3.1 of the Listing Policy, these samples were all collected on the same day. Section 6.1.5.3 of the Listing Policy states “If the majority of samples were collected on a single day... the data shall not be used as the primary data set supporting the listing decision.” 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.

Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.

Line of Evidence (LOE) for Decision ID 135641, Copper	Region 4
Channel Islands Harbor

LOE ID:

259162

Pollutant:

Copper

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Copper. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved copper criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 3.1 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-13 (Oxn_CI-13_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135641, Copper	Region 4
Channel Islands Harbor

LOE ID:

259035

Pollutant:

Copper

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed SWAMP RWB4 Monitoring data for Channel Islands Harbor to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Copper.

Data Reference:

Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

The dissolved copper criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 3.1 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: 410CHN005 (Channel Islands Harbor CI5).

Temporal Representation:

The samples were collected between the dates of 2017-05-24 and 2017-05-24

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 135641, Copper	Region 4
Channel Islands Harbor

LOE ID:

247722

Pollutant:

Copper

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The evaluation guideline for copper is the effects range median (ERM) value of 270 PPM (ug/g) dry weight (Long et al., 1995).

Guideline Reference:

Incidence of adverse biological effects within ranges of chemical concentrations in marine and estuary sediments. Environmental Management. 19, (1): 81-97

Spatial Representation:

Data were collected from 1 station(s). Station Code(s): B18-10046 (B18-10046).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-08-18 to 2018-08-18

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 135641, Copper	Region 4
Channel Islands Harbor

LOE ID:

247597

Pollutant:

Copper

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The evaluation guideline for copper is the effects range median (ERM) value of 270 PPM (ug/g) dry weight (Long et al., 1995).

Guideline Reference:

Incidence of adverse biological effects within ranges of chemical concentrations in marine and estuary sediments. Environmental Management. 19, (1): 81-97

Spatial Representation:

Data were collected from 1 station(s). Station Code(s): 410CHN004 (Channel Islands Harbor CI4).

Temporal Representation:

Data for this waterbody were collected over the date range 2017-05-24 to 2017-05-24

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 135641, Copper	Region 4
Channel Islands Harbor

LOE ID:

83652

Pollutant:

Copper

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Boardstaff assessed SWAMP data for Channel Islands Harbor to determine beneficial use support and results are as follows: 0 of 5 samples exceed the criterion for Copper.

Data Reference:

RWB4 Miscellaneous Ventura Coastal 2006

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

In marine and estuarine sediments the effects range median (predictive of sediment toxicity for sediment-dwelling organisms) for Copper is 270 ug/g dry weight (Long et al., 1995).

Guideline Reference:

Incidence of adverse biological effects within ranges of chemical concentrations in marine and estuary sediments. Environmental Management. 19, (1): 81-97

Spatial Representation:

Temporal Representation:

Data was collected over the time period 10/11/2006-10/12/2006.

Environmental Conditions:

Staff is not aware of any special conditions that might affect interpretation of the data.

QAPP Information:

2002 QAMP (Quality Assurance Management Plan) for the State of California's Surface Water Ambient Monitoring Program

QAPP Information Reference(s):

Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version)

Line of Evidence (LOE) for Decision ID 135641, Copper	Region 4
Channel Islands Harbor

LOE ID:

258922

Pollutant:

Copper

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Copper. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved copper criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 3.1 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-06 (Oxn_CI-06_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-09 to 2018-10-09

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135641, Copper	Region 4
Channel Islands Harbor

LOE ID:

247528

Pollutant:

Copper

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The evaluation guideline for copper is the effects range median (ERM) value of 270 PPM (ug/g) dry weight (Long et al., 1995).

Guideline Reference:

Incidence of adverse biological effects within ranges of chemical concentrations in marine and estuary sediments. Environmental Management. 19, (1): 81-97

Spatial Representation:

Data were collected from 1 station(s). Station Code(s): 410CHN001 (Channel Islands Harbor CI1).

Temporal Representation:

Data for this waterbody were collected over the date range 2017-05-24 to 2017-05-24

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 135641, Copper	Region 4
Channel Islands Harbor

LOE ID:

259036

Pollutant:

Copper

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Copper. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved copper criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 3.1 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-10 (Oxn_CI-10_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135641, Copper	Region 4
Channel Islands Harbor

LOE ID:

259148

Pollutant:

Copper

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

The dissolved copper criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 3.1 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: 410CHN001 (Channel Islands Harbor CI1).

Temporal Representation:

The samples were collected between the dates of 2017-05-24 and 2017-05-24

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 135641, Copper	Region 4
Channel Islands Harbor

LOE ID:

259157

Pollutant:

Copper

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Copper. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved copper criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 3.1 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-23 (Oxn_CI-23_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135641, Copper	Region 4
Channel Islands Harbor

LOE ID:

259159

Pollutant:

Copper

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Copper. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved copper criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 3.1 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-25 (Oxn_CI-25_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135641, Copper	Region 4
Channel Islands Harbor

LOE ID:

258947

Pollutant:

Copper

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Copper. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved copper criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 3.1 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-09 (Oxn_CI-09_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135641, Copper	Region 4
Channel Islands Harbor

LOE ID:

258948

Pollutant:

Copper

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Copper. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved copper criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 3.1 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-19 (Oxn_CI-19_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135641, Copper	Region 4
Channel Islands Harbor

LOE ID:

83620

Pollutant:

Toxicity

LOE Subgroup:

Toxicity

Matrix:

Sediment

Fraction:

None

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

TOXICITY TESTING

Data Used to Assess Water Quality:

Data Reference:

RWB4 Miscellaneous Ventura Coastal 2006

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Revised approach to toxicity test acceptability criteria using a statistical performance assessment. Environmental Toxicology and Chemistry, vol. 16, No. 6, pp 1322¿1329

Spatial Representation:

The samples were collected at stations 410VHCHN1, 410VHCHN2, 410VHCHN3, 410VHCHN4, and 410VHCHN5.

Temporal Representation:

The samples were collected in October 2006.

Environmental Conditions:

QAPP Information:

Data quality is good. Data results were recorded in the SWAMP database and follwed SWAMP protocols.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 135641, Copper	Region 4
Channel Islands Harbor

LOE ID:

258954

Pollutant:

Copper

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Copper. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved copper criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 3.1 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-26 (Oxn_CI-26_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135641, Copper	Region 4
Channel Islands Harbor

LOE ID:

259064

Pollutant:

Copper

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Copper. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved copper criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 3.1 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-11 (Oxn_CI-11_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135641, Copper	Region 4
Channel Islands Harbor

LOE ID:

259066

Pollutant:

Copper

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Copper. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved copper criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 3.1 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-18 (Oxn_CI-18_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135641, Copper	Region 4
Channel Islands Harbor

LOE ID:

259174

Pollutant:

Copper

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed SWAMP RWB4 Monitoring data for Channel Islands Harbor to determine beneficial use support and results are as follows: 1 of 1 samples exceeded the water quality threshold for Copper.

Data Reference:

Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

The dissolved copper criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 3.1 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: 410CHN002 (Channel Islands Harbor CI2).

Temporal Representation:

The samples were collected between the dates of 2017-05-24 and 2017-05-24

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 135641, Copper	Region 4
Channel Islands Harbor

LOE ID:

258854

Pollutant:

Copper

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Copper. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved copper criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 3.1 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-21 (Oxn_CI-21_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135641, Copper	Region 4
Channel Islands Harbor

LOE ID:

258966

Pollutant:

Copper

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Copper. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved copper criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 3.1 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-07 (Oxn_CI-07_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135641, Copper	Region 4
Channel Islands Harbor

LOE ID:

258858

Pollutant:

Copper

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Copper. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved copper criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 3.1 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-17 (Oxn_CI-17_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135641, Copper	Region 4
Channel Islands Harbor

LOE ID:

258872

Pollutant:

Copper

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Copper. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved copper criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 3.1 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-08 (Oxn_CI-08_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135641, Copper	Region 4
Channel Islands Harbor

LOE ID:

259197

Pollutant:

Copper

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

The dissolved copper criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 3.1 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: 410CHN004 (Channel Islands Harbor CI4).

Temporal Representation:

The samples were collected between the dates of 2017-05-24 and 2017-05-24

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 135641, Copper	Region 4
Channel Islands Harbor

LOE ID:

258994

Pollutant:

Copper

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Copper. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved copper criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 3.1 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-20 (Oxn_CI-20_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135641, Copper	Region 4
Channel Islands Harbor

LOE ID:

259000

Pollutant:

Copper

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Copper. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved copper criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 3.1 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-31 (Oxn_CI-31_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135641, Copper	Region 4
Channel Islands Harbor

LOE ID:

259218

Pollutant:

Copper

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

The dissolved copper criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 3.1 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: 410CHN003 (Channel Islands Harbor CI3).

Temporal Representation:

The samples were collected between the dates of 2017-05-24 and 2017-05-24

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 135641, Copper	Region 4
Channel Islands Harbor

LOE ID:

259002

Pollutant:

Copper

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Copper. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved copper criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 3.1 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-15 (Oxn_CI-15_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135641, Copper	Region 4
Channel Islands Harbor

LOE ID:

259114

Pollutant:

Copper

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Copper. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved copper criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 3.1 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-02 (Oxn_CI-02_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135641, Copper	Region 4
Channel Islands Harbor

LOE ID:

259221

Pollutant:

Copper

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Copper. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved copper criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 3.1 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-03 (Oxn_CI-03_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135641, Copper	Region 4
Channel Islands Harbor

LOE ID:

259012

Pollutant:

Copper

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Copper. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved copper criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 3.1 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-12 (Oxn_CI-12_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135641, Copper	Region 4
Channel Islands Harbor

LOE ID:

259013

Pollutant:

Copper

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Copper. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved copper criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 3.1 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-22 (Oxn_CI-22_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135641, Copper	Region 4
Channel Islands Harbor

LOE ID:

258908

Pollutant:

Copper

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Copper. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved copper criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 3.1 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-27 (Oxn_CI-27_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135641, Copper	Region 4
Channel Islands Harbor

LOE ID:

259129

Pollutant:

Copper

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Copper. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved copper criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 3.1 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-14 (Oxn_CI-14_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135641, Copper	Region 4
Channel Islands Harbor

LOE ID:

259133

Pollutant:

Copper

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Copper. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved copper criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 3.1 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-24 (Oxn_CI-24_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135641, Copper	Region 4
Channel Islands Harbor

LOE ID:

259134

Pollutant:

Copper

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Copper. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved copper criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 3.1 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-16 (Oxn_CI-16_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135641, Copper	Region 4
Channel Islands Harbor

LOE ID:

247744

Pollutant:

Copper

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The evaluation guideline for copper is the effects range median (ERM) value of 270 PPM (ug/g) dry weight (Long et al., 1995).

Guideline Reference:

Incidence of adverse biological effects within ranges of chemical concentrations in marine and estuary sediments. Environmental Management. 19, (1): 81-97

Spatial Representation:

Data were collected from 1 station(s). Station Code(s): 410CHN005 (Channel Islands Harbor CI5).

Temporal Representation:

Data for this waterbody were collected over the date range 2017-05-24 to 2017-05-24

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 135641, Copper	Region 4
Channel Islands Harbor

LOE ID:

247658

Pollutant:

Copper

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The evaluation guideline for copper is the effects range median (ERM) value of 270 PPM (ug/g) dry weight (Long et al., 1995).

Guideline Reference:

Incidence of adverse biological effects within ranges of chemical concentrations in marine and estuary sediments. Environmental Management. 19, (1): 81-97

Spatial Representation:

Data were collected from 1 station(s). Station Code(s): 410CHN002 (Channel Islands Harbor CI2).

Temporal Representation:

Data for this waterbody were collected over the date range 2017-05-24 to 2017-05-24

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 135641, Copper	Region 4
Channel Islands Harbor

LOE ID:

247575

Pollutant:

Copper

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The evaluation guideline for copper is the effects range median (ERM) value of 270 PPM (ug/g) dry weight (Long et al., 1995).

Guideline Reference:

Incidence of adverse biological effects within ranges of chemical concentrations in marine and estuary sediments. Environmental Management. 19, (1): 81-97

Spatial Representation:

Data were collected from 1 station(s). Station Code(s): 410CHN003 (Channel Islands Harbor CI3).

Temporal Representation:

Data for this waterbody were collected over the date range 2017-05-24 to 2017-05-24

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.


DECISION ID	135717	Region 4
Channel Islands Harbor

Pollutant:	Cypermethrin
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.

Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.

Line of Evidence (LOE) for Decision ID 135717, Cypermethrin	Region 4
Channel Islands Harbor

LOE ID:

259631

Pollutant:

Cypermethrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The genus mean acute value for a grass shrimp (Palaemonetes pugio) of 0.016 ug/L (DFG 00-6, 2000).

Guideline Reference:

Aquatic Life Criteria for Pyrethroid Insecticides (DFG Administrative Report 00-6, 2000)

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-20 (Oxn_CI-20_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135717, Cypermethrin	Region 4
Channel Islands Harbor

LOE ID:

259698

Pollutant:

Cypermethrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The genus mean acute value for a grass shrimp (Palaemonetes pugio) of 0.016 ug/L (DFG 00-6, 2000).

Guideline Reference:

Aquatic Life Criteria for Pyrethroid Insecticides (DFG Administrative Report 00-6, 2000)

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-17 (Oxn_CI-17_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-11-22 and 2018-11-22

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135717, Cypermethrin	Region 4
Channel Islands Harbor

LOE ID:

259528

Pollutant:

Cypermethrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The genus mean acute value for a grass shrimp (Palaemonetes pugio) of 0.016 ug/L (DFG 00-6, 2000).

Guideline Reference:

Aquatic Life Criteria for Pyrethroid Insecticides (DFG Administrative Report 00-6, 2000)

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-16 (Oxn_CI-16_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135717, Cypermethrin	Region 4
Channel Islands Harbor

LOE ID:

259747

Pollutant:

Cypermethrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The genus mean acute value for a grass shrimp (Palaemonetes pugio) of 0.016 ug/L (DFG 00-6, 2000).

Guideline Reference:

Aquatic Life Criteria for Pyrethroid Insecticides (DFG Administrative Report 00-6, 2000)

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-02 (Oxn_CI-02_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-11-22 and 2018-11-22

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY


DECISION ID	149379	Region 4
Channel Islands Harbor

Pollutant:	DDD (Dichlorodiphenyldichloroethane)
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)(2018)
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available

Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.

Line of Evidence (LOE) for Decision ID 149379, DDD (Dichlorodiphenyldichloroethane)	Region 4
Channel Islands Harbor

LOE ID:

259690

Pollutant:

DDD (Dichlorodiphenyldichloroethane)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDD(p,p'). Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The 4,4'-DDD criterion for the protection of human health from consumption of organisms only is 0.00084 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-02 (Oxn_CI-02_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-11-29

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149379, DDD (Dichlorodiphenyldichloroethane)	Region 4
Channel Islands Harbor

LOE ID:

259708

Pollutant:

DDD (Dichlorodiphenyldichloroethane)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDD(p,p'). Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The 4,4'-DDD criterion for the protection of human health from consumption of organisms only is 0.00084 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-03 (Oxn_CI-03_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149379, DDD (Dichlorodiphenyldichloroethane)	Region 4
Channel Islands Harbor

LOE ID:

259485

Pollutant:

DDD (Dichlorodiphenyldichloroethane)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDD(p,p'). Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The 4,4'-DDD criterion for the protection of human health from consumption of organisms only is 0.00084 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-07 (Oxn_CI-07_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149379, DDD (Dichlorodiphenyldichloroethane)	Region 4
Channel Islands Harbor

LOE ID:

259706

Pollutant:

DDD (Dichlorodiphenyldichloroethane)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDD(p,p'). Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The 4,4'-DDD criterion for the protection of human health from consumption of organisms only is 0.00084 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-23 (Oxn_CI-23_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149379, DDD (Dichlorodiphenyldichloroethane)	Region 4
Channel Islands Harbor

LOE ID:

259671

Pollutant:

DDD (Dichlorodiphenyldichloroethane)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDD(p,p'). Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The 4,4'-DDD criterion for the protection of human health from consumption of organisms only is 0.00084 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-08 (Oxn_CI-08_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149379, DDD (Dichlorodiphenyldichloroethane)	Region 4
Channel Islands Harbor

LOE ID:

259741

Pollutant:

DDD (Dichlorodiphenyldichloroethane)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDD(p,p'). Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The 4,4'-DDD criterion for the protection of human health from consumption of organisms only is 0.00084 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-25 (Oxn_CI-25_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149379, DDD (Dichlorodiphenyldichloroethane)	Region 4
Channel Islands Harbor

LOE ID:

259740

Pollutant:

DDD (Dichlorodiphenyldichloroethane)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDD(p,p'). Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The 4,4'-DDD criterion for the protection of human health from consumption of organisms only is 0.00084 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-12 (Oxn_CI-12_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149379, DDD (Dichlorodiphenyldichloroethane)	Region 4
Channel Islands Harbor

LOE ID:

259657

Pollutant:

DDD (Dichlorodiphenyldichloroethane)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDD(p,p'). Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The 4,4'-DDD criterion for the protection of human health from consumption of organisms only is 0.00084 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-18 (Oxn_CI-18_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149379, DDD (Dichlorodiphenyldichloroethane)	Region 4
Channel Islands Harbor

LOE ID:

259575

Pollutant:

DDD (Dichlorodiphenyldichloroethane)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDD(p,p'). Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The 4,4'-DDD criterion for the protection of human health from consumption of organisms only is 0.00084 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-26 (Oxn_CI-26_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149379, DDD (Dichlorodiphenyldichloroethane)	Region 4
Channel Islands Harbor

LOE ID:

259724

Pollutant:

DDD (Dichlorodiphenyldichloroethane)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDD(p,p'). Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The 4,4'-DDD criterion for the protection of human health from consumption of organisms only is 0.00084 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-15 (Oxn_CI-15_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149379, DDD (Dichlorodiphenyldichloroethane)	Region 4
Channel Islands Harbor

LOE ID:

259573

Pollutant:

DDD (Dichlorodiphenyldichloroethane)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDD(p,p'). Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The 4,4'-DDD criterion for the protection of human health from consumption of organisms only is 0.00084 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-13 (Oxn_CI-13_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149379, DDD (Dichlorodiphenyldichloroethane)	Region 4
Channel Islands Harbor

LOE ID:

259558

Pollutant:

DDD (Dichlorodiphenyldichloroethane)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDD(p,p'). Although a total of 4 samples were collected, 4 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The 4,4'-DDD criterion for the protection of human health from consumption of organisms only is 0.00084 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-17 (Oxn_CI-17_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2019-12-04

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149379, DDD (Dichlorodiphenyldichloroethane)	Region 4
Channel Islands Harbor

LOE ID:

259503

Pollutant:

DDD (Dichlorodiphenyldichloroethane)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDD(p,p'). Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The 4,4'-DDD criterion for the protection of human health from consumption of organisms only is 0.00084 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-10 (Oxn_CI-10_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149379, DDD (Dichlorodiphenyldichloroethane)	Region 4
Channel Islands Harbor

LOE ID:

259705

Pollutant:

DDD (Dichlorodiphenyldichloroethane)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDD(p,p'). Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The 4,4'-DDD criterion for the protection of human health from consumption of organisms only is 0.00084 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-19 (Oxn_CI-19_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149379, DDD (Dichlorodiphenyldichloroethane)	Region 4
Channel Islands Harbor

LOE ID:

259689

Pollutant:

DDD (Dichlorodiphenyldichloroethane)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDD(p,p'). Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The 4,4'-DDD criterion for the protection of human health from consumption of organisms only is 0.00084 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-16 (Oxn_CI-16_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149379, DDD (Dichlorodiphenyldichloroethane)	Region 4
Channel Islands Harbor

LOE ID:

259688

Pollutant:

DDD (Dichlorodiphenyldichloroethane)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDD(p,p'). Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The 4,4'-DDD criterion for the protection of human health from consumption of organisms only is 0.00084 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-27 (Oxn_CI-27_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149379, DDD (Dichlorodiphenyldichloroethane)	Region 4
Channel Islands Harbor

LOE ID:

259673

Pollutant:

DDD (Dichlorodiphenyldichloroethane)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDD(p,p'). Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The 4,4'-DDD criterion for the protection of human health from consumption of organisms only is 0.00084 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-21 (Oxn_CI-21_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149379, DDD (Dichlorodiphenyldichloroethane)	Region 4
Channel Islands Harbor

LOE ID:

259576

Pollutant:

DDD (Dichlorodiphenyldichloroethane)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDD(p,p'). Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The 4,4'-DDD criterion for the protection of human health from consumption of organisms only is 0.00084 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-24 (Oxn_CI-24_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149379, DDD (Dichlorodiphenyldichloroethane)	Region 4
Channel Islands Harbor

LOE ID:

259624

Pollutant:

DDD (Dichlorodiphenyldichloroethane)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDD(p,p'). Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The 4,4'-DDD criterion for the protection of human health from consumption of organisms only is 0.00084 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-06 (Oxn_CI-06_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149379, DDD (Dichlorodiphenyldichloroethane)	Region 4
Channel Islands Harbor

LOE ID:

259540

Pollutant:

DDD (Dichlorodiphenyldichloroethane)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDD(p,p'). Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The 4,4'-DDD criterion for the protection of human health from consumption of organisms only is 0.00084 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-31 (Oxn_CI-31_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149379, DDD (Dichlorodiphenyldichloroethane)	Region 4
Channel Islands Harbor

LOE ID:

259521

Pollutant:

DDD (Dichlorodiphenyldichloroethane)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDD(p,p'). Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The 4,4'-DDD criterion for the protection of human health from consumption of organisms only is 0.00084 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-14 (Oxn_CI-14_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149379, DDD (Dichlorodiphenyldichloroethane)	Region 4
Channel Islands Harbor

LOE ID:

259590

Pollutant:

DDD (Dichlorodiphenyldichloroethane)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDD(p,p'). Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The 4,4'-DDD criterion for the protection of human health from consumption of organisms only is 0.00084 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-09 (Oxn_CI-09_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149379, DDD (Dichlorodiphenyldichloroethane)	Region 4
Channel Islands Harbor

LOE ID:

83654

Pollutant:

DDD (Dichlorodiphenyldichloroethane)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

The method detection limit for all of the non-detect samples was greater than the criteria: thus the data was not used in this assessment.

Data Reference:

RWB4 Miscellaneous Ventura Coastal 2006

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Per the Basin Plan: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in pesticide concentrations found in bottom sediments or aquatic life. The 4,4' DDD criteria for the protection of human health from consumption of organisms only is 0.00031 ug/L (USEPA Nationally Recommended Criteria, 2006).

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Samples are collected by hand from three sub-locations (A,B,C) from site 410VHCHN5. The three samples per site were averaged prior to assessment.

Temporal Representation:

Samples collected on 10/12/2006.

Environmental Conditions:

QAPP Information:

SWAMP QAPP (2008) was followed.

QAPP Information Reference(s):

Surface Water Ambient Monitoring Program Quality Assurance Program Plan

Line of Evidence (LOE) for Decision ID 149379, DDD (Dichlorodiphenyldichloroethane)	Region 4
Channel Islands Harbor

LOE ID:

83653

Pollutant:

DDD (Dichlorodiphenyldichloroethane)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

State Water Board staff assessed 4 data for Channel Islands Harbor to determine beneficial use support and results are as follows: 0 of 0 samples exceed the criterion for DDD(p,p). One sample result(s) were not used in the assessment because the laboratory data reporting limit(s) was above the objective and therefore the results could not be quantified with the level of certainty required by the Listing Policy.

Data Reference:

RWB4 Miscellaneous Ventura Coastal 2006

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

The DDD-4,4' criteria for the protection of human health from consumption of organisms only is 0.00084 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Data for this line of evidence for Channel Islands Harbor was collected at 1 monitoring site [ Channel Islands Harbor 5 - 410VHCHN5]

Temporal Representation:

Data was collected on a single day 10/12/2006.

Environmental Conditions:

Staff is not aware of any special conditions that might affect interpretation of the data.

QAPP Information:

The SWAMP QAPP (2008) was followed.

QAPP Information Reference(s):

Surface Water Ambient Monitoring Program Quality Assurance Program Plan

Line of Evidence (LOE) for Decision ID 149379, DDD (Dichlorodiphenyldichloroethane)	Region 4
Channel Islands Harbor

LOE ID:

259591

Pollutant:

DDD (Dichlorodiphenyldichloroethane)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDD(p,p'). Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The 4,4'-DDD criterion for the protection of human health from consumption of organisms only is 0.00084 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-20 (Oxn_CI-20_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149379, DDD (Dichlorodiphenyldichloroethane)	Region 4
Channel Islands Harbor

LOE ID:

259523

Pollutant:

DDD (Dichlorodiphenyldichloroethane)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDD(p,p'). Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The 4,4'-DDD criterion for the protection of human health from consumption of organisms only is 0.00084 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-22 (Oxn_CI-22_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149379, DDD (Dichlorodiphenyldichloroethane)	Region 4
Channel Islands Harbor

LOE ID:

259707

Pollutant:

DDD (Dichlorodiphenyldichloroethane)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDD(p,p'). Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The 4,4'-DDD criterion for the protection of human health from consumption of organisms only is 0.00084 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-11 (Oxn_CI-11_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY


DECISION ID	149380	Region 4
Channel Islands Harbor

Pollutant:	DDE (Dichlorodiphenyldichloroethylene)
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)(2018)
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available

Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.

Line of Evidence (LOE) for Decision ID 149380, DDE (Dichlorodiphenyldichloroethylene)	Region 4
Channel Islands Harbor

LOE ID:

259879

Pollutant:

DDE (Dichlorodiphenyldichloroethylene)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDE(p,p'). Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The 4,4'-DDE [DDE(p,p')] criterion to protect human health from the consumption of organisms only is 0.00059 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-02 (Oxn_CI-02_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-11-29

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149380, DDE (Dichlorodiphenyldichloroethylene)	Region 4
Channel Islands Harbor

LOE ID:

259643

Pollutant:

DDE (Dichlorodiphenyldichloroethylene)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDE(p,p'). Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The 4,4'-DDE [DDE(p,p')] criterion to protect human health from the consumption of organisms only is 0.00059 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-11 (Oxn_CI-11_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149380, DDE (Dichlorodiphenyldichloroethylene)	Region 4
Channel Islands Harbor

LOE ID:

259933

Pollutant:

DDE (Dichlorodiphenyldichloroethylene)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDE(p,p'). Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The 4,4'-DDE [DDE(p,p')] criterion to protect human health from the consumption of organisms only is 0.00059 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-14 (Oxn_CI-14_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149380, DDE (Dichlorodiphenyldichloroethylene)	Region 4
Channel Islands Harbor

LOE ID:

259642

Pollutant:

DDE (Dichlorodiphenyldichloroethylene)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDE(p,p'). Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The 4,4'-DDE [DDE(p,p')] criterion to protect human health from the consumption of organisms only is 0.00059 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-19 (Oxn_CI-19_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149380, DDE (Dichlorodiphenyldichloroethylene)	Region 4
Channel Islands Harbor

LOE ID:

259641

Pollutant:

DDE (Dichlorodiphenyldichloroethylene)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDE(p,p'). Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The 4,4'-DDE [DDE(p,p')] criterion to protect human health from the consumption of organisms only is 0.00059 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-08 (Oxn_CI-08_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149380, DDE (Dichlorodiphenyldichloroethylene)	Region 4
Channel Islands Harbor

LOE ID:

259877

Pollutant:

DDE (Dichlorodiphenyldichloroethylene)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDE(p,p'). Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The 4,4'-DDE [DDE(p,p')] criterion to protect human health from the consumption of organisms only is 0.00059 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-03 (Oxn_CI-03_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149380, DDE (Dichlorodiphenyldichloroethylene)	Region 4
Channel Islands Harbor

LOE ID:

259711

Pollutant:

DDE (Dichlorodiphenyldichloroethylene)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDE(p,p'). Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The 4,4'-DDE [DDE(p,p')] criterion to protect human health from the consumption of organisms only is 0.00059 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-26 (Oxn_CI-26_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149380, DDE (Dichlorodiphenyldichloroethylene)	Region 4
Channel Islands Harbor

LOE ID:

259693

Pollutant:

DDE (Dichlorodiphenyldichloroethylene)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDE(p,p'). Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The 4,4'-DDE [DDE(p,p')] criterion to protect human health from the consumption of organisms only is 0.00059 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-22 (Oxn_CI-22_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149380, DDE (Dichlorodiphenyldichloroethylene)	Region 4
Channel Islands Harbor

LOE ID:

259743

Pollutant:

DDE (Dichlorodiphenyldichloroethylene)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDE(p,p'). Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The 4,4'-DDE [DDE(p,p')] criterion to protect human health from the consumption of organisms only is 0.00059 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-23 (Oxn_CI-23_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149380, DDE (Dichlorodiphenyldichloroethylene)	Region 4
Channel Islands Harbor

LOE ID:

259542

Pollutant:

DDE (Dichlorodiphenyldichloroethylene)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDE(p,p'). Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The 4,4'-DDE [DDE(p,p')] criterion to protect human health from the consumption of organisms only is 0.00059 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-12 (Oxn_CI-12_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149380, DDE (Dichlorodiphenyldichloroethylene)	Region 4
Channel Islands Harbor

LOE ID:

259489

Pollutant:

DDE (Dichlorodiphenyldichloroethylene)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDE(p,p'). Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The 4,4'-DDE [DDE(p,p')] criterion to protect human health from the consumption of organisms only is 0.00059 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-20 (Oxn_CI-20_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149380, DDE (Dichlorodiphenyldichloroethylene)	Region 4
Channel Islands Harbor

LOE ID:

259712

Pollutant:

DDE (Dichlorodiphenyldichloroethylene)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDE(p,p'). Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The 4,4'-DDE [DDE(p,p')] criterion to protect human health from the consumption of organisms only is 0.00059 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-15 (Oxn_CI-15_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149380, DDE (Dichlorodiphenyldichloroethylene)	Region 4
Channel Islands Harbor

LOE ID:

259696

Pollutant:

DDE (Dichlorodiphenyldichloroethylene)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDE(p,p'). Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The 4,4'-DDE [DDE(p,p')] criterion to protect human health from the consumption of organisms only is 0.00059 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-16 (Oxn_CI-16_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149380, DDE (Dichlorodiphenyldichloroethylene)	Region 4
Channel Islands Harbor

LOE ID:

259544

Pollutant:

DDE (Dichlorodiphenyldichloroethylene)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDE(p,p'). Although a total of 4 samples were collected, 4 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The 4,4'-DDE [DDE(p,p')] criterion to protect human health from the consumption of organisms only is 0.00059 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-17 (Oxn_CI-17_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2019-12-04

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149380, DDE (Dichlorodiphenyldichloroethylene)	Region 4
Channel Islands Harbor

LOE ID:

259679

Pollutant:

DDE (Dichlorodiphenyldichloroethylene)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDE(p,p'). Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The 4,4'-DDE [DDE(p,p')] criterion to protect human health from the consumption of organisms only is 0.00059 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-21 (Oxn_CI-21_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149380, DDE (Dichlorodiphenyldichloroethylene)	Region 4
Channel Islands Harbor

LOE ID:

259861

Pollutant:

DDE (Dichlorodiphenyldichloroethylene)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDE(p,p'). Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The 4,4'-DDE [DDE(p,p')] criterion to protect human health from the consumption of organisms only is 0.00059 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-25 (Oxn_CI-25_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149380, DDE (Dichlorodiphenyldichloroethylene)	Region 4
Channel Islands Harbor

LOE ID:

259857

Pollutant:

DDE (Dichlorodiphenyldichloroethylene)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDE(p,p'). Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The 4,4'-DDE [DDE(p,p')] criterion to protect human health from the consumption of organisms only is 0.00059 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-07 (Oxn_CI-07_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149380, DDE (Dichlorodiphenyldichloroethylene)	Region 4
Channel Islands Harbor

LOE ID:

259527

Pollutant:

DDE (Dichlorodiphenyldichloroethylene)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDE(p,p'). Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The 4,4'-DDE [DDE(p,p')] criterion to protect human health from the consumption of organisms only is 0.00059 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-09 (Oxn_CI-09_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149380, DDE (Dichlorodiphenyldichloroethylene)	Region 4
Channel Islands Harbor

LOE ID:

259676

Pollutant:

DDE (Dichlorodiphenyldichloroethylene)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDE(p,p'). Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The 4,4'-DDE [DDE(p,p')] criterion to protect human health from the consumption of organisms only is 0.00059 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-06 (Oxn_CI-06_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149380, DDE (Dichlorodiphenyldichloroethylene)	Region 4
Channel Islands Harbor

LOE ID:

259659

Pollutant:

DDE (Dichlorodiphenyldichloroethylene)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDE(p,p'). Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The 4,4'-DDE [DDE(p,p')] criterion to protect human health from the consumption of organisms only is 0.00059 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-18 (Oxn_CI-18_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149380, DDE (Dichlorodiphenyldichloroethylene)	Region 4
Channel Islands Harbor

LOE ID:

259912

Pollutant:

DDE (Dichlorodiphenyldichloroethylene)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDE(p,p'). Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The 4,4'-DDE [DDE(p,p')] criterion to protect human health from the consumption of organisms only is 0.00059 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-31 (Oxn_CI-31_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149380, DDE (Dichlorodiphenyldichloroethylene)	Region 4
Channel Islands Harbor

LOE ID:

259541

Pollutant:

DDE (Dichlorodiphenyldichloroethylene)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDE(p,p'). Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The 4,4'-DDE [DDE(p,p')] criterion to protect human health from the consumption of organisms only is 0.00059 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-27 (Oxn_CI-27_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149380, DDE (Dichlorodiphenyldichloroethylene)	Region 4
Channel Islands Harbor

LOE ID:

83656

Pollutant:

DDE (Dichlorodiphenyldichloroethylene)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

The method detection limit for all of the non-detect samples was greater than the criteria: thus the data was not used in this assessment.

Data Reference:

RWB4 Miscellaneous Ventura Coastal 2006

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Per the Basin Plan: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in pesticide concentrations found in bottom sediments or aquatic life. The 4,4' DDE criteria for the protection of human health from consumption of organisms only is 0.00022 ug/L (USEPA Nationally Recommended Criteria, 2006).

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Samples are collected by hand from three sub-locations (A,B,C) from site 410VHCHN5. The three samples per site were averaged prior to assessment.

Temporal Representation:

Samples collected on 10/12/2006.

Environmental Conditions:

QAPP Information:

SWAMP QAPP (2008) was followed.

QAPP Information Reference(s):

Surface Water Ambient Monitoring Program Quality Assurance Program Plan

Line of Evidence (LOE) for Decision ID 149380, DDE (Dichlorodiphenyldichloroethylene)	Region 4
Channel Islands Harbor

LOE ID:

83655

Pollutant:

DDE (Dichlorodiphenyldichloroethylene)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

State Water Board staff assessed 4 data for Channel Islands Harbor to determine beneficial use support and results are as follows: 0 of 0 samples exceed the criterion for DDE(p,p). One sample result(s) were not used in the assessment because the laboratory data reporting limit(s) was above the objective and therefore the results could not be quantified with the level of certainty required by the Listing Policy.

Data Reference:

RWB4 Miscellaneous Ventura Coastal 2006

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

The DDE-4,4' criteria for the protection of human health from consumption of organisms only is 0.00059 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Data for this line of evidence for Channel Islands Harbor was collected at 1 monitoring site [ Channel Islands Harbor 5 - 410VHCHN5]

Temporal Representation:

Data was collected on a single day 10/12/2006.

Environmental Conditions:

Staff is not aware of any special conditions that might affect interpretation of the data.

QAPP Information:

The SWAMP QAPP (2008) was followed.

QAPP Information Reference(s):

Surface Water Ambient Monitoring Program Quality Assurance Program Plan

Line of Evidence (LOE) for Decision ID 149380, DDE (Dichlorodiphenyldichloroethylene)	Region 4
Channel Islands Harbor

LOE ID:

259678

Pollutant:

DDE (Dichlorodiphenyldichloroethylene)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDE(p,p'). Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The 4,4'-DDE [DDE(p,p')] criterion to protect human health from the consumption of organisms only is 0.00059 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-13 (Oxn_CI-13_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149380, DDE (Dichlorodiphenyldichloroethylene)	Region 4
Channel Islands Harbor

LOE ID:

259506

Pollutant:

DDE (Dichlorodiphenyldichloroethylene)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDE(p,p'). Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The 4,4'-DDE [DDE(p,p')] criterion to protect human health from the consumption of organisms only is 0.00059 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-24 (Oxn_CI-24_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149380, DDE (Dichlorodiphenyldichloroethylene)	Region 4
Channel Islands Harbor

LOE ID:

259727

Pollutant:

DDE (Dichlorodiphenyldichloroethylene)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDE(p,p'). Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The 4,4'-DDE [DDE(p,p')] criterion to protect human health from the consumption of organisms only is 0.00059 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-10 (Oxn_CI-10_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY


DECISION ID	149381	Region 4
Channel Islands Harbor

Pollutant:	DDT (Dichlorodiphenyltrichloroethane)
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)(2018)
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available

Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.

Line of Evidence (LOE) for Decision ID 149381, DDT (Dichlorodiphenyltrichloroethane)	Region 4
Channel Islands Harbor

LOE ID:

259904

Pollutant:

DDT (Dichlorodiphenyltrichloroethane)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDT(p,p'). Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The DDT(4,4') criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.001 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-11 (Oxn_CI-11_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149381, DDT (Dichlorodiphenyltrichloroethane)	Region 4
Channel Islands Harbor

LOE ID:

259905

Pollutant:

DDT (Dichlorodiphenyltrichloroethane)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDT(p,p'). Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The DDT(4,4') criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.001 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-08 (Oxn_CI-08_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149381, DDT (Dichlorodiphenyltrichloroethane)	Region 4
Channel Islands Harbor

LOE ID:

260011

Pollutant:

DDT (Dichlorodiphenyltrichloroethane)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDT(p,p'). Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The DDT(4,4') criterion for the protection of human health from consumption of organisms only is 0.00059 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-03 (Oxn_CI-03_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149381, DDT (Dichlorodiphenyltrichloroethane)	Region 4
Channel Islands Harbor

LOE ID:

259863

Pollutant:

DDT (Dichlorodiphenyltrichloroethane)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDT(p,p'). Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The DDT(4,4') criterion for the protection of human health from consumption of organisms only is 0.00059 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-11 (Oxn_CI-11_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149381, DDT (Dichlorodiphenyltrichloroethane)	Region 4
Channel Islands Harbor

LOE ID:

259799

Pollutant:

DDT (Dichlorodiphenyltrichloroethane)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDT(p,p'). Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The DDT(4,4') criterion for the protection of human health from consumption of organisms only is 0.00059 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-23 (Oxn_CI-23_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149381, DDT (Dichlorodiphenyltrichloroethane)	Region 4
Channel Islands Harbor

LOE ID:

259954

Pollutant:

DDT (Dichlorodiphenyltrichloroethane)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDT(p,p'). Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The DDT(4,4') criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.001 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-24 (Oxn_CI-24_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149381, DDT (Dichlorodiphenyltrichloroethane)	Region 4
Channel Islands Harbor

LOE ID:

259940

Pollutant:

DDT (Dichlorodiphenyltrichloroethane)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDT(p,p'). Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The DDT(4,4') criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.001 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-15 (Oxn_CI-15_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149381, DDT (Dichlorodiphenyltrichloroethane)	Region 4
Channel Islands Harbor

LOE ID:

259927

Pollutant:

DDT (Dichlorodiphenyltrichloroethane)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDT(p,p'). Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The DDT(4,4') criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.001 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-06 (Oxn_CI-06_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149381, DDT (Dichlorodiphenyltrichloroethane)	Region 4
Channel Islands Harbor

LOE ID:

259971

Pollutant:

DDT (Dichlorodiphenyltrichloroethane)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDT(p,p'). Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The DDT(4,4') criterion for the protection of human health from consumption of organisms only is 0.00059 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-15 (Oxn_CI-15_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149381, DDT (Dichlorodiphenyltrichloroethane)	Region 4
Channel Islands Harbor

LOE ID:

259847

Pollutant:

DDT (Dichlorodiphenyltrichloroethane)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDT(p,p'). Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The DDT(4,4') criterion for the protection of human health from consumption of organisms only is 0.00059 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-12 (Oxn_CI-12_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149381, DDT (Dichlorodiphenyltrichloroethane)	Region 4
Channel Islands Harbor

LOE ID:

259975

Pollutant:

DDT (Dichlorodiphenyltrichloroethane)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDT(p,p'). Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The DDT(4,4') criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.001 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-12 (Oxn_CI-12_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149381, DDT (Dichlorodiphenyltrichloroethane)	Region 4
Channel Islands Harbor

LOE ID:

259797

Pollutant:

DDT (Dichlorodiphenyltrichloroethane)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDT(p,p'). Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The DDT(4,4') criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.001 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-23 (Oxn_CI-23_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149381, DDT (Dichlorodiphenyltrichloroethane)	Region 4
Channel Islands Harbor

LOE ID:

259986

Pollutant:

DDT (Dichlorodiphenyltrichloroethane)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDT(p,p'). Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The DDT(4,4') criterion for the protection of human health from consumption of organisms only is 0.00059 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-10 (Oxn_CI-10_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149381, DDT (Dichlorodiphenyltrichloroethane)	Region 4
Channel Islands Harbor

LOE ID:

83658

Pollutant:

DDT (Dichlorodiphenyltrichloroethane)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

State Water Board staff assessed 4 data for Channel Islands Harbor to determine beneficial use support and results are as follows: 0 of 0 samples exceed the criterion for DDT(p,p). One sample result(s) were not used in the assessment because the laboratory data reporting limit(s) was above the objective and therefore the results could not be quantified with the level of certainty required by the Listing Policy.

Data Reference:

RWB4 Miscellaneous Ventura Coastal 2006

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

The DDT-4,4' criteria for the protection of human health from consumption of organisms only is 0.00059 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Data for this line of evidence for Channel Islands Harbor was collected at 1 monitoring site [ Channel Islands Harbor 5 - 410VHCHN5]

Temporal Representation:

Data was collected on a single day 10/12/2006.

Environmental Conditions:

Staff is not aware of any special conditions that might affect interpretation of the data.

QAPP Information:

The SWAMP QAPP (2008) was followed.

QAPP Information Reference(s):

Surface Water Ambient Monitoring Program Quality Assurance Program Plan

Line of Evidence (LOE) for Decision ID 149381, DDT (Dichlorodiphenyltrichloroethane)	Region 4
Channel Islands Harbor

LOE ID:

83657

Pollutant:

DDT (Dichlorodiphenyltrichloroethane)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

State Water Board staff assessed 4 data for Channel Islands Harbor to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for DDT(p,p).

Data Reference:

RWB4 Miscellaneous Ventura Coastal 2006

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

The DDT criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.001 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Data for this line of evidence for Channel Islands Harbor was collected at 1 monitoring site [ Channel Islands Harbor 5 - 410VHCHN5]

Temporal Representation:

Data was collected on a single day 10/12/2006.

Environmental Conditions:

Staff is not aware of any special conditions that might affect interpretation of the data.

QAPP Information:

The SWAMP QAPP (2008) was followed.

QAPP Information Reference(s):

Surface Water Ambient Monitoring Program Quality Assurance Program Plan

Line of Evidence (LOE) for Decision ID 149381, DDT (Dichlorodiphenyltrichloroethane)	Region 4
Channel Islands Harbor

LOE ID:

83660

Pollutant:

DDT (Dichlorodiphenyltrichloroethane)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

The method detection limit for all of the non-detect samples was greater than the criteria: thus the data was not used in this assessment.

Data Reference:

RWB4 Miscellaneous Ventura Coastal 2006

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Per the Basin Plan: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in pesticide concentrations found in bottom sediments or aquatic life. The 4,4' DDT criteria for the protection of human health from consumption of organisms only is 0.00022 ug/L (USEPA Nationally Recommended Criteria, 2006).

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Samples are collected by hand from three sub-locations (A,B,C) from site 410VHCHN5. The three samples per site were averaged prior to assessment.

Temporal Representation:

Samples collected on 10/12/2006.

Environmental Conditions:

QAPP Information:

SWAMP QAPP (2008) was followed.

QAPP Information Reference(s):

Surface Water Ambient Monitoring Program Quality Assurance Program Plan

Line of Evidence (LOE) for Decision ID 149381, DDT (Dichlorodiphenyltrichloroethane)	Region 4
Channel Islands Harbor

LOE ID:

83659

Pollutant:

DDT (Dichlorodiphenyltrichloroethane)

LOE Subgroup:

Pollutant-Tissue

Matrix:

Tissue

Fraction:

Fish fillet

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

Fish tissue analysis

Data Used to Assess Water Quality:

Data Reference:

RWB4 Miscellaneous Ventura Coastal 2006

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The modified OEHHA Fish Contaminant Goal for total DDT in fish tissue is 15 ppb. This screening level assumes an average body weight of 70 kg and a consumption rate of 32 g/day for a 30 year exposure over a 70-year lifetime. This constituent is a carcinogen therefore the risk level is set to one in a million. A cooking reduction factor of 1 is applied for skin-off fillets (Klasing, S., and R. Brodberg, 2008).

Guideline Reference:

Development of Fish Contaminant Goals and Advisory Tissue Levels for Common Contaminants in California Sport Fish: Chlordane, DDTs, Dieldrin, Methylmercury, PCBs, Selenium, and Toxaphene

Spatial Representation:

Samples are collected by hand from three sub-locations (A,B,C) from site 410VHCHN5. The three samples per site were averaged prior to assessment.

Temporal Representation:

Representative samples of locally abundant species were collected on February 28, 2007.

Environmental Conditions:

QAPP Information:

Samples were collected as part of the State Water Board's Surface Water Ambient Monitoring Program.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 149381, DDT (Dichlorodiphenyltrichloroethane)	Region 4
Channel Islands Harbor

LOE ID:

259830

Pollutant:

DDT (Dichlorodiphenyltrichloroethane)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDT(p,p'). Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The DDT(4,4') criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.001 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-16 (Oxn_CI-16_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149381, DDT (Dichlorodiphenyltrichloroethane)	Region 4
Channel Islands Harbor

LOE ID:

259911

Pollutant:

DDT (Dichlorodiphenyltrichloroethane)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDT(p,p'). Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The DDT(4,4') criterion for the protection of human health from consumption of organisms only is 0.00059 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-21 (Oxn_CI-21_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149381, DDT (Dichlorodiphenyltrichloroethane)	Region 4
Channel Islands Harbor

LOE ID:

259969

Pollutant:

DDT (Dichlorodiphenyltrichloroethane)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDT(p,p'). Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The DDT(4,4') criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.001 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-27 (Oxn_CI-27_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149381, DDT (Dichlorodiphenyltrichloroethane)	Region 4
Channel Islands Harbor

LOE ID:

259900

Pollutant:

DDT (Dichlorodiphenyltrichloroethane)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDT(p,p'). Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The DDT(4,4') criterion for the protection of human health from consumption of organisms only is 0.00059 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-02 (Oxn_CI-02_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-11-29

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149381, DDT (Dichlorodiphenyltrichloroethane)	Region 4
Channel Islands Harbor

LOE ID:

259884

Pollutant:

DDT (Dichlorodiphenyltrichloroethane)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDT(p,p'). Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The DDT(4,4') criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.001 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-14 (Oxn_CI-14_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149381, DDT (Dichlorodiphenyltrichloroethane)	Region 4
Channel Islands Harbor

LOE ID:

259992

Pollutant:

DDT (Dichlorodiphenyltrichloroethane)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDT(p,p'). Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The DDT(4,4') criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.001 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-10 (Oxn_CI-10_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149381, DDT (Dichlorodiphenyltrichloroethane)	Region 4
Channel Islands Harbor

LOE ID:

259836

Pollutant:

DDT (Dichlorodiphenyltrichloroethane)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDT(p,p'). Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The DDT(4,4') criterion for the protection of human health from consumption of organisms only is 0.00059 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-27 (Oxn_CI-27_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149381, DDT (Dichlorodiphenyltrichloroethane)	Region 4
Channel Islands Harbor

LOE ID:

259988

Pollutant:

DDT (Dichlorodiphenyltrichloroethane)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDT(p,p'). Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The DDT(4,4') criterion for the protection of human health from consumption of organisms only is 0.00059 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-22 (Oxn_CI-22_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149381, DDT (Dichlorodiphenyltrichloroethane)	Region 4
Channel Islands Harbor

LOE ID:

259989

Pollutant:

DDT (Dichlorodiphenyltrichloroethane)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDT(p,p'). Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The DDT(4,4') criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.001 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-22 (Oxn_CI-22_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149381, DDT (Dichlorodiphenyltrichloroethane)	Region 4
Channel Islands Harbor

LOE ID:

259837

Pollutant:

DDT (Dichlorodiphenyltrichloroethane)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDT(p,p'). Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The DDT(4,4') criterion for the protection of human health from consumption of organisms only is 0.00059 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-31 (Oxn_CI-31_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149381, DDT (Dichlorodiphenyltrichloroethane)	Region 4
Channel Islands Harbor

LOE ID:

259934

Pollutant:

DDT (Dichlorodiphenyltrichloroethane)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDT(p,p'). Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The DDT(4,4') criterion for the protection of human health from consumption of organisms only is 0.00059 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-16 (Oxn_CI-16_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149381, DDT (Dichlorodiphenyltrichloroethane)	Region 4
Channel Islands Harbor

LOE ID:

259855

Pollutant:

DDT (Dichlorodiphenyltrichloroethane)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDT(p,p'). Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The DDT(4,4') criterion for the protection of human health from consumption of organisms only is 0.00059 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-24 (Oxn_CI-24_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149381, DDT (Dichlorodiphenyltrichloroethane)	Region 4
Channel Islands Harbor

LOE ID:

259821

Pollutant:

DDT (Dichlorodiphenyltrichloroethane)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDT(p,p'). Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The DDT(4,4') criterion for the protection of human health from consumption of organisms only is 0.00059 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-20 (Oxn_CI-20_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149381, DDT (Dichlorodiphenyltrichloroethane)	Region 4
Channel Islands Harbor

LOE ID:

259903

Pollutant:

DDT (Dichlorodiphenyltrichloroethane)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDT(p,p'). Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The DDT(4,4') criterion for the protection of human health from consumption of organisms only is 0.00059 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-13 (Oxn_CI-13_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149381, DDT (Dichlorodiphenyltrichloroethane)	Region 4
Channel Islands Harbor

LOE ID:

259923

Pollutant:

DDT (Dichlorodiphenyltrichloroethane)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDT(p,p'). Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The DDT(4,4') criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.001 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-19 (Oxn_CI-19_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149381, DDT (Dichlorodiphenyltrichloroethane)	Region 4
Channel Islands Harbor

LOE ID:

259943

Pollutant:

DDT (Dichlorodiphenyltrichloroethane)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDT(p,p'). Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The DDT(4,4') criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.001 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-13 (Oxn_CI-13_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149381, DDT (Dichlorodiphenyltrichloroethane)	Region 4
Channel Islands Harbor

LOE ID:

259957

Pollutant:

DDT (Dichlorodiphenyltrichloroethane)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDT(p,p'). Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The DDT(4,4') criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.001 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-21 (Oxn_CI-21_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149381, DDT (Dichlorodiphenyltrichloroethane)	Region 4
Channel Islands Harbor

LOE ID:

259758

Pollutant:

DDT (Dichlorodiphenyltrichloroethane)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDT(p,p'). Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The DDT(4,4') criterion for the protection of human health from consumption of organisms only is 0.00059 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-09 (Oxn_CI-09_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149381, DDT (Dichlorodiphenyltrichloroethane)	Region 4
Channel Islands Harbor

LOE ID:

260008

Pollutant:

DDT (Dichlorodiphenyltrichloroethane)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDT(p,p'). Although a total of 4 samples were collected, 4 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The DDT(4,4') criterion for the protection of human health from consumption of organisms only is 0.00059 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-17 (Oxn_CI-17_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2019-12-04

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149381, DDT (Dichlorodiphenyltrichloroethane)	Region 4
Channel Islands Harbor

LOE ID:

259781

Pollutant:

DDT (Dichlorodiphenyltrichloroethane)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDT(p,p'). Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The DDT(4,4') criterion for the protection of human health from consumption of organisms only is 0.00059 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-25 (Oxn_CI-25_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149381, DDT (Dichlorodiphenyltrichloroethane)	Region 4
Channel Islands Harbor

LOE ID:

259873

Pollutant:

DDT (Dichlorodiphenyltrichloroethane)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDT(p,p'). Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The DDT(4,4') criterion for the protection of human health from consumption of organisms only is 0.00059 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-18 (Oxn_CI-18_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149381, DDT (Dichlorodiphenyltrichloroethane)	Region 4
Channel Islands Harbor

LOE ID:

259819

Pollutant:

DDT (Dichlorodiphenyltrichloroethane)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDT(p,p'). Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The DDT(4,4') criterion for the protection of human health from consumption of organisms only is 0.00059 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-07 (Oxn_CI-07_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149381, DDT (Dichlorodiphenyltrichloroethane)	Region 4
Channel Islands Harbor

LOE ID:

259991

Pollutant:

DDT (Dichlorodiphenyltrichloroethane)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDT(p,p'). Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The DDT(4,4') criterion for the protection of human health from consumption of organisms only is 0.00059 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-19 (Oxn_CI-19_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149381, DDT (Dichlorodiphenyltrichloroethane)	Region 4
Channel Islands Harbor

LOE ID:

260005

Pollutant:

DDT (Dichlorodiphenyltrichloroethane)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDT(p,p'). Although a total of 4 samples were collected, 4 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The DDT(4,4') criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.001 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-17 (Oxn_CI-17_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2019-12-04

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149381, DDT (Dichlorodiphenyltrichloroethane)	Region 4
Channel Islands Harbor

LOE ID:

259908

Pollutant:

DDT (Dichlorodiphenyltrichloroethane)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDT(p,p'). Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The DDT(4,4') criterion for the protection of human health from consumption of organisms only is 0.00059 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-06 (Oxn_CI-06_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149381, DDT (Dichlorodiphenyltrichloroethane)	Region 4
Channel Islands Harbor

LOE ID:

259892

Pollutant:

DDT (Dichlorodiphenyltrichloroethane)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDT(p,p'). Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The DDT(4,4') criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.001 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-18 (Oxn_CI-18_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149381, DDT (Dichlorodiphenyltrichloroethane)	Region 4
Channel Islands Harbor

LOE ID:

259777

Pollutant:

DDT (Dichlorodiphenyltrichloroethane)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDT(p,p'). Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The DDT(4,4') criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.001 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-02 (Oxn_CI-02_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-11-29

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149381, DDT (Dichlorodiphenyltrichloroethane)	Region 4
Channel Islands Harbor

LOE ID:

259886

Pollutant:

DDT (Dichlorodiphenyltrichloroethane)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDT(p,p'). Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The DDT(4,4') criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.001 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-03 (Oxn_CI-03_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149381, DDT (Dichlorodiphenyltrichloroethane)	Region 4
Channel Islands Harbor

LOE ID:

259764

Pollutant:

DDT (Dichlorodiphenyltrichloroethane)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDT(p,p'). Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The DDT(4,4') criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.001 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-25 (Oxn_CI-25_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149381, DDT (Dichlorodiphenyltrichloroethane)	Region 4
Channel Islands Harbor

LOE ID:

259852

Pollutant:

DDT (Dichlorodiphenyltrichloroethane)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDT(p,p'). Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The DDT(4,4') criterion for the protection of human health from consumption of organisms only is 0.00059 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-08 (Oxn_CI-08_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149381, DDT (Dichlorodiphenyltrichloroethane)	Region 4
Channel Islands Harbor

LOE ID:

259813

Pollutant:

DDT (Dichlorodiphenyltrichloroethane)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDT(p,p'). Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The DDT(4,4') criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.001 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-09 (Oxn_CI-09_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149381, DDT (Dichlorodiphenyltrichloroethane)	Region 4
Channel Islands Harbor

LOE ID:

259885

Pollutant:

DDT (Dichlorodiphenyltrichloroethane)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDT(p,p'). Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The DDT(4,4') criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.001 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-26 (Oxn_CI-26_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149381, DDT (Dichlorodiphenyltrichloroethane)	Region 4
Channel Islands Harbor

LOE ID:

259749

Pollutant:

DDT (Dichlorodiphenyltrichloroethane)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDT(p,p'). Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The DDT(4,4') criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.001 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-20 (Oxn_CI-20_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149381, DDT (Dichlorodiphenyltrichloroethane)	Region 4
Channel Islands Harbor

LOE ID:

259818

Pollutant:

DDT (Dichlorodiphenyltrichloroethane)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDT(p,p'). Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The DDT(4,4') criterion for the protection of human health from consumption of organisms only is 0.00059 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-26 (Oxn_CI-26_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149381, DDT (Dichlorodiphenyltrichloroethane)	Region 4
Channel Islands Harbor

LOE ID:

259832

Pollutant:

DDT (Dichlorodiphenyltrichloroethane)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDT(p,p'). Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The DDT(4,4') criterion for the protection of human health from consumption of organisms only is 0.00059 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-14 (Oxn_CI-14_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149381, DDT (Dichlorodiphenyltrichloroethane)	Region 4
Channel Islands Harbor

LOE ID:

259976

Pollutant:

DDT (Dichlorodiphenyltrichloroethane)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDT(p,p'). Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The DDT(4,4') criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.001 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-07 (Oxn_CI-07_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149381, DDT (Dichlorodiphenyltrichloroethane)	Region 4
Channel Islands Harbor

LOE ID:

259968

Pollutant:

DDT (Dichlorodiphenyltrichloroethane)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDT(p,p'). Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The DDT(4,4') criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.001 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-31 (Oxn_CI-31_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY


DECISION ID	135725	Region 4
Channel Islands Harbor

Pollutant:	Demeton
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status. 1 lines of evidence are available in the administrative record to assess this pollutant. 0 of 27 samples exceed the criteria. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the CWA section 303(d) List in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. 0 of 27 samples exceed the criteria and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.

Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because applicable water quality standards are not being exceeded.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.

Line of Evidence (LOE) for Decision ID 135725, Demeton	Region 4
Channel Islands Harbor

LOE ID:

260120

Pollutant:

Demeton

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the water quality threshold for Demeton, Total. Although a total of 2 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

USEPA National Recommended Water Quality Criteria lists criterion continuous concentrations for Demeton to protect aquatic life in freshwater and saltwater is 0.1 ug/L.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (Oxn_CI-25).

Temporal Representation:

Data for this waterbody was collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135725, Demeton	Region 4
Channel Islands Harbor

LOE ID:

260178

Pollutant:

Demeton

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

USEPA National Recommended Water Quality Criteria lists criterion continuous concentrations for Demeton to protect aquatic life in freshwater and saltwater is 0.1 ug/L.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (Oxn_CI-19).

Temporal Representation:

Data for this waterbody was collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135725, Demeton	Region 4
Channel Islands Harbor

LOE ID:

260200

Pollutant:

Demeton

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for Demeton, Total. Although a total of 5 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

USEPA National Recommended Water Quality Criteria lists criterion continuous concentrations for Demeton to protect aquatic life in freshwater and saltwater is 0.1 ug/L.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (Oxn_CI-02).

Temporal Representation:

Data for this waterbody was collected over the date range 2018-10-08 to 2018-11-29

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135725, Demeton	Region 4
Channel Islands Harbor

LOE ID:

260198

Pollutant:

Demeton

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

USEPA National Recommended Water Quality Criteria lists criterion continuous concentrations for Demeton to protect aquatic life in freshwater and saltwater is 0.1 ug/L.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (Oxn_CI-18).

Temporal Representation:

Data for this waterbody was collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135725, Demeton	Region 4
Channel Islands Harbor

LOE ID:

260102

Pollutant:

Demeton

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

USEPA National Recommended Water Quality Criteria lists criterion continuous concentrations for Demeton to protect aquatic life in freshwater and saltwater is 0.1 ug/L.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (Oxn_CI-10).

Temporal Representation:

Data for this waterbody was collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135725, Demeton	Region 4
Channel Islands Harbor

LOE ID:

260103

Pollutant:

Demeton

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

USEPA National Recommended Water Quality Criteria lists criterion continuous concentrations for Demeton to protect aquatic life in freshwater and saltwater is 0.1 ug/L.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (Oxn_CI-23).

Temporal Representation:

Data for this waterbody was collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135725, Demeton	Region 4
Channel Islands Harbor

LOE ID:

260162

Pollutant:

Demeton

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

USEPA National Recommended Water Quality Criteria lists criterion continuous concentrations for Demeton to protect aquatic life in freshwater and saltwater is 0.1 ug/L.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (Oxn_CI-13).

Temporal Representation:

Data for this waterbody was collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135725, Demeton	Region 4
Channel Islands Harbor

LOE ID:

260159

Pollutant:

Demeton

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

USEPA National Recommended Water Quality Criteria lists criterion continuous concentrations for Demeton to protect aquatic life in freshwater and saltwater is 0.1 ug/L.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (Oxn_CI-11).

Temporal Representation:

Data for this waterbody was collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135725, Demeton	Region 4
Channel Islands Harbor

LOE ID:

260158

Pollutant:

Demeton

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

USEPA National Recommended Water Quality Criteria lists criterion continuous concentrations for Demeton to protect aquatic life in freshwater and saltwater is 0.1 ug/L.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (Oxn_CI-20).

Temporal Representation:

Data for this waterbody was collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135725, Demeton	Region 4
Channel Islands Harbor

LOE ID:

260064

Pollutant:

Demeton

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

USEPA National Recommended Water Quality Criteria lists criterion continuous concentrations for Demeton to protect aquatic life in freshwater and saltwater is 0.1 ug/L.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (Oxn_CI-16).

Temporal Representation:

Data for this waterbody was collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135725, Demeton	Region 4
Channel Islands Harbor

LOE ID:

260062

Pollutant:

Demeton

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

USEPA National Recommended Water Quality Criteria lists criterion continuous concentrations for Demeton to protect aquatic life in freshwater and saltwater is 0.1 ug/L.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (Oxn_CI-17).

Temporal Representation:

Data for this waterbody was collected over the date range 2018-10-08 to 2018-11-29

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135725, Demeton	Region 4
Channel Islands Harbor

LOE ID:

260143

Pollutant:

Demeton

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

USEPA National Recommended Water Quality Criteria lists criterion continuous concentrations for Demeton to protect aquatic life in freshwater and saltwater is 0.1 ug/L.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (Oxn_CI-24).

Temporal Representation:

Data for this waterbody was collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135725, Demeton	Region 4
Channel Islands Harbor

LOE ID:

260142

Pollutant:

Demeton

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

USEPA National Recommended Water Quality Criteria lists criterion continuous concentrations for Demeton to protect aquatic life in freshwater and saltwater is 0.1 ug/L.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (Oxn_CI-14).

Temporal Representation:

Data for this waterbody was collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135725, Demeton	Region 4
Channel Islands Harbor

LOE ID:

260140

Pollutant:

Demeton

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

USEPA National Recommended Water Quality Criteria lists criterion continuous concentrations for Demeton to protect aquatic life in freshwater and saltwater is 0.1 ug/L.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (Oxn_CI-31).

Temporal Representation:

Data for this waterbody was collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135725, Demeton	Region 4
Channel Islands Harbor

LOE ID:

260139

Pollutant:

Demeton

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

USEPA National Recommended Water Quality Criteria lists criterion continuous concentrations for Demeton to protect aquatic life in freshwater and saltwater is 0.1 ug/L.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (Oxn_CI-22).

Temporal Representation:

Data for this waterbody was collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135725, Demeton	Region 4
Channel Islands Harbor

LOE ID:

260046

Pollutant:

Demeton

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

USEPA National Recommended Water Quality Criteria lists criterion continuous concentrations for Demeton to protect aquatic life in freshwater and saltwater is 0.1 ug/L.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (Oxn_CI-15).

Temporal Representation:

Data for this waterbody was collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135725, Demeton	Region 4
Channel Islands Harbor

LOE ID:

260045

Pollutant:

Demeton

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

USEPA National Recommended Water Quality Criteria lists criterion continuous concentrations for Demeton to protect aquatic life in freshwater and saltwater is 0.1 ug/L.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (Oxn_CI-21).

Temporal Representation:

Data for this waterbody was collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135725, Demeton	Region 4
Channel Islands Harbor

LOE ID:

260124

Pollutant:

Demeton

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

USEPA National Recommended Water Quality Criteria lists criterion continuous concentrations for Demeton to protect aquatic life in freshwater and saltwater is 0.1 ug/L.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (Oxn_CI-09).

Temporal Representation:

Data for this waterbody was collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135725, Demeton	Region 4
Channel Islands Harbor

LOE ID:

260215

Pollutant:

Demeton

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

USEPA National Recommended Water Quality Criteria lists criterion continuous concentrations for Demeton to protect aquatic life in freshwater and saltwater is 0.1 ug/L.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (Oxn_CI-03).

Temporal Representation:

Data for this waterbody was collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135725, Demeton	Region 4
Channel Islands Harbor

LOE ID:

260182

Pollutant:

Demeton

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

USEPA National Recommended Water Quality Criteria lists criterion continuous concentrations for Demeton to protect aquatic life in freshwater and saltwater is 0.1 ug/L.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (Oxn_CI-06).

Temporal Representation:

Data for this waterbody was collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135725, Demeton	Region 4
Channel Islands Harbor

LOE ID:

260181

Pollutant:

Demeton

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

USEPA National Recommended Water Quality Criteria lists criterion continuous concentrations for Demeton to protect aquatic life in freshwater and saltwater is 0.1 ug/L.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (Oxn_CI-26).

Temporal Representation:

Data for this waterbody was collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135725, Demeton	Region 4
Channel Islands Harbor

LOE ID:

260179

Pollutant:

Demeton

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

USEPA National Recommended Water Quality Criteria lists criterion continuous concentrations for Demeton to protect aquatic life in freshwater and saltwater is 0.1 ug/L.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (Oxn_CI-12).

Temporal Representation:

Data for this waterbody was collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135725, Demeton	Region 4
Channel Islands Harbor

LOE ID:

260085

Pollutant:

Demeton

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

USEPA National Recommended Water Quality Criteria lists criterion continuous concentrations for Demeton to protect aquatic life in freshwater and saltwater is 0.1 ug/L.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (Oxn_CI-27).

Temporal Representation:

Data for this waterbody was collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135725, Demeton	Region 4
Channel Islands Harbor

LOE ID:

260083

Pollutant:

Demeton

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

USEPA National Recommended Water Quality Criteria lists criterion continuous concentrations for Demeton to protect aquatic life in freshwater and saltwater is 0.1 ug/L.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (Oxn_CI-07).

Temporal Representation:

Data for this waterbody was collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135725, Demeton	Region 4
Channel Islands Harbor

LOE ID:

260105

Pollutant:

Demeton

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

USEPA National Recommended Water Quality Criteria lists criterion continuous concentrations for Demeton to protect aquatic life in freshwater and saltwater is 0.1 ug/L.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (Oxn_CI-08).

Temporal Representation:

Data for this waterbody was collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY


DECISION ID	135644	Region 4
Channel Islands Harbor

Pollutant:	Diazinon
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)(2018)
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status. 3 lines of evidence are available in the administrative record to assess this pollutant. 0 of the 1 sample exceed the GUIDELINE for diazinon in fish tissue. 0 of the 1 sample exceed the GUIDELINE for diazinon in shellfish tissue. 0 of the 30 samples exceed the CRITERIA for diazinon in water. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the CWA section 303(d) List in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. 0 of 1 and 0 of 1 samples exceeded the GUIDELINE and 0 of the 30 samples exceed the CRITERIA, and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.

Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because applicable water quality standards are not being exceeded.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.

Line of Evidence (LOE) for Decision ID 135644, Diazinon	Region 4
Channel Islands Harbor

LOE ID:

260166

Pollutant:

Diazinon

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The chronic criterion for diazinon to protect saltwater aquatic organisms is 0.82 ug/L (EPA-822-R-05-006).

Guideline Reference:

Aquatic Life Ambient Water Quality Criteria for Diazinon

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-07 (Oxn_CI-07_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135644, Diazinon	Region 4
Channel Islands Harbor

LOE ID:

260069

Pollutant:

Diazinon

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The chronic criterion for diazinon to protect saltwater aquatic organisms is 0.82 ug/L (EPA-822-R-05-006).

Guideline Reference:

Aquatic Life Ambient Water Quality Criteria for Diazinon

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-21 (Oxn_CI-21_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-10 and 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135644, Diazinon	Region 4
Channel Islands Harbor

LOE ID:

260146

Pollutant:

Diazinon

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The chronic criterion for diazinon to protect saltwater aquatic organisms is 0.82 ug/L (EPA-822-R-05-006).

Guideline Reference:

Aquatic Life Ambient Water Quality Criteria for Diazinon

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-11 (Oxn_CI-11_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-10 and 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135644, Diazinon	Region 4
Channel Islands Harbor

LOE ID:

260057

Pollutant:

Diazinon

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The chronic criterion for diazinon to protect saltwater aquatic organisms is 0.82 ug/L (EPA-822-R-05-006).

Guideline Reference:

Aquatic Life Ambient Water Quality Criteria for Diazinon

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-23 (Oxn_CI-23_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135644, Diazinon	Region 4
Channel Islands Harbor

LOE ID:

260239

Pollutant:

Diazinon

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The chronic criterion for diazinon to protect saltwater aquatic organisms is 0.82 ug/L (EPA-822-R-05-006).

Guideline Reference:

Aquatic Life Ambient Water Quality Criteria for Diazinon

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-10 (Oxn_CI-10_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-10 and 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135644, Diazinon	Region 4
Channel Islands Harbor

LOE ID:

260238

Pollutant:

Diazinon

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The chronic criterion for diazinon to protect saltwater aquatic organisms is 0.82 ug/L (EPA-822-R-05-006).

Guideline Reference:

Aquatic Life Ambient Water Quality Criteria for Diazinon

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-15 (Oxn_CI-15_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135644, Diazinon	Region 4
Channel Islands Harbor

LOE ID:

260237

Pollutant:

Diazinon

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The chronic criterion for diazinon to protect saltwater aquatic organisms is 0.82 ug/L (EPA-822-R-05-006).

Guideline Reference:

Aquatic Life Ambient Water Quality Criteria for Diazinon

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-18 (Oxn_CI-18_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135644, Diazinon	Region 4
Channel Islands Harbor

LOE ID:

260048

Pollutant:

Diazinon

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The chronic criterion for diazinon to protect saltwater aquatic organisms is 0.82 ug/L (EPA-822-R-05-006).

Guideline Reference:

Aquatic Life Ambient Water Quality Criteria for Diazinon

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-12 (Oxn_CI-12_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-10 and 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135644, Diazinon	Region 4
Channel Islands Harbor

LOE ID:

260323

Pollutant:

Diazinon

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The chronic criterion for diazinon to protect saltwater aquatic organisms is 0.82 ug/L (EPA-822-R-05-006).

Guideline Reference:

Aquatic Life Ambient Water Quality Criteria for Diazinon

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-31 (Oxn_CI-31_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-10 and 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135644, Diazinon	Region 4
Channel Islands Harbor

LOE ID:

260225

Pollutant:

Diazinon

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The chronic criterion for diazinon to protect saltwater aquatic organisms is 0.82 ug/L (EPA-822-R-05-006).

Guideline Reference:

Aquatic Life Ambient Water Quality Criteria for Diazinon

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-14 (Oxn_CI-14_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135644, Diazinon	Region 4
Channel Islands Harbor

LOE ID:

260130

Pollutant:

Diazinon

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The chronic criterion for diazinon to protect saltwater aquatic organisms is 0.82 ug/L (EPA-822-R-05-006).

Guideline Reference:

Aquatic Life Ambient Water Quality Criteria for Diazinon

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-27 (Oxn_CI-27_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135644, Diazinon	Region 4
Channel Islands Harbor

LOE ID:

260221

Pollutant:

Diazinon

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The chronic criterion for diazinon to protect saltwater aquatic organisms is 0.82 ug/L (EPA-822-R-05-006).

Guideline Reference:

Aquatic Life Ambient Water Quality Criteria for Diazinon

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-02 (Oxn_CI-02_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-11-29

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135644, Diazinon	Region 4
Channel Islands Harbor

LOE ID:

82815

Pollutant:

Diazinon

LOE Subgroup:

Pollutant-Tissue

Matrix:

Tissue

Fraction:

Shellfish

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

Shellfish surveys

Data Used to Assess Water Quality:

The sample did not exceed the guideline.

Data Reference:

RWB4 Miscellaneous Ventura Coastal 2006

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The modified OEHHA Fish Contaminant Goal for diazinon in shellfish tissue is 2,300 ppb. This screening level assumes an average body weight of 70 kg and a consumption rate of 21 g/day. (Brodberg, R.K., and G.A. Pollock, 1999; Klasing, S., and R. Brodberg, 2008; USEPA, 2000)

Guideline Reference:

Prevalence of Selected Target Chemical Contaminants in Sport Fish From Two California Lakes: Public health designed screening study. Sacramento, CA: Office of Environmental Health Hazard Assessment

Guideline Reference:

Development of Fish Contaminant Goals and Advisory Tissue Levels for Common Contaminants in California Sport Fish: Chlordane, DDTs, Dieldrin, Methylmercury, PCBs, Selenium, and Toxaphene

Guideline Reference:

Guidance for Assessing Chemical Contaminant Data for Use In Fish Advisories Volume 1: Fish Sampling and Analysis

Spatial Representation:

Data for was collected at one station: Channel Islands Harbor 5 - 410VHCHN5.

Temporal Representation:

Data was collected on a single day 2/28/2007.

Environmental Conditions:

QAPP Information:

Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002

QAPP Information Reference(s):

Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version)

Line of Evidence (LOE) for Decision ID 135644, Diazinon	Region 4
Channel Islands Harbor

LOE ID:

83662

Pollutant:

Diazinon

LOE Subgroup:

Pollutant-Tissue

Matrix:

Tissue

Fraction:

Fish fillet

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

Fish tissue analysis

Data Used to Assess Water Quality:

Data Reference:

RWB4 Miscellaneous Ventura Coastal 2006

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The modified OEHHA Fish Contaminant Goal for diazinon in fish tissue is 1,500 ppb. This screening level assumes an average body weight of 70 kg and a consumption rate of 32 g/day. A cooking reduction factor of 1 is applied for skin-off fillets. (Klasing, S., and R. Brodberg, 2008; USEPA, 2000)

Guideline Reference:

Development of Fish Contaminant Goals and Advisory Tissue Levels for Common Contaminants in California Sport Fish: Chlordane, DDTs, Dieldrin, Methylmercury, PCBs, Selenium, and Toxaphene

Guideline Reference:

Guidance for Assessing Chemical Contaminant Data for Use In Fish Advisories Volume 1: Fish Sampling and Analysis

Spatial Representation:

Samples are collected by hand from three sub-locations (A,B,C) from site 410VHCHN5. The three samples per site were averaged prior to assessment.

Temporal Representation:

Representative samples of locally abundant species were collected on February 28, 2007.

Environmental Conditions:

QAPP Information:

Samples were collected as part of the State Water Board's Surface Water Ambient Monitoring Program.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 135644, Diazinon	Region 4
Channel Islands Harbor

LOE ID:

83661

Pollutant:

Diazinon

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

State Water Board staff assessed 4 data for Channel Islands Harbor to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Diazinon.

Data Reference:

RWB4 Miscellaneous Ventura Coastal 2006

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The chronic criterion for diazinon to protect saltwater aquatic organisms is 0.82 ug/L (EPA-822-R-05-006).

Guideline Reference:

Fact Sheet: Final Recommended Aquatic Life Ambient Water Quality Criteria for Diazinon

Spatial Representation:

Data for this line of evidence for Channel Islands Harbor was collected at 1 monitoring site [ Channel Islands Harbor 5 - 410VHCHN5]

Temporal Representation:

Data was collected on a single day 10/12/2006.

Environmental Conditions:

Staff is not aware of any special conditions that might affect interpretation of the data.

QAPP Information:

The SWAMP QAPP (2008) was followed.

QAPP Information Reference(s):

Surface Water Ambient Monitoring Program Quality Assurance Program Plan

Line of Evidence (LOE) for Decision ID 135644, Diazinon	Region 4
Channel Islands Harbor

LOE ID:

260184

Pollutant:

Diazinon

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The chronic criterion for diazinon to protect saltwater aquatic organisms is 0.82 ug/L (EPA-822-R-05-006).

Guideline Reference:

Aquatic Life Ambient Water Quality Criteria for Diazinon

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-19 (Oxn_CI-19_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-10 and 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135644, Diazinon	Region 4
Channel Islands Harbor

LOE ID:

260276

Pollutant:

Diazinon

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The chronic criterion for diazinon to protect saltwater aquatic organisms is 0.82 ug/L (EPA-822-R-05-006).

Guideline Reference:

Aquatic Life Ambient Water Quality Criteria for Diazinon

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-16 (Oxn_CI-16_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135644, Diazinon	Region 4
Channel Islands Harbor

LOE ID:

260263

Pollutant:

Diazinon

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The chronic criterion for diazinon to protect saltwater aquatic organisms is 0.82 ug/L (EPA-822-R-05-006).

Guideline Reference:

Aquatic Life Ambient Water Quality Criteria for Diazinon

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-24 (Oxn_CI-24_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135644, Diazinon	Region 4
Channel Islands Harbor

LOE ID:

260167

Pollutant:

Diazinon

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The chronic criterion for diazinon to protect saltwater aquatic organisms is 0.82 ug/L (EPA-822-R-05-006).

Guideline Reference:

Aquatic Life Ambient Water Quality Criteria for Diazinon

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-08 (Oxn_CI-08_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-10 and 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135644, Diazinon	Region 4
Channel Islands Harbor

LOE ID:

260254

Pollutant:

Diazinon

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The chronic criterion for diazinon to protect saltwater aquatic organisms is 0.82 ug/L (EPA-822-R-05-006).

Guideline Reference:

Aquatic Life Ambient Water Quality Criteria for Diazinon

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-20 (Oxn_CI-20_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135644, Diazinon	Region 4
Channel Islands Harbor

LOE ID:

260163

Pollutant:

Diazinon

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The chronic criterion for diazinon to protect saltwater aquatic organisms is 0.82 ug/L (EPA-822-R-05-006).

Guideline Reference:

Aquatic Life Ambient Water Quality Criteria for Diazinon

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-26 (Oxn_CI-26_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-10 and 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135644, Diazinon	Region 4
Channel Islands Harbor

LOE ID:

260256

Pollutant:

Diazinon

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The chronic criterion for diazinon to protect saltwater aquatic organisms is 0.82 ug/L (EPA-822-R-05-006).

Guideline Reference:

Aquatic Life Ambient Water Quality Criteria for Diazinon

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-13 (Oxn_CI-13_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135644, Diazinon	Region 4
Channel Islands Harbor

LOE ID:

260277

Pollutant:

Diazinon

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The chronic criterion for diazinon to protect saltwater aquatic organisms is 0.82 ug/L (EPA-822-R-05-006).

Guideline Reference:

Aquatic Life Ambient Water Quality Criteria for Diazinon

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-09 (Oxn_CI-09_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-10 and 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135644, Diazinon	Region 4
Channel Islands Harbor

LOE ID:

260282

Pollutant:

Diazinon

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The chronic criterion for diazinon to protect saltwater aquatic organisms is 0.82 ug/L (EPA-822-R-05-006).

Guideline Reference:

Aquatic Life Ambient Water Quality Criteria for Diazinon

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-22 (Oxn_CI-22_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-10 and 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135644, Diazinon	Region 4
Channel Islands Harbor

LOE ID:

260285

Pollutant:

Diazinon

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The chronic criterion for diazinon to protect saltwater aquatic organisms is 0.82 ug/L (EPA-822-R-05-006).

Guideline Reference:

Aquatic Life Ambient Water Quality Criteria for Diazinon

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-25 (Oxn_CI-25_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135644, Diazinon	Region 4
Channel Islands Harbor

LOE ID:

260297

Pollutant:

Diazinon

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The chronic criterion for diazinon to protect saltwater aquatic organisms is 0.82 ug/L (EPA-822-R-05-006).

Guideline Reference:

Aquatic Life Ambient Water Quality Criteria for Diazinon

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-03 (Oxn_CI-03_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-10 and 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135644, Diazinon	Region 4
Channel Islands Harbor

LOE ID:

260298

Pollutant:

Diazinon

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The chronic criterion for diazinon to protect saltwater aquatic organisms is 0.82 ug/L (EPA-822-R-05-006).

Guideline Reference:

Aquatic Life Ambient Water Quality Criteria for Diazinon

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-17 (Oxn_CI-17_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-11-29

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135644, Diazinon	Region 4
Channel Islands Harbor

LOE ID:

260033

Pollutant:

Diazinon

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The chronic criterion for diazinon to protect saltwater aquatic organisms is 0.82 ug/L (EPA-822-R-05-006).

Guideline Reference:

Aquatic Life Ambient Water Quality Criteria for Diazinon

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-06 (Oxn_CI-06_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-10 and 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY


DECISION ID	135645	Region 4
Channel Islands Harbor

Pollutant:	Dibenz[a,h]anthracene
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)(2018)
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.

Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.

Line of Evidence (LOE) for Decision ID 135645, Dibenz[a,h]anthracene	Region 4
Channel Islands Harbor

LOE ID:

83620

Pollutant:

Toxicity

LOE Subgroup:

Toxicity

Matrix:

Sediment

Fraction:

None

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

TOXICITY TESTING

Data Used to Assess Water Quality:

Data Reference:

RWB4 Miscellaneous Ventura Coastal 2006

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Revised approach to toxicity test acceptability criteria using a statistical performance assessment. Environmental Toxicology and Chemistry, vol. 16, No. 6, pp 1322¿1329

Spatial Representation:

The samples were collected at stations 410VHCHN1, 410VHCHN2, 410VHCHN3, 410VHCHN4, and 410VHCHN5.

Temporal Representation:

The samples were collected in October 2006.

Environmental Conditions:

QAPP Information:

Data quality is good. Data results were recorded in the SWAMP database and follwed SWAMP protocols.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 135645, Dibenz[a,h]anthracene	Region 4
Channel Islands Harbor

LOE ID:

260094

Pollutant:

Dibenz[a,h]anthracene

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Dibenz(a,h)anthracene. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dibenzo(a, h)anthracene criterion for the protection of human health from consumption of organisms only is 0.049 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-17 (Oxn_CI-17_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2019-12-04 to 2019-12-04

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135645, Dibenz[a,h]anthracene	Region 4
Channel Islands Harbor

LOE ID:

248147

Pollutant:

Dibenz[a,h]anthracene

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The evaluation guideline for dibenz(a,h)anthracene is the Effects Range Median (ERM) value and is 260 PPB (ng/g) dry weight (Long et al., 1995).

Guideline Reference:

Incidence of adverse biological effects within ranges of chemical concentrations in marine and estuary sediments. Environmental Management. 19, (1): 81-97

Spatial Representation:

Data were collected from 1 station(s). Station Code(s): 410CHN003 (Channel Islands Harbor CI3).

Temporal Representation:

Data for this waterbody were collected over the date range 2017-05-24 to 2017-05-24

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 135645, Dibenz[a,h]anthracene	Region 4
Channel Islands Harbor

LOE ID:

248162

Pollutant:

Dibenz[a,h]anthracene

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The evaluation guideline for dibenz(a,h)anthracene is the Effects Range Median (ERM) value and is 260 PPB (ng/g) dry weight (Long et al., 1995).

Guideline Reference:

Incidence of adverse biological effects within ranges of chemical concentrations in marine and estuary sediments. Environmental Management. 19, (1): 81-97

Spatial Representation:

Data were collected from 1 station(s). Station Code(s): 410CHN004 (Channel Islands Harbor CI4).

Temporal Representation:

Data for this waterbody were collected over the date range 2017-05-24 to 2017-05-24

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 135645, Dibenz[a,h]anthracene	Region 4
Channel Islands Harbor

LOE ID:

248306

Pollutant:

Dibenz[a,h]anthracene

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The evaluation guideline for dibenz(a,h)anthracene is the Effects Range Median (ERM) value and is 260 PPB (ng/g) dry weight (Long et al., 1995).

Guideline Reference:

Incidence of adverse biological effects within ranges of chemical concentrations in marine and estuary sediments. Environmental Management. 19, (1): 81-97

Spatial Representation:

Data were collected from 1 station(s). Station Code(s): 410CHN001 (Channel Islands Harbor CI1).

Temporal Representation:

Data for this waterbody were collected over the date range 2017-05-24 to 2017-05-24

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 135645, Dibenz[a,h]anthracene	Region 4
Channel Islands Harbor

LOE ID:

247959

Pollutant:

Dibenz[a,h]anthracene

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The evaluation guideline for dibenz(a,h)anthracene is the Effects Range Median (ERM) value and is 260 PPB (ng/g) dry weight (Long et al., 1995).

Guideline Reference:

Incidence of adverse biological effects within ranges of chemical concentrations in marine and estuary sediments. Environmental Management. 19, (1): 81-97

Spatial Representation:

Data were collected from 1 station(s). Station Code(s): 410CHN005 (Channel Islands Harbor CI5).

Temporal Representation:

Data for this waterbody were collected over the date range 2017-05-24 to 2017-05-24

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 135645, Dibenz[a,h]anthracene	Region 4
Channel Islands Harbor

LOE ID:

83664

Pollutant:

Dibenz[a,h]anthracene

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

State Water Board staff assessed 4 data for Channel Islands Harbor to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Dibenzo(a, h)anthracene.

Data Reference:

RWB4 Miscellaneous Ventura Coastal 2006

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

The Dibenzo(a, h)anthracene criteria for the protection of human health from consumption of organisms only is 0.049 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Data for this line of evidence for Channel Islands Harbor was collected at 1 monitoring site [ Channel Islands Harbor 5 - 410VHCHN5]

Temporal Representation:

Data was collected on a single day 10/12/2006.

Environmental Conditions:

Staff is not aware of any special conditions that might affect interpretation of the data.

QAPP Information:

The SWAMP QAPP (2008) was followed.

QAPP Information Reference(s):

Surface Water Ambient Monitoring Program Quality Assurance Program Plan

Line of Evidence (LOE) for Decision ID 135645, Dibenz[a,h]anthracene	Region 4
Channel Islands Harbor

LOE ID:

83663

Pollutant:

Dibenz[a,h]anthracene

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Boardstaff assessed SWAMP data for Channel Islands Harbor to determine beneficial use support and results are as follows: 0 of 5 samples exceed the criterion for Dibenzo(a, h)anthracene.

Data Reference:

RWB4 Miscellaneous Ventura Coastal 2006

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

In marine and estuarine sediments the effects range median (predictive of sediment toxicity for sediment-dwelling organisms) for Dibenzo(a, h)anthracene is 260 ng/g dry weight (Long et al., 1995).

Guideline Reference:

Incidence of adverse biological effects within ranges of chemical concentrations in marine and estuary sediments. Environmental Management. 19, (1): 81-97

Spatial Representation:

Temporal Representation:

Data was collected over the time period 10/11/2006-10/12/2006.

Environmental Conditions:

Staff is not aware of any special conditions that might affect interpretation of the data.

QAPP Information:

2002 QAMP (Quality Assurance Management Plan) for the State of California's Surface Water Ambient Monitoring Program

QAPP Information Reference(s):

Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version)

Line of Evidence (LOE) for Decision ID 135645, Dibenz[a,h]anthracene	Region 4
Channel Islands Harbor

LOE ID:

248001

Pollutant:

Dibenz[a,h]anthracene

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The evaluation guideline for dibenz(a,h)anthracene is the Effects Range Median (ERM) value and is 260 PPB (ng/g) dry weight (Long et al., 1995).

Guideline Reference:

Incidence of adverse biological effects within ranges of chemical concentrations in marine and estuary sediments. Environmental Management. 19, (1): 81-97

Spatial Representation:

Data were collected from 1 station(s). Station Code(s): 410CHN002 (Channel Islands Harbor CI2).

Temporal Representation:

Data for this waterbody were collected over the date range 2017-05-24 to 2017-05-24

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.


DECISION ID	135647	Region 4
Channel Islands Harbor

Pollutant:	Dibutyl phthalate
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.

Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.

Line of Evidence (LOE) for Decision ID 135647, Dibutyl phthalate	Region 4
Channel Islands Harbor

LOE ID:

260234

Pollutant:

Dibutyl phthalate

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The di-n-butyl phthalate criteria for the protection of human health from the consumption of organisms is 12000 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-17 (Oxn_CI-17_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2019-12-04 and 2019-12-04

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY


DECISION ID	135648	Region 4
Channel Islands Harbor

Pollutant:	Dichlorobromomethane
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.

Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.

Line of Evidence (LOE) for Decision ID 135648, Dichlorobromomethane	Region 4
Channel Islands Harbor

LOE ID:

257894

Pollutant:

Dichlorobromomethane

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dichlorobromomethane criterion for the protection of human health from consumption of organisms only is 46 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-17 (Oxn_CI-17_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2019-12-04 and 2019-12-04

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY


DECISION ID	135649	Region 4
Channel Islands Harbor

Pollutant:	Dichloromethane
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.

Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.

Line of Evidence (LOE) for Decision ID 135649, Dichloromethane	Region 4
Channel Islands Harbor

LOE ID:

263507

Pollutant:

Dichloromethane

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dichloromethane (methylene chloride) criterion for the protection of human health from consumption of organisms only is 1,600 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-17 (Oxn_CI-17_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2019-12-04 and 2019-12-04

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY


DECISION ID	135651	Region 4
Channel Islands Harbor

Pollutant:	Dieldrin
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)(2018)
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence are necessary to assess listing status. 5 lines of evidence are available in the administrative record to assess this pollutant. 1 of 1 sample exceeded the criteria for dieldrin in fish tissue. 1 of 1 sample exceeded the criteria for dieldrin in shellfish tissue. 0 of 0 sample exceeded the COMM criteria for dieldrin in water. 0 of 1 sample exceeded the MAR criteria for dieldrin in water . 0 of 10 samples exceeded the criteria for dieldrin in sediment. Based on the readily available data and information, the weight of evidence indicates that there is insufficient justification for placing this water segment-pollutant combination on the CWA section 303(d) List. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. 1 of 1, 1 of 1, 0 of 0, 0 of 1 and 0 of 10 samples exceeded the CRITERIA and this sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is fully supported using table 3.1. 4. Pursuant to SECTION 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.

Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.

Line of Evidence (LOE) for Decision ID 135651, Dieldrin	Region 4
Channel Islands Harbor

LOE ID:

260452

Pollutant:

Dieldrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Dieldrin. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dieldrin criterion for the protection of human health from consumption of organisms only is 0.00014 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-26 (Oxn_CI-26_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135651, Dieldrin	Region 4
Channel Islands Harbor

LOE ID:

260549

Pollutant:

Dieldrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Dieldrin. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dieldrin criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.0019 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-19 (Oxn_CI-19_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135651, Dieldrin	Region 4
Channel Islands Harbor

LOE ID:

260461

Pollutant:

Dieldrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Dieldrin. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dieldrin criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.0019 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-02 (Oxn_CI-02_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-11-29

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135651, Dieldrin	Region 4
Channel Islands Harbor

LOE ID:

260462

Pollutant:

Dieldrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Dieldrin. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dieldrin criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.0019 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-08 (Oxn_CI-08_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135651, Dieldrin	Region 4
Channel Islands Harbor

LOE ID:

260526

Pollutant:

Dieldrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Dieldrin. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dieldrin criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.0019 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-13 (Oxn_CI-13_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135651, Dieldrin	Region 4
Channel Islands Harbor

LOE ID:

260531

Pollutant:

Dieldrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Dieldrin. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dieldrin criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.0019 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-16 (Oxn_CI-16_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135651, Dieldrin	Region 4
Channel Islands Harbor

LOE ID:

260468

Pollutant:

Dieldrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Dieldrin. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dieldrin criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.0019 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-21 (Oxn_CI-21_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135651, Dieldrin	Region 4
Channel Islands Harbor

LOE ID:

260470

Pollutant:

Dieldrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Dieldrin. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dieldrin criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.0019 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-15 (Oxn_CI-15_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135651, Dieldrin	Region 4
Channel Islands Harbor

LOE ID:

260474

Pollutant:

Dieldrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Dieldrin. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dieldrin criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.0019 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-06 (Oxn_CI-06_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135651, Dieldrin	Region 4
Channel Islands Harbor

LOE ID:

260481

Pollutant:

Dieldrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Dieldrin. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dieldrin criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.0019 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-14 (Oxn_CI-14_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135651, Dieldrin	Region 4
Channel Islands Harbor

LOE ID:

260484

Pollutant:

Dieldrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Dieldrin. Although a total of 4 samples were collected, 4 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dieldrin criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.0019 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-17 (Oxn_CI-17_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2019-12-04

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135651, Dieldrin	Region 4
Channel Islands Harbor

LOE ID:

260507

Pollutant:

Dieldrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Dieldrin. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dieldrin criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.0019 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-24 (Oxn_CI-24_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135651, Dieldrin	Region 4
Channel Islands Harbor

LOE ID:

260429

Pollutant:

Dieldrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Dieldrin. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dieldrin criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.0019 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-31 (Oxn_CI-31_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135651, Dieldrin	Region 4
Channel Islands Harbor

LOE ID:

260430

Pollutant:

Dieldrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Dieldrin. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dieldrin criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.0019 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-10 (Oxn_CI-10_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135651, Dieldrin	Region 4
Channel Islands Harbor

LOE ID:

260345

Pollutant:

Dieldrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Dieldrin. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dieldrin criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.0019 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-27 (Oxn_CI-27_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135651, Dieldrin	Region 4
Channel Islands Harbor

LOE ID:

260346

Pollutant:

Dieldrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Dieldrin. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dieldrin criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.0019 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-07 (Oxn_CI-07_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135651, Dieldrin	Region 4
Channel Islands Harbor

LOE ID:

260348

Pollutant:

Dieldrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Dieldrin. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dieldrin criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.0019 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-09 (Oxn_CI-09_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135651, Dieldrin	Region 4
Channel Islands Harbor

LOE ID:

248258

Pollutant:

Dieldrin

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

In marine and estuarine sediments the effects range median (predictive of sediment toxicity for sediment-dwelling organisms) for Dieldrin is 8 ng/g dry weight (Long et al., 1995).

Guideline Reference:

Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278

Spatial Representation:

Data were collected from 1 station(s). Station Code(s): 410CHN001 (Channel Islands Harbor CI1).

Temporal Representation:

Data for this waterbody were collected over the date range 2017-05-24 to 2017-05-24

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 135651, Dieldrin	Region 4
Channel Islands Harbor

LOE ID:

248272

Pollutant:

Dieldrin

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

In marine and estuarine sediments the effects range median (predictive of sediment toxicity for sediment-dwelling organisms) for Dieldrin is 8 ng/g dry weight (Long et al., 1995).

Guideline Reference:

Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278

Spatial Representation:

Data were collected from 1 station(s). Station Code(s): 410CHN003 (Channel Islands Harbor CI3).

Temporal Representation:

Data for this waterbody were collected over the date range 2017-05-24 to 2017-05-24

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 135651, Dieldrin	Region 4
Channel Islands Harbor

LOE ID:

248197

Pollutant:

Dieldrin

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

In marine and estuarine sediments the effects range median (predictive of sediment toxicity for sediment-dwelling organisms) for Dieldrin is 8 ng/g dry weight (Long et al., 1995).

Guideline Reference:

Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278

Spatial Representation:

Data were collected from 1 station(s). Station Code(s): 410CHN002 (Channel Islands Harbor CI2).

Temporal Representation:

Data for this waterbody were collected over the date range 2017-05-24 to 2017-05-24

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 135651, Dieldrin	Region 4
Channel Islands Harbor

LOE ID:

248114

Pollutant:

Dieldrin

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

In marine and estuarine sediments the effects range median (predictive of sediment toxicity for sediment-dwelling organisms) for Dieldrin is 8 ng/g dry weight (Long et al., 1995).

Guideline Reference:

Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278

Spatial Representation:

Data were collected from 1 station(s). Station Code(s): 410CHN004 (Channel Islands Harbor CI4).

Temporal Representation:

Data for this waterbody were collected over the date range 2017-05-24 to 2017-05-24

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 135651, Dieldrin	Region 4
Channel Islands Harbor

LOE ID:

248211

Pollutant:

Dieldrin

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

In marine and estuarine sediments the effects range median (predictive of sediment toxicity for sediment-dwelling organisms) for Dieldrin is 8 ng/g dry weight (Long et al., 1995).

Guideline Reference:

Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278

Spatial Representation:

Data were collected from 1 station(s). Station Code(s): 410CHN005 (Channel Islands Harbor CI5).

Temporal Representation:

Data for this waterbody were collected over the date range 2017-05-24 to 2017-05-24

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 135651, Dieldrin	Region 4
Channel Islands Harbor

LOE ID:

260565

Pollutant:

Dieldrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Dieldrin. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dieldrin criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.0019 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-11 (Oxn_CI-11_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135651, Dieldrin	Region 4
Channel Islands Harbor

LOE ID:

260571

Pollutant:

Dieldrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Dieldrin. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dieldrin criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.0019 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-20 (Oxn_CI-20_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135651, Dieldrin	Region 4
Channel Islands Harbor

LOE ID:

83620

Pollutant:

Toxicity

LOE Subgroup:

Toxicity

Matrix:

Sediment

Fraction:

None

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

TOXICITY TESTING

Data Used to Assess Water Quality:

Data Reference:

RWB4 Miscellaneous Ventura Coastal 2006

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Revised approach to toxicity test acceptability criteria using a statistical performance assessment. Environmental Toxicology and Chemistry, vol. 16, No. 6, pp 1322¿1329

Spatial Representation:

The samples were collected at stations 410VHCHN1, 410VHCHN2, 410VHCHN3, 410VHCHN4, and 410VHCHN5.

Temporal Representation:

The samples were collected in October 2006.

Environmental Conditions:

QAPP Information:

Data quality is good. Data results were recorded in the SWAMP database and follwed SWAMP protocols.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 135651, Dieldrin	Region 4
Channel Islands Harbor

LOE ID:

260635

Pollutant:

Dieldrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Dieldrin. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dieldrin criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.0019 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-23 (Oxn_CI-23_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135651, Dieldrin	Region 4
Channel Islands Harbor

LOE ID:

260544

Pollutant:

Dieldrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Dieldrin. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dieldrin criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.0019 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-18 (Oxn_CI-18_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135651, Dieldrin	Region 4
Channel Islands Harbor

LOE ID:

260545

Pollutant:

Dieldrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Dieldrin. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dieldrin criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.0019 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-22 (Oxn_CI-22_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135651, Dieldrin	Region 4
Channel Islands Harbor

LOE ID:

260552

Pollutant:

Dieldrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Dieldrin. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dieldrin criterion for the protection of human health from consumption of organisms only is 0.00014 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-14 (Oxn_CI-14_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135651, Dieldrin	Region 4
Channel Islands Harbor

LOE ID:

260573

Pollutant:

Dieldrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Dieldrin. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dieldrin criterion for the protection of human health from consumption of organisms only is 0.00014 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-31 (Oxn_CI-31_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135651, Dieldrin	Region 4
Channel Islands Harbor

LOE ID:

260575

Pollutant:

Dieldrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Dieldrin. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dieldrin criterion for the protection of human health from consumption of organisms only is 0.00014 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-16 (Oxn_CI-16_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135651, Dieldrin	Region 4
Channel Islands Harbor

LOE ID:

260578

Pollutant:

Dieldrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Dieldrin. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dieldrin criterion for the protection of human health from consumption of organisms only is 0.00014 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-13 (Oxn_CI-13_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135651, Dieldrin	Region 4
Channel Islands Harbor

LOE ID:

260605

Pollutant:

Dieldrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Dieldrin. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dieldrin criterion for the protection of human health from consumption of organisms only is 0.00014 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-22 (Oxn_CI-22_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135651, Dieldrin	Region 4
Channel Islands Harbor

LOE ID:

260625

Pollutant:

Dieldrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Dieldrin. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dieldrin criterion for the protection of human health from consumption of organisms only is 0.00014 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-11 (Oxn_CI-11_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135651, Dieldrin	Region 4
Channel Islands Harbor

LOE ID:

260535

Pollutant:

Dieldrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Dieldrin. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dieldrin criterion for the protection of human health from consumption of organisms only is 0.00014 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-15 (Oxn_CI-15_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135651, Dieldrin	Region 4
Channel Islands Harbor

LOE ID:

260536

Pollutant:

Dieldrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Dieldrin. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dieldrin criterion for the protection of human health from consumption of organisms only is 0.00014 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-08 (Oxn_CI-08_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135651, Dieldrin	Region 4
Channel Islands Harbor

LOE ID:

83668

Pollutant:

Dieldrin

LOE Subgroup:

Pollutant-Tissue

Matrix:

Tissue

Fraction:

Fish fillet

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

Fish tissue analysis

Data Used to Assess Water Quality:

Data Reference:

RWB4 Miscellaneous Ventura Coastal 2006

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The modified OEHHA Fish Contaminant Goal for dieldrin in fish tissue is 0.32 ppb. This screening level assumes an average body weight of 70 kg and a consumption rate of 32 g/day for a 30 year exposure over a 70-year lifetime. This constituent is a carcinogen therefore the risk level is set to one in a million. A cooking reduction factor of 1 is applied for skin-off fillets. (Klasing, S., and R. Brodberg, 2008)

Guideline Reference:

Development of Fish Contaminant Goals and Advisory Tissue Levels for Common Contaminants in California Sport Fish: Chlordane, DDTs, Dieldrin, Methylmercury, PCBs, Selenium, and Toxaphene

Spatial Representation:

Samples are collected by hand from three sub-locations (A,B,C) from site 410VHCHN5. The three samples per site were averaged prior to assessment.

Temporal Representation:

Representative samples of locally abundant species were collected on February 28, 2007.

Environmental Conditions:

QAPP Information:

Samples were collected as part of the State Water Board's Surface Water Ambient Monitoring Program.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 135651, Dieldrin	Region 4
Channel Islands Harbor

LOE ID:

82783

Pollutant:

Dieldrin

LOE Subgroup:

Pollutant-Tissue

Matrix:

Tissue

Fraction:

Shellfish

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

Shellfish surveys

Data Used to Assess Water Quality:

The one sample exceeded the guideline.

Data Reference:

RWB4 Miscellaneous Ventura Coastal 2006

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The modified OEHHA Fish Contaminant Goal for dieldrin in shellfish tissue is 0.49 ppb. This screening level assumes an average body weight of 70 kg and a consumption rate of 21 g/day for a 30 year exposure over a 70-year lifetime. This constituent is a carcinogen therefore the risk level is set to one in a million. (Brodberg, R.K., and G.A. Pollock, 1999; Klasing, S., and R. Brodberg, 2008)

Guideline Reference:

Prevalence of Selected Target Chemical Contaminants in Sport Fish From Two California Lakes: Public health designed screening study. Sacramento, CA: Office of Environmental Health Hazard Assessment

Guideline Reference:

Development of Fish Contaminant Goals and Advisory Tissue Levels for Common Contaminants in California Sport Fish: Chlordane, DDTs, Dieldrin, Methylmercury, PCBs, Selenium, and Toxaphene

Spatial Representation:

Data for was collected at one station: Channel Islands Harbor 5 - 410VHCHN5.

Temporal Representation:

Data was collected on a single day 2/28/2007.

Environmental Conditions:

QAPP Information:

Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002

QAPP Information Reference(s):

Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version)

Line of Evidence (LOE) for Decision ID 135651, Dieldrin	Region 4
Channel Islands Harbor

LOE ID:

83667

Pollutant:

Dieldrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

State Water Board staff assessed 4 data for Channel Islands Harbor to determine beneficial use support and results are as follows: 0 of 0 samples exceed the criterion for Dieldrin. One sample result(s) were not used in the assessment because the laboratory data reporting limit(s) was above the objective and therefore the results could not be quantified with the level of certainty required by the Listing Policy.

Data Reference:

RWB4 Miscellaneous Ventura Coastal 2006

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

The Dieldrin criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is 0.056 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Data for this line of evidence for Channel Islands Harbor was collected at 1 monitoring site [ Channel Islands Harbor 5 - 410VHCHN5]

Temporal Representation:

Data was collected on a single day 10/12/2006.

Environmental Conditions:

Staff is not aware of any special conditions that might affect interpretation of the data.

QAPP Information:

The SWAMP QAPP (2008) was followed.

QAPP Information Reference(s):

Surface Water Ambient Monitoring Program Quality Assurance Program Plan

Line of Evidence (LOE) for Decision ID 135651, Dieldrin	Region 4
Channel Islands Harbor

LOE ID:

83666

Pollutant:

Dieldrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

State Water Board staff assessed 4 data for Channel Islands Harbor to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Dieldrin.

Data Reference:

RWB4 Miscellaneous Ventura Coastal 2006

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

The Dieldrin criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saltwater is 0.0019 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Data for this line of evidence for Channel Islands Harbor was collected at 1 monitoring site [ Channel Islands Harbor 5 - 410VHCHN5]

Temporal Representation:

Data was collected on a single day 10/12/2006.

Environmental Conditions:

Staff is not aware of any special conditions that might affect interpretation of the data.

QAPP Information:

The SWAMP QAPP (2008) was followed.

QAPP Information Reference(s):

Surface Water Ambient Monitoring Program Quality Assurance Program Plan

Line of Evidence (LOE) for Decision ID 135651, Dieldrin	Region 4
Channel Islands Harbor

LOE ID:

83665

Pollutant:

Dieldrin

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Boardstaff assessed SWAMP data for Channel Islands Harbor to determine beneficial use support and results are as follows: 0 of 5 samples exceed the criterion for Dieldrin.

Data Reference:

RWB4 Miscellaneous Ventura Coastal 2006

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

In marine and estuarine sediments the effects range median (predictive of sediment toxicity for sediment-dwelling organisms) for Dieldrin is 8 ng/g dry weight (Long et al., 1995).

Guideline Reference:

Incidence of adverse biological effects within ranges of chemical concentrations in marine and estuary sediments. Environmental Management. 19, (1): 81-97

Spatial Representation:

Temporal Representation:

Data was collected over the time period 10/11/2006-10/12/2006.

Environmental Conditions:

Staff is not aware of any special conditions that might affect interpretation of the data.

QAPP Information:

2002 QAMP (Quality Assurance Management Plan) for the State of California's Surface Water Ambient Monitoring Program

QAPP Information Reference(s):

Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version)

Line of Evidence (LOE) for Decision ID 135651, Dieldrin	Region 4
Channel Islands Harbor

LOE ID:

260574

Pollutant:

Dieldrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Dieldrin. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dieldrin criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.0019 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-25 (Oxn_CI-25_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135651, Dieldrin	Region 4
Channel Islands Harbor

LOE ID:

260590

Pollutant:

Dieldrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Dieldrin. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dieldrin criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.0019 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-12 (Oxn_CI-12_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135651, Dieldrin	Region 4
Channel Islands Harbor

LOE ID:

260607

Pollutant:

Dieldrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Dieldrin. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dieldrin criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.0019 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-03 (Oxn_CI-03_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135651, Dieldrin	Region 4
Channel Islands Harbor

LOE ID:

260532

Pollutant:

Dieldrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Dieldrin. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dieldrin criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.0019 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-26 (Oxn_CI-26_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135651, Dieldrin	Region 4
Channel Islands Harbor

LOE ID:

260631

Pollutant:

Dieldrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Dieldrin. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dieldrin criterion for the protection of human health from consumption of organisms only is 0.00014 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-10 (Oxn_CI-10_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135651, Dieldrin	Region 4
Channel Islands Harbor

LOE ID:

260373

Pollutant:

Dieldrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Dieldrin. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dieldrin criterion for the protection of human health from consumption of organisms only is 0.00014 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-23 (Oxn_CI-23_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135651, Dieldrin	Region 4
Channel Islands Harbor

LOE ID:

260465

Pollutant:

Dieldrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Dieldrin. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dieldrin criterion for the protection of human health from consumption of organisms only is 0.00014 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-21 (Oxn_CI-21_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135651, Dieldrin	Region 4
Channel Islands Harbor

LOE ID:

260475

Pollutant:

Dieldrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Dieldrin. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dieldrin criterion for the protection of human health from consumption of organisms only is 0.00014 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-25 (Oxn_CI-25_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135651, Dieldrin	Region 4
Channel Islands Harbor

LOE ID:

260391

Pollutant:

Dieldrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Dieldrin. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dieldrin criterion for the protection of human health from consumption of organisms only is 0.00014 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-24 (Oxn_CI-24_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135651, Dieldrin	Region 4
Channel Islands Harbor

LOE ID:

260393

Pollutant:

Dieldrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Dieldrin. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dieldrin criterion for the protection of human health from consumption of organisms only is 0.00014 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-19 (Oxn_CI-19_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135651, Dieldrin	Region 4
Channel Islands Harbor

LOE ID:

260394

Pollutant:

Dieldrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Dieldrin. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dieldrin criterion for the protection of human health from consumption of organisms only is 0.00014 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-18 (Oxn_CI-18_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135651, Dieldrin	Region 4
Channel Islands Harbor

LOE ID:

260491

Pollutant:

Dieldrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Dieldrin. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dieldrin criterion for the protection of human health from consumption of organisms only is 0.00014 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-20 (Oxn_CI-20_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135651, Dieldrin	Region 4
Channel Islands Harbor

LOE ID:

260411

Pollutant:

Dieldrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Dieldrin. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dieldrin criterion for the protection of human health from consumption of organisms only is 0.00014 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-02 (Oxn_CI-02_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-11-29

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135651, Dieldrin	Region 4
Channel Islands Harbor

LOE ID:

260494

Pollutant:

Dieldrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Dieldrin. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dieldrin criterion for the protection of human health from consumption of organisms only is 0.00014 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-07 (Oxn_CI-07_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135651, Dieldrin	Region 4
Channel Islands Harbor

LOE ID:

260504

Pollutant:

Dieldrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Dieldrin. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dieldrin criterion for the protection of human health from consumption of organisms only is 0.00014 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-12 (Oxn_CI-12_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135651, Dieldrin	Region 4
Channel Islands Harbor

LOE ID:

260330

Pollutant:

Dieldrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Dieldrin. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dieldrin criterion for the protection of human health from consumption of organisms only is 0.00014 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-27 (Oxn_CI-27_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135651, Dieldrin	Region 4
Channel Islands Harbor

LOE ID:

260333

Pollutant:

Dieldrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Dieldrin. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dieldrin criterion for the protection of human health from consumption of organisms only is 0.00014 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-06 (Oxn_CI-06_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135651, Dieldrin	Region 4
Channel Islands Harbor

LOE ID:

260349

Pollutant:

Dieldrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Dieldrin. Although a total of 4 samples were collected, 4 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dieldrin criterion for the protection of human health from consumption of organisms only is 0.00014 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-17 (Oxn_CI-17_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2019-12-04

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135651, Dieldrin	Region 4
Channel Islands Harbor

LOE ID:

260350

Pollutant:

Dieldrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Dieldrin. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dieldrin criterion for the protection of human health from consumption of organisms only is 0.00014 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-03 (Oxn_CI-03_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135651, Dieldrin	Region 4
Channel Islands Harbor

LOE ID:

260450

Pollutant:

Dieldrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Dieldrin. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dieldrin criterion for the protection of human health from consumption of organisms only is 0.00014 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-09 (Oxn_CI-09_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY


DECISION ID	135652	Region 4
Channel Islands Harbor

Pollutant:	Diethyl phthalate
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.

Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.

Line of Evidence (LOE) for Decision ID 135652, Diethyl phthalate	Region 4
Channel Islands Harbor

LOE ID:

260597

Pollutant:

Diethyl phthalate

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The diethylphthalate criterion for the protection of human health from consumption of organisms only is 120,000 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-17 (Oxn_CI-17_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2019-12-04 and 2019-12-04

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY


DECISION ID	135653	Region 4
Channel Islands Harbor

Pollutant:	Dimethyl phthalate
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.

Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.

Line of Evidence (LOE) for Decision ID 135653, Dimethyl phthalate	Region 4
Channel Islands Harbor

LOE ID:

260380

Pollutant:

Dimethyl phthalate

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dimethyl phthalate criterion for the protection of human health from consumption of organisms only is 2,900,000 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-17 (Oxn_CI-17_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2019-12-04 and 2019-12-04

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY


DECISION ID	135654	Region 4
Channel Islands Harbor

Pollutant:	Dinitro-o-cresol
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.

Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.

Line of Evidence (LOE) for Decision ID 135654, Dinitro-o-cresol	Region 4
Channel Islands Harbor

LOE ID:

260396

Pollutant:

Dinitro-o-cresol

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The 2-methyl-4, 6-dinitrophenol criterion for the protection of human health from consumption of organisms only is 765 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-17 (Oxn_CI-17_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2019-12-04 and 2019-12-04

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY


DECISION ID	135656	Region 4
Channel Islands Harbor

Pollutant:	Endosulfan sulfate
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)(2018)
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence are necessary to assess listing status. 1 line of evidence is available in the administrative record to assess this pollutant. 0 of 29 samples exceeded the CRITERIA. Based on the readily available data and information, the weight of evidence indicates that there is insufficient justification for placing this water segment-pollutant combination on the CWA section 303(d) List. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. 0 of 29 sample exceeded the CRITERIA and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to SECTION 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.

Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because applicable water quality standards are not being exceeded.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.

Line of Evidence (LOE) for Decision ID 135656, Endosulfan sulfate	Region 4
Channel Islands Harbor

LOE ID:

261182

Pollutant:

Endosulfan sulfate

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endosulfan sulfate criterion for the protection of human health from consumption of organisms only is 240 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-13 (Oxn_CI-13_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135656, Endosulfan sulfate	Region 4
Channel Islands Harbor

LOE ID:

260687

Pollutant:

Endosulfan sulfate

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endosulfan sulfate criterion for the protection of human health from consumption of organisms only is 240 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-24 (Oxn_CI-24_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135656, Endosulfan sulfate	Region 4
Channel Islands Harbor

LOE ID:

260689

Pollutant:

Endosulfan sulfate

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endosulfan sulfate criterion for the protection of human health from consumption of organisms only is 240 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-14 (Oxn_CI-14_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135656, Endosulfan sulfate	Region 4
Channel Islands Harbor

LOE ID:

260799

Pollutant:

Endosulfan sulfate

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endosulfan sulfate criterion for the protection of human health from consumption of organisms only is 240 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-02 (Oxn_CI-02_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-11-29

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135656, Endosulfan sulfate	Region 4
Channel Islands Harbor

LOE ID:

260800

Pollutant:

Endosulfan sulfate

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endosulfan sulfate criterion for the protection of human health from consumption of organisms only is 240 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-21 (Oxn_CI-21_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-10 and 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135656, Endosulfan sulfate	Region 4
Channel Islands Harbor

LOE ID:

261200

Pollutant:

Endosulfan sulfate

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endosulfan sulfate criterion for the protection of human health from consumption of organisms only is 240 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-09 (Oxn_CI-09_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-10 and 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135656, Endosulfan sulfate	Region 4
Channel Islands Harbor

LOE ID:

261202

Pollutant:

Endosulfan sulfate

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endosulfan sulfate criterion for the protection of human health from consumption of organisms only is 240 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-19 (Oxn_CI-19_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-10 and 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135656, Endosulfan sulfate	Region 4
Channel Islands Harbor

LOE ID:

260907

Pollutant:

Endosulfan sulfate

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endosulfan sulfate criterion for the protection of human health from consumption of organisms only is 240 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-20 (Oxn_CI-20_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135656, Endosulfan sulfate	Region 4
Channel Islands Harbor

LOE ID:

260908

Pollutant:

Endosulfan sulfate

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endosulfan sulfate criterion for the protection of human health from consumption of organisms only is 240 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-11 (Oxn_CI-11_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-10 and 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135656, Endosulfan sulfate	Region 4
Channel Islands Harbor

LOE ID:

83671

Pollutant:

Endosulfan sulfate

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

State Water Board staff assessed 4 data for Channel Islands Harbor to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Endosulfan sulfate.

Data Reference:

RWB4 Miscellaneous Ventura Coastal 2006

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

The Endosulfan Sulfate criteria for the protection of human health from the consumption of organisms only is 240 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Data for this line of evidence for Channel Islands Harbor was collected at 1 monitoring site [ Channel Islands Harbor 5 - 410VHCHN5]

Temporal Representation:

Data was collected on a single day 10/12/2006.

Environmental Conditions:

Staff is not aware of any special conditions that might affect interpretation of the data.

QAPP Information:

The SWAMP QAPP (2008) was followed.

QAPP Information Reference(s):

Surface Water Ambient Monitoring Program Quality Assurance Program Plan

Line of Evidence (LOE) for Decision ID 135656, Endosulfan sulfate	Region 4
Channel Islands Harbor

LOE ID:

260909

Pollutant:

Endosulfan sulfate

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endosulfan sulfate criterion for the protection of human health from consumption of organisms only is 240 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-25 (Oxn_CI-25_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135656, Endosulfan sulfate	Region 4
Channel Islands Harbor

LOE ID:

261222

Pollutant:

Endosulfan sulfate

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endosulfan sulfate criterion for the protection of human health from consumption of organisms only is 240 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-16 (Oxn_CI-16_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135656, Endosulfan sulfate	Region 4
Channel Islands Harbor

LOE ID:

261224

Pollutant:

Endosulfan sulfate

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endosulfan sulfate criterion for the protection of human health from consumption of organisms only is 240 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-17 (Oxn_CI-17_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2019-12-04

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135656, Endosulfan sulfate	Region 4
Channel Islands Harbor

LOE ID:

261225

Pollutant:

Endosulfan sulfate

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endosulfan sulfate criterion for the protection of human health from consumption of organisms only is 240 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-10 (Oxn_CI-10_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-10 and 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135656, Endosulfan sulfate	Region 4
Channel Islands Harbor

LOE ID:

261137

Pollutant:

Endosulfan sulfate

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endosulfan sulfate criterion for the protection of human health from consumption of organisms only is 240 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-26 (Oxn_CI-26_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-10 and 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135656, Endosulfan sulfate	Region 4
Channel Islands Harbor

LOE ID:

260738

Pollutant:

Endosulfan sulfate

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endosulfan sulfate criterion for the protection of human health from consumption of organisms only is 240 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-08 (Oxn_CI-08_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-10 and 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135656, Endosulfan sulfate	Region 4
Channel Islands Harbor

LOE ID:

260954

Pollutant:

Endosulfan sulfate

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endosulfan sulfate criterion for the protection of human health from consumption of organisms only is 240 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-12 (Oxn_CI-12_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-10 and 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135656, Endosulfan sulfate	Region 4
Channel Islands Harbor

LOE ID:

261156

Pollutant:

Endosulfan sulfate

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endosulfan sulfate criterion for the protection of human health from consumption of organisms only is 240 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-31 (Oxn_CI-31_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-10 and 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135656, Endosulfan sulfate	Region 4
Channel Islands Harbor

LOE ID:

261159

Pollutant:

Endosulfan sulfate

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endosulfan sulfate criterion for the protection of human health from consumption of organisms only is 240 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-03 (Oxn_CI-03_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-10 and 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135656, Endosulfan sulfate	Region 4
Channel Islands Harbor

LOE ID:

260863

Pollutant:

Endosulfan sulfate

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endosulfan sulfate criterion for the protection of human health from consumption of organisms only is 240 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-27 (Oxn_CI-27_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135656, Endosulfan sulfate	Region 4
Channel Islands Harbor

LOE ID:

260864

Pollutant:

Endosulfan sulfate

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endosulfan sulfate criterion for the protection of human health from consumption of organisms only is 240 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-23 (Oxn_CI-23_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135656, Endosulfan sulfate	Region 4
Channel Islands Harbor

LOE ID:

260866

Pollutant:

Endosulfan sulfate

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endosulfan sulfate criterion for the protection of human health from consumption of organisms only is 240 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-22 (Oxn_CI-22_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-10 and 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135656, Endosulfan sulfate	Region 4
Channel Islands Harbor

LOE ID:

261181

Pollutant:

Endosulfan sulfate

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endosulfan sulfate criterion for the protection of human health from consumption of organisms only is 240 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-15 (Oxn_CI-15_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135656, Endosulfan sulfate	Region 4
Channel Islands Harbor

LOE ID:

261180

Pollutant:

Endosulfan sulfate

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endosulfan sulfate criterion for the protection of human health from consumption of organisms only is 240 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-06 (Oxn_CI-06_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-10 and 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135656, Endosulfan sulfate	Region 4
Channel Islands Harbor

LOE ID:

260662

Pollutant:

Endosulfan sulfate

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endosulfan sulfate criterion for the protection of human health from consumption of organisms only is 240 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-18 (Oxn_CI-18_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135656, Endosulfan sulfate	Region 4
Channel Islands Harbor

LOE ID:

260666

Pollutant:

Endosulfan sulfate

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endosulfan sulfate criterion for the protection of human health from consumption of organisms only is 240 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-07 (Oxn_CI-07_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY


DECISION ID	135657	Region 4
Channel Islands Harbor

Pollutant:	Endrin
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)(2018)
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence are necessary to assess listing status. 5 lines of evidence are available in the administrative record to assess this pollutant. 0 of 1 sample exceeded the criteria for Endrin in fish tissue. 0 of 1 sample exceeded the criteria for Endrin in shellfish tissue. 0 of 1 sample exceeded the COMM criteria for Endrin in water. 0 of 1 sample exceeded the MAR criteria for Endrin in water . 0 of 10 samples exceeded the criteria for Endrin in sediment. 0 of 28 samples exceeded the COMM criteria for Endrin in water. Based on the readily available data and information, the weight of evidence indicates that there is insufficient justification for placing this water segment-pollutant combination on the CWA section 303(d) List. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. 0 of 1, 0 of 1, 0 of 1, 0 of 1 and 0 of 5 samples exceeded the CRITERIA and this sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is fully supported using table 3.1. 4. Pursuant to SECTION 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.

Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because applicable water quality standards are not being exceeded.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.

Line of Evidence (LOE) for Decision ID 135657, Endrin	Region 4
Channel Islands Harbor

LOE ID:

261271

Pollutant:

Endrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Endrin. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endrin criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.0023 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-11 (Oxn_CI-11_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135657, Endrin	Region 4
Channel Islands Harbor

LOE ID:

261326

Pollutant:

Endrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endrin criterion to protect human health from the consumption of organisms only is 0.81 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-31 (Oxn_CI-31_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-10 and 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135657, Endrin	Region 4
Channel Islands Harbor

LOE ID:

261085

Pollutant:

Endrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Endrin. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endrin criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.0023 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-20 (Oxn_CI-20_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135657, Endrin	Region 4
Channel Islands Harbor

LOE ID:

261184

Pollutant:

Endrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Endrin. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endrin criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.0023 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-19 (Oxn_CI-19_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135657, Endrin	Region 4
Channel Islands Harbor

LOE ID:

261206

Pollutant:

Endrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Endrin. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endrin criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.0023 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-06 (Oxn_CI-06_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135657, Endrin	Region 4
Channel Islands Harbor

LOE ID:

261301

Pollutant:

Endrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Endrin. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endrin criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.0023 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-12 (Oxn_CI-12_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135657, Endrin	Region 4
Channel Islands Harbor

LOE ID:

261025

Pollutant:

Endrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Endrin. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endrin criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.0023 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-26 (Oxn_CI-26_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135657, Endrin	Region 4
Channel Islands Harbor

LOE ID:

261027

Pollutant:

Endrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Endrin. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endrin criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.0023 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-07 (Oxn_CI-07_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135657, Endrin	Region 4
Channel Islands Harbor

LOE ID:

261028

Pollutant:

Endrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Endrin. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endrin criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.0023 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-25 (Oxn_CI-25_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135657, Endrin	Region 4
Channel Islands Harbor

LOE ID:

261308

Pollutant:

Endrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Endrin. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endrin criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.0023 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-10 (Oxn_CI-10_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135657, Endrin	Region 4
Channel Islands Harbor

LOE ID:

261116

Pollutant:

Endrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Endrin. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endrin criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.0023 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-27 (Oxn_CI-27_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135657, Endrin	Region 4
Channel Islands Harbor

LOE ID:

261117

Pollutant:

Endrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Endrin. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endrin criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.0023 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-18 (Oxn_CI-18_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135657, Endrin	Region 4
Channel Islands Harbor

LOE ID:

261227

Pollutant:

Endrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Endrin. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endrin criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.0023 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-14 (Oxn_CI-14_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135657, Endrin	Region 4
Channel Islands Harbor

LOE ID:

261230

Pollutant:

Endrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Endrin. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endrin criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.0023 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-24 (Oxn_CI-24_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135657, Endrin	Region 4
Channel Islands Harbor

LOE ID:

261045

Pollutant:

Endrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Endrin. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endrin criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.0023 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-13 (Oxn_CI-13_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135657, Endrin	Region 4
Channel Islands Harbor

LOE ID:

261050

Pollutant:

Endrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Endrin. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endrin criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.0023 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-09 (Oxn_CI-09_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135657, Endrin	Region 4
Channel Islands Harbor

LOE ID:

261047

Pollutant:

Endrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endrin criterion to protect human health from the consumption of organisms only is 0.81 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-15 (Oxn_CI-15_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135657, Endrin	Region 4
Channel Islands Harbor

LOE ID:

261252

Pollutant:

Endrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endrin criterion to protect human health from the consumption of organisms only is 0.81 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-17 (Oxn_CI-17_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2019-12-04

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135657, Endrin	Region 4
Channel Islands Harbor

LOE ID:

248454

Pollutant:

Endrin

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The sediment quality guideline for Endrin is 0.76 ug/g organic carbon (USEPA1993d).

Guideline Reference:

Technical basis for deriving sediment criteria for nonionic organic contaminants for the protection of benthic organisms by using equilibrium partitioning. EPA822-R-93-011. Washington, D.C.: Office of Water, USEPA

Spatial Representation:

Data were collected from 1 station(s). Station Code(s): 410CHN001 (Channel Islands Harbor CI1).

Temporal Representation:

Data for this waterbody were collected over the date range 2017-05-24 to 2017-05-24

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 135657, Endrin	Region 4
Channel Islands Harbor

LOE ID:

248459

Pollutant:

Endrin

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The sediment quality guideline for Endrin is 0.76 ug/g organic carbon (USEPA1993d).

Guideline Reference:

Spatial Representation:

Data were collected from 1 station(s). Station Code(s): 410CHN004 (Channel Islands Harbor CI4).

Temporal Representation:

Data for this waterbody were collected over the date range 2017-05-24 to 2017-05-24

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 135657, Endrin	Region 4
Channel Islands Harbor

LOE ID:

248367

Pollutant:

Endrin

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The sediment quality guideline for Endrin is 0.76 ug/g organic carbon (USEPA1993d).

Guideline Reference:

Spatial Representation:

Data were collected from 1 station(s). Station Code(s): 410CHN002 (Channel Islands Harbor CI2).

Temporal Representation:

Data for this waterbody were collected over the date range 2017-05-24 to 2017-05-24

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 135657, Endrin	Region 4
Channel Islands Harbor

LOE ID:

248095

Pollutant:

Endrin

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The sediment quality guideline for Endrin is 0.76 ug/g organic carbon (USEPA1993d).

Guideline Reference:

Spatial Representation:

Data were collected from 1 station(s). Station Code(s): 410CHN003 (Channel Islands Harbor CI3).

Temporal Representation:

Data for this waterbody were collected over the date range 2017-05-24 to 2017-05-24

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 135657, Endrin	Region 4
Channel Islands Harbor

LOE ID:

248096

Pollutant:

Endrin

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The sediment quality guideline for Endrin is 0.76 ug/g organic carbon (USEPA1993d).

Guideline Reference:

Spatial Representation:

Data were collected from 1 station(s). Station Code(s): 410CHN005 (Channel Islands Harbor CI5).

Temporal Representation:

Data for this waterbody were collected over the date range 2017-05-24 to 2017-05-24

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 135657, Endrin	Region 4
Channel Islands Harbor

LOE ID:

261267

Pollutant:

Endrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Endrin. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endrin criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.0023 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-23 (Oxn_CI-23_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135657, Endrin	Region 4
Channel Islands Harbor

LOE ID:

261268

Pollutant:

Endrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Endrin. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endrin criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.0023 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-21 (Oxn_CI-21_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135657, Endrin	Region 4
Channel Islands Harbor

LOE ID:

261270

Pollutant:

Endrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Endrin. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endrin criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.0023 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-22 (Oxn_CI-22_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135657, Endrin	Region 4
Channel Islands Harbor

LOE ID:

261254

Pollutant:

Endrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Endrin. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endrin criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.0023 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-16 (Oxn_CI-16_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135657, Endrin	Region 4
Channel Islands Harbor

LOE ID:

261062

Pollutant:

Endrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Endrin. Although a total of 4 samples were collected, 4 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endrin criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.0023 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-17 (Oxn_CI-17_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2019-12-04

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135657, Endrin	Region 4
Channel Islands Harbor

LOE ID:

261063

Pollutant:

Endrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Endrin. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endrin criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.0023 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-31 (Oxn_CI-31_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135657, Endrin	Region 4
Channel Islands Harbor

LOE ID:

261064

Pollutant:

Endrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Endrin. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endrin criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.0023 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-08 (Oxn_CI-08_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135657, Endrin	Region 4
Channel Islands Harbor

LOE ID:

261066

Pollutant:

Endrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Endrin. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endrin criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.0023 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-15 (Oxn_CI-15_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135657, Endrin	Region 4
Channel Islands Harbor

LOE ID:

261067

Pollutant:

Endrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Endrin. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endrin criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.0023 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-03 (Oxn_CI-03_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135657, Endrin	Region 4
Channel Islands Harbor

LOE ID:

261165

Pollutant:

Endrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endrin criterion to protect human health from the consumption of organisms only is 0.81 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-27 (Oxn_CI-27_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135657, Endrin	Region 4
Channel Islands Harbor

LOE ID:

261076

Pollutant:

Endrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endrin criterion to protect human health from the consumption of organisms only is 0.81 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-03 (Oxn_CI-03_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-10 and 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135657, Endrin	Region 4
Channel Islands Harbor

LOE ID:

261077

Pollutant:

Endrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endrin criterion to protect human health from the consumption of organisms only is 0.81 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-07 (Oxn_CI-07_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135657, Endrin	Region 4
Channel Islands Harbor

LOE ID:

261079

Pollutant:

Endrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endrin criterion to protect human health from the consumption of organisms only is 0.81 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-24 (Oxn_CI-24_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135657, Endrin	Region 4
Channel Islands Harbor

LOE ID:

261083

Pollutant:

Endrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endrin criterion to protect human health from the consumption of organisms only is 0.81 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-06 (Oxn_CI-06_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-10 and 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135657, Endrin	Region 4
Channel Islands Harbor

LOE ID:

261185

Pollutant:

Endrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endrin criterion to protect human health from the consumption of organisms only is 0.81 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-19 (Oxn_CI-19_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-10 and 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135657, Endrin	Region 4
Channel Islands Harbor

LOE ID:

261291

Pollutant:

Endrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endrin criterion to protect human health from the consumption of organisms only is 0.81 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-09 (Oxn_CI-09_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-10 and 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135657, Endrin	Region 4
Channel Islands Harbor

LOE ID:

83675

Pollutant:

Endrin

LOE Subgroup:

Pollutant-Tissue

Matrix:

Tissue

Fraction:

Fish fillet

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

Fish tissue analysis

Data Used to Assess Water Quality:

Data Reference:

RWB4 Miscellaneous Ventura Coastal 2006

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The modified OEHHA Fish Contaminant Goal for endrin in fish tissue is 660 ppb. This screening level assumes an average body weight of 70 kg and a consumption rate of 32 g/day. A cooking reduction factor of 1 is applied for skin-off fillets. (Klasing, S., and R. Brodberg, 2008; USEPA, 2000)

Guideline Reference:

Development of Fish Contaminant Goals and Advisory Tissue Levels for Common Contaminants in California Sport Fish: Chlordane, DDTs, Dieldrin, Methylmercury, PCBs, Selenium, and Toxaphene

Guideline Reference:

Guidance for Assessing Chemical Contaminant Data for Use In Fish Advisories Volume 1: Fish Sampling and Analysis

Spatial Representation:

Samples are collected by hand from three sub-locations (A,B,C) from site 410VHCHN5. The three samples per site were averaged prior to assessment.

Temporal Representation:

Representative samples of locally abundant species were collected on February 28, 2007

Environmental Conditions:

QAPP Information:

Samples were collected as part of the State Water Board's Surface Water Ambient Monitoring Program.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 135657, Endrin	Region 4
Channel Islands Harbor

LOE ID:

82817

Pollutant:

Endrin

LOE Subgroup:

Pollutant-Tissue

Matrix:

Tissue

Fraction:

Shellfish

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

Shellfish surveys

Data Used to Assess Water Quality:

The sample did not exceed the guideline.

Data Reference:

RWB4 Miscellaneous Ventura Coastal 2006

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The modified OEHHA Fish Contaminant Goal for endrin in shellfish tissue is 1,000 ppb. This screening level assumes an average body weight of 70 kg and a consumption rate of 21 g/day. (Brodberg, R.K., and G.A. Pollock, 1999; Klasing, S., and R. Brodberg, 2008; USEPA, 2000)

Guideline Reference:

Prevalence of Selected Target Chemical Contaminants in Sport Fish From Two California Lakes: Public health designed screening study. Sacramento, CA: Office of Environmental Health Hazard Assessment

Guideline Reference:

Development of Fish Contaminant Goals and Advisory Tissue Levels for Common Contaminants in California Sport Fish: Chlordane, DDTs, Dieldrin, Methylmercury, PCBs, Selenium, and Toxaphene

Guideline Reference:

Guidance for Assessing Chemical Contaminant Data for Use In Fish Advisories Volume 1: Fish Sampling and Analysis

Spatial Representation:

Data was collected at one station: Channel Islands Harbor 5 - 410VHCHN5.

Temporal Representation:

Data was collected on a single day 2/28/2007.

Environmental Conditions:

QAPP Information:

Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002

QAPP Information Reference(s):

Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version)

Line of Evidence (LOE) for Decision ID 135657, Endrin	Region 4
Channel Islands Harbor

LOE ID:

83674

Pollutant:

Endrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

State Water Board staff assessed 4 data for Channel Islands Harbor to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Endrin.

Data Reference:

RWB4 Miscellaneous Ventura Coastal 2006

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

The Endrin criteria for the protection of human health from consumption of organisms only is 0.81ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Data for this line of evidence for Channel Islands Harbor was collected at 1 monitoring site [ Channel Islands Harbor 5 - 410VHCHN5]

Temporal Representation:

Data was collected on a single day 10/12/2006.

Environmental Conditions:

Staff is not aware of any special conditions that might affect interpretation of the data.

QAPP Information:

The SWAMP QAPP (2008) was followed.

QAPP Information Reference(s):

Surface Water Ambient Monitoring Program Quality Assurance Program Plan

Line of Evidence (LOE) for Decision ID 135657, Endrin	Region 4
Channel Islands Harbor

LOE ID:

83673

Pollutant:

Endrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

State Water Board staff assessed 4 data for Channel Islands Harbor to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Endrin.

Data Reference:

RWB4 Miscellaneous Ventura Coastal 2006

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

The Endrin criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saltwater is 0.0023 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Data for this line of evidence for Channel Islands Harbor was collected at 1 monitoring site [ Channel Islands Harbor 5 - 410VHCHN5]

Temporal Representation:

Data was collected on a single day 10/12/2006.

Environmental Conditions:

Staff is not aware of any special conditions that might affect interpretation of the data.

QAPP Information:

The SWAMP QAPP (2008) was followed.

QAPP Information Reference(s):

Surface Water Ambient Monitoring Program Quality Assurance Program Plan

Line of Evidence (LOE) for Decision ID 135657, Endrin	Region 4
Channel Islands Harbor

LOE ID:

83672

Pollutant:

Endrin

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Boardstaff assessed SWAMP data for Channel Islands Harbor to determine beneficial use support and results are as follows: 0 of 5 samples exceed the criterion for Endrin.

Data Reference:

RWB4 Miscellaneous Ventura Coastal 2006

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

In marine and estuarine sediments the sediment quality guideline (predictive of sediment toxicity for sediment-dwelling organisms) for Endrin is 0.76 ug/g oc (Fairey et al., 2001).

Guideline Reference:

Spatial Representation:

Temporal Representation:

Data was collected over the time period 10/11/2006-10/12/2006.

Environmental Conditions:

Staff is not aware of any special conditions that might affect interpretation of the data.

QAPP Information:

2002 QAMP (Quality Assurance Management Plan) for the State of California's Surface Water Ambient Monitoring Program

QAPP Information Reference(s):

Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version)

Line of Evidence (LOE) for Decision ID 135657, Endrin	Region 4
Channel Islands Harbor

LOE ID:

261096

Pollutant:

Endrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endrin criterion to protect human health from the consumption of organisms only is 0.81 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-26 (Oxn_CI-26_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-10 and 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135657, Endrin	Region 4
Channel Islands Harbor

LOE ID:

261188

Pollutant:

Endrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endrin criterion to protect human health from the consumption of organisms only is 0.81 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-13 (Oxn_CI-13_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135657, Endrin	Region 4
Channel Islands Harbor

LOE ID:

261292

Pollutant:

Endrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endrin criterion to protect human health from the consumption of organisms only is 0.81 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-25 (Oxn_CI-25_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135657, Endrin	Region 4
Channel Islands Harbor

LOE ID:

261303

Pollutant:

Endrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endrin criterion to protect human health from the consumption of organisms only is 0.81 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-10 (Oxn_CI-10_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-10 and 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135657, Endrin	Region 4
Channel Islands Harbor

LOE ID:

261024

Pollutant:

Endrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endrin criterion to protect human health from the consumption of organisms only is 0.81 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-14 (Oxn_CI-14_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135657, Endrin	Region 4
Channel Islands Harbor

LOE ID:

261305

Pollutant:

Endrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endrin criterion to protect human health from the consumption of organisms only is 0.81 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-22 (Oxn_CI-22_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-10 and 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135657, Endrin	Region 4
Channel Islands Harbor

LOE ID:

261307

Pollutant:

Endrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endrin criterion to protect human health from the consumption of organisms only is 0.81 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-11 (Oxn_CI-11_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-10 and 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135657, Endrin	Region 4
Channel Islands Harbor

LOE ID:

261310

Pollutant:

Endrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endrin criterion to protect human health from the consumption of organisms only is 0.81 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-12 (Oxn_CI-12_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-10 and 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135657, Endrin	Region 4
Channel Islands Harbor

LOE ID:

261311

Pollutant:

Endrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endrin criterion to protect human health from the consumption of organisms only is 0.81 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-16 (Oxn_CI-16_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135657, Endrin	Region 4
Channel Islands Harbor

LOE ID:

261029

Pollutant:

Endrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endrin criterion to protect human health from the consumption of organisms only is 0.81 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-18 (Oxn_CI-18_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135657, Endrin	Region 4
Channel Islands Harbor

LOE ID:

261121

Pollutant:

Endrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endrin criterion to protect human health from the consumption of organisms only is 0.81 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-23 (Oxn_CI-23_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135657, Endrin	Region 4
Channel Islands Harbor

LOE ID:

261312

Pollutant:

Endrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endrin criterion to protect human health from the consumption of organisms only is 0.81 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-20 (Oxn_CI-20_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135657, Endrin	Region 4
Channel Islands Harbor

LOE ID:

261038

Pollutant:

Endrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endrin criterion to protect human health from the consumption of organisms only is 0.81 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-08 (Oxn_CI-08_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-10 and 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135657, Endrin	Region 4
Channel Islands Harbor

LOE ID:

261040

Pollutant:

Endrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endrin criterion to protect human health from the consumption of organisms only is 0.81 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-02 (Oxn_CI-02_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-11-29

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135657, Endrin	Region 4
Channel Islands Harbor

LOE ID:

261043

Pollutant:

Endrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endrin criterion to protect human health from the consumption of organisms only is 0.81 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-21 (Oxn_CI-21_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-10 and 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135657, Endrin	Region 4
Channel Islands Harbor

LOE ID:

261272

Pollutant:

Endrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Endrin. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endrin criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.0023 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-02 (Oxn_CI-02_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-11-29

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY


DECISION ID	135658	Region 4
Channel Islands Harbor

Pollutant:	Endrin aldehyde
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)(2018)
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status. 1 line of evidence is available in the administrative record to assess this pollutant. 0 of the 25 samples exceed the CRITERIA. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the CWA section 303(d) List in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. 0 of 25 samples exceed the CRITERIA and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.

Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because applicable water quality standards are not being exceeded.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.

Line of Evidence (LOE) for Decision ID 135658, Endrin aldehyde	Region 4
Channel Islands Harbor

LOE ID:

261211

Pollutant:

Endrin aldehyde

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endrin aldehyde criterion to protect human health from the consumption of organisms only is 0.81 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-19 (Oxn_CI-19_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-10 and 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135658, Endrin aldehyde	Region 4
Channel Islands Harbor

LOE ID:

261213

Pollutant:

Endrin aldehyde

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endrin aldehyde criterion to protect human health from the consumption of organisms only is 0.81 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-15 (Oxn_CI-15_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135658, Endrin aldehyde	Region 4
Channel Islands Harbor

LOE ID:

261122

Pollutant:

Endrin aldehyde

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endrin aldehyde criterion to protect human health from the consumption of organisms only is 0.81 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-11 (Oxn_CI-11_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-10 and 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135658, Endrin aldehyde	Region 4
Channel Islands Harbor

LOE ID:

261124

Pollutant:

Endrin aldehyde

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endrin aldehyde criterion to protect human health from the consumption of organisms only is 0.81 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-22 (Oxn_CI-22_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-10 and 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135658, Endrin aldehyde	Region 4
Channel Islands Harbor

LOE ID:

261125

Pollutant:

Endrin aldehyde

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endrin aldehyde criterion to protect human health from the consumption of organisms only is 0.81 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-06 (Oxn_CI-06_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-10 and 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135658, Endrin aldehyde	Region 4
Channel Islands Harbor

LOE ID:

261126

Pollutant:

Endrin aldehyde

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endrin aldehyde criterion to protect human health from the consumption of organisms only is 0.81 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-13 (Oxn_CI-13_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135658, Endrin aldehyde	Region 4
Channel Islands Harbor

LOE ID:

261127

Pollutant:

Endrin aldehyde

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endrin aldehyde criterion to protect human health from the consumption of organisms only is 0.81 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-26 (Oxn_CI-26_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-10 and 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135658, Endrin aldehyde	Region 4
Channel Islands Harbor

LOE ID:

261145

Pollutant:

Endrin aldehyde

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endrin aldehyde criterion to protect human health from the consumption of organisms only is 0.81 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-10 (Oxn_CI-10_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-10 and 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135658, Endrin aldehyde	Region 4
Channel Islands Harbor

LOE ID:

261147

Pollutant:

Endrin aldehyde

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endrin aldehyde criterion to protect human health from the consumption of organisms only is 0.81 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-02 (Oxn_CI-02_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-11-29

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135658, Endrin aldehyde	Region 4
Channel Islands Harbor

LOE ID:

261150

Pollutant:

Endrin aldehyde

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endrin aldehyde criterion to protect human health from the consumption of organisms only is 0.81 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-12 (Oxn_CI-12_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-10 and 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135658, Endrin aldehyde	Region 4
Channel Islands Harbor

LOE ID:

261167

Pollutant:

Endrin aldehyde

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endrin aldehyde criterion to protect human health from the consumption of organisms only is 0.81 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-31 (Oxn_CI-31_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-10 and 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135658, Endrin aldehyde	Region 4
Channel Islands Harbor

LOE ID:

261168

Pollutant:

Endrin aldehyde

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endrin aldehyde criterion to protect human health from the consumption of organisms only is 0.81 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-20 (Oxn_CI-20_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135658, Endrin aldehyde	Region 4
Channel Islands Harbor

LOE ID:

261171

Pollutant:

Endrin aldehyde

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endrin aldehyde criterion to protect human health from the consumption of organisms only is 0.81 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-09 (Oxn_CI-09_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-10 and 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135658, Endrin aldehyde	Region 4
Channel Islands Harbor

LOE ID:

261086

Pollutant:

Endrin aldehyde

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endrin aldehyde criterion to protect human health from the consumption of organisms only is 0.81 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-17 (Oxn_CI-17_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2019-12-04

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135658, Endrin aldehyde	Region 4
Channel Islands Harbor

LOE ID:

261087

Pollutant:

Endrin aldehyde

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endrin aldehyde criterion to protect human health from the consumption of organisms only is 0.81 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-23 (Oxn_CI-23_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135658, Endrin aldehyde	Region 4
Channel Islands Harbor

LOE ID:

261190

Pollutant:

Endrin aldehyde

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endrin aldehyde criterion to protect human health from the consumption of organisms only is 0.81 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-14 (Oxn_CI-14_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135658, Endrin aldehyde	Region 4
Channel Islands Harbor

LOE ID:

261192

Pollutant:

Endrin aldehyde

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endrin aldehyde criterion to protect human health from the consumption of organisms only is 0.81 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-16 (Oxn_CI-16_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135658, Endrin aldehyde	Region 4
Channel Islands Harbor

LOE ID:

261193

Pollutant:

Endrin aldehyde

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endrin aldehyde criterion to protect human health from the consumption of organisms only is 0.81 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-25 (Oxn_CI-25_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135658, Endrin aldehyde	Region 4
Channel Islands Harbor

LOE ID:

261194

Pollutant:

Endrin aldehyde

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endrin aldehyde criterion to protect human health from the consumption of organisms only is 0.81 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-24 (Oxn_CI-24_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135658, Endrin aldehyde	Region 4
Channel Islands Harbor

LOE ID:

83676

Pollutant:

Endrin aldehyde

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

State Water Board staff assessed 4 data for Channel Islands Harbor to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Endrin Aldehyde.

Data Reference:

RWB4 Miscellaneous Ventura Coastal 2006

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

No individual pesticide or combination of pesticides shall be present in concentrations that affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The Endrin Aldehyde criteria for the protection of human health from consumption of organisms only is 0.30 ug/L (National Recommended Water Quality Criteria, 2009).

Guideline Reference:

Spatial Representation:

Data for this line of evidence for Channel Islands Harbor was collected at 1 monitoring site [ Channel Islands Harbor 5 - 410VHCHN5]

Temporal Representation:

Data was collected on a single day 10/12/2006.

Environmental Conditions:

Staff is not aware of any special conditions that might affect interpretation of the data.

QAPP Information:

The SWAMP QAPP (2008) was followed.

QAPP Information Reference(s):

Surface Water Ambient Monitoring Program Quality Assurance Program Plan

Line of Evidence (LOE) for Decision ID 135658, Endrin aldehyde	Region 4
Channel Islands Harbor

LOE ID:

261105

Pollutant:

Endrin aldehyde

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endrin aldehyde criterion to protect human health from the consumption of organisms only is 0.81 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-08 (Oxn_CI-08_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-10 and 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135658, Endrin aldehyde	Region 4
Channel Islands Harbor

LOE ID:

261107

Pollutant:

Endrin aldehyde

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endrin aldehyde criterion to protect human health from the consumption of organisms only is 0.81 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-21 (Oxn_CI-21_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-10 and 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY


DECISION ID	135659	Region 4
Channel Islands Harbor

Pollutant:	Ethylbenzene
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.

Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.

Line of Evidence (LOE) for Decision ID 135659, Ethylbenzene	Region 4
Channel Islands Harbor

LOE ID:

261352

Pollutant:

Ethylbenzene

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The ethylbenzene criterion for the protection of human health from consumption of organisms only is 29,000 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-17 (Oxn_CI-17_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2019-12-04 and 2019-12-04

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY


DECISION ID	135661	Region 4
Channel Islands Harbor

Pollutant:	Fluoranthene
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)(2018)
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence are necessary to assess listing status. 1 line of evidence is available in the administrative record to assess this pollutant. 0 of 1 sample exceeded the CRITERIA. Based on the readily available data and information, the weight of evidence indicates that there is insufficient justification for placing this water segment-pollutant combination on the CWA section 303(d) List. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. 0 of 1 sample exceeded the CRITERIA and this sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is fully supported using table 3.1. 4. Pursuant to SECTION 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.

Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.

Line of Evidence (LOE) for Decision ID 135661, Fluoranthene	Region 4
Channel Islands Harbor

LOE ID:

83677

Pollutant:

Fluoranthene

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

State Water Board staff assessed 4 data for Channel Islands Harbor to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Fluoranthene.

Data Reference:

RWB4 Miscellaneous Ventura Coastal 2006

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

The Fluoranthene criteria for the protection of human health from consumption of organisms only is 370 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Data for this line of evidence for Channel Islands Harbor was collected at 1 monitoring site [ Channel Islands Harbor 5 - 410VHCHN5]

Temporal Representation:

Data was collected on a single day 10/12/2006.

Environmental Conditions:

Staff is not aware of any special conditions that might affect interpretation of the data.

QAPP Information:

The SWAMP QAPP (2008) was followed.

QAPP Information Reference(s):

Surface Water Ambient Monitoring Program Quality Assurance Program Plan

Line of Evidence (LOE) for Decision ID 135661, Fluoranthene	Region 4
Channel Islands Harbor

LOE ID:

261613

Pollutant:

Fluoranthene

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Fluoranthene criteria for the protection of human health from consumption of organisms only is 370 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-17 (Oxn_CI-17_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2019-12-04 and 2019-12-04

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY


DECISION ID	135662	Region 4
Channel Islands Harbor

Pollutant:	Fluorene
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)(2018)
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence are necessary to assess listing status. 1 line of evidence is available in the administrative record to assess this pollutant. 0 of 1 sample exceeded the CRITERIA. Based on the readily available data and information, the weight of evidence indicates that there is insufficient justification for placing this water segment-pollutant combination on the CWA section 303(d) List. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. 0 of 1 sample exceeded the CRITERIA and this sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is fully supported using table 3.1. 4. Pursuant to SECTION 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.

Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.

Line of Evidence (LOE) for Decision ID 135662, Fluorene	Region 4
Channel Islands Harbor

LOE ID:

83678

Pollutant:

Fluorene

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

State Water Board staff assessed 4 data for Channel Islands Harbor to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Fluorene.

Data Reference:

RWB4 Miscellaneous Ventura Coastal 2006

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

The Fluorene criteria for the protection of human health from consumption of organisms only is 14,000 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Data for this line of evidence for Channel Islands Harbor was collected at 1 monitoring site [ Channel Islands Harbor 5 - 410VHCHN5]

Temporal Representation:

Data was collected on a single day 10/12/2006.

Environmental Conditions:

Staff is not aware of any special conditions that might affect interpretation of the data.

QAPP Information:

The SWAMP QAPP (2008) was followed.

QAPP Information Reference(s):

Surface Water Ambient Monitoring Program Quality Assurance Program Plan

Line of Evidence (LOE) for Decision ID 135662, Fluorene	Region 4
Channel Islands Harbor

LOE ID:

261631

Pollutant:

Fluorene

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The fluorene criterion for the protection of human health from consumption of organisms only is 14,000 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-17 (Oxn_CI-17_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2019-12-04 and 2019-12-04

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY


DECISION ID	135664	Region 4
Channel Islands Harbor

Pollutant:	Heptachlor
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)(2018)
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.

Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.

Line of Evidence (LOE) for Decision ID 135664, Heptachlor	Region 4
Channel Islands Harbor

LOE ID:

261957

Pollutant:

Heptachlor

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The heptachlor criterion to protect human health from the consumption of organisms only is 0.00021 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-16 (Oxn_CI-16_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135664, Heptachlor	Region 4
Channel Islands Harbor

LOE ID:

261979

Pollutant:

Heptachlor

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The heptachlor criterion to protect human health from the consumption of organisms only is 0.00021 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-31 (Oxn_CI-31_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135664, Heptachlor	Region 4
Channel Islands Harbor

LOE ID:

261981

Pollutant:

Heptachlor

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The heptachlor criterion to protect human health from the consumption of organisms only is 0.00021 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-11 (Oxn_CI-11_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135664, Heptachlor	Region 4
Channel Islands Harbor

LOE ID:

262001

Pollutant:

Heptachlor

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The heptachlor criterion to protect human health from the consumption of organisms only is 0.00021 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-20 (Oxn_CI-20_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135664, Heptachlor	Region 4
Channel Islands Harbor

LOE ID:

261932

Pollutant:

Heptachlor

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The heptachlor criterion to protect human health from the consumption of organisms only is 0.00021 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-14 (Oxn_CI-14_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135664, Heptachlor	Region 4
Channel Islands Harbor

LOE ID:

262033

Pollutant:

Heptachlor

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The heptachlor criterion to protect human health from the consumption of organisms only is 0.00021 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-15 (Oxn_CI-15_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135664, Heptachlor	Region 4
Channel Islands Harbor

LOE ID:

262117

Pollutant:

Heptachlor

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The heptachlor criterion to protect human health from the consumption of organisms only is 0.00021 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-08 (Oxn_CI-08_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135664, Heptachlor	Region 4
Channel Islands Harbor

LOE ID:

262119

Pollutant:

Heptachlor

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The heptachlor criterion to protect human health from the consumption of organisms only is 0.00021 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-12 (Oxn_CI-12_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135664, Heptachlor	Region 4
Channel Islands Harbor

LOE ID:

262221

Pollutant:

Heptachlor

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The heptachlor criterion to protect human health from the consumption of organisms only is 0.00021 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-22 (Oxn_CI-22_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135664, Heptachlor	Region 4
Channel Islands Harbor

LOE ID:

262225

Pollutant:

Heptachlor

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The heptachlor criterion to protect human health from the consumption of organisms only is 0.00021 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-26 (Oxn_CI-26_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135664, Heptachlor	Region 4
Channel Islands Harbor

LOE ID:

261933

Pollutant:

Heptachlor

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The heptachlor criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.0036 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-18 (Oxn_CI-18_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135664, Heptachlor	Region 4
Channel Islands Harbor

LOE ID:

262013

Pollutant:

Heptachlor

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The heptachlor criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.0036 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-31 (Oxn_CI-31_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135664, Heptachlor	Region 4
Channel Islands Harbor

LOE ID:

261956

Pollutant:

Heptachlor

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The heptachlor criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.0036 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-02 (Oxn_CI-02_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-11-29

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135664, Heptachlor	Region 4
Channel Islands Harbor

LOE ID:

261974

Pollutant:

Heptachlor

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The heptachlor criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.0036 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-27 (Oxn_CI-27_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135664, Heptachlor	Region 4
Channel Islands Harbor

LOE ID:

261977

Pollutant:

Heptachlor

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The heptachlor criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.0036 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-21 (Oxn_CI-21_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135664, Heptachlor	Region 4
Channel Islands Harbor

LOE ID:

261998

Pollutant:

Heptachlor

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The heptachlor criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.0036 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-25 (Oxn_CI-25_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135664, Heptachlor	Region 4
Channel Islands Harbor

LOE ID:

261912

Pollutant:

Heptachlor

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The heptachlor criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.0036 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-10 (Oxn_CI-10_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135664, Heptachlor	Region 4
Channel Islands Harbor

LOE ID:

262002

Pollutant:

Heptachlor

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The heptachlor criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.0036 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-09 (Oxn_CI-09_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135664, Heptachlor	Region 4
Channel Islands Harbor

LOE ID:

261915

Pollutant:

Heptachlor

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The heptachlor criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.0036 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-08 (Oxn_CI-08_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135664, Heptachlor	Region 4
Channel Islands Harbor

LOE ID:

262039

Pollutant:

Heptachlor

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The heptachlor criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.0036 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-13 (Oxn_CI-13_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135664, Heptachlor	Region 4
Channel Islands Harbor

LOE ID:

262041

Pollutant:

Heptachlor

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The heptachlor criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.0036 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-19 (Oxn_CI-19_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135664, Heptachlor	Region 4
Channel Islands Harbor

LOE ID:

262139

Pollutant:

Heptachlor

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The heptachlor criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.0036 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-14 (Oxn_CI-14_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135664, Heptachlor	Region 4
Channel Islands Harbor

LOE ID:

262141

Pollutant:

Heptachlor

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The heptachlor criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.0036 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-15 (Oxn_CI-15_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135664, Heptachlor	Region 4
Channel Islands Harbor

LOE ID:

262057

Pollutant:

Heptachlor

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The heptachlor criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.0036 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-23 (Oxn_CI-23_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135664, Heptachlor	Region 4
Channel Islands Harbor

LOE ID:

262159

Pollutant:

Heptachlor

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The heptachlor criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.0036 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-07 (Oxn_CI-07_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135664, Heptachlor	Region 4
Channel Islands Harbor

LOE ID:

262076

Pollutant:

Heptachlor

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The heptachlor criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.0036 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-26 (Oxn_CI-26_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135664, Heptachlor	Region 4
Channel Islands Harbor

LOE ID:

262184

Pollutant:

Heptachlor

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The heptachlor criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.0036 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-22 (Oxn_CI-22_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135664, Heptachlor	Region 4
Channel Islands Harbor

LOE ID:

262204

Pollutant:

Heptachlor

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The heptachlor criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.0036 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-16 (Oxn_CI-16_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135664, Heptachlor	Region 4
Channel Islands Harbor

LOE ID:

262205

Pollutant:

Heptachlor

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The heptachlor criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.0036 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-20 (Oxn_CI-20_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135664, Heptachlor	Region 4
Channel Islands Harbor

LOE ID:

262206

Pollutant:

Heptachlor

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The heptachlor criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.0036 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-12 (Oxn_CI-12_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135664, Heptachlor	Region 4
Channel Islands Harbor

LOE ID:

262019

Pollutant:

Heptachlor

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The heptachlor criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.0036 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-03 (Oxn_CI-03_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135664, Heptachlor	Region 4
Channel Islands Harbor

LOE ID:

262021

Pollutant:

Heptachlor

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The heptachlor criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.0036 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-06 (Oxn_CI-06_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135664, Heptachlor	Region 4
Channel Islands Harbor

LOE ID:

262118

Pollutant:

Heptachlor

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The heptachlor criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.0036 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-11 (Oxn_CI-11_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135664, Heptachlor	Region 4
Channel Islands Harbor

LOE ID:

262224

Pollutant:

Heptachlor

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor. Although a total of 4 samples were collected, 4 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The heptachlor criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.0036 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-17 (Oxn_CI-17_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2019-12-04

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135664, Heptachlor	Region 4
Channel Islands Harbor

LOE ID:

262228

Pollutant:

Heptachlor

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The heptachlor criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.0036 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-24 (Oxn_CI-24_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135664, Heptachlor	Region 4
Channel Islands Harbor

LOE ID:

261936

Pollutant:

Heptachlor

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The heptachlor criterion to protect human health from the consumption of organisms only is 0.00021 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-10 (Oxn_CI-10_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135664, Heptachlor	Region 4
Channel Islands Harbor

LOE ID:

261938

Pollutant:

Heptachlor

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The heptachlor criterion to protect human health from the consumption of organisms only is 0.00021 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-25 (Oxn_CI-25_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135664, Heptachlor	Region 4
Channel Islands Harbor

LOE ID:

261953

Pollutant:

Heptachlor

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The heptachlor criterion to protect human health from the consumption of organisms only is 0.00021 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-27 (Oxn_CI-27_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135664, Heptachlor	Region 4
Channel Islands Harbor

LOE ID:

261954

Pollutant:

Heptachlor

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The heptachlor criterion to protect human health from the consumption of organisms only is 0.00021 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-24 (Oxn_CI-24_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135664, Heptachlor	Region 4
Channel Islands Harbor

LOE ID:

262042

Pollutant:

Heptachlor

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor. Although a total of 4 samples were collected, 4 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The heptachlor criterion to protect human health from the consumption of organisms only is 0.00021 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-17 (Oxn_CI-17_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2019-12-04

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135664, Heptachlor	Region 4
Channel Islands Harbor

LOE ID:

262054

Pollutant:

Heptachlor

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The heptachlor criterion to protect human health from the consumption of organisms only is 0.00021 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-09 (Oxn_CI-09_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135664, Heptachlor	Region 4
Channel Islands Harbor

LOE ID:

262163

Pollutant:

Heptachlor

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The heptachlor criterion to protect human health from the consumption of organisms only is 0.00021 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-18 (Oxn_CI-18_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135664, Heptachlor	Region 4
Channel Islands Harbor

LOE ID:

83680

Pollutant:

Heptachlor

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

State Water Board staff assessed 4 data for Channel Islands Harbor to determine beneficial use support and results are as follows: 0 of 0 samples exceed the criterion for Heptachlor. One sample result(s) were not used in the assessment because the laboratory data reporting limit(s) was above the objective and therefore the results could not be quantified with the level of certainty required by the Listing Policy.

Data Reference:

RWB4 Miscellaneous Ventura Coastal 2006

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

The Heptachlor criteria for the protection of human health from consumption of organisms only is 0.00021 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Data for this line of evidence for Channel Islands Harbor was collected at 1 monitoring site [ Channel Islands Harbor 5 - 410VHCHN5]

Temporal Representation:

Data was collected on a single day 10/12/2006.

Environmental Conditions:

Staff is not aware of any special conditions that might affect interpretation of the data.

QAPP Information:

The SWAMP QAPP (2008) was followed.

QAPP Information Reference(s):

Surface Water Ambient Monitoring Program Quality Assurance Program Plan

Line of Evidence (LOE) for Decision ID 135664, Heptachlor	Region 4
Channel Islands Harbor

LOE ID:

83679

Pollutant:

Heptachlor

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

State Water Board staff assessed 4 data for Channel Islands Harbor to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Heptachlor.

Data Reference:

RWB4 Miscellaneous Ventura Coastal 2006

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

The Heptachlor criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.0036 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Data for this line of evidence for Channel Islands Harbor was collected at 1 monitoring site [ Channel Islands Harbor 5 - 410VHCHN5]

Temporal Representation:

Data was collected on a single day 10/12/2006.

Environmental Conditions:

Staff is not aware of any special conditions that might affect interpretation of the data.

QAPP Information:

The SWAMP QAPP (2008) was followed.

QAPP Information Reference(s):

Surface Water Ambient Monitoring Program Quality Assurance Program Plan

Line of Evidence (LOE) for Decision ID 135664, Heptachlor	Region 4
Channel Islands Harbor

LOE ID:

262074

Pollutant:

Heptachlor

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The heptachlor criterion to protect human health from the consumption of organisms only is 0.00021 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-02 (Oxn_CI-02_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-11-29

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135664, Heptachlor	Region 4
Channel Islands Harbor

LOE ID:

262077

Pollutant:

Heptachlor

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The heptachlor criterion to protect human health from the consumption of organisms only is 0.00021 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-23 (Oxn_CI-23_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135664, Heptachlor	Region 4
Channel Islands Harbor

LOE ID:

262201

Pollutant:

Heptachlor

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The heptachlor criterion to protect human health from the consumption of organisms only is 0.00021 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-21 (Oxn_CI-21_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135664, Heptachlor	Region 4
Channel Islands Harbor

LOE ID:

262098

Pollutant:

Heptachlor

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The heptachlor criterion to protect human health from the consumption of organisms only is 0.00021 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-06 (Oxn_CI-06_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135664, Heptachlor	Region 4
Channel Islands Harbor

LOE ID:

262014

Pollutant:

Heptachlor

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The heptachlor criterion to protect human health from the consumption of organisms only is 0.00021 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-03 (Oxn_CI-03_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135664, Heptachlor	Region 4
Channel Islands Harbor

LOE ID:

262115

Pollutant:

Heptachlor

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The heptachlor criterion to protect human health from the consumption of organisms only is 0.00021 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-19 (Oxn_CI-19_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135664, Heptachlor	Region 4
Channel Islands Harbor

LOE ID:

262022

Pollutant:

Heptachlor

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The heptachlor criterion to protect human health from the consumption of organisms only is 0.00021 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-13 (Oxn_CI-13_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135664, Heptachlor	Region 4
Channel Islands Harbor

LOE ID:

262116

Pollutant:

Heptachlor

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The heptachlor criterion to protect human health from the consumption of organisms only is 0.00021 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-07 (Oxn_CI-07_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY


DECISION ID	135665	Region 4
Channel Islands Harbor

Pollutant:	Heptachlor epoxide
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)(2018)
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.

Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.

Line of Evidence (LOE) for Decision ID 135665, Heptachlor epoxide	Region 4
Channel Islands Harbor

LOE ID:

262101

Pollutant:

Heptachlor epoxide

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor Epoxide. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The heptachlor epoxide criterion for the protection of human health from consumption of organisms only is 0.00011 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-07 (Oxn_CI-07_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135665, Heptachlor epoxide	Region 4
Channel Islands Harbor

LOE ID:

262102

Pollutant:

Heptachlor epoxide

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor Epoxide. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The heptachlor epoxide criterion for the protection of human health from consumption of organisms only is 0.00011 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-31 (Oxn_CI-31_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135665, Heptachlor epoxide	Region 4
Channel Islands Harbor

LOE ID:

262475

Pollutant:

Heptachlor epoxide

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor Epoxide. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The heptachlor epoxide criterion for the protection of human health from consumption of organisms only is 0.00011 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-09 (Oxn_CI-09_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135665, Heptachlor epoxide	Region 4
Channel Islands Harbor

LOE ID:

262209

Pollutant:

Heptachlor epoxide

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor Epoxide. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The heptachlor epoxide criterion for the protection of human health from consumption of organisms only is 0.00011 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-18 (Oxn_CI-18_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135665, Heptachlor epoxide	Region 4
Channel Islands Harbor

LOE ID:

262211

Pollutant:

Heptachlor epoxide

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor Epoxide. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The heptachlor epoxide criterion for the protection of human health from consumption of organisms only is 0.00011 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-03 (Oxn_CI-03_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135665, Heptachlor epoxide	Region 4
Channel Islands Harbor

LOE ID:

262212

Pollutant:

Heptachlor epoxide

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor Epoxide. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The heptachlor epoxide criterion for the protection of human health from consumption of organisms only is 0.00011 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-06 (Oxn_CI-06_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135665, Heptachlor epoxide	Region 4
Channel Islands Harbor

LOE ID:

262120

Pollutant:

Heptachlor epoxide

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor Epoxide. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The heptachlor epoxide criterion for the protection of human health from consumption of organisms only is 0.00011 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-26 (Oxn_CI-26_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135665, Heptachlor epoxide	Region 4
Channel Islands Harbor

LOE ID:

262123

Pollutant:

Heptachlor epoxide

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor Epoxide. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The heptachlor epoxide criterion for the protection of human health from consumption of organisms only is 0.00011 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-23 (Oxn_CI-23_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135665, Heptachlor epoxide	Region 4
Channel Islands Harbor

LOE ID:

262229

Pollutant:

Heptachlor epoxide

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor Epoxide. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The heptachlor epoxide criterion for the protection of human health from consumption of organisms only is 0.00011 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-27 (Oxn_CI-27_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135665, Heptachlor epoxide	Region 4
Channel Islands Harbor

LOE ID:

261941

Pollutant:

Heptachlor epoxide

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor Epoxide. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The heptachlor epoxide criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saltwater is 0.0036 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-07 (Oxn_CI-07_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135665, Heptachlor epoxide	Region 4
Channel Islands Harbor

LOE ID:

261920

Pollutant:

Heptachlor epoxide

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor Epoxide. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The heptachlor epoxide criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saltwater is 0.0036 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-23 (Oxn_CI-23_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135665, Heptachlor epoxide	Region 4
Channel Islands Harbor

LOE ID:

262417

Pollutant:

Heptachlor epoxide

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor Epoxide. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The heptachlor epoxide criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saltwater is 0.0036 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-12 (Oxn_CI-12_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135665, Heptachlor epoxide	Region 4
Channel Islands Harbor

LOE ID:

262420

Pollutant:

Heptachlor epoxide

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor Epoxide. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The heptachlor epoxide criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saltwater is 0.0036 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-10 (Oxn_CI-10_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135665, Heptachlor epoxide	Region 4
Channel Islands Harbor

LOE ID:

262510

Pollutant:

Heptachlor epoxide

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor Epoxide. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The heptachlor epoxide criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saltwater is 0.0036 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-09 (Oxn_CI-09_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135665, Heptachlor epoxide	Region 4
Channel Islands Harbor

LOE ID:

262512

Pollutant:

Heptachlor epoxide

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor Epoxide. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The heptachlor epoxide criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saltwater is 0.0036 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-24 (Oxn_CI-24_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135665, Heptachlor epoxide	Region 4
Channel Islands Harbor

LOE ID:

262146

Pollutant:

Heptachlor epoxide

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor Epoxide. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The heptachlor epoxide criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saltwater is 0.0036 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-08 (Oxn_CI-08_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135665, Heptachlor epoxide	Region 4
Channel Islands Harbor

LOE ID:

262254

Pollutant:

Heptachlor epoxide

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor Epoxide. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The heptachlor epoxide criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saltwater is 0.0036 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-13 (Oxn_CI-13_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135665, Heptachlor epoxide	Region 4
Channel Islands Harbor

LOE ID:

262059

Pollutant:

Heptachlor epoxide

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor Epoxide. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The heptachlor epoxide criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saltwater is 0.0036 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-26 (Oxn_CI-26_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135665, Heptachlor epoxide	Region 4
Channel Islands Harbor

LOE ID:

262438

Pollutant:

Heptachlor epoxide

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor Epoxide. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The heptachlor epoxide criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saltwater is 0.0036 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-20 (Oxn_CI-20_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135665, Heptachlor epoxide	Region 4
Channel Islands Harbor

LOE ID:

82819

Pollutant:

Heptachlor epoxide

LOE Subgroup:

Pollutant-Tissue

Matrix:

Tissue

Fraction:

Shellfish

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

Shellfish surveys

Data Used to Assess Water Quality:

The result was not used in the assessment because the laboratory data reporting limit was above the objective and therefore the results could not be quantified with the level of certainty required by the Listing Policy.

Data Reference:

RWB4 Miscellaneous Ventura Coastal 2006

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The modified OEHHA Fish Contaminant Goal for heptachlor epoxide in shellfish tissue is 1.4 ppb. This screening level assumes an average body weight of 70 kg and a consumption rate of 21 g/day for a 30 year exposure over a 70-year lifetime. This constituent is a carcinogen therefore the risk level is set to one in a million. (Brodberg, R.K., and G.A. Pollock, 1999; Klasing, S., and R. Brodberg, 2008; OEHHA, 1999)

Guideline Reference:

Public Health Goal for Heptachlor and Heptachlor Epoxide in Drinking Water

Guideline Reference:

Prevalence of Selected Target Chemical Contaminants in Sport Fish From Two California Lakes: Public health designed screening study. Sacramento, CA: Office of Environmental Health Hazard Assessment

Guideline Reference:

Development of Fish Contaminant Goals and Advisory Tissue Levels for Common Contaminants in California Sport Fish: Chlordane, DDTs, Dieldrin, Methylmercury, PCBs, Selenium, and Toxaphene

Spatial Representation:

Data was collected at one station: Channel Islands Harbor 5 - 410VHCHN5.

Temporal Representation:

Data was collected on a single day 2/28/2007.

Environmental Conditions:

QAPP Information:

Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002

QAPP Information Reference(s):

Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version)

Line of Evidence (LOE) for Decision ID 135665, Heptachlor epoxide	Region 4
Channel Islands Harbor

LOE ID:

83683

Pollutant:

Heptachlor epoxide

LOE Subgroup:

Pollutant-Tissue

Matrix:

Tissue

Fraction:

Fish fillet

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

Fish tissue analysis

Data Used to Assess Water Quality:

Data Reference:

RWB4 Miscellaneous Ventura Coastal 2006

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The modified OEHHA Fish Contaminant Goal for heptachlor epoxide in fish tissue is 0.93 ppb. This screening level assumes an average body weight of 70 kg and a consumption rate of 32 g/day for a 30 year exposure over a 70-year lifetime. This constituent is a carcinogen therefore the risk level is set to one in a million. A cooking reduction factor of 1 is applied for skin-off fillets. (Klasing, S., and R. Brodberg, 2008; OEHHA, 1999)

Guideline Reference:

Development of Fish Contaminant Goals and Advisory Tissue Levels for Common Contaminants in California Sport Fish: Chlordane, DDTs, Dieldrin, Methylmercury, PCBs, Selenium, and Toxaphene

Guideline Reference:

Public Health Goal for Heptachlor and Heptachlor Epoxide in Drinking Water

Spatial Representation:

Samples are collected by hand from three sub-locations (A,B,C) from site 410VHCHN5. The three samples per site were averaged prior to assessment.

Temporal Representation:

Representative samples of locally abundant species were collected during February 28, 2007.

Environmental Conditions:

QAPP Information:

Samples were collected as part of the State Water Board's Surface Water Ambient Monitoring Program.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 135665, Heptachlor epoxide	Region 4
Channel Islands Harbor

LOE ID:

83682

Pollutant:

Heptachlor epoxide

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

State Water Board staff assessed 4 data for Channel Islands Harbor to determine beneficial use support and results are as follows: 0 of 0 samples exceed the criterion for Heptachlor epoxide. One sample result(s) were not used in the assessment because the laboratory data reporting limit(s) was above the objective and therefore the results could not be quantified with the level of certainty required by the Listing Policy.

Data Reference:

RWB4 Miscellaneous Ventura Coastal 2006

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

The Heptachlor epoxide criteria for the protection of human health from consumption of organisms only is 0.00011 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Data for this line of evidence for Channel Islands Harbor was collected at 1 monitoring site [ Channel Islands Harbor 5 - 410VHCHN5]

Temporal Representation:

Data was collected on a single day 10/12/2006.

Environmental Conditions:

Staff is not aware of any special conditions that might affect interpretation of the data.

QAPP Information:

The SWAMP QAPP (2008) was followed.

QAPP Information Reference(s):

Surface Water Ambient Monitoring Program Quality Assurance Program Plan

Line of Evidence (LOE) for Decision ID 135665, Heptachlor epoxide	Region 4
Channel Islands Harbor

LOE ID:

83681

Pollutant:

Heptachlor epoxide

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

State Water Board staff assessed 4 data for Channel Islands Harbor to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Heptachlor epoxide.

Data Reference:

RWB4 Miscellaneous Ventura Coastal 2006

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

The Heptachlor epoxide criteria for the protection of saltwater aquatic life is 0.0036 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Data for this line of evidence for Channel Islands Harbor was collected at 1 monitoring site [ Channel Islands Harbor 5 - 410VHCHN5]

Temporal Representation:

Data was collected on a single day 10/12/2006.

Environmental Conditions:

Staff is not aware of any special conditions that might affect interpretation of the data.

QAPP Information:

The SWAMP QAPP (2008) was followed.

QAPP Information Reference(s):

Surface Water Ambient Monitoring Program Quality Assurance Program Plan

Line of Evidence (LOE) for Decision ID 135665, Heptachlor epoxide	Region 4
Channel Islands Harbor

LOE ID:

262526

Pollutant:

Heptachlor epoxide

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor Epoxide. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The heptachlor epoxide criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saltwater is 0.0036 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-03 (Oxn_CI-03_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135665, Heptachlor epoxide	Region 4
Channel Islands Harbor

LOE ID:

262271

Pollutant:

Heptachlor epoxide

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor Epoxide. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The heptachlor epoxide criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saltwater is 0.0036 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-14 (Oxn_CI-14_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135665, Heptachlor epoxide	Region 4
Channel Islands Harbor

LOE ID:

262361

Pollutant:

Heptachlor epoxide

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor Epoxide. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The heptachlor epoxide criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saltwater is 0.0036 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-02 (Oxn_CI-02_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-11-29

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135665, Heptachlor epoxide	Region 4
Channel Islands Harbor

LOE ID:

262363

Pollutant:

Heptachlor epoxide

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor Epoxide. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The heptachlor epoxide criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saltwater is 0.0036 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-31 (Oxn_CI-31_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135665, Heptachlor epoxide	Region 4
Channel Islands Harbor

LOE ID:

262457

Pollutant:

Heptachlor epoxide

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor Epoxide. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The heptachlor epoxide criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saltwater is 0.0036 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-18 (Oxn_CI-18_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135665, Heptachlor epoxide	Region 4
Channel Islands Harbor

LOE ID:

262459

Pollutant:

Heptachlor epoxide

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor Epoxide. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The heptachlor epoxide criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saltwater is 0.0036 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-19 (Oxn_CI-19_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135665, Heptachlor epoxide	Region 4
Channel Islands Harbor

LOE ID:

262472

Pollutant:

Heptachlor epoxide

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor Epoxide. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The heptachlor epoxide criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saltwater is 0.0036 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-06 (Oxn_CI-06_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135665, Heptachlor epoxide	Region 4
Channel Islands Harbor

LOE ID:

262473

Pollutant:

Heptachlor epoxide

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor Epoxide. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The heptachlor epoxide criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saltwater is 0.0036 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-11 (Oxn_CI-11_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135665, Heptachlor epoxide	Region 4
Channel Islands Harbor

LOE ID:

262398

Pollutant:

Heptachlor epoxide

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor Epoxide. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The heptachlor epoxide criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saltwater is 0.0036 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-21 (Oxn_CI-21_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135665, Heptachlor epoxide	Region 4
Channel Islands Harbor

LOE ID:

262400

Pollutant:

Heptachlor epoxide

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor Epoxide. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The heptachlor epoxide criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saltwater is 0.0036 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-15 (Oxn_CI-15_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135665, Heptachlor epoxide	Region 4
Channel Islands Harbor

LOE ID:

262402

Pollutant:

Heptachlor epoxide

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor Epoxide. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The heptachlor epoxide criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saltwater is 0.0036 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-22 (Oxn_CI-22_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135665, Heptachlor epoxide	Region 4
Channel Islands Harbor

LOE ID:

262491

Pollutant:

Heptachlor epoxide

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor Epoxide. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The heptachlor epoxide criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saltwater is 0.0036 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-27 (Oxn_CI-27_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135665, Heptachlor epoxide	Region 4
Channel Islands Harbor

LOE ID:

262230

Pollutant:

Heptachlor epoxide

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor Epoxide. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The heptachlor epoxide criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saltwater is 0.0036 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-25 (Oxn_CI-25_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135665, Heptachlor epoxide	Region 4
Channel Islands Harbor

LOE ID:

262493

Pollutant:

Heptachlor epoxide

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor Epoxide. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The heptachlor epoxide criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saltwater is 0.0036 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-16 (Oxn_CI-16_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135665, Heptachlor epoxide	Region 4
Channel Islands Harbor

LOE ID:

262494

Pollutant:

Heptachlor epoxide

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor Epoxide. Although a total of 4 samples were collected, 4 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The heptachlor epoxide criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saltwater is 0.0036 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-17 (Oxn_CI-17_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2019-12-04

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135665, Heptachlor epoxide	Region 4
Channel Islands Harbor

LOE ID:

261940

Pollutant:

Heptachlor epoxide

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor Epoxide. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The heptachlor epoxide criterion for the protection of human health from consumption of organisms only is 0.00011 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-16 (Oxn_CI-16_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135665, Heptachlor epoxide	Region 4
Channel Islands Harbor

LOE ID:

261943

Pollutant:

Heptachlor epoxide

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor Epoxide. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The heptachlor epoxide criterion for the protection of human health from consumption of organisms only is 0.00011 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-22 (Oxn_CI-22_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135665, Heptachlor epoxide	Region 4
Channel Islands Harbor

LOE ID:

261961

Pollutant:

Heptachlor epoxide

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor Epoxide. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The heptachlor epoxide criterion for the protection of human health from consumption of organisms only is 0.00011 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-21 (Oxn_CI-21_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135665, Heptachlor epoxide	Region 4
Channel Islands Harbor

LOE ID:

261965

Pollutant:

Heptachlor epoxide

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor Epoxide. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The heptachlor epoxide criterion for the protection of human health from consumption of organisms only is 0.00011 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-14 (Oxn_CI-14_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135665, Heptachlor epoxide	Region 4
Channel Islands Harbor

LOE ID:

261921

Pollutant:

Heptachlor epoxide

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor Epoxide. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The heptachlor epoxide criterion for the protection of human health from consumption of organisms only is 0.00011 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-20 (Oxn_CI-20_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135665, Heptachlor epoxide	Region 4
Channel Islands Harbor

LOE ID:

262231

Pollutant:

Heptachlor epoxide

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor Epoxide. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The heptachlor epoxide criterion for the protection of human health from consumption of organisms only is 0.00011 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-24 (Oxn_CI-24_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135665, Heptachlor epoxide	Region 4
Channel Islands Harbor

LOE ID:

262232

Pollutant:

Heptachlor epoxide

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor Epoxide. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The heptachlor epoxide criterion for the protection of human health from consumption of organisms only is 0.00011 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-10 (Oxn_CI-10_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135665, Heptachlor epoxide	Region 4
Channel Islands Harbor

LOE ID:

262233

Pollutant:

Heptachlor epoxide

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor Epoxide. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The heptachlor epoxide criterion for the protection of human health from consumption of organisms only is 0.00011 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-02 (Oxn_CI-02_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-11-29

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135665, Heptachlor epoxide	Region 4
Channel Islands Harbor

LOE ID:

262418

Pollutant:

Heptachlor epoxide

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor Epoxide. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The heptachlor epoxide criterion for the protection of human health from consumption of organisms only is 0.00011 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-19 (Oxn_CI-19_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135665, Heptachlor epoxide	Region 4
Channel Islands Harbor

LOE ID:

262439

Pollutant:

Heptachlor epoxide

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor Epoxide. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The heptachlor epoxide criterion for the protection of human health from consumption of organisms only is 0.00011 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-15 (Oxn_CI-15_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135665, Heptachlor epoxide	Region 4
Channel Islands Harbor

LOE ID:

262360

Pollutant:

Heptachlor epoxide

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor Epoxide. Although a total of 4 samples were collected, 4 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The heptachlor epoxide criterion for the protection of human health from consumption of organisms only is 0.00011 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-17 (Oxn_CI-17_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2019-12-04

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135665, Heptachlor epoxide	Region 4
Channel Islands Harbor

LOE ID:

262362

Pollutant:

Heptachlor epoxide

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor Epoxide. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The heptachlor epoxide criterion for the protection of human health from consumption of organisms only is 0.00011 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-13 (Oxn_CI-13_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135665, Heptachlor epoxide	Region 4
Channel Islands Harbor

LOE ID:

262191

Pollutant:

Heptachlor epoxide

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor Epoxide. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The heptachlor epoxide criterion for the protection of human health from consumption of organisms only is 0.00011 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-11 (Oxn_CI-11_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135665, Heptachlor epoxide	Region 4
Channel Islands Harbor

LOE ID:

262381

Pollutant:

Heptachlor epoxide

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor Epoxide. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The heptachlor epoxide criterion for the protection of human health from consumption of organisms only is 0.00011 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-08 (Oxn_CI-08_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135665, Heptachlor epoxide	Region 4
Channel Islands Harbor

LOE ID:

262099

Pollutant:

Heptachlor epoxide

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor Epoxide. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The heptachlor epoxide criterion for the protection of human health from consumption of organisms only is 0.00011 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-25 (Oxn_CI-25_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135665, Heptachlor epoxide	Region 4
Channel Islands Harbor

LOE ID:

262100

Pollutant:

Heptachlor epoxide

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor Epoxide. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The heptachlor epoxide criterion for the protection of human health from consumption of organisms only is 0.00011 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-12 (Oxn_CI-12_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY


DECISION ID	135666	Region 4
Channel Islands Harbor

Pollutant:	Hexachlorobenzene/ HCB
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)(2018)
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence are necessary to assess listing status. 3 lines of evidence are available in the administrative record to assess this pollutant. 0 of 1 sample exceeded the CRITERIA. 0 of 1 sample exceeded the CRITERIA. 0 of 0 sample exceeded the CRITERIA. Based on the readily available data and information, the weight of evidence indicates that there is insufficient justification for placing this water segment-pollutant combination on the CWA section 303(d) List. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. 0 of 1, 0 of 1 and 0 of 0 sample exceeded the CRITERIA and this sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is fully supported using table 3.1. 4. Pursuant to SECTION 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.

Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.

Line of Evidence (LOE) for Decision ID 135666, Hexachlorobenzene/ HCB	Region 4
Channel Islands Harbor

LOE ID:

83684

Pollutant:

Hexachlorobenzene/ HCB

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

State Water Board staff assessed 4 data for Channel Islands Harbor to determine beneficial use support and results are as follows: 0 of 0 samples exceed the criterion for Hexachlorobenzene. One sample result(s) were not used in the assessment because the laboratory data reporting limit(s) was above the objective and therefore the results could not be quantified with the level of certainty required by the Listing Policy.

Data Reference:

RWB4 Miscellaneous Ventura Coastal 2006

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

The Hexachlorobenzene criteria for the protection of human health from consumption of organisms only is 0.00077 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Data for this line of evidence for Channel Islands Harbor was collected at 1 monitoring site [ Channel Islands Harbor 5 - 410VHCHN5]

Temporal Representation:

Data was collected on a single day 10/12/2006.

Environmental Conditions:

Staff is not aware of any special conditions that might affect interpretation of the data.

QAPP Information:

The SWAMP QAPP (2008) was followed.

QAPP Information Reference(s):

Surface Water Ambient Monitoring Program Quality Assurance Program Plan

Line of Evidence (LOE) for Decision ID 135666, Hexachlorobenzene/ HCB	Region 4
Channel Islands Harbor

LOE ID:

83685

Pollutant:

Hexachlorobenzene/ HCB

LOE Subgroup:

Pollutant-Tissue

Matrix:

Tissue

Fraction:

Fish fillet

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

Fish tissue analysis

Data Used to Assess Water Quality:

Data Reference:

RWB4 Miscellaneous Ventura Coastal 2006

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The modified OEHHA Fish Contaminant Goal for hexachlorobenzene in fish tissue is 2.8 ppb. This screening level assumes an average body weight of 70 kg and a consumption rate of 32 g/day for a 30 year exposure over a 70-year lifetime. This constituent is a carcinogen therefore the risk level is set to one in a million. A cooking reduction factor of 1 is applied for skin-off fillets. (Klasing, S., and R. Brodberg, 2008; OEHHA, 2005)

Guideline Reference:

Development of Fish Contaminant Goals and Advisory Tissue Levels for Common Contaminants in California Sport Fish: Chlordane, DDTs, Dieldrin, Methylmercury, PCBs, Selenium, and Toxaphene

Guideline Reference:

Air Toxics Hotspots Program Risk Assessment Guidelines. Part ll Technical Support Document for Describing Available Cancer Potency Values.

Spatial Representation:

Samples are collected by hand from three sub-locations (A,B,C) from site 410VHCHN5. The three samples per site were averaged prior to assessment.

Temporal Representation:

Representative samples of locally abundant species were collected on February 28, 2007.

Environmental Conditions:

QAPP Information:

Samples were collected as part of the State Water Board's Surface Water Ambient Monitoring Program.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 135666, Hexachlorobenzene/ HCB	Region 4
Channel Islands Harbor

LOE ID:

82778

Pollutant:

Hexachlorobenzene/ HCB

LOE Subgroup:

Pollutant-Tissue

Matrix:

Tissue

Fraction:

Shellfish

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

Shellfish surveys

Data Used to Assess Water Quality:

The one sample did not exceed the guideline.

Data Reference:

RWB4 Miscellaneous Ventura Coastal 2006

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The modified OEHHA Fish Contaminant Goal for hexachlorobenzene in shellfish tissue is 4.3 ppb. This screening level assumes an average body weight of 70 kg and a consumption rate of 21 g/day for a 30 year exposure over a 70-year lifetime. This constituent is a carcinogen therefore the risk level is set to one in a million. (Brodberg, R.K., and G.A. Pollock, 1999; Klasing, S., and R. Brodberg, 2008; OEHHA, 2005)

Guideline Reference:

Prevalence of Selected Target Chemical Contaminants in Sport Fish From Two California Lakes: Public health designed screening study. Sacramento, CA: Office of Environmental Health Hazard Assessment

Guideline Reference:

Development of Fish Contaminant Goals and Advisory Tissue Levels for Common Contaminants in California Sport Fish: Chlordane, DDTs, Dieldrin, Methylmercury, PCBs, Selenium, and Toxaphene

Guideline Reference:

Air Toxics Hotspots Program Risk Assessment Guidelines. Part ll Technical Support Document for Describing Available Cancer Potency Values.

Spatial Representation:

Data for was collected at one station: Channel Islands Harbor 5 - 410VHCHN5.

Temporal Representation:

Data was collected on a single day 2/28/2007.

Environmental Conditions:

QAPP Information:

Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002

QAPP Information Reference(s):

Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version)

Line of Evidence (LOE) for Decision ID 135666, Hexachlorobenzene/ HCB	Region 4
Channel Islands Harbor

LOE ID:

262310

Pollutant:

Hexachlorobenzene/ HCB

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Hexachlorobenzene. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The hexachlorobenzene criterion for the protection of human health from consumption of organisms only is 0.00077 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-17 (Oxn_CI-17_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2019-12-04 to 2019-12-04

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY


DECISION ID	135667	Region 4
Channel Islands Harbor

Pollutant:	Hexachlorobutadiene
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.

Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.

Line of Evidence (LOE) for Decision ID 135667, Hexachlorobutadiene	Region 4
Channel Islands Harbor

LOE ID:

262345

Pollutant:

Hexachlorobutadiene

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The hexachlorobutadiene criterion for the protection of human health from consumption of organisms only is 50 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-17 (Oxn_CI-17_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2019-12-04 and 2019-12-04

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY


DECISION ID	135722	Region 4
Channel Islands Harbor

Pollutant:	Hexachlorocyclohexane (HCH), alpha
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.

Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.

Line of Evidence (LOE) for Decision ID 135722, Hexachlorocyclohexane (HCH), alpha	Region 4
Channel Islands Harbor

LOE ID:

262105

Pollutant:

Hexachlorocyclohexane (HCH), alpha

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for HCH, alpha-. Although a total of 3 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The alpha-HCH (alpha-BHC) criterion for the protection of human health from consumption of organisms only is 0.013 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (Oxn_CI-17).

Temporal Representation:

Data for this waterbody was collected over the date range 2018-10-08 to 2019-12-04

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135722, Hexachlorocyclohexane (HCH), alpha	Region 4
Channel Islands Harbor

LOE ID:

262108

Pollutant:

Hexachlorocyclohexane (HCH), alpha

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for HCH, alpha-. Although a total of 3 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The alpha-HCH (alpha-BHC) criterion for the protection of human health from consumption of organisms only is 0.013 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (Oxn_CI-02).

Temporal Representation:

Data for this waterbody was collected over the date range 2018-10-08 to 2018-11-29

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY


DECISION ID	135721	Region 4
Channel Islands Harbor

Pollutant:	Hexachlorocyclohexane (HCH), beta
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.

Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.

Line of Evidence (LOE) for Decision ID 135721, Hexachlorocyclohexane (HCH), beta	Region 4
Channel Islands Harbor

LOE ID:

262214

Pollutant:

Hexachlorocyclohexane (HCH), beta

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for HCH, beta-. Although a total of 3 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The beta-HCH (beta-BHC) criterion for the protection of human health from consumption of organisms only is 0.046 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (Oxn_CI-17).

Temporal Representation:

Data for this waterbody was collected over the date range 2018-10-08 to 2019-12-04

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY


DECISION ID	135668	Region 4
Channel Islands Harbor

Pollutant:	Hexachlorocyclopentadiene
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.

Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.

Line of Evidence (LOE) for Decision ID 135668, Hexachlorocyclopentadiene	Region 4
Channel Islands Harbor

LOE ID:

262348

Pollutant:

Hexachlorocyclopentadiene

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The hexachlorocyclopentadiene criterion for the protection of human health from consumption of organisms only is 17,000 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-17 (Oxn_CI-17_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2019-12-04 and 2019-12-04

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY


DECISION ID	135669	Region 4
Channel Islands Harbor

Pollutant:	Hexachloroethane
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.

Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.

Line of Evidence (LOE) for Decision ID 135669, Hexachloroethane	Region 4
Channel Islands Harbor

LOE ID:

262349

Pollutant:

Hexachloroethane

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The hexachloroethane criterion for the protection of human health from consumption of organisms only is 8.9 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-17 (Oxn_CI-17_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2019-12-04 and 2019-12-04

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY


DECISION ID	135670	Region 4
Channel Islands Harbor

Pollutant:	Indeno[1,2,3-cd]pyrene
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)(2018)
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence are necessary to assess listing status. 1 line of evidence are available in the administrative record to assess this pollutant. 0 of 1 sample exceeded the CRITERIA. Based on the readily available data and information, the weight of evidence indicates that there is insufficient justification for placing this water segment-pollutant combination on the CWA section 303(d) List. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. 0 of 1 smple exceeded the CRITERIA and this sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is fully supported using table 3.1. 4. Pursuant to SECTION 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.

Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.

Line of Evidence (LOE) for Decision ID 135670, Indeno[1,2,3-cd]pyrene	Region 4
Channel Islands Harbor

LOE ID:

83630

Pollutant:

Indeno[1,2,3-cd]pyrene

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

State Water Board staff assessed 4 data for Channel Islands Harbor to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Indeno(1, 2, 3-C, D)Pyrene.

Data Reference:

RWB4 Miscellaneous Ventura Coastal 2006

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

The Indeno(1, 2, 3-C, D)Pyrene criteria for the protection of human health from consumption of organisms only is 0.049 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Data for this line of evidence for Channel Islands Harbor was collected at 1 monitoring site [ Channel Islands Harbor 5 - 410VHCHN5]

Temporal Representation:

Data was collected on a single day 10/12/2006.

Environmental Conditions:

Staff is not aware of any special conditions that might affect interpretation of the data.

QAPP Information:

The SWAMP QAPP (2008) was followed.

QAPP Information Reference(s):

Surface Water Ambient Monitoring Program Quality Assurance Program Plan

Line of Evidence (LOE) for Decision ID 135670, Indeno[1,2,3-cd]pyrene	Region 4
Channel Islands Harbor

LOE ID:

262370

Pollutant:

Indeno[1,2,3-cd]pyrene

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Indeno(1,2,3-c,d)pyrene. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The indeno(1, 2, 3-c,d)pyrene criterion for the protection of human health from consumption of organisms only is 0.049 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-17 (Oxn_CI-17_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2019-12-04 to 2019-12-04

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY


DECISION ID	135671	Region 4
Channel Islands Harbor

Pollutant:	Isophorone
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.

Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.

Line of Evidence (LOE) for Decision ID 135671, Isophorone	Region 4
Channel Islands Harbor

LOE ID:

262654

Pollutant:

Isophorone

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The isophorone criterion for the protection of human health from consumption of organisms only is 600 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-17 (Oxn_CI-17_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2019-12-04 and 2019-12-04

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY


DECISION ID	135673	Region 4
Channel Islands Harbor

Pollutant:	Lindane/gamma Hexachlorocyclohexane (gamma-HCH)
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)(2018)
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.

Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.

Line of Evidence (LOE) for Decision ID 135673, Lindane/gamma Hexachlorocyclohexane (gamma-HCH)	Region 4
Channel Islands Harbor

LOE ID:

83589

Pollutant:

Lindane/gamma Hexachlorocyclohexane (gamma-HCH)

LOE Subgroup:

Pollutant-Tissue

Matrix:

Tissue

Fraction:

Fish fillet

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

Fish tissue analysis

Data Used to Assess Water Quality:

Data Reference:

RWB4 Miscellaneous Ventura Coastal 2006

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The modified OEHHA Fish Contaminant Goal for lindane in fish tissue is 4.6 ppb. This screening level assumes an average body weight of 70 kg and a consumption rate of 32 g/day for a 30 year exposure over a 70-year lifetime. This constituent is a carcinogen therefore the risk level is set to one in a million. A cooking reduction factor of 1 is applied for skin-off fillets. (Klasing, S., and R. Brodberg, 2008; OEHHA, 2005)

Guideline Reference:

Development of Fish Contaminant Goals and Advisory Tissue Levels for Common Contaminants in California Sport Fish: Chlordane, DDTs, Dieldrin, Methylmercury, PCBs, Selenium, and Toxaphene

Guideline Reference:

Air Toxics Hotspots Program Risk Assessment Guidelines. Part ll Technical Support Document for Describing Available Cancer Potency Values.

Spatial Representation:

Samples are collected by hand from three sub-locations (A,B,C) from site 410VHCHN5. The three samples per site were averaged prior to assessment.

Temporal Representation:

Representative samples of locally abundant species were collected on May 8, 2007.

Environmental Conditions:

QAPP Information:

Samples were collected as part of the State Water Board's Surface Water Ambient Monitoring Program.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 135673, Lindane/gamma Hexachlorocyclohexane (gamma-HCH)	Region 4
Channel Islands Harbor

LOE ID:

82818

Pollutant:

Lindane/gamma Hexachlorocyclohexane (gamma-HCH)

LOE Subgroup:

Pollutant-Tissue

Matrix:

Tissue

Fraction:

Shellfish

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

Shellfish surveys

Data Used to Assess Water Quality:

The sample did not exceed the guideline.

Data Reference:

RWB4 Miscellaneous Ventura Coastal 2006

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The modified OEHHA Fish Contaminant Goal for lindane in shellfish tissue is 7.1 ppb. This screening level assumes an average body weight of 70 kg and a consumption rate of 21 g/day for a 30 year exposure over a 70-year lifetime. This constituent is a carcinogen therefore the risk level is set to one in a million. (Brodberg, R.K., and G.A. Pollock, 1999; Klasing, S., and R. Brodberg, 2008; OEHHA, 2005)

Guideline Reference:

Prevalence of Selected Target Chemical Contaminants in Sport Fish From Two California Lakes: Public health designed screening study. Sacramento, CA: Office of Environmental Health Hazard Assessment

Guideline Reference:

Development of Fish Contaminant Goals and Advisory Tissue Levels for Common Contaminants in California Sport Fish: Chlordane, DDTs, Dieldrin, Methylmercury, PCBs, Selenium, and Toxaphene

Guideline Reference:

Air Toxics Hotspots Program Risk Assessment Guidelines. Part ll Technical Support Document for Describing Available Cancer Potency Values.

Spatial Representation:

Data was collected at one station: Channel Islands Harbor 5 - 410VHCHN5.

Temporal Representation:

Data was collected on a single day 2/28/2007.

Environmental Conditions:

QAPP Information:

Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002

QAPP Information Reference(s):

Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version)

Line of Evidence (LOE) for Decision ID 135673, Lindane/gamma Hexachlorocyclohexane (gamma-HCH)	Region 4
Channel Islands Harbor

LOE ID:

83588

Pollutant:

Lindane/gamma Hexachlorocyclohexane (gamma-HCH)

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Boardstaff assessed SWAMP data for Channel Islands Harbor to determine beneficial use support and results are as follows: 0 of 5 samples exceed the criterion for HCH, gamma.

Data Reference:

RWB4 Miscellaneous Ventura Coastal 2006

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

In marine and estuarine sediments the sediment quality guideline (predictive of sediment toxicity for sediment-dwelling organisms) for HCH, gamma(Lindane; BHC, gamma) is 0.37 ug/g oc (Fairey et al., 2001).

Guideline Reference:

An evaluation of methods for calculating mean sediment quality guideline quotients as indicators of contamination and acute toxicity to amphipods by chemical mixtures. Environmental Toxicology and Chemistry. 20(10): 2276-2286

Spatial Representation:

Temporal Representation:

Data was collected over the time period 10/11/2006-10/12/2006.

Environmental Conditions:

Staff is not aware of any special conditions that might affect interpretation of the data.

QAPP Information:

2002 QAMP (Quality Assurance Management Plan) for the State of California's Surface Water Ambient Monitoring Program

QAPP Information Reference(s):

Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version)

Line of Evidence (LOE) for Decision ID 135673, Lindane/gamma Hexachlorocyclohexane (gamma-HCH)	Region 4
Channel Islands Harbor

LOE ID:

262131

Pollutant:

Lindane/gamma Hexachlorocyclohexane (gamma-HCH)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support and the results are as follows: 0 of the 3 samples exceeded the water quality threshold for HCH, gamma-. Although a total of 4 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The gamma-BHC (Lindane) criterion maximum concentration (expressed as a 1-day average) to protect aquatic life in saltwater is 0.08 ug/L. The criterion of 0.16 ug/L provided in the California Toxics Rule is an instantaneous maximum concentration and was divided by 2 in order to better represent a criterion maximum concentration (CMC) value as specified in footnote (g) of Table (b)(1) of the California Toxics Rule (2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (Oxn_CI-17).

Temporal Representation:

Data for this waterbody was collected over the date range 2018-10-08 to 2019-12-04

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135673, Lindane/gamma Hexachlorocyclohexane (gamma-HCH)	Region 4
Channel Islands Harbor

LOE ID:

248554

Pollutant:

Lindane/gamma Hexachlorocyclohexane (gamma-HCH)

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The sediment quality guideline for HCH, gamma(Lindane; BHC, gamma) is 0.37 ug/g organic carbon (Fairey et al., 2001).

Guideline Reference:

Spatial Representation:

Data were collected from 1 station(s). Station Code(s): 410CHN005 (Channel Islands Harbor CI5).

Temporal Representation:

Data for this waterbody were collected over the date range 2017-05-24 to 2017-05-24

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 135673, Lindane/gamma Hexachlorocyclohexane (gamma-HCH)	Region 4
Channel Islands Harbor

LOE ID:

248613

Pollutant:

Lindane/gamma Hexachlorocyclohexane (gamma-HCH)

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The sediment quality guideline for HCH, gamma(Lindane; BHC, gamma) is 0.37 ug/g organic carbon (Fairey et al., 2001).

Guideline Reference:

Spatial Representation:

Data were collected from 1 station(s). Station Code(s): 410CHN002 (Channel Islands Harbor CI2).

Temporal Representation:

Data for this waterbody were collected over the date range 2017-05-24 to 2017-05-24

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 135673, Lindane/gamma Hexachlorocyclohexane (gamma-HCH)	Region 4
Channel Islands Harbor

LOE ID:

248715

Pollutant:

Lindane/gamma Hexachlorocyclohexane (gamma-HCH)

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The sediment quality guideline for HCH, gamma(Lindane; BHC, gamma) is 0.37 ug/g organic carbon (Fairey et al., 2001).

Guideline Reference:

Spatial Representation:

Data were collected from 1 station(s). Station Code(s): 410CHN003 (Channel Islands Harbor CI3).

Temporal Representation:

Data for this waterbody were collected over the date range 2017-05-24 to 2017-05-24

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 135673, Lindane/gamma Hexachlorocyclohexane (gamma-HCH)	Region 4
Channel Islands Harbor

LOE ID:

248576

Pollutant:

Lindane/gamma Hexachlorocyclohexane (gamma-HCH)

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The sediment quality guideline for HCH, gamma(Lindane; BHC, gamma) is 0.37 ug/g organic carbon (Fairey et al., 2001).

Guideline Reference:

Spatial Representation:

Data were collected from 1 station(s). Station Code(s): 410CHN001 (Channel Islands Harbor CI1).

Temporal Representation:

Data for this waterbody were collected over the date range 2017-05-24 to 2017-05-24

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 135673, Lindane/gamma Hexachlorocyclohexane (gamma-HCH)	Region 4
Channel Islands Harbor

LOE ID:

248633

Pollutant:

Lindane/gamma Hexachlorocyclohexane (gamma-HCH)

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The sediment quality guideline for HCH, gamma(Lindane; BHC, gamma) is 0.37 ug/g organic carbon (Fairey et al., 2001).

Guideline Reference:

Spatial Representation:

Data were collected from 1 station(s). Station Code(s): 410CHN004 (Channel Islands Harbor CI4).

Temporal Representation:

Data for this waterbody were collected over the date range 2017-05-24 to 2017-05-24

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 135673, Lindane/gamma Hexachlorocyclohexane (gamma-HCH)	Region 4
Channel Islands Harbor

LOE ID:

262049

Pollutant:

Lindane/gamma Hexachlorocyclohexane (gamma-HCH)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for HCH, gamma-. Although a total of 3 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The gamma-BHC (Lindane, gamma-HCH) criterion for the protection of human health from the consumption of organisms only is 0.063 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (Oxn_CI-17).

Temporal Representation:

Data for this waterbody was collected over the date range 2018-10-08 to 2019-12-04

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY


DECISION ID	135674	Region 4
Channel Islands Harbor

Pollutant:	Malathion
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.

Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.

Line of Evidence (LOE) for Decision ID 135674, Malathion	Region 4
Channel Islands Harbor

LOE ID:

262917

Pollutant:

Malathion

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Malathion. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The USEPA national ambient water quality criteria for saltwater aquatic life instantaneous maximum for malathion is 0.1 µg/L.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-02 (Oxn_CI-02_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-11-29

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135674, Malathion	Region 4
Channel Islands Harbor

LOE ID:

262918

Pollutant:

Malathion

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Malathion. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The USEPA national ambient water quality criteria for saltwater aquatic life instantaneous maximum for malathion is 0.1 µg/L.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-07 (Oxn_CI-07_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135674, Malathion	Region 4
Channel Islands Harbor

LOE ID:

263106

Pollutant:

Malathion

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Malathion. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The USEPA national ambient water quality criteria for saltwater aquatic life instantaneous maximum for malathion is 0.1 µg/L.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-21 (Oxn_CI-21_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135674, Malathion	Region 4
Channel Islands Harbor

LOE ID:

262898

Pollutant:

Malathion

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Malathion. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The USEPA national ambient water quality criteria for saltwater aquatic life instantaneous maximum for malathion is 0.1 µg/L.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-25 (Oxn_CI-25_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135674, Malathion	Region 4
Channel Islands Harbor

LOE ID:

262894

Pollutant:

Malathion

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Malathion. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The USEPA national ambient water quality criteria for saltwater aquatic life instantaneous maximum for malathion is 0.1 µg/L.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-24 (Oxn_CI-24_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135674, Malathion	Region 4
Channel Islands Harbor

LOE ID:

263090

Pollutant:

Malathion

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Malathion. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The USEPA national ambient water quality criteria for saltwater aquatic life instantaneous maximum for malathion is 0.1 µg/L.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-14 (Oxn_CI-14_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135674, Malathion	Region 4
Channel Islands Harbor

LOE ID:

263088

Pollutant:

Malathion

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Malathion. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The USEPA national ambient water quality criteria for saltwater aquatic life instantaneous maximum for malathion is 0.1 µg/L.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-06 (Oxn_CI-06_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135674, Malathion	Region 4
Channel Islands Harbor

LOE ID:

262892

Pollutant:

Malathion

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Malathion. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The USEPA national ambient water quality criteria for saltwater aquatic life instantaneous maximum for malathion is 0.1 µg/L.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-20 (Oxn_CI-20_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135674, Malathion	Region 4
Channel Islands Harbor

LOE ID:

262875

Pollutant:

Malathion

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Malathion. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The USEPA national ambient water quality criteria for saltwater aquatic life instantaneous maximum for malathion is 0.1 µg/L.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-09 (Oxn_CI-09_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135674, Malathion	Region 4
Channel Islands Harbor

LOE ID:

263267

Pollutant:

Malathion

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Malathion. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The USEPA national ambient water quality criteria for saltwater aquatic life instantaneous maximum for malathion is 0.1 µg/L.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-15 (Oxn_CI-15_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135674, Malathion	Region 4
Channel Islands Harbor

LOE ID:

262869

Pollutant:

Malathion

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Malathion. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The USEPA national ambient water quality criteria for saltwater aquatic life instantaneous maximum for malathion is 0.1 µg/L.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-16 (Oxn_CI-16_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135674, Malathion	Region 4
Channel Islands Harbor

LOE ID:

262868

Pollutant:

Malathion

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Malathion. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The USEPA national ambient water quality criteria for saltwater aquatic life instantaneous maximum for malathion is 0.1 µg/L.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-17 (Oxn_CI-17_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-11-29

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135674, Malathion	Region 4
Channel Islands Harbor

LOE ID:

262953

Pollutant:

Malathion

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Malathion. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The USEPA national ambient water quality criteria for saltwater aquatic life instantaneous maximum for malathion is 0.1 µg/L.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-11 (Oxn_CI-11_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135674, Malathion	Region 4
Channel Islands Harbor

LOE ID:

263150

Pollutant:

Malathion

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Malathion. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The USEPA national ambient water quality criteria for saltwater aquatic life instantaneous maximum for malathion is 0.1 µg/L.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-26 (Oxn_CI-26_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135674, Malathion	Region 4
Channel Islands Harbor

LOE ID:

263148

Pollutant:

Malathion

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Malathion. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The USEPA national ambient water quality criteria for saltwater aquatic life instantaneous maximum for malathion is 0.1 µg/L.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-13 (Oxn_CI-13_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135674, Malathion	Region 4
Channel Islands Harbor

LOE ID:

263146

Pollutant:

Malathion

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Malathion. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The USEPA national ambient water quality criteria for saltwater aquatic life instantaneous maximum for malathion is 0.1 µg/L.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-31 (Oxn_CI-31_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135674, Malathion	Region 4
Channel Islands Harbor

LOE ID:

263144

Pollutant:

Malathion

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Malathion. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The USEPA national ambient water quality criteria for saltwater aquatic life instantaneous maximum for malathion is 0.1 µg/L.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-18 (Oxn_CI-18_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135674, Malathion	Region 4
Channel Islands Harbor

LOE ID:

263043

Pollutant:

Malathion

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Malathion. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The USEPA national ambient water quality criteria for saltwater aquatic life instantaneous maximum for malathion is 0.1 µg/L.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-10 (Oxn_CI-10_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135674, Malathion	Region 4
Channel Islands Harbor

LOE ID:

262937

Pollutant:

Malathion

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Malathion. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The USEPA national ambient water quality criteria for saltwater aquatic life instantaneous maximum for malathion is 0.1 µg/L.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-08 (Oxn_CI-08_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135674, Malathion	Region 4
Channel Islands Harbor

LOE ID:

262936

Pollutant:

Malathion

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Malathion. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The USEPA national ambient water quality criteria for saltwater aquatic life instantaneous maximum for malathion is 0.1 µg/L.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-03 (Oxn_CI-03_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135674, Malathion	Region 4
Channel Islands Harbor

LOE ID:

262932

Pollutant:

Malathion

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Malathion. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The USEPA national ambient water quality criteria for saltwater aquatic life instantaneous maximum for malathion is 0.1 µg/L.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-12 (Oxn_CI-12_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135674, Malathion	Region 4
Channel Islands Harbor

LOE ID:

262830

Pollutant:

Malathion

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Malathion. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The USEPA national ambient water quality criteria for saltwater aquatic life instantaneous maximum for malathion is 0.1 µg/L.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-23 (Oxn_CI-23_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135674, Malathion	Region 4
Channel Islands Harbor

LOE ID:

263128

Pollutant:

Malathion

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Malathion. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The USEPA national ambient water quality criteria for saltwater aquatic life instantaneous maximum for malathion is 0.1 µg/L.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-27 (Oxn_CI-27_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135674, Malathion	Region 4
Channel Islands Harbor

LOE ID:

263125

Pollutant:

Malathion

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Malathion. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The USEPA national ambient water quality criteria for saltwater aquatic life instantaneous maximum for malathion is 0.1 µg/L.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-19 (Oxn_CI-19_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135674, Malathion	Region 4
Channel Islands Harbor

LOE ID:

262916

Pollutant:

Malathion

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Malathion. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The USEPA national ambient water quality criteria for saltwater aquatic life instantaneous maximum for malathion is 0.1 µg/L.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-22 (Oxn_CI-22_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY


DECISION ID	149383	Region 4
Channel Islands Harbor

Pollutant:	Mercury
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)(2018)
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. LOE 83593 is replaced with LOE 314207. LOE 83593 was incorrectly identified as fish fillet data when the data are bivalve tissue samples. LOE 314207 corrects this error. Zero samples exceeded the objectives, guidelines, or criteria for beneficial uses applicable to this water segment-pollutant combination, which is less than the minimum number of exceedances needed to place the water segment on the section CWA section 303(d) List for toxicants (Table 3.1 of the Listing Policy). The data used satisfies the data quality requirements (section 6.1.4) and data quantity requirements (section 6.1.5) of the Listing Policy. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the CWA section 303(d) List.

Regional Board Decision Recommendation:	Decision written by SWRCB staff.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because applicable water quality standards for the pollutant are not exceeded.

Line of Evidence (LOE) for Decision ID 149383, Mercury	Region 4
Channel Islands Harbor

LOE ID:

263283

Pollutant:

Mercury

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The mercury criterion for the protection of human health from consumption of organisms only is 0.051 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-17 (Oxn_CI-17_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149383, Mercury	Region 4
Channel Islands Harbor

LOE ID:

263342

Pollutant:

Mercury

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

National Recommended Water Quality Criteria Continuous Concentration (4-day average concentrations) for saltwater aquatic organisms exposure to total mercury is 0.94 ug/L.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-13 (Oxn_CI-13_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149383, Mercury	Region 4
Channel Islands Harbor

LOE ID:

263354

Pollutant:

Mercury

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

National Recommended Water Quality Criteria Continuous Concentration (4-day average concentrations) for saltwater aquatic organisms exposure to total mercury is 0.94 ug/L.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-07 (Oxn_CI-07_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149383, Mercury	Region 4
Channel Islands Harbor

LOE ID:

263274

Pollutant:

Mercury

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

National Recommended Water Quality Criteria Continuous Concentration (4-day average concentrations) for saltwater aquatic organisms exposure to total mercury is 0.94 ug/L.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-15 (Oxn_CI-15_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149383, Mercury	Region 4
Channel Islands Harbor

LOE ID:

263364

Pollutant:

Mercury

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

National Recommended Water Quality Criteria Continuous Concentration (4-day average concentrations) for saltwater aquatic organisms exposure to total mercury is 0.94 ug/L.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-22 (Oxn_CI-22_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149383, Mercury	Region 4
Channel Islands Harbor

LOE ID:

263457

Pollutant:

Mercury

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

National Recommended Water Quality Criteria Continuous Concentration (4-day average concentrations) for saltwater aquatic organisms exposure to total mercury is 0.94 ug/L.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-20 (Oxn_CI-20_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149383, Mercury	Region 4
Channel Islands Harbor

LOE ID:

263240

Pollutant:

Mercury

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The mercury criterion for the protection of human health from consumption of organisms only is 0.051 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-18 (Oxn_CI-18_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149383, Mercury	Region 4
Channel Islands Harbor

LOE ID:

263167

Pollutant:

Mercury

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The mercury criterion for the protection of human health from consumption of organisms only is 0.051 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-08 (Oxn_CI-08_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149383, Mercury	Region 4
Channel Islands Harbor

LOE ID:

263424

Pollutant:

Mercury

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

National Recommended Water Quality Criteria Continuous Concentration (4-day average concentrations) for saltwater aquatic organisms exposure to total mercury is 0.94 ug/L.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-06 (Oxn_CI-06_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-09 and 2018-10-09

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149383, Mercury	Region 4
Channel Islands Harbor

LOE ID:

263353

Pollutant:

Mercury

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

National Recommended Water Quality Criteria Continuous Concentration (4-day average concentrations) for saltwater aquatic organisms exposure to total mercury is 0.94 ug/L.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-09 (Oxn_CI-09_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149383, Mercury	Region 4
Channel Islands Harbor

LOE ID:

263188

Pollutant:

Mercury

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

National Recommended Water Quality Criteria Continuous Concentration (4-day average concentrations) for saltwater aquatic organisms exposure to total mercury is 0.94 ug/L.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-14 (Oxn_CI-14_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149383, Mercury	Region 4
Channel Islands Harbor

LOE ID:

263371

Pollutant:

Mercury

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The mercury criterion for the protection of human health from consumption of organisms only is 0.051 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-06 (Oxn_CI-06_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-09 and 2018-10-09

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149383, Mercury	Region 4
Channel Islands Harbor

LOE ID:

263376

Pollutant:

Mercury

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

National Recommended Water Quality Criteria Continuous Concentration (4-day average concentrations) for saltwater aquatic organisms exposure to total mercury is 0.94 ug/L.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-11 (Oxn_CI-11_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149383, Mercury	Region 4
Channel Islands Harbor

LOE ID:

263322

Pollutant:

Mercury

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The mercury criterion for the protection of human health from consumption of organisms only is 0.051 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-10 (Oxn_CI-10_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149383, Mercury	Region 4
Channel Islands Harbor

LOE ID:

263323

Pollutant:

Mercury

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The mercury criterion for the protection of human health from consumption of organisms only is 0.051 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-24 (Oxn_CI-24_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149383, Mercury	Region 4
Channel Islands Harbor

LOE ID:

263381

Pollutant:

Mercury

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The mercury criterion for the protection of human health from consumption of organisms only is 0.051 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-26 (Oxn_CI-26_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149383, Mercury	Region 4
Channel Islands Harbor

LOE ID:

263192

Pollutant:

Mercury

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

National Recommended Water Quality Criteria Continuous Concentration (4-day average concentrations) for saltwater aquatic organisms exposure to total mercury is 0.94 ug/L.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-17 (Oxn_CI-17_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149383, Mercury	Region 4
Channel Islands Harbor

LOE ID:

263280

Pollutant:

Mercury

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

National Recommended Water Quality Criteria Continuous Concentration (4-day average concentrations) for saltwater aquatic organisms exposure to total mercury is 0.94 ug/L.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-12 (Oxn_CI-12_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149383, Mercury	Region 4
Channel Islands Harbor

LOE ID:

263233

Pollutant:

Mercury

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The mercury criterion for the protection of human health from consumption of organisms only is 0.051 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-21 (Oxn_CI-21_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149383, Mercury	Region 4
Channel Islands Harbor

LOE ID:

263230

Pollutant:

Mercury

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The mercury criterion for the protection of human health from consumption of organisms only is 0.051 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-25 (Oxn_CI-25_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149383, Mercury	Region 4
Channel Islands Harbor

LOE ID:

263737

Pollutant:

Mercury

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The mercury criterion for the protection of human health from consumption of organisms only is 0.051 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-09 (Oxn_CI-09_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149383, Mercury	Region 4
Channel Islands Harbor

LOE ID:

249750

Pollutant:

Mercury

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The evaluation guideline for mercury is 2.1 ug/g (PTI Environmental Services, 1991).

Guideline Reference:

Pollutants of concern in Puget Sound. EPA 910/9-91-003. Seattle, WA: U.S. Environmental Protection Agency

Spatial Representation:

Data were collected from 1 station(s). Station Code(s): B18-10046 (B18-10046).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-08-18 to 2018-08-18

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 149383, Mercury	Region 4
Channel Islands Harbor

LOE ID:

263214

Pollutant:

Mercury

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The mercury criterion for the protection of human health from consumption of organisms only is 0.051 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-22 (Oxn_CI-22_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149383, Mercury	Region 4
Channel Islands Harbor

LOE ID:

263425

Pollutant:

Mercury

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The mercury criterion for the protection of human health from consumption of organisms only is 0.051 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-02 (Oxn_CI-02_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149383, Mercury	Region 4
Channel Islands Harbor

LOE ID:

263701

Pollutant:

Mercury

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The mercury criterion for the protection of human health from consumption of organisms only is 0.051 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-16 (Oxn_CI-16_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149383, Mercury	Region 4
Channel Islands Harbor

LOE ID:

263607

Pollutant:

Mercury

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The mercury criterion for the protection of human health from consumption of organisms only is 0.051 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-31 (Oxn_CI-31_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149383, Mercury	Region 4
Channel Islands Harbor

LOE ID:

263684

Pollutant:

Mercury

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The mercury criterion for the protection of human health from consumption of organisms only is 0.051 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-07 (Oxn_CI-07_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149383, Mercury	Region 4
Channel Islands Harbor

LOE ID:

263397

Pollutant:

Mercury

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

National Recommended Water Quality Criteria Continuous Concentration (4-day average concentrations) for saltwater aquatic organisms exposure to total mercury is 0.94 ug/L.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-10 (Oxn_CI-10_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149383, Mercury	Region 4
Channel Islands Harbor

LOE ID:

263212

Pollutant:

Mercury

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

National Recommended Water Quality Criteria Continuous Concentration (4-day average concentrations) for saltwater aquatic organisms exposure to total mercury is 0.94 ug/L.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-24 (Oxn_CI-24_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149383, Mercury	Region 4
Channel Islands Harbor

LOE ID:

263413

Pollutant:

Mercury

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

National Recommended Water Quality Criteria Continuous Concentration (4-day average concentrations) for saltwater aquatic organisms exposure to total mercury is 0.94 ug/L.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-27 (Oxn_CI-27_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149383, Mercury	Region 4
Channel Islands Harbor

LOE ID:

263317

Pollutant:

Mercury

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

National Recommended Water Quality Criteria Continuous Concentration (4-day average concentrations) for saltwater aquatic organisms exposure to total mercury is 0.94 ug/L.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-02 (Oxn_CI-02_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149383, Mercury	Region 4
Channel Islands Harbor

LOE ID:

263313

Pollutant:

Mercury

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

National Recommended Water Quality Criteria Continuous Concentration (4-day average concentrations) for saltwater aquatic organisms exposure to total mercury is 0.94 ug/L.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-08 (Oxn_CI-08_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149383, Mercury	Region 4
Channel Islands Harbor

LOE ID:

263222

Pollutant:

Mercury

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

National Recommended Water Quality Criteria Continuous Concentration (4-day average concentrations) for saltwater aquatic organisms exposure to total mercury is 0.94 ug/L.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-23 (Oxn_CI-23_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149383, Mercury	Region 4
Channel Islands Harbor

LOE ID:

263445

Pollutant:

Mercury

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The mercury criterion for the protection of human health from consumption of organisms only is 0.051 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-11 (Oxn_CI-11_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149383, Mercury	Region 4
Channel Islands Harbor

LOE ID:

263339

Pollutant:

Mercury

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The mercury criterion for the protection of human health from consumption of organisms only is 0.051 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-14 (Oxn_CI-14_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149383, Mercury	Region 4
Channel Islands Harbor

LOE ID:

263245

Pollutant:

Mercury

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

National Recommended Water Quality Criteria Continuous Concentration (4-day average concentrations) for saltwater aquatic organisms exposure to total mercury is 0.94 ug/L.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-25 (Oxn_CI-25_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149383, Mercury	Region 4
Channel Islands Harbor

LOE ID:

263420

Pollutant:

Mercury

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

National Recommended Water Quality Criteria Continuous Concentration (4-day average concentrations) for saltwater aquatic organisms exposure to total mercury is 0.94 ug/L.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-21 (Oxn_CI-21_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149383, Mercury	Region 4
Channel Islands Harbor

LOE ID:

263220

Pollutant:

Mercury

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

National Recommended Water Quality Criteria Continuous Concentration (4-day average concentrations) for saltwater aquatic organisms exposure to total mercury is 0.94 ug/L.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-31 (Oxn_CI-31_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149383, Mercury	Region 4
Channel Islands Harbor

LOE ID:

263625

Pollutant:

Mercury

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

National Recommended Water Quality Criteria Continuous Concentration (4-day average concentrations) for saltwater aquatic organisms exposure to total mercury is 0.94 ug/L.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-26 (Oxn_CI-26_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149383, Mercury	Region 4
Channel Islands Harbor

LOE ID:

314207

Pollutant:

Mercury

LOE Subgroup:

Pollutant-Tissue

Matrix:

Tissue

Fraction:

Shellfish

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

Fish tissue analysis

Data Used to Assess Water Quality:

The one samples did not exceed the guideline. Data were reported on a dry weight basis and were converted to a wet weight basis by multiplying the dry-weight concentration by a factor of 1 minus the percentage of moisture content expressed as a decimal.

Data Reference:

RWB4 Miscellaneous Ventura Coastal 2006

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The USEPA 304(a) recommended water quality criterion for concentrations of methylmercury in fish tissue of trophic level 4 fish (150 - 500 mm; fillet wet weight) is 0.2 mg/kg or 0.20 ppm. (USEPA, 2001)

Guideline Reference:

Water Quality Criterion for the Protection of Human Health: Methylmercury. Final. United States Environmental Protection Agency Office of Science and Technology Office of Water. EPA-823-R-01-001. January 2001

Spatial Representation:

Samples are collected by hand from three sub-locations A,B,C from site 410VHCHN5. The three samples per site were averaged prior to assessment.

Temporal Representation:

Representative samples of locally abundant species were collected on February 28, 2007.

Environmental Conditions:

QAPP Information:

Samples were collected as part of the State Water Board's Surface Water Ambient Monitoring Program.

QAPP Information Reference(s):

This is a placeholder for previously assessed data that does not have quality assurance information but would require it under newly developed policies. These LOEs were previously assessed and approved at the Regional, State and Federal level in past cycles. The LOEs needed to be moved and/or reassessed but required this reference code for movement within the decision making database.

Line of Evidence (LOE) for Decision ID 149383, Mercury	Region 4
Channel Islands Harbor

LOE ID:

263343

Pollutant:

Mercury

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The mercury criterion for the protection of human health from consumption of organisms only is 0.051 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-15 (Oxn_CI-15_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149383, Mercury	Region 4
Channel Islands Harbor

LOE ID:

263168

Pollutant:

Mercury

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The mercury criterion for the protection of human health from consumption of organisms only is 0.051 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-19 (Oxn_CI-19_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149383, Mercury	Region 4
Channel Islands Harbor

LOE ID:

263291

Pollutant:

Mercury

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The mercury criterion for the protection of human health from consumption of organisms only is 0.051 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-20 (Oxn_CI-20_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149383, Mercury	Region 4
Channel Islands Harbor

LOE ID:

263383

Pollutant:

Mercury

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The mercury criterion for the protection of human health from consumption of organisms only is 0.051 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-03 (Oxn_CI-03_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149383, Mercury	Region 4
Channel Islands Harbor

LOE ID:

263232

Pollutant:

Mercury

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

National Recommended Water Quality Criteria Continuous Concentration (4-day average concentrations) for saltwater aquatic organisms exposure to total mercury is 0.94 ug/L.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-16 (Oxn_CI-16_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149383, Mercury	Region 4
Channel Islands Harbor

LOE ID:

263282

Pollutant:

Mercury

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

National Recommended Water Quality Criteria Continuous Concentration (4-day average concentrations) for saltwater aquatic organisms exposure to total mercury is 0.94 ug/L.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-18 (Oxn_CI-18_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149383, Mercury	Region 4
Channel Islands Harbor

LOE ID:

263741

Pollutant:

Mercury

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The mercury criterion for the protection of human health from consumption of organisms only is 0.051 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-23 (Oxn_CI-23_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149383, Mercury	Region 4
Channel Islands Harbor

LOE ID:

263172

Pollutant:

Mercury

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The mercury criterion for the protection of human health from consumption of organisms only is 0.051 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-12 (Oxn_CI-12_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149383, Mercury	Region 4
Channel Islands Harbor

LOE ID:

263377

Pollutant:

Mercury

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The mercury criterion for the protection of human health from consumption of organisms only is 0.051 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-13 (Oxn_CI-13_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149383, Mercury	Region 4
Channel Islands Harbor

LOE ID:

263721

Pollutant:

Mercury

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

National Recommended Water Quality Criteria Continuous Concentration (4-day average concentrations) for saltwater aquatic organisms exposure to total mercury is 0.94 ug/L.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-19 (Oxn_CI-19_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149383, Mercury	Region 4
Channel Islands Harbor

LOE ID:

83592

Pollutant:

Mercury

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

State Water Board staff assessed 4 data for Channel Islands Harbor to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Mercury.

Data Reference:

RWB4 Miscellaneous Ventura Coastal 2006

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

The Mercury criteria for the protection of human health from consumption of organisms only is 0.051 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Data for this line of evidence for Channel Islands Harbor was collected at 1 monitoring site [ Channel Islands Harbor 5 - 410VHCHN5]

Temporal Representation:

Data was collected on a single day 10/12/2006.

Environmental Conditions:

Staff is not aware of any special conditions that might affect interpretation of the data.

QAPP Information:

The SWAMP QAPP (2008) was followed.

QAPP Information Reference(s):

Surface Water Ambient Monitoring Program Quality Assurance Program Plan

Line of Evidence (LOE) for Decision ID 149383, Mercury	Region 4
Channel Islands Harbor

LOE ID:

83591

Pollutant:

Mercury

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Boardstaff assessed SWAMP data for Channel Islands Harbor to determine beneficial use support and results are as follows: 0 of 5 samples exceed the criterion for Mercury.

Data Reference:

RWB4 Miscellaneous Ventura Coastal 2006

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

In marine and estuarine sediments the sediment quality guideline (predictive of sediment toxicity for sediment-dwelling organisms) for Mercury is 2.1 ug/g (PTI Environmental Services, 1991).

Guideline Reference:

Pollutants of concern in Puget Sound. EPA 910/9-91-003. Seattle, WA: U.S. Environmental Protection Agency

Spatial Representation:

Temporal Representation:

Data was collected over the time period 10/11/2006-10/12/2006.

Environmental Conditions:

Staff is not aware of any special conditions that might affect interpretation of the data.

QAPP Information:

2002 QAMP (Quality Assurance Management Plan) for the State of California's Surface Water Ambient Monitoring Program

QAPP Information Reference(s):

Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version)

Line of Evidence (LOE) for Decision ID 149383, Mercury	Region 4
Channel Islands Harbor

LOE ID:

263174

Pollutant:

Mercury

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The mercury criterion for the protection of human health from consumption of organisms only is 0.051 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-27 (Oxn_CI-27_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149383, Mercury	Region 4
Channel Islands Harbor

LOE ID:

263213

Pollutant:

Mercury

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

National Recommended Water Quality Criteria Continuous Concentration (4-day average concentrations) for saltwater aquatic organisms exposure to total mercury is 0.94 ug/L.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-03 (Oxn_CI-03_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY


DECISION ID	135676	Region 4
Channel Islands Harbor

Pollutant:	Methoxychlor
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.

Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.

Line of Evidence (LOE) for Decision ID 135676, Methoxychlor	Region 4
Channel Islands Harbor

LOE ID:

263634

Pollutant:

Methoxychlor

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support and the results are as follows: 0 of the 3 samples exceeded the water quality threshold for Methoxychlor. Although a total of 4 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The USEPA national ambient water quality criterion for saltwater aquatic life Criterion Continuous Concentration (CCC) expressed as a 4-day average for methoxychlor is 0.03 ug/L.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (Oxn_CI-17).

Temporal Representation:

Data for this waterbody was collected over the date range 2018-10-08 to 2019-12-04

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY


DECISION ID	135677	Region 4
Channel Islands Harbor

Pollutant:	Methyl bromide
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.

Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.

Line of Evidence (LOE) for Decision ID 135677, Methyl bromide	Region 4
Channel Islands Harbor

LOE ID:

257896

Pollutant:

Methyl bromide

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The bromomethane (methyl bromide) criterion for the protection of human health from the consumption of water and organisms is 4000 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-17 (Oxn_CI-17_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2019-12-04 and 2019-12-04

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY


DECISION ID	135678	Region 4
Channel Islands Harbor

Pollutant:	Mirex
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)(2018)
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.

Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.

Line of Evidence (LOE) for Decision ID 135678, Mirex	Region 4
Channel Islands Harbor

LOE ID:

82820

Pollutant:

Mirex

LOE Subgroup:

Pollutant-Tissue

Matrix:

Tissue

Fraction:

Shellfish

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

Shellfish surveys

Data Used to Assess Water Quality:

Data Reference:

RWB4 Miscellaneous Ventura Coastal 2006

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The modified OEHHA Fish Contaminant Goal for mirex in shellfish tissue is 0.43 ppb. This screening level assumes an average body weight of 70 kg and a consumption rate of 21 g/day. This constituent is a carcinogen therefore the risk level is set to one in a million. (Brodberg, R.K., and G.A. Pollock, 1999; Klasing, S., and R. Brodberg, 2008; OEHHA, 1992)

Guideline Reference:

Expedited Cancer Potency Values and Proposed Regulatory Levels for Certain Proposition 65 Carcinogens.

Guideline Reference:

Prevalence of Selected Target Chemical Contaminants in Sport Fish From Two California Lakes: Public health designed screening study. Sacramento, CA: Office of Environmental Health Hazard Assessment

Guideline Reference:

Development of Fish Contaminant Goals and Advisory Tissue Levels for Common Contaminants in California Sport Fish: Chlordane, DDTs, Dieldrin, Methylmercury, PCBs, Selenium, and Toxaphene

Spatial Representation:

Data was collected at one station: Channel Islands Harbor 5 - 410VHCHN5.

Temporal Representation:

Data was collected on a single day 2/28/2007.

Environmental Conditions:

QAPP Information:

Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002

QAPP Information Reference(s):

Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version)

Line of Evidence (LOE) for Decision ID 135678, Mirex	Region 4
Channel Islands Harbor

LOE ID:

83594

Pollutant:

Mirex

LOE Subgroup:

Pollutant-Tissue

Matrix:

Tissue

Fraction:

Fish fillet

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

Fish tissue analysis

Data Used to Assess Water Quality:

Data Reference:

RWB4 Miscellaneous Ventura Coastal 2006

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The modified OEHHA Fish Contaminant Goal for mirex in fish tissue is 0.28 ppb. This screening level assumes an average body weight of 70 kg and a consumption rate of 32 g/day. A cooking reduction factor of 1 is applied for skin-off fillets.(Klasing, S., and R. Brodberg, 2008; OEHHA, 1992)

Guideline Reference:

Development of Fish Contaminant Goals and Advisory Tissue Levels for Common Contaminants in California Sport Fish: Chlordane, DDTs, Dieldrin, Methylmercury, PCBs, Selenium, and Toxaphene

Guideline Reference:

Expedited Cancer Potency Values and Proposed Regulatory Levels for Certain Proposition 65 Carcinogens.

Spatial Representation:

Samples are collected by hand from three sub-locations (A,B,C) from site 410VHCHN5. The three samples per site were averaged prior to assessment.

Temporal Representation:

Representative samples of locally abundant species were collected on February 28, 2007.

Environmental Conditions:

QAPP Information:

Samples were collected as part of the State Water Board's Surface Water Ambient Monitoring Program.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 135678, Mirex	Region 4
Channel Islands Harbor

LOE ID:

263519

Pollutant:

Mirex

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Mirex. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The USEPA national recommended criterion continuous concentration for mirex for the protection of saltwater aquatic life is 0.001 µg/L.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-03 (Oxn_CI-03_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135678, Mirex	Region 4
Channel Islands Harbor

LOE ID:

263521

Pollutant:

Mirex

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Mirex. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The USEPA national recommended criterion continuous concentration for mirex for the protection of saltwater aquatic life is 0.001 µg/L.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-10 (Oxn_CI-10_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135678, Mirex	Region 4
Channel Islands Harbor

LOE ID:

263697

Pollutant:

Mirex

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Mirex. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The USEPA national recommended criterion continuous concentration for mirex for the protection of saltwater aquatic life is 0.001 µg/L.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-07 (Oxn_CI-07_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135678, Mirex	Region 4
Channel Islands Harbor

LOE ID:

263700

Pollutant:

Mirex

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Mirex. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The USEPA national recommended criterion continuous concentration for mirex for the protection of saltwater aquatic life is 0.001 µg/L.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-26 (Oxn_CI-26_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135678, Mirex	Region 4
Channel Islands Harbor

LOE ID:

263537

Pollutant:

Mirex

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Mirex. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The USEPA national recommended criterion continuous concentration for mirex for the protection of saltwater aquatic life is 0.001 µg/L.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-06 (Oxn_CI-06_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135678, Mirex	Region 4
Channel Islands Harbor

LOE ID:

263539

Pollutant:

Mirex

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Mirex. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The USEPA national recommended criterion continuous concentration for mirex for the protection of saltwater aquatic life is 0.001 µg/L.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-27 (Oxn_CI-27_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135678, Mirex	Region 4
Channel Islands Harbor

LOE ID:

263553

Pollutant:

Mirex

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Mirex. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The USEPA national recommended criterion continuous concentration for mirex for the protection of saltwater aquatic life is 0.001 µg/L.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-12 (Oxn_CI-12_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135678, Mirex	Region 4
Channel Islands Harbor

LOE ID:

263554

Pollutant:

Mirex

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Mirex. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The USEPA national recommended criterion continuous concentration for mirex for the protection of saltwater aquatic life is 0.001 µg/L.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-02 (Oxn_CI-02_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-11-29

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135678, Mirex	Region 4
Channel Islands Harbor

LOE ID:

263555

Pollutant:

Mirex

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Mirex. Although a total of 4 samples were collected, 4 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The USEPA national recommended criterion continuous concentration for mirex for the protection of saltwater aquatic life is 0.001 µg/L.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-17 (Oxn_CI-17_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2019-12-04

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135678, Mirex	Region 4
Channel Islands Harbor

LOE ID:

263557

Pollutant:

Mirex

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Mirex. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The USEPA national recommended criterion continuous concentration for mirex for the protection of saltwater aquatic life is 0.001 µg/L.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-23 (Oxn_CI-23_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135678, Mirex	Region 4
Channel Islands Harbor

LOE ID:

263736

Pollutant:

Mirex

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Mirex. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The USEPA national recommended criterion continuous concentration for mirex for the protection of saltwater aquatic life is 0.001 µg/L.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-16 (Oxn_CI-16_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135678, Mirex	Region 4
Channel Islands Harbor

LOE ID:

263571

Pollutant:

Mirex

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Mirex. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The USEPA national recommended criterion continuous concentration for mirex for the protection of saltwater aquatic life is 0.001 µg/L.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-25 (Oxn_CI-25_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135678, Mirex	Region 4
Channel Islands Harbor

LOE ID:

263573

Pollutant:

Mirex

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Mirex. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The USEPA national recommended criterion continuous concentration for mirex for the protection of saltwater aquatic life is 0.001 µg/L.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-31 (Oxn_CI-31_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135678, Mirex	Region 4
Channel Islands Harbor

LOE ID:

263659

Pollutant:

Mirex

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Mirex. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The USEPA national recommended criterion continuous concentration for mirex for the protection of saltwater aquatic life is 0.001 µg/L.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-14 (Oxn_CI-14_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135678, Mirex	Region 4
Channel Islands Harbor

LOE ID:

263660

Pollutant:

Mirex

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Mirex. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The USEPA national recommended criterion continuous concentration for mirex for the protection of saltwater aquatic life is 0.001 µg/L.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-09 (Oxn_CI-09_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135678, Mirex	Region 4
Channel Islands Harbor

LOE ID:

263575

Pollutant:

Mirex

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Mirex. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The USEPA national recommended criterion continuous concentration for mirex for the protection of saltwater aquatic life is 0.001 µg/L.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-24 (Oxn_CI-24_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135678, Mirex	Region 4
Channel Islands Harbor

LOE ID:

263752

Pollutant:

Mirex

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Mirex. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The USEPA national recommended criterion continuous concentration for mirex for the protection of saltwater aquatic life is 0.001 µg/L.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-15 (Oxn_CI-15_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135678, Mirex	Region 4
Channel Islands Harbor

LOE ID:

263753

Pollutant:

Mirex

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Mirex. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The USEPA national recommended criterion continuous concentration for mirex for the protection of saltwater aquatic life is 0.001 µg/L.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-19 (Oxn_CI-19_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135678, Mirex	Region 4
Channel Islands Harbor

LOE ID:

263754

Pollutant:

Mirex

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Mirex. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The USEPA national recommended criterion continuous concentration for mirex for the protection of saltwater aquatic life is 0.001 µg/L.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-13 (Oxn_CI-13_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135678, Mirex	Region 4
Channel Islands Harbor

LOE ID:

263477

Pollutant:

Mirex

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Mirex. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The USEPA national recommended criterion continuous concentration for mirex for the protection of saltwater aquatic life is 0.001 µg/L.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-18 (Oxn_CI-18_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135678, Mirex	Region 4
Channel Islands Harbor

LOE ID:

263479

Pollutant:

Mirex

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Mirex. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The USEPA national recommended criterion continuous concentration for mirex for the protection of saltwater aquatic life is 0.001 µg/L.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-21 (Oxn_CI-21_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135678, Mirex	Region 4
Channel Islands Harbor

LOE ID:

263498

Pollutant:

Mirex

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Mirex. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The USEPA national recommended criterion continuous concentration for mirex for the protection of saltwater aquatic life is 0.001 µg/L.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-11 (Oxn_CI-11_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135678, Mirex	Region 4
Channel Islands Harbor

LOE ID:

263500

Pollutant:

Mirex

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Mirex. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The USEPA national recommended criterion continuous concentration for mirex for the protection of saltwater aquatic life is 0.001 µg/L.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-20 (Oxn_CI-20_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135678, Mirex	Region 4
Channel Islands Harbor

LOE ID:

263501

Pollutant:

Mirex

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Mirex. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The USEPA national recommended criterion continuous concentration for mirex for the protection of saltwater aquatic life is 0.001 µg/L.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-22 (Oxn_CI-22_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135678, Mirex	Region 4
Channel Islands Harbor

LOE ID:

263871

Pollutant:

Mirex

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Mirex. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The USEPA national recommended criterion continuous concentration for mirex for the protection of saltwater aquatic life is 0.001 µg/L.

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-08 (Oxn_CI-08_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY


DECISION ID	135682	Region 4
Channel Islands Harbor

Pollutant:	N-Nitrosodimethylamine
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.

Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.

Line of Evidence (LOE) for Decision ID 135682, N-Nitrosodimethylamine	Region 4
Channel Islands Harbor

LOE ID:

264152

Pollutant:

N-Nitrosodimethylamine

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The N-nitroso-di-methylamine criterion for the protection of human health from consumption of organisms only is 8.1 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-17 (Oxn_CI-17_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2019-12-04 and 2019-12-04

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY


DECISION ID	135683	Region 4
Channel Islands Harbor

Pollutant:	N-Nitrosodiphenylamine
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.

Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.

Line of Evidence (LOE) for Decision ID 135683, N-Nitrosodiphenylamine	Region 4
Channel Islands Harbor

LOE ID:

264153

Pollutant:

N-Nitrosodiphenylamine

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The N-nitroso-di-phenylamine criterion for the protection of human health from consumption of organisms only is 16 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-17 (Oxn_CI-17_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2019-12-04 and 2019-12-04

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY


DECISION ID	135684	Region 4
Channel Islands Harbor

Pollutant:	N-Nitrosodipropylamine
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.

Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.

Line of Evidence (LOE) for Decision ID 135684, N-Nitrosodipropylamine	Region 4
Channel Islands Harbor

LOE ID:

264151

Pollutant:

N-Nitrosodipropylamine

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Nitrosodi-n-propylamine, N-. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The N-nitroso-di-n-propylamine criterion for the protection of human health from consumption of organisms only is 1.4 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-17 (Oxn_CI-17_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2019-12-04 to 2019-12-04

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY


DECISION ID	135680	Region 4
Channel Islands Harbor

Pollutant:	Nickel
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)(2018)
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status. 3 lines of evidence are available in the administrative record to assess this pollutant. 1 of the 25 samples exceeds the criteria. 0 of the 1 sample exceeds the criteria. 0 of the 25 samples exceeds the criteria. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the CWA section 303(d) List in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. 1 of 25, 0 of 1, and 0 of 25 samples exceeded the criteria and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.

Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because applicable water quality standards are not being exceeded.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.

Line of Evidence (LOE) for Decision ID 135680, Nickel	Region 4
Channel Islands Harbor

LOE ID:

263883

Pollutant:

Nickel

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The nickel criterion for the protection of human health from consumption of organisms only is 4,600 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-27 (Oxn_CI-27_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135680, Nickel	Region 4
Channel Islands Harbor

LOE ID:

263987

Pollutant:

Nickel

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The nickel criterion for the protection of human health from consumption of organisms only is 4,600 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-31 (Oxn_CI-31_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135680, Nickel	Region 4
Channel Islands Harbor

LOE ID:

263988

Pollutant:

Nickel

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The nickel criterion for the protection of human health from consumption of organisms only is 4,600 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-20 (Oxn_CI-20_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135680, Nickel	Region 4
Channel Islands Harbor

LOE ID:

264099

Pollutant:

Nickel

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The nickel criterion for the protection of human health from consumption of organisms only is 4,600 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-13 (Oxn_CI-13_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135680, Nickel	Region 4
Channel Islands Harbor

LOE ID:

263887

Pollutant:

Nickel

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The nickel criterion for the protection of human health from consumption of organisms only is 4,600 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-17 (Oxn_CI-17_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135680, Nickel	Region 4
Channel Islands Harbor

LOE ID:

263991

Pollutant:

Nickel

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The nickel criterion for the protection of human health from consumption of organisms only is 4,600 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-14 (Oxn_CI-14_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135680, Nickel	Region 4
Channel Islands Harbor

LOE ID:

263891

Pollutant:

Nickel

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The nickel criterion for the protection of human health from consumption of organisms only is 4,600 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-16 (Oxn_CI-16_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135680, Nickel	Region 4
Channel Islands Harbor

LOE ID:

263796

Pollutant:

Nickel

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The nickel criterion for the protection of human health from consumption of organisms only is 4,600 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-15 (Oxn_CI-15_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135680, Nickel	Region 4
Channel Islands Harbor

LOE ID:

263902

Pollutant:

Nickel

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The nickel criterion for the protection of human health from consumption of organisms only is 4,600 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-10 (Oxn_CI-10_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135680, Nickel	Region 4
Channel Islands Harbor

LOE ID:

263910

Pollutant:

Nickel

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The nickel criterion for the protection of human health from consumption of organisms only is 4,600 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-22 (Oxn_CI-22_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135680, Nickel	Region 4
Channel Islands Harbor

LOE ID:

264011

Pollutant:

Nickel

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The nickel criterion for the protection of human health from consumption of organisms only is 4,600 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-24 (Oxn_CI-24_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135680, Nickel	Region 4
Channel Islands Harbor

LOE ID:

263876

Pollutant:

Nickel

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved nickel criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 8.2 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-15 (Oxn_CI-15_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135680, Nickel	Region 4
Channel Islands Harbor

LOE ID:

263978

Pollutant:

Nickel

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved nickel criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 8.2 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-31 (Oxn_CI-31_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135680, Nickel	Region 4
Channel Islands Harbor

LOE ID:

264097

Pollutant:

Nickel

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved nickel criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 8.2 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-08 (Oxn_CI-08_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135680, Nickel	Region 4
Channel Islands Harbor

LOE ID:

263890

Pollutant:

Nickel

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved nickel criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 8.2 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-17 (Oxn_CI-17_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135680, Nickel	Region 4
Channel Islands Harbor

LOE ID:

264107

Pollutant:

Nickel

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved nickel criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 8.2 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-11 (Oxn_CI-11_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135680, Nickel	Region 4
Channel Islands Harbor

LOE ID:

263798

Pollutant:

Nickel

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved nickel criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 8.2 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-23 (Oxn_CI-23_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135680, Nickel	Region 4
Channel Islands Harbor

LOE ID:

263942

Pollutant:

Nickel

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The nickel criterion for the protection of human health from consumption of organisms only is 4,600 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-07 (Oxn_CI-07_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135680, Nickel	Region 4
Channel Islands Harbor

LOE ID:

263943

Pollutant:

Nickel

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The nickel criterion for the protection of human health from consumption of organisms only is 4,600 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-26 (Oxn_CI-26_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135680, Nickel	Region 4
Channel Islands Harbor

LOE ID:

263945

Pollutant:

Nickel

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The nickel criterion for the protection of human health from consumption of organisms only is 4,600 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-25 (Oxn_CI-25_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135680, Nickel	Region 4
Channel Islands Harbor

LOE ID:

263951

Pollutant:

Nickel

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The nickel criterion for the protection of human health from consumption of organisms only is 4,600 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-11 (Oxn_CI-11_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135680, Nickel	Region 4
Channel Islands Harbor

LOE ID:

264075

Pollutant:

Nickel

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The nickel criterion for the protection of human health from consumption of organisms only is 4,600 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-02 (Oxn_CI-02_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135680, Nickel	Region 4
Channel Islands Harbor

LOE ID:

264076

Pollutant:

Nickel

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The nickel criterion for the protection of human health from consumption of organisms only is 4,600 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-09 (Oxn_CI-09_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135680, Nickel	Region 4
Channel Islands Harbor

LOE ID:

263973

Pollutant:

Nickel

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved nickel criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 8.2 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-14 (Oxn_CI-14_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135680, Nickel	Region 4
Channel Islands Harbor

LOE ID:

263974

Pollutant:

Nickel

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved nickel criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 8.2 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-20 (Oxn_CI-20_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135680, Nickel	Region 4
Channel Islands Harbor

LOE ID:

264085

Pollutant:

Nickel

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved nickel criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 8.2 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-02 (Oxn_CI-02_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135680, Nickel	Region 4
Channel Islands Harbor

LOE ID:

83595

Pollutant:

Nickel

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

State Water Board staff assessed 4 data for Channel Islands Harbor to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Nickel.

Data Reference:

RWB4 Miscellaneous Ventura Coastal 2006

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

The Nickel criteria for the protection of human health from consumption of organisms only is 4.6 mg/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Data for this line of evidence for Channel Islands Harbor was collected at 1 monitoring site [ Channel Islands Harbor 5 - 410VHCHN5]

Temporal Representation:

Data was collected on a single day 10/12/2006.

Environmental Conditions:

Staff is not aware of any special conditions that might affect interpretation of the data.

QAPP Information:

The SWAMP QAPP (2008) was followed.

QAPP Information Reference(s):

Surface Water Ambient Monitoring Program Quality Assurance Program Plan

Line of Evidence (LOE) for Decision ID 135680, Nickel	Region 4
Channel Islands Harbor

LOE ID:

263813

Pollutant:

Nickel

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved nickel criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 8.2 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-07 (Oxn_CI-07_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135680, Nickel	Region 4
Channel Islands Harbor

LOE ID:

264027

Pollutant:

Nickel

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved nickel criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 8.2 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-18 (Oxn_CI-18_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135680, Nickel	Region 4
Channel Islands Harbor

LOE ID:

264029

Pollutant:

Nickel

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved nickel criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 8.2 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-03 (Oxn_CI-03_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135680, Nickel	Region 4
Channel Islands Harbor

LOE ID:

263819

Pollutant:

Nickel

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved nickel criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 8.2 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-12 (Oxn_CI-12_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135680, Nickel	Region 4
Channel Islands Harbor

LOE ID:

264035

Pollutant:

Nickel

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved nickel criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 8.2 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-16 (Oxn_CI-16_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135680, Nickel	Region 4
Channel Islands Harbor

LOE ID:

263931

Pollutant:

Nickel

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved nickel criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 8.2 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-24 (Oxn_CI-24_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135680, Nickel	Region 4
Channel Islands Harbor

LOE ID:

263934

Pollutant:

Nickel

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved nickel criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 8.2 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-25 (Oxn_CI-25_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135680, Nickel	Region 4
Channel Islands Harbor

LOE ID:

264038

Pollutant:

Nickel

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved nickel criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 8.2 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-27 (Oxn_CI-27_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135680, Nickel	Region 4
Channel Islands Harbor

LOE ID:

263831

Pollutant:

Nickel

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved nickel criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 8.2 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-22 (Oxn_CI-22_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135680, Nickel	Region 4
Channel Islands Harbor

LOE ID:

263836

Pollutant:

Nickel

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved nickel criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 8.2 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-19 (Oxn_CI-19_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135680, Nickel	Region 4
Channel Islands Harbor

LOE ID:

264048

Pollutant:

Nickel

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved nickel criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 8.2 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-26 (Oxn_CI-26_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135680, Nickel	Region 4
Channel Islands Harbor

LOE ID:

264050

Pollutant:

Nickel

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved nickel criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 8.2 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-13 (Oxn_CI-13_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135680, Nickel	Region 4
Channel Islands Harbor

LOE ID:

263844

Pollutant:

Nickel

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved nickel criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 8.2 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-06 (Oxn_CI-06_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-09 and 2018-10-09

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135680, Nickel	Region 4
Channel Islands Harbor

LOE ID:

264057

Pollutant:

Nickel

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved nickel criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 8.2 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-21 (Oxn_CI-21_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135680, Nickel	Region 4
Channel Islands Harbor

LOE ID:

264059

Pollutant:

Nickel

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved nickel criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 8.2 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-10 (Oxn_CI-10_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135680, Nickel	Region 4
Channel Islands Harbor

LOE ID:

263859

Pollutant:

Nickel

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved nickel criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 8.2 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-09 (Oxn_CI-09_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135680, Nickel	Region 4
Channel Islands Harbor

LOE ID:

263970

Pollutant:

Nickel

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The nickel criterion for the protection of human health from consumption of organisms only is 4,600 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-03 (Oxn_CI-03_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135680, Nickel	Region 4
Channel Islands Harbor

LOE ID:

263971

Pollutant:

Nickel

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The nickel criterion for the protection of human health from consumption of organisms only is 4,600 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-19 (Oxn_CI-19_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135680, Nickel	Region 4
Channel Islands Harbor

LOE ID:

264081

Pollutant:

Nickel

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The nickel criterion for the protection of human health from consumption of organisms only is 4,600 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-21 (Oxn_CI-21_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135680, Nickel	Region 4
Channel Islands Harbor

LOE ID:

264084

Pollutant:

Nickel

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The nickel criterion for the protection of human health from consumption of organisms only is 4,600 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-23 (Oxn_CI-23_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135680, Nickel	Region 4
Channel Islands Harbor

LOE ID:

263765

Pollutant:

Nickel

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The nickel criterion for the protection of human health from consumption of organisms only is 4,600 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-18 (Oxn_CI-18_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135680, Nickel	Region 4
Channel Islands Harbor

LOE ID:

263770

Pollutant:

Nickel

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The nickel criterion for the protection of human health from consumption of organisms only is 4,600 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-12 (Oxn_CI-12_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135680, Nickel	Region 4
Channel Islands Harbor

LOE ID:

263772

Pollutant:

Nickel

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The nickel criterion for the protection of human health from consumption of organisms only is 4,600 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-06 (Oxn_CI-06_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-09 and 2018-10-09

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135680, Nickel	Region 4
Channel Islands Harbor

LOE ID:

263773

Pollutant:

Nickel

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The nickel criterion for the protection of human health from consumption of organisms only is 4,600 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-08 (Oxn_CI-08_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY


DECISION ID	135681	Region 4
Channel Islands Harbor

Pollutant:	Nitrobenzene
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.

Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.

Line of Evidence (LOE) for Decision ID 135681, Nitrobenzene	Region 4
Channel Islands Harbor

LOE ID:

264135

Pollutant:

Nitrobenzene

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The nitrobenzene criterion for the protection of human health from consumption of organisms only is 1,900 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-17 (Oxn_CI-17_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2019-12-04 and 2019-12-04

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY


DECISION ID	149377	Region 4
Channel Islands Harbor

Pollutant:	Nitrogen, Nitrate
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the CWA section 303(d) List in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. 0 of 60 samples exceeded the OBJECTIVE and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.

Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because applicable water quality standards are not being exceeded.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.

Line of Evidence (LOE) for Decision ID 149377, Nitrogen, Nitrate	Region 4
Channel Islands Harbor

LOE ID:

302202

Pollutant:

Nitrogen, Nitrate

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region (page 3-34) states that: Waters shall not exceed 10 mg/L as nitrate-nitrogen (NO3-N).

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI001 (Oxn_CI001_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-07-06 and 2018-07-06

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149377, Nitrogen, Nitrate	Region 4
Channel Islands Harbor

LOE ID:

302265

Pollutant:

Nitrogen, Nitrate

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region (page 3-34) states that: Waters shall not exceed 10 mg/L as nitrate-nitrogen (NO3-N).

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-15 (Oxn_CI-15_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-11-29

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149377, Nitrogen, Nitrate	Region 4
Channel Islands Harbor

LOE ID:

302342

Pollutant:

Nitrogen, Nitrate

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region (page 3-34) states that: Waters shall not exceed 10 mg/L as nitrate-nitrogen (NO3-N).

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-23 (Oxn_CI-23_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-11-29

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149377, Nitrogen, Nitrate	Region 4
Channel Islands Harbor

LOE ID:

302434

Pollutant:

Nitrogen, Nitrate

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region (page 3-34) states that: Waters shall not exceed 10 mg/L as nitrate-nitrogen (NO3-N).

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI010 (Oxn_CI010_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-07-06 and 2018-07-06

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149377, Nitrogen, Nitrate	Region 4
Channel Islands Harbor

LOE ID:

302198

Pollutant:

Nitrogen, Nitrate

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region (page 3-34) states that: Waters shall not exceed 10 mg/L as nitrate-nitrogen (NO3-N).

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-08 (Oxn_CI-08_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-11-29

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149377, Nitrogen, Nitrate	Region 4
Channel Islands Harbor

LOE ID:

302200

Pollutant:

Nitrogen, Nitrate

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region (page 3-34) states that: Waters shall not exceed 10 mg/L as nitrate-nitrogen (NO3-N).

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-11 (Oxn_CI-11_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-11-29

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149377, Nitrogen, Nitrate	Region 4
Channel Islands Harbor

LOE ID:

302374

Pollutant:

Nitrogen, Nitrate

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region (page 3-34) states that: Waters shall not exceed 10 mg/L as nitrate-nitrogen (NO3-N).

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI013 (Oxn_CI013_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-07-06 and 2018-07-06

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149377, Nitrogen, Nitrate	Region 4
Channel Islands Harbor

LOE ID:

302249

Pollutant:

Nitrogen, Nitrate

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region (page 3-34) states that: Waters shall not exceed 10 mg/L as nitrate-nitrogen (NO3-N).

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-07 (Oxn_CI-07_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-11-29

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149377, Nitrogen, Nitrate	Region 4
Channel Islands Harbor

LOE ID:

302422

Pollutant:

Nitrogen, Nitrate

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region (page 3-34) states that: Waters shall not exceed 10 mg/L as nitrate-nitrogen (NO3-N).

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-09 (Oxn_CI-09_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-11-29

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149377, Nitrogen, Nitrate	Region 4
Channel Islands Harbor

LOE ID:

302260

Pollutant:

Nitrogen, Nitrate

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region (page 3-34) states that: Waters shall not exceed 10 mg/L as nitrate-nitrogen (NO3-N).

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-22 (Oxn_CI-22_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-11-29

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149377, Nitrogen, Nitrate	Region 4
Channel Islands Harbor

LOE ID:

302348

Pollutant:

Nitrogen, Nitrate

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region (page 3-34) states that: Waters shall not exceed 10 mg/L as nitrate-nitrogen (NO3-N).

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-16 (Oxn_CI-16_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-11-29

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149377, Nitrogen, Nitrate	Region 4
Channel Islands Harbor

LOE ID:

302183

Pollutant:

Nitrogen, Nitrate

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region (page 3-34) states that: Waters shall not exceed 10 mg/L as nitrate-nitrogen (NO3-N).

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-27 (Oxn_CI-27_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-11-29

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149377, Nitrogen, Nitrate	Region 4
Channel Islands Harbor

LOE ID:

302207

Pollutant:

Nitrogen, Nitrate

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region (page 3-34) states that: Waters shall not exceed 10 mg/L as nitrate-nitrogen (NO3-N).

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI004 (Oxn_CI004_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-07-06 and 2018-07-06

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149377, Nitrogen, Nitrate	Region 4
Channel Islands Harbor

LOE ID:

302215

Pollutant:

Nitrogen, Nitrate

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region (page 3-34) states that: Waters shall not exceed 10 mg/L as nitrate-nitrogen (NO3-N).

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-21 (Oxn_CI-21_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-11-29

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149377, Nitrogen, Nitrate	Region 4
Channel Islands Harbor

LOE ID:

302406

Pollutant:

Nitrogen, Nitrate

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region (page 3-34) states that: Waters shall not exceed 10 mg/L as nitrate-nitrogen (NO3-N).

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-18 (Oxn_CI-18_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-11-29

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149377, Nitrogen, Nitrate	Region 4
Channel Islands Harbor

LOE ID:

302209

Pollutant:

Nitrogen, Nitrate

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region (page 3-34) states that: Waters shall not exceed 10 mg/L as nitrate-nitrogen (NO3-N).

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-17 (Oxn_CI-17_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-11-29

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149377, Nitrogen, Nitrate	Region 4
Channel Islands Harbor

LOE ID:

302201

Pollutant:

Nitrogen, Nitrate

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region (page 3-34) states that: Waters shall not exceed 10 mg/L as nitrate-nitrogen (NO3-N).

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI016 (Oxn_CI016_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-07-06 and 2018-07-06

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149377, Nitrogen, Nitrate	Region 4
Channel Islands Harbor

LOE ID:

302299

Pollutant:

Nitrogen, Nitrate

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region (page 3-34) states that: Waters shall not exceed 10 mg/L as nitrate-nitrogen (NO3-N).

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-13 (Oxn_CI-13_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-11-29

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149377, Nitrogen, Nitrate	Region 4
Channel Islands Harbor

LOE ID:

302213

Pollutant:

Nitrogen, Nitrate

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region (page 3-34) states that: Waters shall not exceed 10 mg/L as nitrate-nitrogen (NO3-N).

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-03 (Oxn_CI-03_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-11-29

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149377, Nitrogen, Nitrate	Region 4
Channel Islands Harbor

LOE ID:

302334

Pollutant:

Nitrogen, Nitrate

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region (page 3-34) states that: Waters shall not exceed 10 mg/L as nitrate-nitrogen (NO3-N).

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-14 (Oxn_CI-14_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-11-29

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149377, Nitrogen, Nitrate	Region 4
Channel Islands Harbor

LOE ID:

302326

Pollutant:

Nitrogen, Nitrate

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region (page 3-34) states that: Waters shall not exceed 10 mg/L as nitrate-nitrogen (NO3-N).

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-26 (Oxn_CI-26_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-11-29

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149377, Nitrogen, Nitrate	Region 4
Channel Islands Harbor

LOE ID:

302387

Pollutant:

Nitrogen, Nitrate

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region (page 3-34) states that: Waters shall not exceed 10 mg/L as nitrate-nitrogen (NO3-N).

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-31 (Oxn_CI-31_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-11-29

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149377, Nitrogen, Nitrate	Region 4
Channel Islands Harbor

LOE ID:

302312

Pollutant:

Nitrogen, Nitrate

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region (page 3-34) states that: Waters shall not exceed 10 mg/L as nitrate-nitrogen (NO3-N).

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI014 (Oxn_CI014_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-07-06 and 2018-07-06

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149377, Nitrogen, Nitrate	Region 4
Channel Islands Harbor

LOE ID:

302287

Pollutant:

Nitrogen, Nitrate

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region (page 3-34) states that: Waters shall not exceed 10 mg/L as nitrate-nitrogen (NO3-N).

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI008 (Oxn_CI008_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-07-06 and 2018-07-06

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149377, Nitrogen, Nitrate	Region 4
Channel Islands Harbor

LOE ID:

302343

Pollutant:

Nitrogen, Nitrate

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region (page 3-34) states that: Waters shall not exceed 10 mg/L as nitrate-nitrogen (NO3-N).

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-20 (Oxn_CI-20_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-11-29

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149377, Nitrogen, Nitrate	Region 4
Channel Islands Harbor

LOE ID:

302417

Pollutant:

Nitrogen, Nitrate

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region (page 3-34) states that: Waters shall not exceed 10 mg/L as nitrate-nitrogen (NO3-N).

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-12 (Oxn_CI-12_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-11-29

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149377, Nitrogen, Nitrate	Region 4
Channel Islands Harbor

LOE ID:

302214

Pollutant:

Nitrogen, Nitrate

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region (page 3-34) states that: Waters shall not exceed 10 mg/L as nitrate-nitrogen (NO3-N).

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI006 (Oxn_CI006_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-07-06 and 2018-07-06

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149377, Nitrogen, Nitrate	Region 4
Channel Islands Harbor

LOE ID:

302278

Pollutant:

Nitrogen, Nitrate

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region (page 3-34) states that: Waters shall not exceed 10 mg/L as nitrate-nitrogen (NO3-N).

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-06 (Oxn_CI-06_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-09 and 2018-11-29

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149377, Nitrogen, Nitrate	Region 4
Channel Islands Harbor

LOE ID:

302344

Pollutant:

Nitrogen, Nitrate

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region (page 3-34) states that: Waters shall not exceed 10 mg/L as nitrate-nitrogen (NO3-N).

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI003 (Oxn_CI003_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-07-06 and 2018-07-06

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149377, Nitrogen, Nitrate	Region 4
Channel Islands Harbor

LOE ID:

302271

Pollutant:

Nitrogen, Nitrate

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region (page 3-34) states that: Waters shall not exceed 10 mg/L as nitrate-nitrogen (NO3-N).

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-25 (Oxn_CI-25_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-11-29

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149377, Nitrogen, Nitrate	Region 4
Channel Islands Harbor

LOE ID:

302217

Pollutant:

Nitrogen, Nitrate

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region (page 3-34) states that: Waters shall not exceed 10 mg/L as nitrate-nitrogen (NO3-N).

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-10 (Oxn_CI-10_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-11-29

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149377, Nitrogen, Nitrate	Region 4
Channel Islands Harbor

LOE ID:

302464

Pollutant:

Nitrogen, Nitrate

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region (page 3-34) states that: Waters shall not exceed 10 mg/L as nitrate-nitrogen (NO3-N).

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-02 (Oxn_CI-02_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-11-29

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149377, Nitrogen, Nitrate	Region 4
Channel Islands Harbor

LOE ID:

302456

Pollutant:

Nitrogen, Nitrate

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region (page 3-34) states that: Waters shall not exceed 10 mg/L as nitrate-nitrogen (NO3-N).

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-24 (Oxn_CI-24_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-11-29

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149377, Nitrogen, Nitrate	Region 4
Channel Islands Harbor

LOE ID:

302441

Pollutant:

Nitrogen, Nitrate

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region (page 3-34) states that: Waters shall not exceed 10 mg/L as nitrate-nitrogen (NO3-N).

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-19 (Oxn_CI-19_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-11-29

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 149377, Nitrogen, Nitrate	Region 4
Channel Islands Harbor

LOE ID:

302359

Pollutant:

Nitrogen, Nitrate

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region (page 3-34) states that: Waters shall not exceed 10 mg/L as nitrate-nitrogen (NO3-N).

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI005 (Oxn_CI005_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-07-06 and 2018-07-06

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY


DECISION ID	151868	Region 4
Channel Islands Harbor

Pollutant:	Oxygen, Dissolved
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	This pollutant is being considered for placement on the CWA section 303(d) List under section 3.2 of the Listing Policy. Under section 3.2 a single line of evidence is necessary to assess listing status. 60 lines of evidence are available in the administrative record to assess this pollutant. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the CWA section 303(d) List. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. 36 of 638 samples exceeded theobjective and this does not exceed the allowable frequency listed in Table 3.2 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.

Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because applicable water quality standards are not being exceeded.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.

Line of Evidence (LOE) for Decision ID 151868, Oxygen, Dissolved	Region 4
Channel Islands Harbor

LOE ID:

307937

Pollutant:

Oxygen, Dissolved

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support and results are as follows: 1 of 36 samples exceeded the water quality threshold for Oxygen, Dissolved.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: At a minimum... no single determination shall be less than 5.0 mg/L.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-20 (Oxn_CI-20_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-06-23 and 2019-03-18

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 151868, Oxygen, Dissolved	Region 4
Channel Islands Harbor

LOE ID:

307918

Pollutant:

Oxygen, Dissolved

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: At a minimum... no single determination shall be less than 5.0 mg/L.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: 410CHN003 (Channel Islands Harbor CI3).

Temporal Representation:

The samples were collected between the dates of 2017-05-24 and 2017-05-24

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 151868, Oxygen, Dissolved	Region 4
Channel Islands Harbor

LOE ID:

307921

Pollutant:

Oxygen, Dissolved

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region (page 3-39) states that: At a minimum (see specifics below), the mean annual dissolved oxygen concentration of all waters shall be greater than 7 mg/L.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-15 (Oxn_CI-15_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-11-29 and 2018-11-29

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 151868, Oxygen, Dissolved	Region 4
Channel Islands Harbor

LOE ID:

307868

Pollutant:

Oxygen, Dissolved

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support and results are as follows: 1 of 30 samples exceeded the water quality threshold for Oxygen, Dissolved.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: At a minimum... no single determination shall be less than 5.0 mg/L.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-12 (Oxn_CI-12_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-06-23 and 2018-12-03

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 151868, Oxygen, Dissolved	Region 4
Channel Islands Harbor

LOE ID:

308219

Pollutant:

Oxygen, Dissolved

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-26 (Oxn_CI-26_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-12-03 and 2019-01-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 151868, Oxygen, Dissolved	Region 4
Channel Islands Harbor

LOE ID:

308366

Pollutant:

Oxygen, Dissolved

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support and results are as follows: 2 of 33 samples exceeded the water quality threshold for Oxygen, Dissolved.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: At a minimum... no single determination shall be less than 5.0 mg/L.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-26 (Oxn_CI-26_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-06-23 and 2019-01-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 151868, Oxygen, Dissolved	Region 4
Channel Islands Harbor

LOE ID:

308394

Pollutant:

Oxygen, Dissolved

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support and results are as follows: 1 of 37 samples exceeded the water quality threshold for Oxygen, Dissolved.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: At a minimum... no single determination shall be less than 5.0 mg/L.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-22 (Oxn_CI-22_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-06-23 and 2019-03-18

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 151868, Oxygen, Dissolved	Region 4
Channel Islands Harbor

LOE ID:

307791

Pollutant:

Oxygen, Dissolved

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-19 (Oxn_CI-19_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-11-29 and 2018-11-29

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 151868, Oxygen, Dissolved	Region 4
Channel Islands Harbor

LOE ID:

307818

Pollutant:

Oxygen, Dissolved

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-08 (Oxn_CI-08_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-11-29 and 2018-11-29

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 151868, Oxygen, Dissolved	Region 4
Channel Islands Harbor

LOE ID:

308465

Pollutant:

Oxygen, Dissolved

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: At a minimum... no single determination shall be less than 5.0 mg/L.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-31 (Oxn_CI-31_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-11-22 and 2018-11-29

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 151868, Oxygen, Dissolved	Region 4
Channel Islands Harbor

LOE ID:

308181

Pollutant:

Oxygen, Dissolved

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support and results are as follows: 2 of 17 samples exceeded the water quality threshold for Oxygen, Dissolved.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: At a minimum... no single determination shall be less than 5.0 mg/L.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-25 (Oxn_CI-25_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-06-23 and 2018-11-29

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 151868, Oxygen, Dissolved	Region 4
Channel Islands Harbor

LOE ID:

308434

Pollutant:

Oxygen, Dissolved

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: 410CHN005 (Channel Islands Harbor CI5).

Temporal Representation:

The samples were collected between the dates of 2017-05-24 and 2017-05-24

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 151868, Oxygen, Dissolved	Region 4
Channel Islands Harbor

LOE ID:

307796

Pollutant:

Oxygen, Dissolved

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-02 (Oxn_CI-02_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-11-29 and 2018-11-29

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 151868, Oxygen, Dissolved	Region 4
Channel Islands Harbor

LOE ID:

307820

Pollutant:

Oxygen, Dissolved

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support and results are as follows: 0 of 17 samples exceeded the water quality threshold for Oxygen, Dissolved.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: At a minimum... no single determination shall be less than 5.0 mg/L.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-15 (Oxn_CI-15_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-06-23 and 2018-11-29

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 151868, Oxygen, Dissolved	Region 4
Channel Islands Harbor

LOE ID:

307913

Pollutant:

Oxygen, Dissolved

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support and results are as follows: 2 of 37 samples exceeded the water quality threshold for Oxygen, Dissolved.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: At a minimum... no single determination shall be less than 5.0 mg/L.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-23 (Oxn_CI-23_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-06-23 and 2019-03-19

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 151868, Oxygen, Dissolved	Region 4
Channel Islands Harbor

LOE ID:

307891

Pollutant:

Oxygen, Dissolved

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-03 (Oxn_CI-03_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-11-29 and 2018-11-29

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 151868, Oxygen, Dissolved	Region 4
Channel Islands Harbor

LOE ID:

307869

Pollutant:

Oxygen, Dissolved

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-14 (Oxn_CI-14_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-11-29 and 2018-11-29

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 151868, Oxygen, Dissolved	Region 4
Channel Islands Harbor

LOE ID:

308282

Pollutant:

Oxygen, Dissolved

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-25 (Oxn_CI-25_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-11-29 and 2018-11-29

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 151868, Oxygen, Dissolved	Region 4
Channel Islands Harbor

LOE ID:

308013

Pollutant:

Oxygen, Dissolved

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-06 (Oxn_CI-06_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-12-03 and 2019-04-15

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 151868, Oxygen, Dissolved	Region 4
Channel Islands Harbor

LOE ID:

308250

Pollutant:

Oxygen, Dissolved

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: 410CHN003 (Channel Islands Harbor CI3).

Temporal Representation:

The samples were collected between the dates of 2017-05-24 and 2017-05-24

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 151868, Oxygen, Dissolved	Region 4
Channel Islands Harbor

LOE ID:

308131

Pollutant:

Oxygen, Dissolved

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support and results are as follows: 0 of 39 samples exceeded the water quality threshold for Oxygen, Dissolved.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: At a minimum... no single determination shall be less than 5.0 mg/L.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-06 (Oxn_CI-06_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-06-23 and 2019-04-15

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 151868, Oxygen, Dissolved	Region 4
Channel Islands Harbor

LOE ID:

308145

Pollutant:

Oxygen, Dissolved

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-13 (Oxn_CI-13_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-11-29 and 2018-11-29

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 151868, Oxygen, Dissolved	Region 4
Channel Islands Harbor

LOE ID:

307852

Pollutant:

Oxygen, Dissolved

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: 410CHN004 (Channel Islands Harbor CI4).

Temporal Representation:

The samples were collected between the dates of 2017-05-24 and 2017-05-24

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 151868, Oxygen, Dissolved	Region 4
Channel Islands Harbor

LOE ID:

307985

Pollutant:

Oxygen, Dissolved

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support and results are as follows: 3 of 18 samples exceeded the water quality threshold for Oxygen, Dissolved.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: At a minimum... no single determination shall be less than 5.0 mg/L.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-08 (Oxn_CI-08_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-06-23 and 2018-11-29

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 151868, Oxygen, Dissolved	Region 4
Channel Islands Harbor

LOE ID:

308170

Pollutant:

Oxygen, Dissolved

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support and results are as follows: 0 of 35 samples exceeded the water quality threshold for Oxygen, Dissolved.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: At a minimum... no single determination shall be less than 5.0 mg/L.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-16 (Oxn_CI-16_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-06-23 and 2019-01-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 151868, Oxygen, Dissolved	Region 4
Channel Islands Harbor

LOE ID:

308299

Pollutant:

Oxygen, Dissolved

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support and results are as follows: 1 of 17 samples exceeded the water quality threshold for Oxygen, Dissolved.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: At a minimum... no single determination shall be less than 5.0 mg/L.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-13 (Oxn_CI-13_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-06-23 and 2018-11-29

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 151868, Oxygen, Dissolved	Region 4
Channel Islands Harbor

LOE ID:

308044

Pollutant:

Oxygen, Dissolved

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-17 (Oxn_CI-17_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-11-29 and 2018-11-29

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 151868, Oxygen, Dissolved	Region 4
Channel Islands Harbor

LOE ID:

308517

Pollutant:

Oxygen, Dissolved

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-22 (Oxn_CI-22_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-12-03 and 2019-03-18

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 151868, Oxygen, Dissolved	Region 4
Channel Islands Harbor

LOE ID:

307819

Pollutant:

Oxygen, Dissolved

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: At a minimum... no single determination shall be less than 5.0 mg/L.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-11 (Oxn_CI-11_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-06-23 and 2018-11-29

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 151868, Oxygen, Dissolved	Region 4
Channel Islands Harbor

LOE ID:

307988

Pollutant:

Oxygen, Dissolved

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: At a minimum... no single determination shall be less than 5.0 mg/L.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-17 (Oxn_CI-17_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-06-23 and 2018-11-29

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 151868, Oxygen, Dissolved	Region 4
Channel Islands Harbor

LOE ID:

308461

Pollutant:

Oxygen, Dissolved

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-20 (Oxn_CI-20_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-12-03 and 2019-03-18

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 151868, Oxygen, Dissolved	Region 4
Channel Islands Harbor

LOE ID:

308167

Pollutant:

Oxygen, Dissolved

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-12 (Oxn_CI-12_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-12-03 and 2018-12-03

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 151868, Oxygen, Dissolved	Region 4
Channel Islands Harbor

LOE ID:

308032

Pollutant:

Oxygen, Dissolved

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support and results are as follows: 1 of 39 samples exceeded the water quality threshold for Oxygen, Dissolved.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: At a minimum... no single determination shall be less than 5.0 mg/L.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-07 (Oxn_CI-07_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-06-23 and 2019-03-18

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 151868, Oxygen, Dissolved	Region 4
Channel Islands Harbor

LOE ID:

308072

Pollutant:

Oxygen, Dissolved

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-27 (Oxn_CI-27_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-11-29 and 2018-11-29

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 151868, Oxygen, Dissolved	Region 4
Channel Islands Harbor

LOE ID:

308377

Pollutant:

Oxygen, Dissolved

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-31 (Oxn_CI-31_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-11-29 and 2018-11-29

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 151868, Oxygen, Dissolved	Region 4
Channel Islands Harbor

LOE ID:

307888

Pollutant:

Oxygen, Dissolved

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-07 (Oxn_CI-07_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-12-03 and 2019-03-18

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 151868, Oxygen, Dissolved	Region 4
Channel Islands Harbor

LOE ID:

307893

Pollutant:

Oxygen, Dissolved

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: At a minimum... no single determination shall be less than 5.0 mg/L.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-03 (Oxn_CI-03_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-06-23 and 2018-11-29

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 151868, Oxygen, Dissolved	Region 4
Channel Islands Harbor

LOE ID:

308320

Pollutant:

Oxygen, Dissolved

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: At a minimum... no single determination shall be less than 5.0 mg/L.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: 410CHN005 (Channel Islands Harbor CI5).

Temporal Representation:

The samples were collected between the dates of 2017-05-24 and 2017-05-24

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 151868, Oxygen, Dissolved	Region 4
Channel Islands Harbor

LOE ID:

308211

Pollutant:

Oxygen, Dissolved

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: At a minimum... no single determination shall be less than 5.0 mg/L.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: 410CHN004 (Channel Islands Harbor CI4).

Temporal Representation:

The samples were collected between the dates of 2017-05-24 and 2017-05-24

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 151868, Oxygen, Dissolved	Region 4
Channel Islands Harbor

LOE ID:

308047

Pollutant:

Oxygen, Dissolved

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support and results are as follows: 2 of 30 samples exceeded the water quality threshold for Oxygen, Dissolved.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: At a minimum... no single determination shall be less than 5.0 mg/L.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-18 (Oxn_CI-18_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-06-23 and 2019-01-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 151868, Oxygen, Dissolved	Region 4
Channel Islands Harbor

LOE ID:

308071

Pollutant:

Oxygen, Dissolved

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: At a minimum... no single determination shall be less than 5.0 mg/L.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-02 (Oxn_CI-02_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-06-23 and 2018-11-29

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 151868, Oxygen, Dissolved	Region 4
Channel Islands Harbor

LOE ID:

308091

Pollutant:

Oxygen, Dissolved

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-11 (Oxn_CI-11_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-11-29 and 2018-11-29

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 151868, Oxygen, Dissolved	Region 4
Channel Islands Harbor

LOE ID:

307792

Pollutant:

Oxygen, Dissolved

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-09 (Oxn_CI-09_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-12-03 and 2019-01-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 151868, Oxygen, Dissolved	Region 4
Channel Islands Harbor

LOE ID:

307896

Pollutant:

Oxygen, Dissolved

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support and results are as follows: 2 of 35 samples exceeded the water quality threshold for Oxygen, Dissolved.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: At a minimum... no single determination shall be less than 5.0 mg/L.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-24 (Oxn_CI-24_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-06-23 and 2019-03-18

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 151868, Oxygen, Dissolved	Region 4
Channel Islands Harbor

LOE ID:

307876

Pollutant:

Oxygen, Dissolved

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-18 (Oxn_CI-18_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-12-03 and 2019-01-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 151868, Oxygen, Dissolved	Region 4
Channel Islands Harbor

LOE ID:

307938

Pollutant:

Oxygen, Dissolved

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: At a minimum... no single determination shall be less than 5.0 mg/L.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-10 (Oxn_CI-10_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-06-23 and 2018-11-29

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 151868, Oxygen, Dissolved	Region 4
Channel Islands Harbor

LOE ID:

307944

Pollutant:

Oxygen, Dissolved

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: At a minimum... no single determination shall be less than 5.0 mg/L.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-27 (Oxn_CI-27_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-11-22 and 2018-11-29

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 151868, Oxygen, Dissolved	Region 4
Channel Islands Harbor

LOE ID:

307894

Pollutant:

Oxygen, Dissolved

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: At a minimum... no single determination shall be less than 5.0 mg/L.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-14 (Oxn_CI-14_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-06-23 and 2018-11-29

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 151868, Oxygen, Dissolved	Region 4
Channel Islands Harbor

LOE ID:

307895

Pollutant:

Oxygen, Dissolved

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-24 (Oxn_CI-24_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-12-03 and 2019-03-18

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 151868, Oxygen, Dissolved	Region 4
Channel Islands Harbor

LOE ID:

308414

Pollutant:

Oxygen, Dissolved

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: 410CHN001 (Channel Islands Harbor CI1).

Temporal Representation:

The samples were collected between the dates of 2017-05-24 and 2017-05-24

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 151868, Oxygen, Dissolved	Region 4
Channel Islands Harbor

LOE ID:

308215

Pollutant:

Oxygen, Dissolved

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: At a minimum... no single determination shall be less than 5.0 mg/L.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: 410CHN002 (Channel Islands Harbor CI2).

Temporal Representation:

The samples were collected between the dates of 2017-05-24 and 2017-05-24

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 151868, Oxygen, Dissolved	Region 4
Channel Islands Harbor

LOE ID:

308225

Pollutant:

Oxygen, Dissolved

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: At a minimum... no single determination shall be less than 5.0 mg/L.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: 410CHN001 (Channel Islands Harbor CI1).

Temporal Representation:

The samples were collected between the dates of 2017-05-24 and 2017-05-24

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 151868, Oxygen, Dissolved	Region 4
Channel Islands Harbor

LOE ID:

307950

Pollutant:

Oxygen, Dissolved

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-23 (Oxn_CI-23_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-12-03 and 2019-03-19

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 151868, Oxygen, Dissolved	Region 4
Channel Islands Harbor

LOE ID:

307794

Pollutant:

Oxygen, Dissolved

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-21 (Oxn_CI-21_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-11-29 and 2018-11-29

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 151868, Oxygen, Dissolved	Region 4
Channel Islands Harbor

LOE ID:

307809

Pollutant:

Oxygen, Dissolved

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: At a minimum... no single determination shall be less than 5.0 mg/L.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-09 (Oxn_CI-09_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-06-23 and 2019-01-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 151868, Oxygen, Dissolved	Region 4
Channel Islands Harbor

LOE ID:

308492

Pollutant:

Oxygen, Dissolved

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: 410CHN002 (Channel Islands Harbor CI2).

Temporal Representation:

The samples were collected between the dates of 2017-05-24 and 2017-05-24

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 151868, Oxygen, Dissolved	Region 4
Channel Islands Harbor

LOE ID:

308495

Pollutant:

Oxygen, Dissolved

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: At a minimum... no single determination shall be less than 5.0 mg/L.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-21 (Oxn_CI-21_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-06-23 and 2018-11-29

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 151868, Oxygen, Dissolved	Region 4
Channel Islands Harbor

LOE ID:

307954

Pollutant:

Oxygen, Dissolved

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-16 (Oxn_CI-16_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-12-03 and 2019-01-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 151868, Oxygen, Dissolved	Region 4
Channel Islands Harbor

LOE ID:

308252

Pollutant:

Oxygen, Dissolved

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: At a minimum... no single determination shall be less than 5.0 mg/L.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-19 (Oxn_CI-19_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-06-23 and 2018-11-29

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 151868, Oxygen, Dissolved	Region 4
Channel Islands Harbor

LOE ID:

308135

Pollutant:

Oxygen, Dissolved

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-10 (Oxn_CI-10_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-11-29 and 2018-11-29

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY


DECISION ID	149384	Region 4
Channel Islands Harbor

Pollutant:	PAHs (Polycyclic Aromatic Hydrocarbons)
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)(2018)
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	This pollutant is being considered for placement on the CWA section 303(d) List under section 3.5 and 3.6 of the Listing Policy. Under section 3.5 a single line of evidence is necessary to assess listing status. Under section 3.6 at least two lines of evidence are necessary to assess listing status, and pollutant concentrations in sediment must be associated with sediment toxicity to justify adding that pollutant to the CWA section 303(d) List. 3 lines of evidence are available in the administrative record to assess this pollutant. 0 of 1 sample exceeded the GUIDELINE. 0 of 1 sample exceeded the GUIDELINE. 0 of 33 samples exceeded the GUIDELINE. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the CWA section 303(d) List. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. 0 of 1, 0 of 1 and 0 of 33 samples exceeded the GUIDELINE and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. There is not an associated sediment toxicity. 4. Pursuant to SECTION 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.

Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because applicable water quality standards are not being exceeded.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.

Line of Evidence (LOE) for Decision ID 149384, PAHs (Polycyclic Aromatic Hydrocarbons)	Region 4
Channel Islands Harbor

LOE ID:

248637

Pollutant:

PAHs (Polycyclic Aromatic Hydrocarbons)

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The evaluation guideline for high molecular weight PAH's is 9600 ng/g dry weight (Long et al., 1995).

Guideline Reference:

Incidence of adverse biological effects within ranges of chemical concentrations in marine and estuary sediments. Environmental Management. 19, (1): 81-97

Spatial Representation:

Data were collected from 1 station(s). Station Code(s): B18-10046 (B18-10046).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-08-15 to 2018-08-15

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 149384, PAHs (Polycyclic Aromatic Hydrocarbons)	Region 4
Channel Islands Harbor

LOE ID:

248741

Pollutant:

PAHs (Polycyclic Aromatic Hydrocarbons)

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The evaluation guideline for high molecular weight PAH's is 9600 ng/g dry weight (Long et al., 1995).

Guideline Reference:

Incidence of adverse biological effects within ranges of chemical concentrations in marine and estuary sediments. Environmental Management. 19, (1): 81-97

Spatial Representation:

Data were collected from 1 station(s). Station Code(s): 410CHN003 (Channel Islands Harbor CI3).

Temporal Representation:

Data for this waterbody were collected over the date range 2017-05-24 to 2017-05-24

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 149384, PAHs (Polycyclic Aromatic Hydrocarbons)	Region 4
Channel Islands Harbor

LOE ID:

250466

Pollutant:

PAHs (Polycyclic Aromatic Hydrocarbons)

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The sediment quality guideline for Total PAHs is 1800 ug/g organic carbon (Fairey et al., 2001).

Guideline Reference:

Spatial Representation:

Data were collected from 1 station(s). Station Code(s): 410CHN002 (Channel Islands Harbor CI2).

Temporal Representation:

Data for this waterbody were collected over the date range 2017-05-24 to 2017-05-24

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 149384, PAHs (Polycyclic Aromatic Hydrocarbons)	Region 4
Channel Islands Harbor

LOE ID:

250157

Pollutant:

PAHs (Polycyclic Aromatic Hydrocarbons)

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The sediment quality guideline for Total PAHs is 1800 ug/g organic carbon (Fairey et al., 2001).

Guideline Reference:

Spatial Representation:

Data were collected from 1 station(s). Station Code(s): B18-10046 (B18-10046).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-08-15 to 2018-08-15

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 149384, PAHs (Polycyclic Aromatic Hydrocarbons)	Region 4
Channel Islands Harbor

LOE ID:

249581

Pollutant:

PAHs (Polycyclic Aromatic Hydrocarbons)

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The evaluation guideline for low molecular weight PAHs is the probable effect level (PEL) of 1442 ug/kg dry weight (MacDonald et al., 1996).

Guideline Reference:

Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278

Spatial Representation:

Data were collected from 1 station(s). Station Code(s): 410CHN001 (Channel Islands Harbor CI1).

Temporal Representation:

Data for this waterbody were collected over the date range 2017-05-24 to 2017-05-24

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 149384, PAHs (Polycyclic Aromatic Hydrocarbons)	Region 4
Channel Islands Harbor

LOE ID:

249429

Pollutant:

PAHs (Polycyclic Aromatic Hydrocarbons)

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The evaluation guideline for low molecular weight PAHs is the probable effect level (PEL) of 1442 ug/kg dry weight (MacDonald et al., 1996).

Guideline Reference:

Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278

Spatial Representation:

Data were collected from 1 station(s). Station Code(s): 410CHN002 (Channel Islands Harbor CI2).

Temporal Representation:

Data for this waterbody were collected over the date range 2017-05-24 to 2017-05-24

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 149384, PAHs (Polycyclic Aromatic Hydrocarbons)	Region 4
Channel Islands Harbor

LOE ID:

83620

Pollutant:

Toxicity

LOE Subgroup:

Toxicity

Matrix:

Sediment

Fraction:

None

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

TOXICITY TESTING

Data Used to Assess Water Quality:

Data Reference:

RWB4 Miscellaneous Ventura Coastal 2006

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Revised approach to toxicity test acceptability criteria using a statistical performance assessment. Environmental Toxicology and Chemistry, vol. 16, No. 6, pp 1322¿1329

Spatial Representation:

The samples were collected at stations 410VHCHN1, 410VHCHN2, 410VHCHN3, 410VHCHN4, and 410VHCHN5.

Temporal Representation:

The samples were collected in October 2006.

Environmental Conditions:

QAPP Information:

Data quality is good. Data results were recorded in the SWAMP database and follwed SWAMP protocols.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 149384, PAHs (Polycyclic Aromatic Hydrocarbons)	Region 4
Channel Islands Harbor

LOE ID:

249023

Pollutant:

PAHs (Polycyclic Aromatic Hydrocarbons)

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The evaluation guideline for high molecular weight PAH's is 9600 ng/g dry weight (Long et al., 1995).

Guideline Reference:

Incidence of adverse biological effects within ranges of chemical concentrations in marine and estuary sediments. Environmental Management. 19, (1): 81-97

Spatial Representation:

Data were collected from 1 station(s). Station Code(s): 410CHN004 (Channel Islands Harbor CI4).

Temporal Representation:

Data for this waterbody were collected over the date range 2017-05-24 to 2017-05-24

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 149384, PAHs (Polycyclic Aromatic Hydrocarbons)	Region 4
Channel Islands Harbor

LOE ID:

250362

Pollutant:

PAHs (Polycyclic Aromatic Hydrocarbons)

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The sediment quality guideline for Total PAHs is 1800 ug/g organic carbon (Fairey et al., 2001).

Guideline Reference:

Spatial Representation:

Data were collected from 1 station(s). Station Code(s): 410CHN004 (Channel Islands Harbor CI4).

Temporal Representation:

Data for this waterbody were collected over the date range 2017-05-24 to 2017-05-24

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 149384, PAHs (Polycyclic Aromatic Hydrocarbons)	Region 4
Channel Islands Harbor

LOE ID:

83599

Pollutant:

PAHs (Polycyclic Aromatic Hydrocarbons)

LOE Subgroup:

Pollutant-Tissue

Matrix:

Tissue

Fraction:

Fish fillet

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

Fish tissue analysis

Data Used to Assess Water Quality:

The sample did not exceed the guideline. Data were reported on a dry weight basis and were converted to a wet weight basis by multiplying the dry-weight concentration by a factor of 1 minus the percentage of moisture content expressed as a decimal. The total PAHs were calculated as the potency equivalency concentration or the sum of the toxic equivalency factors multiplied by the concentrations of: Acenaphthene, Acenaphthylene, Anthracene, Benz[a]anthracene, Benzo[a]pyrene, Benzo[b]fluoranthene, Benzo[g,h,i]perylene, Benzo[k]fluoranthene, Dibenzo[a,h]anthracene, Chrysene, Fluoranthene, Fluorene, Indeno[1,2,3-c,d]pyrene, Phenanthrene, and Pyrene.

Data Reference:

RWB4 Miscellaneous Ventura Coastal 2006

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The modified OEHHA Fish Contaminant Goal for polycyclic aromatic hydrocarbons in fish tissue is 0.7 ppb. This screening level assumes an average body weight of 70 kg and a consumption rate of 32 g/day for a 30 year exposure over a 70-year lifetime. This constituent is a carcinogen therefore the risk level is set to one in a million. (Klasing, S., and R. Brodberg, 2008; USEPA, 2000)

Guideline Reference:

Development of Fish Contaminant Goals and Advisory Tissue Levels for Common Contaminants in California Sport Fish: Chlordane, DDTs, Dieldrin, Methylmercury, PCBs, Selenium, and Toxaphene

Guideline Reference:

Guidance for Assessing Chemical Contaminant Data for Use In Fish Advisories Volume 1: Fish Sampling and Analysis

Spatial Representation:

Samples are collected by hand from three sub-locations (A,B,C) from site 410VHCHN5. The three samples per site were averaged prior to assessment.

Temporal Representation:

Representative samples of locally abundant species were collected on February 28, 2007.

Environmental Conditions:

QAPP Information:

Samples were collected as part of the State Water Board's Surface Water Ambient Monitoring Program.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 149384, PAHs (Polycyclic Aromatic Hydrocarbons)	Region 4
Channel Islands Harbor

LOE ID:

82792

Pollutant:

PAHs (Polycyclic Aromatic Hydrocarbons)

LOE Subgroup:

Pollutant-Tissue

Matrix:

Tissue

Fraction:

Shellfish

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

Shellfish surveys

Data Used to Assess Water Quality:

The one sample did not exceed the guideline. PAH, Total is calculated as a potency weighted concentration with respect to benzo(a)pyrene and was calculated based on the following analytes: Dibenz(a,h)anthracene, Benzo(a)pyrene, Benz(a)anthracene, Benzo(b)fluoranthene, Benzo(k)fluoranthene, Indeno(1,2,3-c,d)pyrene, Anthracene, Benzo(g,h,i)perylene, Chrysene, Acenaphthene, Acenaphthylene, Fluoranthene, Fluorene, Phenanthrene, and Pyrene.

Data Reference:

RWB4 Miscellaneous Ventura Coastal 2006

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The modified OEHHA Fish Contaminant Goal for polycyclic aromatic hydrocarbons in shellfish tissue is 1.1 ppb. This screening level assumes an average body weight of 70 kg and a consumption rate of 21 g/day for a 30 year exposure over a 70-year lifetime. This constituent is a carcinogen therefore the risk level is set to one in a million. (Brodberg, R.K., and G.A. Pollock, 1999; Klasing, S., and R. Brodberg, 2008; USEPA, 2000)

Guideline Reference:

Prevalence of Selected Target Chemical Contaminants in Sport Fish From Two California Lakes: Public health designed screening study. Sacramento, CA: Office of Environmental Health Hazard Assessment

Guideline Reference:

Development of Fish Contaminant Goals and Advisory Tissue Levels for Common Contaminants in California Sport Fish: Chlordane, DDTs, Dieldrin, Methylmercury, PCBs, Selenium, and Toxaphene

Guideline Reference:

Guidance for Assessing Chemical Contaminant Data for Use In Fish Advisories Volume 1: Fish Sampling and Analysis

Spatial Representation:

Data was collected at one station: Channel Islands Harbor 5 - 410VHCHN5.

Temporal Representation:

Data was collected on a single day 2/28/2007.

Environmental Conditions:

QAPP Information:

Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002

QAPP Information Reference(s):

Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version)

Line of Evidence (LOE) for Decision ID 149384, PAHs (Polycyclic Aromatic Hydrocarbons)	Region 4
Channel Islands Harbor

LOE ID:

83596

Pollutant:

PAHs (Polycyclic Aromatic Hydrocarbons)

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Boardstaff assessed SWAMP data for Channel Islands Harbor to determine beneficial use support and results are as follows: 0 of 5 samples exceed the criterion for PAH, High molecular weight.

Data Reference:

RWB4 Miscellaneous Ventura Coastal 2006

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

In marine and estuarine sediments the effects range median (predictive of sediment toxicity for sediment-dwelling organisms) for High molecular weight PAHs is 9600 ng/g dry weight (Long et al., 1995).

Guideline Reference:

Incidence of adverse biological effects within ranges of chemical concentrations in marine and estuary sediments. Environmental Management. 19, (1): 81-97

Spatial Representation:

Temporal Representation:

Data was collected over the time period 10/11/2006-10/12/2006.

Environmental Conditions:

Staff is not aware of any special conditions that might affect interpretation of the data.

QAPP Information:

2002 QAMP (Quality Assurance Management Plan) for the State of California's Surface Water Ambient Monitoring Program

QAPP Information Reference(s):

Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version)

Line of Evidence (LOE) for Decision ID 149384, PAHs (Polycyclic Aromatic Hydrocarbons)	Region 4
Channel Islands Harbor

LOE ID:

83597

Pollutant:

PAHs (Polycyclic Aromatic Hydrocarbons)

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Boardstaff assessed SWAMP data for Channel Islands Harbor to determine beneficial use support and results are as follows: 0 of 5 samples exceed the criterion for PAH, Low molecular weight.

Data Reference:

RWB4 Miscellaneous Ventura Coastal 2006

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

In marine and estuarine sediments the effects range median (predictive of sediment toxicity for sediment-dwelling organisms) for Low molecular weight PAHs is 1442 ng/g dry weight (Long et al., 1995).

Guideline Reference:

Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278

Spatial Representation:

Temporal Representation:

Data was collected over the time period 10/11/2006-10/12/2006.

Environmental Conditions:

Staff is not aware of any special conditions that might affect interpretation of the data.

QAPP Information:

2002 QAMP (Quality Assurance Management Plan) for the State of California's Surface Water Ambient Monitoring Program

QAPP Information Reference(s):

Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version)

Line of Evidence (LOE) for Decision ID 149384, PAHs (Polycyclic Aromatic Hydrocarbons)	Region 4
Channel Islands Harbor

LOE ID:

83598

Pollutant:

PAHs (Polycyclic Aromatic Hydrocarbons)

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Boardstaff assessed SWAMP data for Channel Islands Harbor to determine beneficial use support and results are as follows: 0 of 5 samples exceed the criterion for PAHs (Polycyclic Aromatic Hydrocarbons).

Data Reference:

RWB4 Miscellaneous Ventura Coastal 2006

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

In marine and estuarine sediments the sediment quality guideline (predictive of sediment toxicity for sediment-dwelling organisms) for Total PAHs is 1800 ug/g (Fairey et al., 2001).

Guideline Reference:

Spatial Representation:

Temporal Representation:

Data was collected over the time period 10/11/2006-10/12/2006.

Environmental Conditions:

Staff is not aware of any special conditions that might affect interpretation of the data.

QAPP Information:

2002 QAMP (Quality Assurance Management Plan) for the State of California's Surface Water Ambient Monitoring Program

QAPP Information Reference(s):

Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version)

Line of Evidence (LOE) for Decision ID 149384, PAHs (Polycyclic Aromatic Hydrocarbons)	Region 4
Channel Islands Harbor

LOE ID:

249582

Pollutant:

PAHs (Polycyclic Aromatic Hydrocarbons)

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The evaluation guideline for low molecular weight PAHs is the probable effect level (PEL) of 1442 ug/kg dry weight (MacDonald et al., 1996).

Guideline Reference:

Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278

Spatial Representation:

Data were collected from 1 station(s). Station Code(s): 410CHN003 (Channel Islands Harbor CI3).

Temporal Representation:

Data for this waterbody were collected over the date range 2017-05-24 to 2017-05-24

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 149384, PAHs (Polycyclic Aromatic Hydrocarbons)	Region 4
Channel Islands Harbor

LOE ID:

248969

Pollutant:

PAHs (Polycyclic Aromatic Hydrocarbons)

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The evaluation guideline for high molecular weight PAH's is 9600 ng/g dry weight (Long et al., 1995).

Guideline Reference:

Incidence of adverse biological effects within ranges of chemical concentrations in marine and estuary sediments. Environmental Management. 19, (1): 81-97

Spatial Representation:

Data were collected from 1 station(s). Station Code(s): 410CHN005 (Channel Islands Harbor CI5).

Temporal Representation:

Data for this waterbody were collected over the date range 2017-05-24 to 2017-05-24

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 149384, PAHs (Polycyclic Aromatic Hydrocarbons)	Region 4
Channel Islands Harbor

LOE ID:

248743

Pollutant:

PAHs (Polycyclic Aromatic Hydrocarbons)

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The evaluation guideline for high molecular weight PAH's is 9600 ng/g dry weight (Long et al., 1995).

Guideline Reference:

Incidence of adverse biological effects within ranges of chemical concentrations in marine and estuary sediments. Environmental Management. 19, (1): 81-97

Spatial Representation:

Data were collected from 1 station(s). Station Code(s): 410CHN002 (Channel Islands Harbor CI2).

Temporal Representation:

Data for this waterbody were collected over the date range 2017-05-24 to 2017-05-24

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 149384, PAHs (Polycyclic Aromatic Hydrocarbons)	Region 4
Channel Islands Harbor

LOE ID:

249280

Pollutant:

PAHs (Polycyclic Aromatic Hydrocarbons)

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The evaluation guideline for low molecular weight PAHs is the probable effect level (PEL) of 1442 ug/kg dry weight (MacDonald et al., 1996).

Guideline Reference:

Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278

Spatial Representation:

Data were collected from 1 station(s). Station Code(s): 410CHN004 (Channel Islands Harbor CI4).

Temporal Representation:

Data for this waterbody were collected over the date range 2017-05-24 to 2017-05-24

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 149384, PAHs (Polycyclic Aromatic Hydrocarbons)	Region 4
Channel Islands Harbor

LOE ID:

250446

Pollutant:

PAHs (Polycyclic Aromatic Hydrocarbons)

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The sediment quality guideline for Total PAHs is 1800 ug/g organic carbon (Fairey et al., 2001).

Guideline Reference:

Spatial Representation:

Data were collected from 1 station(s). Station Code(s): 410CHN005 (Channel Islands Harbor CI5).

Temporal Representation:

Data for this waterbody were collected over the date range 2017-05-24 to 2017-05-24

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 149384, PAHs (Polycyclic Aromatic Hydrocarbons)	Region 4
Channel Islands Harbor

LOE ID:

249828

Pollutant:

PAHs (Polycyclic Aromatic Hydrocarbons)

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The sediment quality guideline for Total PAHs is 1800 ug/g organic carbon (Fairey et al., 2001).

Guideline Reference:

Spatial Representation:

Data were collected from 1 station(s). Station Code(s): 410CHN003 (Channel Islands Harbor CI3).

Temporal Representation:

Data for this waterbody were collected over the date range 2017-05-24 to 2017-05-24

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 149384, PAHs (Polycyclic Aromatic Hydrocarbons)	Region 4
Channel Islands Harbor

LOE ID:

250447

Pollutant:

PAHs (Polycyclic Aromatic Hydrocarbons)

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The sediment quality guideline for Total PAHs is 1800 ug/g organic carbon (Fairey et al., 2001).

Guideline Reference:

Spatial Representation:

Data were collected from 1 station(s). Station Code(s): 410CHN001 (Channel Islands Harbor CI1).

Temporal Representation:

Data for this waterbody were collected over the date range 2017-05-24 to 2017-05-24

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 149384, PAHs (Polycyclic Aromatic Hydrocarbons)	Region 4
Channel Islands Harbor

LOE ID:

248859

Pollutant:

PAHs (Polycyclic Aromatic Hydrocarbons)

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The evaluation guideline for high molecular weight PAH's is 9600 ng/g dry weight (Long et al., 1995).

Guideline Reference:

Incidence of adverse biological effects within ranges of chemical concentrations in marine and estuary sediments. Environmental Management. 19, (1): 81-97

Spatial Representation:

Data were collected from 1 station(s). Station Code(s): 410CHN001 (Channel Islands Harbor CI1).

Temporal Representation:

Data for this waterbody were collected over the date range 2017-05-24 to 2017-05-24

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 149384, PAHs (Polycyclic Aromatic Hydrocarbons)	Region 4
Channel Islands Harbor

LOE ID:

249539

Pollutant:

PAHs (Polycyclic Aromatic Hydrocarbons)

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The evaluation guideline for low molecular weight PAHs is the probable effect level (PEL) of 1442 ug/kg dry weight (MacDonald et al., 1996).

Guideline Reference:

Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278

Spatial Representation:

Data were collected from 1 station(s). Station Code(s): 410CHN005 (Channel Islands Harbor CI5).

Temporal Representation:

Data for this waterbody were collected over the date range 2017-05-24 to 2017-05-24

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 149384, PAHs (Polycyclic Aromatic Hydrocarbons)	Region 4
Channel Islands Harbor

LOE ID:

249292

Pollutant:

PAHs (Polycyclic Aromatic Hydrocarbons)

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The evaluation guideline for low molecular weight PAHs is the probable effect level (PEL) of 1442 ug/kg dry weight (MacDonald et al., 1996).

Guideline Reference:

Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278

Spatial Representation:

Data were collected from 1 station(s). Station Code(s): B18-10046 (B18-10046).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-08-15 to 2018-08-15

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.


DECISION ID	135696	Region 4
Channel Islands Harbor

Pollutant:	PCBs (Polychlorinated biphenyls)
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)(2018)
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.

Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.

Line of Evidence (LOE) for Decision ID 135696, PCBs (Polychlorinated biphenyls)	Region 4
Channel Islands Harbor

LOE ID:

264522

Pollutant:

PCBs (Polychlorinated biphenyls)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for PCBs (Polychlorinated biphenyls). Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The PCB, total aroclors criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.03 ug/L. This value corresponds to the sum of aroclors 1242, 1254, 1221, 1232, 1248, 1260, and 1016 (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-26 (Oxn_CI-26_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135696, PCBs (Polychlorinated biphenyls)	Region 4
Channel Islands Harbor

LOE ID:

264521

Pollutant:

PCBs (Polychlorinated biphenyls)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for PCBs (Polychlorinated biphenyls). Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-14 (Oxn_CI-14_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135696, PCBs (Polychlorinated biphenyls)	Region 4
Channel Islands Harbor

LOE ID:

264691

Pollutant:

PCBs (Polychlorinated biphenyls)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for PCBs (Polychlorinated biphenyls). Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-06 (Oxn_CI-06_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135696, PCBs (Polychlorinated biphenyls)	Region 4
Channel Islands Harbor

LOE ID:

264695

Pollutant:

PCBs (Polychlorinated biphenyls)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for PCBs (Polychlorinated biphenyls). Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-18 (Oxn_CI-18_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135696, PCBs (Polychlorinated biphenyls)	Region 4
Channel Islands Harbor

LOE ID:

264535

Pollutant:

PCBs (Polychlorinated biphenyls)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for PCBs (Polychlorinated biphenyls). Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-09 (Oxn_CI-09_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135696, PCBs (Polychlorinated biphenyls)	Region 4
Channel Islands Harbor

LOE ID:

264539

Pollutant:

PCBs (Polychlorinated biphenyls)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for PCBs (Polychlorinated biphenyls). Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-22 (Oxn_CI-22_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135696, PCBs (Polychlorinated biphenyls)	Region 4
Channel Islands Harbor

LOE ID:

264625

Pollutant:

PCBs (Polychlorinated biphenyls)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for PCBs (Polychlorinated biphenyls). Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-20 (Oxn_CI-20_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135696, PCBs (Polychlorinated biphenyls)	Region 4
Channel Islands Harbor

LOE ID:

264626

Pollutant:

PCBs (Polychlorinated biphenyls)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for PCBs (Polychlorinated biphenyls). Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-21 (Oxn_CI-21_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135696, PCBs (Polychlorinated biphenyls)	Region 4
Channel Islands Harbor

LOE ID:

264464

Pollutant:

PCBs (Polychlorinated biphenyls)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for PCBs (Polychlorinated biphenyls). Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-13 (Oxn_CI-13_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135696, PCBs (Polychlorinated biphenyls)	Region 4
Channel Islands Harbor

LOE ID:

264642

Pollutant:

PCBs (Polychlorinated biphenyls)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for PCBs (Polychlorinated biphenyls). Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-24 (Oxn_CI-24_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135696, PCBs (Polychlorinated biphenyls)	Region 4
Channel Islands Harbor

LOE ID:

264556

Pollutant:

PCBs (Polychlorinated biphenyls)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for PCBs (Polychlorinated biphenyls). Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-02 (Oxn_CI-02_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-11-29

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135696, PCBs (Polychlorinated biphenyls)	Region 4
Channel Islands Harbor

LOE ID:

264557

Pollutant:

PCBs (Polychlorinated biphenyls)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for PCBs (Polychlorinated biphenyls). Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-19 (Oxn_CI-19_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135696, PCBs (Polychlorinated biphenyls)	Region 4
Channel Islands Harbor

LOE ID:

264559

Pollutant:

PCBs (Polychlorinated biphenyls)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for PCBs (Polychlorinated biphenyls). Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-12 (Oxn_CI-12_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135696, PCBs (Polychlorinated biphenyls)	Region 4
Channel Islands Harbor

LOE ID:

264479

Pollutant:

PCBs (Polychlorinated biphenyls)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for PCBs (Polychlorinated biphenyls). Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-16 (Oxn_CI-16_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135696, PCBs (Polychlorinated biphenyls)	Region 4
Channel Islands Harbor

LOE ID:

264481

Pollutant:

PCBs (Polychlorinated biphenyls)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for PCBs (Polychlorinated biphenyls). Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-23 (Oxn_CI-23_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135696, PCBs (Polychlorinated biphenyls)	Region 4
Channel Islands Harbor

LOE ID:

264499

Pollutant:

PCBs (Polychlorinated biphenyls)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for PCBs (Polychlorinated biphenyls). Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-08 (Oxn_CI-08_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135696, PCBs (Polychlorinated biphenyls)	Region 4
Channel Islands Harbor

LOE ID:

264502

Pollutant:

PCBs (Polychlorinated biphenyls)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for PCBs (Polychlorinated biphenyls). Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-17 (Oxn_CI-17_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2019-12-04

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135696, PCBs (Polychlorinated biphenyls)	Region 4
Channel Islands Harbor

LOE ID:

264587

Pollutant:

PCBs (Polychlorinated biphenyls)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for PCBs (Polychlorinated biphenyls). Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-10 (Oxn_CI-10_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135696, PCBs (Polychlorinated biphenyls)	Region 4
Channel Islands Harbor

LOE ID:

264516

Pollutant:

PCBs (Polychlorinated biphenyls)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for PCBs (Polychlorinated biphenyls). Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-25 (Oxn_CI-25_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135696, PCBs (Polychlorinated biphenyls)	Region 4
Channel Islands Harbor

LOE ID:

250422

Pollutant:

PCBs (Polychlorinated biphenyls)

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The value used in this assessment comes from MacDonald et al., 2000b is the consensus based midrange effect concentration (MEC) value of 400 ng/g

Guideline Reference:

Development and evaluation of consensus-based sediment effect concentrations for polychlorinated biphenyls. Environmental Toxicology and Chemistry. 19(5): 1403-1413

Spatial Representation:

Data were collected from 1 station(s). Station Code(s): 410CHN002 (Channel Islands Harbor CI2).

Temporal Representation:

Data for this waterbody were collected over the date range 2017-05-24 to 2017-05-24

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 135696, PCBs (Polychlorinated biphenyls)	Region 4
Channel Islands Harbor

LOE ID:

250464

Pollutant:

PCBs (Polychlorinated biphenyls)

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The value used in this assessment comes from MacDonald et al., 2000b is the consensus based midrange effect concentration (MEC) value of 400 ng/g

Guideline Reference:

Development and evaluation of consensus-based sediment effect concentrations for polychlorinated biphenyls. Environmental Toxicology and Chemistry. 19(5): 1403-1413

Spatial Representation:

Data were collected from 1 station(s). Station Code(s): 410CHN004 (Channel Islands Harbor CI4).

Temporal Representation:

Data for this waterbody were collected over the date range 2017-05-24 to 2017-05-24

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 135696, PCBs (Polychlorinated biphenyls)	Region 4
Channel Islands Harbor

LOE ID:

250577

Pollutant:

PCBs (Polychlorinated biphenyls)

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The value used in this assessment comes from MacDonald et al., 2000b is the consensus based midrange effect concentration (MEC) value of 400 ng/g

Guideline Reference:

Development and evaluation of consensus-based sediment effect concentrations for polychlorinated biphenyls. Environmental Toxicology and Chemistry. 19(5): 1403-1413

Spatial Representation:

Data were collected from 1 station(s). Station Code(s): 410CHN005 (Channel Islands Harbor CI5).

Temporal Representation:

Data for this waterbody were collected over the date range 2017-05-24 to 2017-05-24

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 135696, PCBs (Polychlorinated biphenyls)	Region 4
Channel Islands Harbor

LOE ID:

250365

Pollutant:

PCBs (Polychlorinated biphenyls)

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The value used in this assessment comes from MacDonald et al., 2000b is the consensus based midrange effect concentration (MEC) value of 400 ng/g

Guideline Reference:

Development and evaluation of consensus-based sediment effect concentrations for polychlorinated biphenyls. Environmental Toxicology and Chemistry. 19(5): 1403-1413

Spatial Representation:

Data were collected from 1 station(s). Station Code(s): 410CHN003 (Channel Islands Harbor CI3).

Temporal Representation:

Data for this waterbody were collected over the date range 2017-05-24 to 2017-05-24

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 135696, PCBs (Polychlorinated biphenyls)	Region 4
Channel Islands Harbor

LOE ID:

82797

Pollutant:

PCBs (Polychlorinated biphenyls)

LOE Subgroup:

Pollutant-Tissue

Matrix:

Tissue

Fraction:

Shellfish

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

Shellfish surveys

Data Used to Assess Water Quality:

The one sample did exceed the guideline. PCB congeners were summed for the assessment.

Data Reference:

RWB4 Miscellaneous Ventura Coastal 2006

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The modified OEHHA Fish Contaminant Goal for polychlorinated biphenyls in shellfish tissue is 3.9 ppb. This screening level assumes an average body weight of 70 kg and a consumption rate of 21 g/day for a 30 year exposure over a 70-year lifetime. This constituent is a carcinogen therefore the risk level is set to one in a million. (Brodberg, R.K., and G.A. Pollock, 1999; Klasing, S., and R. Brodberg, 2008)

Guideline Reference:

Prevalence of Selected Target Chemical Contaminants in Sport Fish From Two California Lakes: Public health designed screening study. Sacramento, CA: Office of Environmental Health Hazard Assessment

Guideline Reference:

Development of Fish Contaminant Goals and Advisory Tissue Levels for Common Contaminants in California Sport Fish: Chlordane, DDTs, Dieldrin, Methylmercury, PCBs, Selenium, and Toxaphene

Spatial Representation:

Data was collected at one station: Channel Islands Harbor 5 - 410VHCHN5.

Temporal Representation:

Data was collected on a single day 2/28/2007.

Environmental Conditions:

QAPP Information:

Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002

QAPP Information Reference(s):

Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version)

Line of Evidence (LOE) for Decision ID 135696, PCBs (Polychlorinated biphenyls)	Region 4
Channel Islands Harbor

LOE ID:

83601

Pollutant:

PCBs (Polychlorinated biphenyls)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

State Water Board staff assessed SWAMP data for Channel Islands Harbor to determine beneficial use support and results are as follows: 0 of 0 samples exceed the criterion for PCB, Total. One sample result(s) were not used in the assessment because the laboratory data reporting limit(s) was above the objective and therefore the results could not be quantified with the level of certainty required by the Listing Policy.

Data Reference:

RWB4 Miscellaneous Ventura Coastal 2006

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

The PCB, total Congeners criteria for the protection of human health from consumption of organisms only is 0.00017 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Data for this line of evidence for Channel Islands Harbor was collected at 1 monitoring site [ Channel Islands Harbor 5 - 410VHCHN5]

Temporal Representation:

Data was collected on a single day 10/12/2006.

Environmental Conditions:

Staff is not aware of any special conditions that might affect interpretation of the data.

QAPP Information:

The SWAMP QAPP (2008) was followed.

QAPP Information Reference(s):

Surface Water Ambient Monitoring Program Quality Assurance Program Plan

Line of Evidence (LOE) for Decision ID 135696, PCBs (Polychlorinated biphenyls)	Region 4
Channel Islands Harbor

LOE ID:

83600

Pollutant:

PCBs (Polychlorinated biphenyls)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

State Water Board staff assessed SWAMP data for Channel Islands Harbor to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for PCB, Total.

Data Reference:

RWB4 Miscellaneous Ventura Coastal 2006

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

The PCB, total Congeners criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.03 ug/L. This value corresponds to the sum of aroclors 1242, 1254, 1221, 1232, 1248, 1260, and 1016 (California Toxics Rule, 2000).

Objective/Criterion Reference:

Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Data for this line of evidence for Channel Islands Harbor was collected at 1 monitoring site [ Channel Islands Harbor 5 - 410VHCHN5]

Temporal Representation:

Data was collected on a single day 10/12/2006.

Environmental Conditions:

Staff is not aware of any special conditions that might affect interpretation of the data.

QAPP Information:

The SWAMP QAPP (2008) was followed.

QAPP Information Reference(s):

Surface Water Ambient Monitoring Program Quality Assurance Program Plan

Line of Evidence (LOE) for Decision ID 135696, PCBs (Polychlorinated biphenyls)	Region 4
Channel Islands Harbor

LOE ID:

83602

Pollutant:

PCBs (Polychlorinated biphenyls)

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Zero of 5 samples collected for Total PCBs measured as the sum of arochlors 1248, 1254, and 1260, exceeded the evaluation guideline.

Data Reference:

RWB4 Miscellaneous Ventura Coastal 2006

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Waters shall not contain substances in concentrations that result in the deposition of material that causes nuisance or adversely affects beneficial uses (Water Quality Control Plan for the Los Angeles Region).

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

In saline sediments the probable effect concentration (predictive of sediment toxicity) for sum of PCB Arochlors is 400 ng/g dry weight (MacDonald et al. 2000).

Guideline Reference:

Development and evaluation of consensus-based sediment effect concentrations for polychlorinated biphenyls. Environmental Toxicology and Chemistry. 19(5): 1403-1413

Spatial Representation:

Temporal Representation:

The samples were collected on 10/11/2006.

Environmental Conditions:

QAPP Information:

The SWAMP QAPP (2006) was followed.

QAPP Information Reference(s):

Surface Water Ambient Monitoring Program Quality Assurance Program Plan

Line of Evidence (LOE) for Decision ID 135696, PCBs (Polychlorinated biphenyls)	Region 4
Channel Islands Harbor

LOE ID:

83603

Pollutant:

PCBs (Polychlorinated biphenyls)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

The method detection limit for all of the non-detect samples was greater than the criteria: thus the data was not used in this assessment.

Data Reference:

RWB4 Miscellaneous Ventura Coastal 2006

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

The total PCB criterion for the protection of human health from the consumption of water and organisms is 0.00017 ug/L. This value corresponds to total PCBs, eg., the sum of all congener or isomer or homolog or aroclor analyses (California Toxics Rule, 2000).

Objective/Criterion Reference:

Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Samples are collected by hand from three sub-locations (A,B,C) from site 410VHCHN5. The three samples per site were averaged prior to assessment.

Temporal Representation:

Samples were collected on 10/12/2006.

Environmental Conditions:

QAPP Information:

SWAMP QAPP (2006) was followed.

QAPP Information Reference(s):

Surface Water Ambient Monitoring Program Quality Assurance Program Plan

Line of Evidence (LOE) for Decision ID 135696, PCBs (Polychlorinated biphenyls)	Region 4
Channel Islands Harbor

LOE ID:

250193

Pollutant:

PCBs (Polychlorinated biphenyls)

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The value used in this assessment comes from MacDonald et al., 2000b is the consensus based midrange effect concentration (MEC) value of 400 ng/g

Guideline Reference:

Development and evaluation of consensus-based sediment effect concentrations for polychlorinated biphenyls. Environmental Toxicology and Chemistry. 19(5): 1403-1413

Spatial Representation:

Data were collected from 1 station(s). Station Code(s): 410CHN001 (Channel Islands Harbor CI1).

Temporal Representation:

Data for this waterbody were collected over the date range 2017-05-24 to 2017-05-24

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 135696, PCBs (Polychlorinated biphenyls)	Region 4
Channel Islands Harbor

LOE ID:

250417

Pollutant:

PCBs (Polychlorinated biphenyls)

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The value used in this assessment comes from MacDonald et al., 2000b is the consensus based midrange effect concentration (MEC) value of 400 ng/g

Guideline Reference:

Development and evaluation of consensus-based sediment effect concentrations for polychlorinated biphenyls. Environmental Toxicology and Chemistry. 19(5): 1403-1413

Spatial Representation:

Data were collected from 1 station(s). Station Code(s): B18-10046 (B18-10046).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-08-15 to 2018-08-15

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 135696, PCBs (Polychlorinated biphenyls)	Region 4
Channel Islands Harbor

LOE ID:

264438

Pollutant:

PCBs (Polychlorinated biphenyls)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for PCBs (Polychlorinated biphenyls). Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-31 (Oxn_CI-31_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135696, PCBs (Polychlorinated biphenyls)	Region 4
Channel Islands Harbor

LOE ID:

264519

Pollutant:

PCBs (Polychlorinated biphenyls)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for PCBs (Polychlorinated biphenyls). Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-15 (Oxn_CI-15_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135696, PCBs (Polychlorinated biphenyls)	Region 4
Channel Islands Harbor

LOE ID:

264604

Pollutant:

PCBs (Polychlorinated biphenyls)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for PCBs (Polychlorinated biphenyls). Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-11 (Oxn_CI-11_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY


DECISION ID	135692	Region 4
Channel Islands Harbor

Pollutant:	Pentachlorophenol (PCP)
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.

Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.

Line of Evidence (LOE) for Decision ID 135692, Pentachlorophenol (PCP)	Region 4
Channel Islands Harbor

LOE ID:

264628

Pollutant:

Pentachlorophenol (PCP)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The pentachlorophenol criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 7.9 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-17 (Oxn_CI-17_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2019-12-04 and 2019-12-04

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135692, Pentachlorophenol (PCP)	Region 4
Channel Islands Harbor

LOE ID:

264647

Pollutant:

Pentachlorophenol (PCP)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The pentachlorophenol criterion for the protection of human health from consumption of organisms only is 8.2 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-17 (Oxn_CI-17_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2019-12-04 and 2019-12-04

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY


DECISION ID	135694	Region 4
Channel Islands Harbor

Pollutant:	Phenanthrene
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)(2018)
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.

Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.

Line of Evidence (LOE) for Decision ID 135694, Phenanthrene	Region 4
Channel Islands Harbor

LOE ID:

83607

Pollutant:

Phenanthrene

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Boardstaff assessed SWAMP data for Channel Islands Harbor to determine beneficial use support and results are as follows: 0 of 5 samples exceed the criterion for Phenanthrene.

Data Reference:

RWB4 Miscellaneous Ventura Coastal 2006

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

In marine and estuarine sediments the probable effect level (predictive of sediment toxicity for sediment-dwelling organisms) for Phenanthrene is 543.53 ng/g dry weight (MacDonald et al., 1996).

Guideline Reference:

Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278

Spatial Representation:

Temporal Representation:

Data was collected over the time period 10/11/2006-10/12/2006.

Environmental Conditions:

Staff is not aware of any special conditions that might affect interpretation of the data.

QAPP Information:

2002 QAMP (Quality Assurance Management Plan) for the State of California's Surface Water Ambient Monitoring Program

QAPP Information Reference(s):

Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version)

Line of Evidence (LOE) for Decision ID 135694, Phenanthrene	Region 4
Channel Islands Harbor

LOE ID:

250698

Pollutant:

Phenanthrene

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The evaluation guideline for phenanthrene is the probable effect level (PEL) of 544 ng/g dry weight (MacDonald et al., 1996).

Guideline Reference:

Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278

Spatial Representation:

Data were collected from 1 station(s). Station Code(s): 410CHN001 (Channel Islands Harbor CI1).

Temporal Representation:

Data for this waterbody were collected over the date range 2017-05-24 to 2017-05-24

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 135694, Phenanthrene	Region 4
Channel Islands Harbor

LOE ID:

250673

Pollutant:

Phenanthrene

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The evaluation guideline for phenanthrene is the probable effect level (PEL) of 544 ng/g dry weight (MacDonald et al., 1996).

Guideline Reference:

Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278

Spatial Representation:

Data were collected from 1 station(s). Station Code(s): 410CHN004 (Channel Islands Harbor CI4).

Temporal Representation:

Data for this waterbody were collected over the date range 2017-05-24 to 2017-05-24

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 135694, Phenanthrene	Region 4
Channel Islands Harbor

LOE ID:

250609

Pollutant:

Phenanthrene

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The evaluation guideline for phenanthrene is the probable effect level (PEL) of 544 ng/g dry weight (MacDonald et al., 1996).

Guideline Reference:

Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278

Spatial Representation:

Data were collected from 1 station(s). Station Code(s): 410CHN005 (Channel Islands Harbor CI5).

Temporal Representation:

Data for this waterbody were collected over the date range 2017-05-24 to 2017-05-24

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 135694, Phenanthrene	Region 4
Channel Islands Harbor

LOE ID:

250762

Pollutant:

Phenanthrene

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The evaluation guideline for phenanthrene is the probable effect level (PEL) of 544 ng/g dry weight (MacDonald et al., 1996).

Guideline Reference:

Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278

Spatial Representation:

Data were collected from 1 station(s). Station Code(s): 410CHN002 (Channel Islands Harbor CI2).

Temporal Representation:

Data for this waterbody were collected over the date range 2017-05-24 to 2017-05-24

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 135694, Phenanthrene	Region 4
Channel Islands Harbor

LOE ID:

250721

Pollutant:

Phenanthrene

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The evaluation guideline for phenanthrene is the probable effect level (PEL) of 544 ng/g dry weight (MacDonald et al., 1996).

Guideline Reference:

Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278

Spatial Representation:

Data were collected from 1 station(s). Station Code(s): 410CHN003 (Channel Islands Harbor CI3).

Temporal Representation:

Data for this waterbody were collected over the date range 2017-05-24 to 2017-05-24

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.


DECISION ID	135695	Region 4
Channel Islands Harbor

Pollutant:	Phenol
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.

Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.

Line of Evidence (LOE) for Decision ID 135695, Phenol	Region 4
Channel Islands Harbor

LOE ID:

265229

Pollutant:

Phenol

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The phenol criterion for the protection of human health from consumption of organisms only is 4,600,000 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-17 (Oxn_CI-17_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2019-12-04 and 2019-12-04

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY


DECISION ID	135697	Region 4
Channel Islands Harbor

Pollutant:	Pyrene
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)(2018)
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.

Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.

Line of Evidence (LOE) for Decision ID 135697, Pyrene	Region 4
Channel Islands Harbor

LOE ID:

83609

Pollutant:

Pyrene

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

State Water Board staff assessed 4 data for Channel Islands Harbor to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Pyrene.

Data Reference:

RWB4 Miscellaneous Ventura Coastal 2006

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

The Pyrene criteria for the protection of human health from consumption of organisms only is 11,000 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Data for this line of evidence for Channel Islands Harbor was collected at 1 monitoring site [ Channel Islands Harbor 5 - 410VHCHN5]

Temporal Representation:

Data was collected on a single day 10/12/2006.

Environmental Conditions:

Staff is not aware of any special conditions that might affect interpretation of the data.

QAPP Information:

The SWAMP QAPP (2008) was followed.

QAPP Information Reference(s):

Surface Water Ambient Monitoring Program Quality Assurance Program Plan

Line of Evidence (LOE) for Decision ID 135697, Pyrene	Region 4
Channel Islands Harbor

LOE ID:

83608

Pollutant:

Pyrene

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Boardstaff assessed SWAMP data for Channel Islands Harbor to determine beneficial use support and results are as follows: 0 of 5 samples exceed the criterion for Pyrene.

Data Reference:

RWB4 Miscellaneous Ventura Coastal 2006

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

In marine and estuarine sediments the probable effect level (predictive of sediment toxicity for sediment-dwelling organisms) for Pyrene is 1397.4 ng/g dry weight (MacDonald et al., 1996).

Guideline Reference:

Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278

Spatial Representation:

Temporal Representation:

Data was collected over the time period 10/11/2006-10/12/2006.

Environmental Conditions:

Staff is not aware of any special conditions that might affect interpretation of the data.

QAPP Information:

2002 QAMP (Quality Assurance Management Plan) for the State of California's Surface Water Ambient Monitoring Program

QAPP Information Reference(s):

Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version)

Line of Evidence (LOE) for Decision ID 135697, Pyrene	Region 4
Channel Islands Harbor

LOE ID:

265551

Pollutant:

Pyrene

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The pyrene criterion for the protection of human health from consumption of organisms only is 11,000 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-17 (Oxn_CI-17_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2019-12-04 and 2019-12-04

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135697, Pyrene	Region 4
Channel Islands Harbor

LOE ID:

250848

Pollutant:

Pyrene

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The evaluation guideline for pyrene is the probable effect level (PEL) of 1398 ug/kg dry weight (MacDonald et al., 1996).

Guideline Reference:

Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278

Spatial Representation:

Data were collected from 1 station(s). Station Code(s): 410CHN005 (Channel Islands Harbor CI5).

Temporal Representation:

Data for this waterbody were collected over the date range 2017-05-24 to 2017-05-24

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 135697, Pyrene	Region 4
Channel Islands Harbor

LOE ID:

251060

Pollutant:

Pyrene

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The evaluation guideline for pyrene is the probable effect level (PEL) of 1398 ug/kg dry weight (MacDonald et al., 1996).

Guideline Reference:

Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278

Spatial Representation:

Data were collected from 1 station(s). Station Code(s): 410CHN002 (Channel Islands Harbor CI2).

Temporal Representation:

Data for this waterbody were collected over the date range 2017-05-24 to 2017-05-24

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 135697, Pyrene	Region 4
Channel Islands Harbor

LOE ID:

250508

Pollutant:

Pyrene

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The evaluation guideline for pyrene is the probable effect level (PEL) of 1398 ug/kg dry weight (MacDonald et al., 1996).

Guideline Reference:

Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278

Spatial Representation:

Data were collected from 1 station(s). Station Code(s): B18-10046 (B18-10046).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-08-15 to 2018-08-15

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 135697, Pyrene	Region 4
Channel Islands Harbor

LOE ID:

250969

Pollutant:

Pyrene

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The evaluation guideline for pyrene is the probable effect level (PEL) of 1398 ug/kg dry weight (MacDonald et al., 1996).

Guideline Reference:

Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278

Spatial Representation:

Data were collected from 1 station(s). Station Code(s): 410CHN003 (Channel Islands Harbor CI3).

Temporal Representation:

Data for this waterbody were collected over the date range 2017-05-24 to 2017-05-24

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 135697, Pyrene	Region 4
Channel Islands Harbor

LOE ID:

250970

Pollutant:

Pyrene

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The evaluation guideline for pyrene is the probable effect level (PEL) of 1398 ug/kg dry weight (MacDonald et al., 1996).

Guideline Reference:

Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278

Spatial Representation:

Data were collected from 1 station(s). Station Code(s): 410CHN001 (Channel Islands Harbor CI1).

Temporal Representation:

Data for this waterbody were collected over the date range 2017-05-24 to 2017-05-24

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 135697, Pyrene	Region 4
Channel Islands Harbor

LOE ID:

251169

Pollutant:

Pyrene

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The evaluation guideline for pyrene is the probable effect level (PEL) of 1398 ug/kg dry weight (MacDonald et al., 1996).

Guideline Reference:

Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278

Spatial Representation:

Data were collected from 1 station(s). Station Code(s): 410CHN004 (Channel Islands Harbor CI4).

Temporal Representation:

Data for this waterbody were collected over the date range 2017-05-24 to 2017-05-24

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.


DECISION ID	135700	Region 4
Channel Islands Harbor

Pollutant:	Selenium
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)(2018)
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status. 5 lines of evidence are available in the administrative record to assess this pollutant. 0 of the 1 samples exceed the GUIDELINE for selenium in fish tissue. 0 of the 1 samples exceed the GUIDELINE for selenium in shellfish tissue. 0 of the 1 samples exceed the CRITERION. 0 of the 25 samples exceed the CRITERION. 0 of the 25 samples exceed the CRITERION. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the CWA section 303(d) List in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. 0 of 1 and 0 of 1 samples exceeded the GUIDELINE and 0 of 1, 0 of 25 and 0 of 25 samples exceeded the CRITERION, and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.

Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because applicable water quality standards are not being exceeded.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.

Line of Evidence (LOE) for Decision ID 135700, Selenium	Region 4
Channel Islands Harbor

LOE ID:

266158

Pollutant:

Selenium

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved selenium criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 71 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-31 (Oxn_CI-31_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135700, Selenium	Region 4
Channel Islands Harbor

LOE ID:

83610

Pollutant:

Selenium

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

State Water Board staff assessed 4 data for Channel Islands Harbor to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Selenium.

Data Reference:

RWB4 Miscellaneous Ventura Coastal 2006

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

The dissolved selenium criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.0082 mg/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Data for this line of evidence for Channel Islands Harbor was collected at 1 monitoring site [ Channel Islands Harbor 5 - 410VHCHN5]

Temporal Representation:

Data was collected on a single day 10/12/2006.

Environmental Conditions:

Staff is not aware of any special conditions that might affect interpretation of the data.

QAPP Information:

The SWAMP QAPP (2008) was followed.

QAPP Information Reference(s):

Surface Water Ambient Monitoring Program Quality Assurance Program Plan

Line of Evidence (LOE) for Decision ID 135700, Selenium	Region 4
Channel Islands Harbor

LOE ID:

265965

Pollutant:

Selenium

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: Surface water shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The Selenium criteria for the protection of human health from the consumption of organisms only is 4200 ug/L (National Recommended Water Quality Criteria 2009).

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-26 (Oxn_CI-26_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135700, Selenium	Region 4
Channel Islands Harbor

LOE ID:

266303

Pollutant:

Selenium

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The Selenium criteria for the protection of human health from the consumption of organisms only is 4200 ug/L (National Recommended Water Quality Criteria 2009).

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-07 (Oxn_CI-07_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135700, Selenium	Region 4
Channel Islands Harbor

LOE ID:

266079

Pollutant:

Selenium

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The Selenium criteria for the protection of human health from the consumption of organisms only is 4200 ug/L (National Recommended Water Quality Criteria 2009).

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-31 (Oxn_CI-31_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135700, Selenium	Region 4
Channel Islands Harbor

LOE ID:

266198

Pollutant:

Selenium

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The Selenium criteria for the protection of human health from the consumption of organisms only is 4200 ug/L (National Recommended Water Quality Criteria 2009).

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-10 (Oxn_CI-10_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135700, Selenium	Region 4
Channel Islands Harbor

LOE ID:

265981

Pollutant:

Selenium

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The Selenium criteria for the protection of human health from the consumption of organisms only is 4200 ug/L (National Recommended Water Quality Criteria 2009).

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-02 (Oxn_CI-02_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135700, Selenium	Region 4
Channel Islands Harbor

LOE ID:

265812

Pollutant:

Selenium

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The Selenium criteria for the protection of human health from the consumption of organisms only is 4200 ug/L (National Recommended Water Quality Criteria 2009).

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-20 (Oxn_CI-20_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135700, Selenium	Region 4
Channel Islands Harbor

LOE ID:

266332

Pollutant:

Selenium

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The Selenium criteria for the protection of human health from the consumption of organisms only is 4200 ug/L (National Recommended Water Quality Criteria 2009).

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-25 (Oxn_CI-25_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135700, Selenium	Region 4
Channel Islands Harbor

LOE ID:

266238

Pollutant:

Selenium

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The Selenium criteria for the protection of human health from the consumption of organisms only is 4200 ug/L (National Recommended Water Quality Criteria 2009).

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-19 (Oxn_CI-19_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135700, Selenium	Region 4
Channel Islands Harbor

LOE ID:

265919

Pollutant:

Selenium

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The Selenium criteria for the protection of human health from the consumption of organisms only is 4200 ug/L (National Recommended Water Quality Criteria 2009).

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-08 (Oxn_CI-08_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135700, Selenium	Region 4
Channel Islands Harbor

LOE ID:

266245

Pollutant:

Selenium

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The Selenium criteria for the protection of human health from the consumption of organisms only is 4200 ug/L (National Recommended Water Quality Criteria 2009).

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-21 (Oxn_CI-21_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135700, Selenium	Region 4
Channel Islands Harbor

LOE ID:

266349

Pollutant:

Selenium

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The Selenium criteria for the protection of human health from the consumption of organisms only is 4200 ug/L (National Recommended Water Quality Criteria 2009).

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-06 (Oxn_CI-06_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-09 and 2018-10-09

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135700, Selenium	Region 4
Channel Islands Harbor

LOE ID:

266353

Pollutant:

Selenium

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The Selenium criteria for the protection of human health from the consumption of organisms only is 4200 ug/L (National Recommended Water Quality Criteria 2009).

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-13 (Oxn_CI-13_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135700, Selenium	Region 4
Channel Islands Harbor

LOE ID:

265922

Pollutant:

Selenium

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The Selenium criteria for the protection of human health from the consumption of organisms only is 4200 ug/L (National Recommended Water Quality Criteria 2009).

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-18 (Oxn_CI-18_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135700, Selenium	Region 4
Channel Islands Harbor

LOE ID:

265928

Pollutant:

Selenium

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The Selenium criteria for the protection of human health from the consumption of organisms only is 4200 ug/L (National Recommended Water Quality Criteria 2009).

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-15 (Oxn_CI-15_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135700, Selenium	Region 4
Channel Islands Harbor

LOE ID:

266019

Pollutant:

Selenium

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The Selenium criteria for the protection of human health from the consumption of organisms only is 4200 ug/L (National Recommended Water Quality Criteria 2009).

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-17 (Oxn_CI-17_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135700, Selenium	Region 4
Channel Islands Harbor

LOE ID:

266255

Pollutant:

Selenium

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The Selenium criteria for the protection of human health from the consumption of organisms only is 4200 ug/L (National Recommended Water Quality Criteria 2009).

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-12 (Oxn_CI-12_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135700, Selenium	Region 4
Channel Islands Harbor

LOE ID:

265755

Pollutant:

Selenium

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The Selenium criteria for the protection of human health from the consumption of organisms only is 4200 ug/L (National Recommended Water Quality Criteria 2009).

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-11 (Oxn_CI-11_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135700, Selenium	Region 4
Channel Islands Harbor

LOE ID:

266142

Pollutant:

Selenium

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The Selenium criteria for the protection of human health from the consumption of organisms only is 4200 ug/L (National Recommended Water Quality Criteria 2009).

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-27 (Oxn_CI-27_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135700, Selenium	Region 4
Channel Islands Harbor

LOE ID:

265758

Pollutant:

Selenium

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The Selenium criteria for the protection of human health from the consumption of organisms only is 4200 ug/L (National Recommended Water Quality Criteria 2009).

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-03 (Oxn_CI-03_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135700, Selenium	Region 4
Channel Islands Harbor

LOE ID:

266157

Pollutant:

Selenium

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The Selenium criteria for the protection of human health from the consumption of organisms only is 4200 ug/L (National Recommended Water Quality Criteria 2009).

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-24 (Oxn_CI-24_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135700, Selenium	Region 4
Channel Islands Harbor

LOE ID:

266277

Pollutant:

Selenium

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The Selenium criteria for the protection of human health from the consumption of organisms only is 4200 ug/L (National Recommended Water Quality Criteria 2009).

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-14 (Oxn_CI-14_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135700, Selenium	Region 4
Channel Islands Harbor

LOE ID:

266278

Pollutant:

Selenium

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The Selenium criteria for the protection of human health from the consumption of organisms only is 4200 ug/L (National Recommended Water Quality Criteria 2009).

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-09 (Oxn_CI-09_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135700, Selenium	Region 4
Channel Islands Harbor

LOE ID:

265863

Pollutant:

Selenium

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved selenium criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 71 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-20 (Oxn_CI-20_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135700, Selenium	Region 4
Channel Islands Harbor

LOE ID:

265864

Pollutant:

Selenium

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved selenium criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 71 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-13 (Oxn_CI-13_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135700, Selenium	Region 4
Channel Islands Harbor

LOE ID:

265868

Pollutant:

Selenium

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved selenium criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 71 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-18 (Oxn_CI-18_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135700, Selenium	Region 4
Channel Islands Harbor

LOE ID:

266188

Pollutant:

Selenium

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved selenium criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 71 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-14 (Oxn_CI-14_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135700, Selenium	Region 4
Channel Islands Harbor

LOE ID:

265882

Pollutant:

Selenium

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved selenium criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 71 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-11 (Oxn_CI-11_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135700, Selenium	Region 4
Channel Islands Harbor

LOE ID:

266209

Pollutant:

Selenium

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved selenium criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 71 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-21 (Oxn_CI-21_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135700, Selenium	Region 4
Channel Islands Harbor

LOE ID:

266210

Pollutant:

Selenium

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved selenium criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 71 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-15 (Oxn_CI-15_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135700, Selenium	Region 4
Channel Islands Harbor

LOE ID:

265707

Pollutant:

Selenium

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved selenium criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 71 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-16 (Oxn_CI-16_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135700, Selenium	Region 4
Channel Islands Harbor

LOE ID:

265983

Pollutant:

Selenium

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved selenium criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 71 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-19 (Oxn_CI-19_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135700, Selenium	Region 4
Channel Islands Harbor

LOE ID:

266327

Pollutant:

Selenium

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved selenium criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 71 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-24 (Oxn_CI-24_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135700, Selenium	Region 4
Channel Islands Harbor

LOE ID:

266329

Pollutant:

Selenium

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved selenium criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 71 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-03 (Oxn_CI-03_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135700, Selenium	Region 4
Channel Islands Harbor

LOE ID:

265903

Pollutant:

Selenium

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved selenium criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 71 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-12 (Oxn_CI-12_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135700, Selenium	Region 4
Channel Islands Harbor

LOE ID:

266002

Pollutant:

Selenium

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved selenium criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 71 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-09 (Oxn_CI-09_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135700, Selenium	Region 4
Channel Islands Harbor

LOE ID:

265827

Pollutant:

Selenium

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved selenium criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 71 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-25 (Oxn_CI-25_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135700, Selenium	Region 4
Channel Islands Harbor

LOE ID:

265829

Pollutant:

Selenium

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved selenium criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 71 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-08 (Oxn_CI-08_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135700, Selenium	Region 4
Channel Islands Harbor

LOE ID:

265918

Pollutant:

Selenium

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved selenium criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 71 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-02 (Oxn_CI-02_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135700, Selenium	Region 4
Channel Islands Harbor

LOE ID:

265738

Pollutant:

Selenium

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved selenium criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 71 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-26 (Oxn_CI-26_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135700, Selenium	Region 4
Channel Islands Harbor

LOE ID:

265831

Pollutant:

Selenium

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved selenium criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 71 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-27 (Oxn_CI-27_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135700, Selenium	Region 4
Channel Islands Harbor

LOE ID:

265921

Pollutant:

Selenium

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved selenium criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 71 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-07 (Oxn_CI-07_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135700, Selenium	Region 4
Channel Islands Harbor

LOE ID:

265924

Pollutant:

Selenium

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved selenium criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 71 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-22 (Oxn_CI-22_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135700, Selenium	Region 4
Channel Islands Harbor

LOE ID:

266125

Pollutant:

Selenium

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved selenium criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 71 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-06 (Oxn_CI-06_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-09 and 2018-10-09

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135700, Selenium	Region 4
Channel Islands Harbor

LOE ID:

266252

Pollutant:

Selenium

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved selenium criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 71 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-23 (Oxn_CI-23_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135700, Selenium	Region 4
Channel Islands Harbor

LOE ID:

266263

Pollutant:

Selenium

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved selenium criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 71 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-10 (Oxn_CI-10_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135700, Selenium	Region 4
Channel Islands Harbor

LOE ID:

266030

Pollutant:

Selenium

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved selenium criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 71 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-17 (Oxn_CI-17_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135700, Selenium	Region 4
Channel Islands Harbor

LOE ID:

266285

Pollutant:

Selenium

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The Selenium criteria for the protection of human health from the consumption of organisms only is 4200 ug/L (National Recommended Water Quality Criteria 2009).

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-16 (Oxn_CI-16_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135700, Selenium	Region 4
Channel Islands Harbor

LOE ID:

266056

Pollutant:

Selenium

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The Selenium criteria for the protection of human health from the consumption of organisms only is 4200 ug/L (National Recommended Water Quality Criteria 2009).

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-22 (Oxn_CI-22_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135700, Selenium	Region 4
Channel Islands Harbor

LOE ID:

83611

Pollutant:

Selenium

LOE Subgroup:

Pollutant-Tissue

Matrix:

Tissue

Fraction:

Fish fillet

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

Fish tissue analysis

Data Used to Assess Water Quality:

Data Reference:

RWB4 Miscellaneous Ventura Coastal 2006

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The OEHHA Fish Contaminant Goal for selenium in fish tissue is 7.4 ppm. This screening level assumes an average body weight of 70 kg and a consumption rate of 32 g/day. A background dietary consumption rate of 0.114 mg/day is applied for this micronutrient. (Klasing, S., and R. Brodberg, 2008)

Guideline Reference:

Development of Fish Contaminant Goals and Advisory Tissue Levels for Common Contaminants in California Sport Fish: Chlordane, DDTs, Dieldrin, Methylmercury, PCBs, Selenium, and Toxaphene

Spatial Representation:

Samples are collected by hand from three sub-locations (A,B,C) from site 410VHCHN5. The three samples per site were averaged prior to assessment.

Temporal Representation:

Representative samples of locally abundant species were collected on February 28, 2007.

Environmental Conditions:

QAPP Information:

Samples were collected as part of the State Water Board's Surface Water Ambient Monitoring Program.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 135700, Selenium	Region 4
Channel Islands Harbor

LOE ID:

82808

Pollutant:

Selenium

LOE Subgroup:

Pollutant-Tissue

Matrix:

Tissue

Fraction:

Shellfish

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

Shellfish surveys

Data Used to Assess Water Quality:

The one sample did not exceed the guideline. Data were reported on a dry weight basis and were converted to a wet weight basis by multiplying the dry-weight concentration by a factor of 1 minus the percentage of moisture content expressed as a decimal. The three replicates were averaged prior to assessment.

Data Reference:

RWB4 Miscellaneous Ventura Coastal 2006

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The modified OEHHA Fish Contaminant Goal for selenium in shellfish tissue is 11 ppm. This screening level assumes an average body weight of 70 kg and a consumption rate of 21 g/day. A background dietary consuption rate of 0.114 mg/day is applied for this micronutrient. (Brodberg, R.K., and G.A. Pollock, 1999; Klasing, S., and R. Brodberg, 2008)

Guideline Reference:

Prevalence of Selected Target Chemical Contaminants in Sport Fish From Two California Lakes: Public health designed screening study. Sacramento, CA: Office of Environmental Health Hazard Assessment

Guideline Reference:

Development of Fish Contaminant Goals and Advisory Tissue Levels for Common Contaminants in California Sport Fish: Chlordane, DDTs, Dieldrin, Methylmercury, PCBs, Selenium, and Toxaphene

Spatial Representation:

Data was collected at one station: Channel Islands Harbor 5 - 410VHCHN5.

Temporal Representation:

Data was collected on a single day 2/28/2007.

Environmental Conditions:

QAPP Information:

Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002

QAPP Information Reference(s):

Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version)

Line of Evidence (LOE) for Decision ID 135700, Selenium	Region 4
Channel Islands Harbor

LOE ID:

266179

Pollutant:

Selenium

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The Selenium criteria for the protection of human health from the consumption of organisms only is 4200 ug/L (National Recommended Water Quality Criteria 2009).

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-23 (Oxn_CI-23_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY


DECISION ID	135701	Region 4
Channel Islands Harbor

Pollutant:	Silver
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)(2018)
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.

Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.

Line of Evidence (LOE) for Decision ID 135701, Silver	Region 4
Channel Islands Harbor

LOE ID:

266694

Pollutant:

Silver

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Silver. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The dissolved silver criterion maximum concentration (CMC) to protect aquatic life in saltwater is 1.9 ug/L. This criterion was divided by 2 in order to better represent a CMC value as specified in footnote g of Table (b)(1) of the California Toxics Rule, 2000.

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-14 (Oxn_CI-14_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135701, Silver	Region 4
Channel Islands Harbor

LOE ID:

266616

Pollutant:

Silver

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Silver. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-26 (Oxn_CI-26_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135701, Silver	Region 4
Channel Islands Harbor

LOE ID:

266617

Pollutant:

Silver

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Silver. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-11 (Oxn_CI-11_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135701, Silver	Region 4
Channel Islands Harbor

LOE ID:

266633

Pollutant:

Silver

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Silver. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-24 (Oxn_CI-24_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135701, Silver	Region 4
Channel Islands Harbor

LOE ID:

266675

Pollutant:

Silver

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Silver. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-12 (Oxn_CI-12_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135701, Silver	Region 4
Channel Islands Harbor

LOE ID:

266396

Pollutant:

Silver

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Silver. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-25 (Oxn_CI-25_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135701, Silver	Region 4
Channel Islands Harbor

LOE ID:

266493

Pollutant:

Silver

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Silver. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-15 (Oxn_CI-15_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135701, Silver	Region 4
Channel Islands Harbor

LOE ID:

266498

Pollutant:

Silver

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Silver. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-07 (Oxn_CI-07_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135701, Silver	Region 4
Channel Islands Harbor

LOE ID:

266204

Pollutant:

Silver

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Silver. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-21 (Oxn_CI-21_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135701, Silver	Region 4
Channel Islands Harbor

LOE ID:

266414

Pollutant:

Silver

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Silver. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-06 (Oxn_CI-06_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-09 to 2018-10-09

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135701, Silver	Region 4
Channel Islands Harbor

LOE ID:

266513

Pollutant:

Silver

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Silver. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-02 (Oxn_CI-02_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135701, Silver	Region 4
Channel Islands Harbor

LOE ID:

266514

Pollutant:

Silver

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Silver. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-22 (Oxn_CI-22_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135701, Silver	Region 4
Channel Islands Harbor

LOE ID:

266435

Pollutant:

Silver

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Silver. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-23 (Oxn_CI-23_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135701, Silver	Region 4
Channel Islands Harbor

LOE ID:

266550

Pollutant:

Silver

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Silver. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-16 (Oxn_CI-16_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135701, Silver	Region 4
Channel Islands Harbor

LOE ID:

266452

Pollutant:

Silver

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Silver. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-31 (Oxn_CI-31_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135701, Silver	Region 4
Channel Islands Harbor

LOE ID:

266454

Pollutant:

Silver

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Silver. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-09 (Oxn_CI-09_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135701, Silver	Region 4
Channel Islands Harbor

LOE ID:

266459

Pollutant:

Silver

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Silver. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-20 (Oxn_CI-20_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135701, Silver	Region 4
Channel Islands Harbor

LOE ID:

266460

Pollutant:

Silver

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Silver. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-08 (Oxn_CI-08_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135701, Silver	Region 4
Channel Islands Harbor

LOE ID:

266135

Pollutant:

Silver

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Silver. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-18 (Oxn_CI-18_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135701, Silver	Region 4
Channel Islands Harbor

LOE ID:

266138

Pollutant:

Silver

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Silver. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-19 (Oxn_CI-19_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135701, Silver	Region 4
Channel Islands Harbor

LOE ID:

266365

Pollutant:

Silver

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Silver. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-17 (Oxn_CI-17_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135701, Silver	Region 4
Channel Islands Harbor

LOE ID:

266139

Pollutant:

Silver

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Silver. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-10 (Oxn_CI-10_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135701, Silver	Region 4
Channel Islands Harbor

LOE ID:

266471

Pollutant:

Silver

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Silver. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-27 (Oxn_CI-27_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135701, Silver	Region 4
Channel Islands Harbor

LOE ID:

251073

Pollutant:

Silver

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The evaluation guideline for silver is the probable effect level (PEL) of 1.77 ug/g dry weight (MacDonald et al., 1996).

Guideline Reference:

Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278

Spatial Representation:

Data were collected from 1 station(s). Station Code(s): 410CHN003 (Channel Islands Harbor CI3).

Temporal Representation:

Data for this waterbody were collected over the date range 2017-05-24 to 2017-05-24

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 135701, Silver	Region 4
Channel Islands Harbor

LOE ID:

251176

Pollutant:

Silver

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The evaluation guideline for silver is the probable effect level (PEL) of 1.77 ug/g dry weight (MacDonald et al., 1996).

Guideline Reference:

Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278

Spatial Representation:

Data were collected from 1 station(s). Station Code(s): 410CHN002 (Channel Islands Harbor CI2).

Temporal Representation:

Data for this waterbody were collected over the date range 2017-05-24 to 2017-05-24

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 135701, Silver	Region 4
Channel Islands Harbor

LOE ID:

250987

Pollutant:

Silver

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The evaluation guideline for silver is the probable effect level (PEL) of 1.77 ug/g dry weight (MacDonald et al., 1996).

Guideline Reference:

Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278

Spatial Representation:

Data were collected from 1 station(s). Station Code(s): 410CHN005 (Channel Islands Harbor CI5).

Temporal Representation:

Data for this waterbody were collected over the date range 2017-05-24 to 2017-05-24

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 135701, Silver	Region 4
Channel Islands Harbor

LOE ID:

250898

Pollutant:

Silver

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The evaluation guideline for silver is the probable effect level (PEL) of 1.77 ug/g dry weight (MacDonald et al., 1996).

Guideline Reference:

Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278

Spatial Representation:

Data were collected from 1 station(s). Station Code(s): 410CHN001 (Channel Islands Harbor CI1).

Temporal Representation:

Data for this waterbody were collected over the date range 2017-05-24 to 2017-05-24

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 135701, Silver	Region 4
Channel Islands Harbor

LOE ID:

251553

Pollutant:

Silver

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The evaluation guideline for silver is the probable effect level (PEL) of 1.77 ug/g dry weight (MacDonald et al., 1996).

Guideline Reference:

Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278

Spatial Representation:

Data were collected from 1 station(s). Station Code(s): 410CHN004 (Channel Islands Harbor CI4).

Temporal Representation:

Data for this waterbody were collected over the date range 2017-05-24 to 2017-05-24

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 135701, Silver	Region 4
Channel Islands Harbor

LOE ID:

266692

Pollutant:

Silver

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Silver. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-13 (Oxn_CI-13_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135701, Silver	Region 4
Channel Islands Harbor

LOE ID:

83612

Pollutant:

Silver

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Boardstaff assessed SWAMP data for Channel Islands Harbor to determine beneficial use support and results are as follows: 0 of 5 samples exceed the criterion for Silver.

Data Reference:

RWB4 Miscellaneous Ventura Coastal 2006

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

In marine and estuarine sediments the probable effect level (predictive of sediment toxicity for sediment-dwelling organisms) for Silver is 1.77 ug/g dry weight (MacDonald et al., 1996).

Guideline Reference:

Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278

Spatial Representation:

Temporal Representation:

Data was collected over the time period 10/11/2006-10/12/2006.

Environmental Conditions:

Staff is not aware of any special conditions that might affect interpretation of the data.

QAPP Information:

2002 QAMP (Quality Assurance Management Plan) for the State of California's Surface Water Ambient Monitoring Program

QAPP Information Reference(s):

Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version)

Line of Evidence (LOE) for Decision ID 135701, Silver	Region 4
Channel Islands Harbor

LOE ID:

266596

Pollutant:

Silver

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Silver. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-03 (Oxn_CI-03_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135701, Silver	Region 4
Channel Islands Harbor

LOE ID:

251031

Pollutant:

Silver

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The evaluation guideline for silver is the probable effect level (PEL) of 1.77 ug/g dry weight (MacDonald et al., 1996).

Guideline Reference:

Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278

Spatial Representation:

Data were collected from 1 station(s). Station Code(s): B18-10046 (B18-10046).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-08-18 to 2018-08-18

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.


DECISION ID	135703	Region 4
Channel Islands Harbor

Pollutant:	Tetrachloroethylene/PCE
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.

Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.

Line of Evidence (LOE) for Decision ID 135703, Tetrachloroethylene/PCE	Region 4
Channel Islands Harbor

LOE ID:

267478

Pollutant:

Tetrachloroethylene/PCE

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The tetrachloroethylene criterion for the protection of human health from consumption of organisms only is 8.85 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-17 (Oxn_CI-17_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2019-12-04 and 2019-12-04

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY


DECISION ID	135704	Region 4
Channel Islands Harbor

Pollutant:	Thallium
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status. 1 lines of evidence are available in the administrative record to assess this pollutant. 0 of the 25 samples exceed the CRITERIA. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the CWA section 303(d) List in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. 0 of 25 samples exceed the CRITERIA and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.

Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because applicable water quality standards are not being exceeded.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.

Line of Evidence (LOE) for Decision ID 135704, Thallium	Region 4
Channel Islands Harbor

LOE ID:

267437

Pollutant:

Thallium

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The thallium criterion for the protection of human health from consumption of organisms only is 6.3 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-10 (Oxn_CI-10_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135704, Thallium	Region 4
Channel Islands Harbor

LOE ID:

267438

Pollutant:

Thallium

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The thallium criterion for the protection of human health from consumption of organisms only is 6.3 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-23 (Oxn_CI-23_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135704, Thallium	Region 4
Channel Islands Harbor

LOE ID:

267440

Pollutant:

Thallium

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The thallium criterion for the protection of human health from consumption of organisms only is 6.3 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-18 (Oxn_CI-18_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135704, Thallium	Region 4
Channel Islands Harbor

LOE ID:

267394

Pollutant:

Thallium

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The thallium criterion for the protection of human health from consumption of organisms only is 6.3 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-08 (Oxn_CI-08_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135704, Thallium	Region 4
Channel Islands Harbor

LOE ID:

267543

Pollutant:

Thallium

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The thallium criterion for the protection of human health from consumption of organisms only is 6.3 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-26 (Oxn_CI-26_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135704, Thallium	Region 4
Channel Islands Harbor

LOE ID:

267639

Pollutant:

Thallium

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The thallium criterion for the protection of human health from consumption of organisms only is 6.3 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-15 (Oxn_CI-15_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135704, Thallium	Region 4
Channel Islands Harbor

LOE ID:

267640

Pollutant:

Thallium

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The thallium criterion for the protection of human health from consumption of organisms only is 6.3 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-16 (Oxn_CI-16_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135704, Thallium	Region 4
Channel Islands Harbor

LOE ID:

267349

Pollutant:

Thallium

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The thallium criterion for the protection of human health from consumption of organisms only is 6.3 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-11 (Oxn_CI-11_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135704, Thallium	Region 4
Channel Islands Harbor

LOE ID:

267350

Pollutant:

Thallium

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The thallium criterion for the protection of human health from consumption of organisms only is 6.3 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-06 (Oxn_CI-06_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-09 and 2018-10-09

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135704, Thallium	Region 4
Channel Islands Harbor

LOE ID:

267353

Pollutant:

Thallium

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The thallium criterion for the protection of human health from consumption of organisms only is 6.3 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-25 (Oxn_CI-25_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135704, Thallium	Region 4
Channel Islands Harbor

LOE ID:

267354

Pollutant:

Thallium

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The thallium criterion for the protection of human health from consumption of organisms only is 6.3 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-03 (Oxn_CI-03_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135704, Thallium	Region 4
Channel Islands Harbor

LOE ID:

267461

Pollutant:

Thallium

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The thallium criterion for the protection of human health from consumption of organisms only is 6.3 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-27 (Oxn_CI-27_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135704, Thallium	Region 4
Channel Islands Harbor

LOE ID:

267463

Pollutant:

Thallium

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The thallium criterion for the protection of human health from consumption of organisms only is 6.3 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-07 (Oxn_CI-07_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135704, Thallium	Region 4
Channel Islands Harbor

LOE ID:

267372

Pollutant:

Thallium

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The thallium criterion for the protection of human health from consumption of organisms only is 6.3 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-31 (Oxn_CI-31_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135704, Thallium	Region 4
Channel Islands Harbor

LOE ID:

267373

Pollutant:

Thallium

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The thallium criterion for the protection of human health from consumption of organisms only is 6.3 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-14 (Oxn_CI-14_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135704, Thallium	Region 4
Channel Islands Harbor

LOE ID:

267563

Pollutant:

Thallium

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The thallium criterion for the protection of human health from consumption of organisms only is 6.3 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-20 (Oxn_CI-20_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135704, Thallium	Region 4
Channel Islands Harbor

LOE ID:

267659

Pollutant:

Thallium

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The thallium criterion for the protection of human health from consumption of organisms only is 6.3 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-12 (Oxn_CI-12_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135704, Thallium	Region 4
Channel Islands Harbor

LOE ID:

267661

Pollutant:

Thallium

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The thallium criterion for the protection of human health from consumption of organisms only is 6.3 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-22 (Oxn_CI-22_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135704, Thallium	Region 4
Channel Islands Harbor

LOE ID:

267519

Pollutant:

Thallium

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The thallium criterion for the protection of human health from consumption of organisms only is 6.3 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-09 (Oxn_CI-09_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135704, Thallium	Region 4
Channel Islands Harbor

LOE ID:

267419

Pollutant:

Thallium

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The thallium criterion for the protection of human health from consumption of organisms only is 6.3 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-21 (Oxn_CI-21_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135704, Thallium	Region 4
Channel Islands Harbor

LOE ID:

267418

Pollutant:

Thallium

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The thallium criterion for the protection of human health from consumption of organisms only is 6.3 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-02 (Oxn_CI-02_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135704, Thallium	Region 4
Channel Islands Harbor

LOE ID:

267417

Pollutant:

Thallium

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The thallium criterion for the protection of human health from consumption of organisms only is 6.3 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-24 (Oxn_CI-24_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135704, Thallium	Region 4
Channel Islands Harbor

LOE ID:

267498

Pollutant:

Thallium

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The thallium criterion for the protection of human health from consumption of organisms only is 6.3 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-19 (Oxn_CI-19_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135704, Thallium	Region 4
Channel Islands Harbor

LOE ID:

267395

Pollutant:

Thallium

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The thallium criterion for the protection of human health from consumption of organisms only is 6.3 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-17 (Oxn_CI-17_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135704, Thallium	Region 4
Channel Islands Harbor

LOE ID:

267541

Pollutant:

Thallium

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The thallium criterion for the protection of human health from consumption of organisms only is 6.3 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-13 (Oxn_CI-13_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY


DECISION ID	135705	Region 4
Channel Islands Harbor

Pollutant:	Toluene
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.

Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.

Line of Evidence (LOE) for Decision ID 135705, Toluene	Region 4
Channel Islands Harbor

LOE ID:

267443

Pollutant:

Toluene

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The toluene criterion for the protection of human health from consumption of organisms only is 200,000 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-17 (Oxn_CI-17_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2019-12-04 and 2019-12-04

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY


DECISION ID	135706	Region 4
Channel Islands Harbor

Pollutant:	Toxaphene
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.

Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.

Line of Evidence (LOE) for Decision ID 135706, Toxaphene	Region 4
Channel Islands Harbor

LOE ID:

267900

Pollutant:

Toxaphene

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Toxaphene. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The toxaphene criterion for the protection of human health from consumption of organisms only is 0.00075 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-13 (Oxn_CI-13_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135706, Toxaphene	Region 4
Channel Islands Harbor

LOE ID:

267744

Pollutant:

Toxaphene

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Toxaphene. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The toxaphene criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.0002 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-20 (Oxn_CI-20_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135706, Toxaphene	Region 4
Channel Islands Harbor

LOE ID:

267922

Pollutant:

Toxaphene

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Toxaphene. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The toxaphene criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.0002 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-18 (Oxn_CI-18_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135706, Toxaphene	Region 4
Channel Islands Harbor

LOE ID:

267923

Pollutant:

Toxaphene

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Toxaphene. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The toxaphene criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.0002 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-15 (Oxn_CI-15_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135706, Toxaphene	Region 4
Channel Islands Harbor

LOE ID:

267745

Pollutant:

Toxaphene

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Toxaphene. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The toxaphene criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.0002 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-31 (Oxn_CI-31_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135706, Toxaphene	Region 4
Channel Islands Harbor

LOE ID:

267747

Pollutant:

Toxaphene

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Toxaphene. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The toxaphene criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.0002 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-26 (Oxn_CI-26_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135706, Toxaphene	Region 4
Channel Islands Harbor

LOE ID:

267749

Pollutant:

Toxaphene

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Toxaphene. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The toxaphene criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.0002 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-24 (Oxn_CI-24_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135706, Toxaphene	Region 4
Channel Islands Harbor

LOE ID:

267666

Pollutant:

Toxaphene

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Toxaphene. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The toxaphene criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.0002 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-06 (Oxn_CI-06_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135706, Toxaphene	Region 4
Channel Islands Harbor

LOE ID:

267670

Pollutant:

Toxaphene

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Toxaphene. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The toxaphene criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.0002 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-02 (Oxn_CI-02_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-11-29

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135706, Toxaphene	Region 4
Channel Islands Harbor

LOE ID:

267671

Pollutant:

Toxaphene

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Toxaphene. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The toxaphene criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.0002 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-09 (Oxn_CI-09_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135706, Toxaphene	Region 4
Channel Islands Harbor

LOE ID:

267761

Pollutant:

Toxaphene

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Toxaphene. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The toxaphene criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.0002 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-03 (Oxn_CI-03_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135706, Toxaphene	Region 4
Channel Islands Harbor

LOE ID:

267940

Pollutant:

Toxaphene

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Toxaphene. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The toxaphene criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.0002 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-07 (Oxn_CI-07_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135706, Toxaphene	Region 4
Channel Islands Harbor

LOE ID:

267765

Pollutant:

Toxaphene

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Toxaphene. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The toxaphene criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.0002 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-12 (Oxn_CI-12_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135706, Toxaphene	Region 4
Channel Islands Harbor

LOE ID:

267864

Pollutant:

Toxaphene

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Toxaphene. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The toxaphene criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.0002 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-25 (Oxn_CI-25_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135706, Toxaphene	Region 4
Channel Islands Harbor

LOE ID:

267688

Pollutant:

Toxaphene

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Toxaphene. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The toxaphene criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.0002 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-08 (Oxn_CI-08_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135706, Toxaphene	Region 4
Channel Islands Harbor

LOE ID:

267866

Pollutant:

Toxaphene

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Toxaphene. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The toxaphene criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.0002 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-14 (Oxn_CI-14_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135706, Toxaphene	Region 4
Channel Islands Harbor

LOE ID:

267962

Pollutant:

Toxaphene

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Toxaphene. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The toxaphene criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.0002 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-21 (Oxn_CI-21_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135706, Toxaphene	Region 4
Channel Islands Harbor

LOE ID:

267782

Pollutant:

Toxaphene

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Toxaphene. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The toxaphene criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.0002 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-19 (Oxn_CI-19_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135706, Toxaphene	Region 4
Channel Islands Harbor

LOE ID:

267783

Pollutant:

Toxaphene

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Toxaphene. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The toxaphene criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.0002 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-11 (Oxn_CI-11_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135706, Toxaphene	Region 4
Channel Islands Harbor

LOE ID:

267695

Pollutant:

Toxaphene

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Toxaphene. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The toxaphene criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.0002 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-10 (Oxn_CI-10_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135706, Toxaphene	Region 4
Channel Islands Harbor

LOE ID:

267880

Pollutant:

Toxaphene

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Toxaphene. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The toxaphene criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.0002 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-17 (Oxn_CI-17_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2019-12-04

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135706, Toxaphene	Region 4
Channel Islands Harbor

LOE ID:

267704

Pollutant:

Toxaphene

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Toxaphene. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The toxaphene criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.0002 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-22 (Oxn_CI-22_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135706, Toxaphene	Region 4
Channel Islands Harbor

LOE ID:

267712

Pollutant:

Toxaphene

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Toxaphene. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The toxaphene criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.0002 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-13 (Oxn_CI-13_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135706, Toxaphene	Region 4
Channel Islands Harbor

LOE ID:

267722

Pollutant:

Toxaphene

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Toxaphene. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The toxaphene criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.0002 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-16 (Oxn_CI-16_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135706, Toxaphene	Region 4
Channel Islands Harbor

LOE ID:

267827

Pollutant:

Toxaphene

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Toxaphene. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The toxaphene criterion for the protection of human health from consumption of organisms only is 0.00075 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-11 (Oxn_CI-11_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135706, Toxaphene	Region 4
Channel Islands Harbor

LOE ID:

267723

Pollutant:

Toxaphene

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Toxaphene. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The toxaphene criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.0002 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-27 (Oxn_CI-27_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135706, Toxaphene	Region 4
Channel Islands Harbor

LOE ID:

267823

Pollutant:

Toxaphene

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Toxaphene. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The toxaphene criterion for the protection of human health from consumption of organisms only is 0.00075 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-22 (Oxn_CI-22_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135706, Toxaphene	Region 4
Channel Islands Harbor

LOE ID:

267741

Pollutant:

Toxaphene

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Toxaphene. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The toxaphene criterion for the protection of human health from consumption of organisms only is 0.00075 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-03 (Oxn_CI-03_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135706, Toxaphene	Region 4
Channel Islands Harbor

LOE ID:

267840

Pollutant:

Toxaphene

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Toxaphene. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The toxaphene criterion for the protection of human health from consumption of organisms only is 0.00075 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-06 (Oxn_CI-06_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135706, Toxaphene	Region 4
Channel Islands Harbor

LOE ID:

267841

Pollutant:

Toxaphene

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Toxaphene. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The toxaphene criterion for the protection of human health from consumption of organisms only is 0.00075 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-02 (Oxn_CI-02_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-11-29

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135706, Toxaphene	Region 4
Channel Islands Harbor

LOE ID:

267843

Pollutant:

Toxaphene

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Toxaphene. Although a total of 3 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The toxaphene criterion for the protection of human health from consumption of organisms only is 0.00075 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-17 (Oxn_CI-17_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2019-12-04

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135706, Toxaphene	Region 4
Channel Islands Harbor

LOE ID:

267669

Pollutant:

Toxaphene

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Toxaphene. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The toxaphene criterion for the protection of human health from consumption of organisms only is 0.00075 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-14 (Oxn_CI-14_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135706, Toxaphene	Region 4
Channel Islands Harbor

LOE ID:

267764

Pollutant:

Toxaphene

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Toxaphene. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The toxaphene criterion for the protection of human health from consumption of organisms only is 0.00075 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-31 (Oxn_CI-31_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135706, Toxaphene	Region 4
Channel Islands Harbor

LOE ID:

267766

Pollutant:

Toxaphene

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Toxaphene. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The toxaphene criterion for the protection of human health from consumption of organisms only is 0.00075 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-07 (Oxn_CI-07_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135706, Toxaphene	Region 4
Channel Islands Harbor

LOE ID:

267767

Pollutant:

Toxaphene

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Toxaphene. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The toxaphene criterion for the protection of human health from consumption of organisms only is 0.00075 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-26 (Oxn_CI-26_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135706, Toxaphene	Region 4
Channel Islands Harbor

LOE ID:

267768

Pollutant:

Toxaphene

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Toxaphene. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The toxaphene criterion for the protection of human health from consumption of organisms only is 0.00075 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-09 (Oxn_CI-09_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135706, Toxaphene	Region 4
Channel Islands Harbor

LOE ID:

267858

Pollutant:

Toxaphene

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Toxaphene. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The toxaphene criterion for the protection of human health from consumption of organisms only is 0.00075 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-18 (Oxn_CI-18_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135706, Toxaphene	Region 4
Channel Islands Harbor

LOE ID:

267865

Pollutant:

Toxaphene

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Toxaphene. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The toxaphene criterion for the protection of human health from consumption of organisms only is 0.00075 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-25 (Oxn_CI-25_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135706, Toxaphene	Region 4
Channel Islands Harbor

LOE ID:

267957

Pollutant:

Toxaphene

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Toxaphene. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The toxaphene criterion for the protection of human health from consumption of organisms only is 0.00075 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-24 (Oxn_CI-24_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135706, Toxaphene	Region 4
Channel Islands Harbor

LOE ID:

267685

Pollutant:

Toxaphene

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Toxaphene. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The toxaphene criterion for the protection of human health from consumption of organisms only is 0.00075 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-08 (Oxn_CI-08_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135706, Toxaphene	Region 4
Channel Islands Harbor

LOE ID:

267687

Pollutant:

Toxaphene

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Toxaphene. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The toxaphene criterion for the protection of human health from consumption of organisms only is 0.00075 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-21 (Oxn_CI-21_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135706, Toxaphene	Region 4
Channel Islands Harbor

LOE ID:

267958

Pollutant:

Toxaphene

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Toxaphene. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The toxaphene criterion for the protection of human health from consumption of organisms only is 0.00075 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-19 (Oxn_CI-19_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135706, Toxaphene	Region 4
Channel Islands Harbor

LOE ID:

267960

Pollutant:

Toxaphene

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Toxaphene. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The toxaphene criterion for the protection of human health from consumption of organisms only is 0.00075 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-15 (Oxn_CI-15_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135706, Toxaphene	Region 4
Channel Islands Harbor

LOE ID:

267878

Pollutant:

Toxaphene

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Toxaphene. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The toxaphene criterion for the protection of human health from consumption of organisms only is 0.00075 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-16 (Oxn_CI-16_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135706, Toxaphene	Region 4
Channel Islands Harbor

LOE ID:

267883

Pollutant:

Toxaphene

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Toxaphene. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The toxaphene criterion for the protection of human health from consumption of organisms only is 0.00075 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-12 (Oxn_CI-12_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135706, Toxaphene	Region 4
Channel Islands Harbor

LOE ID:

267706

Pollutant:

Toxaphene

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Toxaphene. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The toxaphene criterion for the protection of human health from consumption of organisms only is 0.00075 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-27 (Oxn_CI-27_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135706, Toxaphene	Region 4
Channel Islands Harbor

LOE ID:

267708

Pollutant:

Toxaphene

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Toxaphene. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The toxaphene criterion for the protection of human health from consumption of organisms only is 0.00075 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-20 (Oxn_CI-20_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135706, Toxaphene	Region 4
Channel Islands Harbor

LOE ID:

267800

Pollutant:

Toxaphene

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Toxaphene. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The toxaphene criterion for the protection of human health from consumption of organisms only is 0.00075 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-23 (Oxn_CI-23_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135706, Toxaphene	Region 4
Channel Islands Harbor

LOE ID:

267821

Pollutant:

Toxaphene

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Toxaphene. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The toxaphene criterion for the protection of human health from consumption of organisms only is 0.00075 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-10 (Oxn_CI-10_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135706, Toxaphene	Region 4
Channel Islands Harbor

LOE ID:

267819

Pollutant:

Toxaphene

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Toxaphene. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The toxaphene criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saline water is 0.0002 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-23 (Oxn_CI-23_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY


DECISION ID	135708	Region 4
Channel Islands Harbor

Pollutant:	Trichloroethylene/TCE
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.

Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.

Line of Evidence (LOE) for Decision ID 135708, Trichloroethylene/TCE	Region 4
Channel Islands Harbor

LOE ID:

267733

Pollutant:

Trichloroethylene/TCE

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The trichloroethylene criterion for the protection of human health from consumption of organisms only is 81 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-17 (Oxn_CI-17_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2019-12-04 and 2019-12-04

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY


DECISION ID	135675	Region 4
Channel Islands Harbor

Pollutant:	Trichlorophenol, 2,4,5-
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.

Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.

Line of Evidence (LOE) for Decision ID 135675, Trichlorophenol, 2,4,5-	Region 4
Channel Islands Harbor

LOE ID:

267734

Pollutant:

Trichlorophenol, 2,4,5-

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The USEPA recommended criterion for 2, 4, 5-trichlorophenol for the protection of human health from the consumption of organisms only is 600 ug/L

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-17 (Oxn_CI-17_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2019-12-04 and 2019-12-04

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY


DECISION ID	135710	Region 4
Channel Islands Harbor

Pollutant:	Vinyl chloride
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.

Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.

Line of Evidence (LOE) for Decision ID 135710, Vinyl chloride	Region 4
Channel Islands Harbor

LOE ID:

267984

Pollutant:

Vinyl chloride

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The vinyl chloride criterion for the protection of human health from consumption of organisms only is 525 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-17 (Oxn_CI-17_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2019-12-04 and 2019-12-04

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY


DECISION ID	135643	Region 4
Channel Islands Harbor

Pollutant:	alpha-Endosulfan (Endosulfan 1)
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)(2018)
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the CWA section 303(d) List in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. 0 of 1, 0 of 1, 0 of 4 and 0 of 28 samples exceeded the CRITERIA and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.

Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because applicable water quality standards are not being exceeded.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.

Line of Evidence (LOE) for Decision ID 135643, alpha-Endosulfan (Endosulfan 1)	Region 4
Channel Islands Harbor

LOE ID:

83615

Pollutant:

alpha-Endosulfan (Endosulfan 1)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

State Water Board staff assessed 4 data for Channel Islands Harbor to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Endosulfan I.

Data Reference:

RWB4 Miscellaneous Ventura Coastal 2006

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

The Endosulfan I criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater for alpha-endosulfan is 0.056 ug/L.

Objective/Criterion Reference:

Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Data for this line of evidence for Channel Islands Harbor was collected at 1 monitoring site [ Channel Islands Harbor 5 - 410VHCHN5]

Temporal Representation:

Data was collected on a single day 10/12/2006.

Environmental Conditions:

Staff is not aware of any special conditions that might affect interpretation of the data.

QAPP Information:

The SWAMP QAPP (2008) was followed.

QAPP Information Reference(s):

Surface Water Ambient Monitoring Program Quality Assurance Program Plan

Line of Evidence (LOE) for Decision ID 135643, alpha-Endosulfan (Endosulfan 1)	Region 4
Channel Islands Harbor

LOE ID:

83614

Pollutant:

alpha-Endosulfan (Endosulfan 1)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

State Water Board staff assessed 4 data for Channel Islands Harbor to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Endosulfan I.

Data Reference:

RWB4 Miscellaneous Ventura Coastal 2006

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

The Endosulfan I criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater for alpha-endosulfan is 0.056 ug/L.

Objective/Criterion Reference:

Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Data for this line of evidence for Channel Islands Harbor was collected at 1 monitoring site [ Channel Islands Harbor 5 - 410VHCHN5]

Temporal Representation:

Data was collected on a single day 10/12/2006.

Environmental Conditions:

Staff is not aware of any special conditions that might affect interpretation of the data.

QAPP Information:

The SWAMP QAPP (2008) was followed.

QAPP Information Reference(s):

Surface Water Ambient Monitoring Program Quality Assurance Program Plan

Line of Evidence (LOE) for Decision ID 135643, alpha-Endosulfan (Endosulfan 1)	Region 4
Channel Islands Harbor

LOE ID:

260939

Pollutant:

alpha-Endosulfan (Endosulfan 1)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for Endosulfan I. Although a total of 3 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endosulfan I (alpha-endosulfan) criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saltwater is 0.0087 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (Oxn_CI-02).

Temporal Representation:

Data for this waterbody was collected over the date range 2018-10-08 to 2018-11-29

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135643, alpha-Endosulfan (Endosulfan 1)	Region 4
Channel Islands Harbor

LOE ID:

260762

Pollutant:

alpha-Endosulfan (Endosulfan 1)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endosulfan I (alpha-endosulfan) criterion for the protection human health from the consumption of organisms only is 240 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-31 (Oxn_CI-31_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-10 and 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135643, alpha-Endosulfan (Endosulfan 1)	Region 4
Channel Islands Harbor

LOE ID:

260766

Pollutant:

alpha-Endosulfan (Endosulfan 1)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endosulfan I (alpha-endosulfan) criterion for the protection human health from the consumption of organisms only is 240 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-22 (Oxn_CI-22_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-10 and 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135643, alpha-Endosulfan (Endosulfan 1)	Region 4
Channel Islands Harbor

LOE ID:

260874

Pollutant:

alpha-Endosulfan (Endosulfan 1)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endosulfan I (alpha-endosulfan) criterion for the protection human health from the consumption of organisms only is 240 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-21 (Oxn_CI-21_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-10 and 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135643, alpha-Endosulfan (Endosulfan 1)	Region 4
Channel Islands Harbor

LOE ID:

260877

Pollutant:

alpha-Endosulfan (Endosulfan 1)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endosulfan I (alpha-endosulfan) criterion for the protection human health from the consumption of organisms only is 240 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-07 (Oxn_CI-07_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135643, alpha-Endosulfan (Endosulfan 1)	Region 4
Channel Islands Harbor

LOE ID:

260878

Pollutant:

alpha-Endosulfan (Endosulfan 1)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endosulfan I (alpha-endosulfan) criterion for the protection human health from the consumption of organisms only is 240 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-16 (Oxn_CI-16_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135643, alpha-Endosulfan (Endosulfan 1)	Region 4
Channel Islands Harbor

LOE ID:

260988

Pollutant:

alpha-Endosulfan (Endosulfan 1)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endosulfan I (alpha-endosulfan) criterion for the protection human health from the consumption of organisms only is 240 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-13 (Oxn_CI-13_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135643, alpha-Endosulfan (Endosulfan 1)	Region 4
Channel Islands Harbor

LOE ID:

260669

Pollutant:

alpha-Endosulfan (Endosulfan 1)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endosulfan I (alpha-endosulfan) criterion for the protection human health from the consumption of organisms only is 240 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-23 (Oxn_CI-23_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135643, alpha-Endosulfan (Endosulfan 1)	Region 4
Channel Islands Harbor

LOE ID:

260784

Pollutant:

alpha-Endosulfan (Endosulfan 1)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endosulfan I (alpha-endosulfan) criterion for the protection human health from the consumption of organisms only is 240 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-08 (Oxn_CI-08_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-10 and 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135643, alpha-Endosulfan (Endosulfan 1)	Region 4
Channel Islands Harbor

LOE ID:

260785

Pollutant:

alpha-Endosulfan (Endosulfan 1)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endosulfan I (alpha-endosulfan) criterion for the protection human health from the consumption of organisms only is 240 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-25 (Oxn_CI-25_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135643, alpha-Endosulfan (Endosulfan 1)	Region 4
Channel Islands Harbor

LOE ID:

260894

Pollutant:

alpha-Endosulfan (Endosulfan 1)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endosulfan I (alpha-endosulfan) criterion for the protection human health from the consumption of organisms only is 240 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-02 (Oxn_CI-02_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-11-29

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135643, alpha-Endosulfan (Endosulfan 1)	Region 4
Channel Islands Harbor

LOE ID:

260897

Pollutant:

alpha-Endosulfan (Endosulfan 1)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endosulfan I (alpha-endosulfan) criterion for the protection human health from the consumption of organisms only is 240 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-19 (Oxn_CI-19_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-10 and 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135643, alpha-Endosulfan (Endosulfan 1)	Region 4
Channel Islands Harbor

LOE ID:

260899

Pollutant:

alpha-Endosulfan (Endosulfan 1)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endosulfan I (alpha-endosulfan) criterion for the protection human health from the consumption of organisms only is 240 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-17 (Oxn_CI-17_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2019-12-04

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135643, alpha-Endosulfan (Endosulfan 1)	Region 4
Channel Islands Harbor

LOE ID:

260692

Pollutant:

alpha-Endosulfan (Endosulfan 1)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endosulfan I (alpha-endosulfan) criterion for the protection human health from the consumption of organisms only is 240 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-26 (Oxn_CI-26_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-10 and 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135643, alpha-Endosulfan (Endosulfan 1)	Region 4
Channel Islands Harbor

LOE ID:

260695

Pollutant:

alpha-Endosulfan (Endosulfan 1)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endosulfan I (alpha-endosulfan) criterion for the protection human health from the consumption of organisms only is 240 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-18 (Oxn_CI-18_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135643, alpha-Endosulfan (Endosulfan 1)	Region 4
Channel Islands Harbor

LOE ID:

260696

Pollutant:

alpha-Endosulfan (Endosulfan 1)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endosulfan I (alpha-endosulfan) criterion for the protection human health from the consumption of organisms only is 240 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-15 (Oxn_CI-15_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135643, alpha-Endosulfan (Endosulfan 1)	Region 4
Channel Islands Harbor

LOE ID:

260923

Pollutant:

alpha-Endosulfan (Endosulfan 1)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endosulfan I (alpha-endosulfan) criterion for the protection human health from the consumption of organisms only is 240 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-20 (Oxn_CI-20_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135643, alpha-Endosulfan (Endosulfan 1)	Region 4
Channel Islands Harbor

LOE ID:

260715

Pollutant:

alpha-Endosulfan (Endosulfan 1)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endosulfan I (alpha-endosulfan) criterion for the protection human health from the consumption of organisms only is 240 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-03 (Oxn_CI-03_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-10 and 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135643, alpha-Endosulfan (Endosulfan 1)	Region 4
Channel Islands Harbor

LOE ID:

260719

Pollutant:

alpha-Endosulfan (Endosulfan 1)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endosulfan I (alpha-endosulfan) criterion for the protection human health from the consumption of organisms only is 240 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-14 (Oxn_CI-14_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135643, alpha-Endosulfan (Endosulfan 1)	Region 4
Channel Islands Harbor

LOE ID:

260720

Pollutant:

alpha-Endosulfan (Endosulfan 1)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endosulfan I (alpha-endosulfan) criterion for the protection human health from the consumption of organisms only is 240 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-12 (Oxn_CI-12_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-10 and 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135643, alpha-Endosulfan (Endosulfan 1)	Region 4
Channel Islands Harbor

LOE ID:

260739

Pollutant:

alpha-Endosulfan (Endosulfan 1)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endosulfan I (alpha-endosulfan) criterion for the protection human health from the consumption of organisms only is 240 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-09 (Oxn_CI-09_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-10 and 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135643, alpha-Endosulfan (Endosulfan 1)	Region 4
Channel Islands Harbor

LOE ID:

260741

Pollutant:

alpha-Endosulfan (Endosulfan 1)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endosulfan I (alpha-endosulfan) criterion for the protection human health from the consumption of organisms only is 240 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-06 (Oxn_CI-06_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-10 and 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135643, alpha-Endosulfan (Endosulfan 1)	Region 4
Channel Islands Harbor

LOE ID:

260960

Pollutant:

alpha-Endosulfan (Endosulfan 1)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endosulfan I (alpha-endosulfan) criterion for the protection human health from the consumption of organisms only is 240 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-27 (Oxn_CI-27_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135643, alpha-Endosulfan (Endosulfan 1)	Region 4
Channel Islands Harbor

LOE ID:

260853

Pollutant:

alpha-Endosulfan (Endosulfan 1)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endosulfan I (alpha-endosulfan) criterion for the protection human health from the consumption of organisms only is 240 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-11 (Oxn_CI-11_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-10 and 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135643, alpha-Endosulfan (Endosulfan 1)	Region 4
Channel Islands Harbor

LOE ID:

260965

Pollutant:

alpha-Endosulfan (Endosulfan 1)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endosulfan I (alpha-endosulfan) criterion for the protection human health from the consumption of organisms only is 240 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-10 (Oxn_CI-10_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-10 and 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135643, alpha-Endosulfan (Endosulfan 1)	Region 4
Channel Islands Harbor

LOE ID:

260969

Pollutant:

alpha-Endosulfan (Endosulfan 1)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endosulfan I (alpha-endosulfan) criterion for the protection human health from the consumption of organisms only is 240 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-24 (Oxn_CI-24_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135643, alpha-Endosulfan (Endosulfan 1)	Region 4
Channel Islands Harbor

LOE ID:

260809

Pollutant:

alpha-Endosulfan (Endosulfan 1)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for Endosulfan I. Although a total of 4 samples were collected, 2 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endosulfan I (alpha-endosulfan) criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saltwater is 0.0087 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (Oxn_CI-17).

Temporal Representation:

Data for this waterbody was collected over the date range 2018-10-08 to 2019-12-04

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY


DECISION ID	135690	Region 4
Channel Islands Harbor

Pollutant:	beta-Endosulfan (Endosulfan 2)
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)(2018)
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status. 2 lines of evidence are available in the administrative record to assess this pollutant. 0 of the 29 samples exceed the COMM criteria. 0 of the 5 samples exceed the MAR criteria Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the CWA section 303(d) List in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. 0 of 29 and 0 of 5 samples exceeded the CRITERIA and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.

Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because applicable water quality standards are not being exceeded.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.

Line of Evidence (LOE) for Decision ID 135690, beta-Endosulfan (Endosulfan 2)	Region 4
Channel Islands Harbor

LOE ID:

83639

Pollutant:

beta-Endosulfan (Endosulfan 2)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

State Water Board staff assessed 4 data for Channel Islands Harbor to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Endosulfan II.

Data Reference:

RWB4 Miscellaneous Ventura Coastal 2006

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

The Endosulfan II criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater for beta-endosulfan is 0.056 ug/L.

Objective/Criterion Reference:

Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Data for this line of evidence for Channel Islands Harbor was collected at 1 monitoring site [ Channel Islands Harbor 5 - 410VHCHN5]

Temporal Representation:

Data was collected on a single day 10/12/2006.

Environmental Conditions:

Staff is not aware of any special conditions that might affect interpretation of the data.

QAPP Information:

The SWAMP QAPP (2008) was followed.

QAPP Information Reference(s):

Surface Water Ambient Monitoring Program Quality Assurance Program Plan

Line of Evidence (LOE) for Decision ID 135690, beta-Endosulfan (Endosulfan 2)	Region 4
Channel Islands Harbor

LOE ID:

260974

Pollutant:

beta-Endosulfan (Endosulfan 2)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endosulfan II (beta-endosulfan) criterion to protect human health from the consumption of organisms only is 240 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-22 (Oxn_CI-22_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-10 and 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135690, beta-Endosulfan (Endosulfan 2)	Region 4
Channel Islands Harbor

LOE ID:

260654

Pollutant:

beta-Endosulfan (Endosulfan 2)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endosulfan II (beta-endosulfan) criterion to protect human health from the consumption of organisms only is 240 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-03 (Oxn_CI-03_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-10 and 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135690, beta-Endosulfan (Endosulfan 2)	Region 4
Channel Islands Harbor

LOE ID:

260658

Pollutant:

beta-Endosulfan (Endosulfan 2)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endosulfan II (beta-endosulfan) criterion to protect human health from the consumption of organisms only is 240 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-07 (Oxn_CI-07_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135690, beta-Endosulfan (Endosulfan 2)	Region 4
Channel Islands Harbor

LOE ID:

260882

Pollutant:

beta-Endosulfan (Endosulfan 2)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endosulfan II (beta-endosulfan) criterion to protect human health from the consumption of organisms only is 240 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-21 (Oxn_CI-21_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-10 and 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135690, beta-Endosulfan (Endosulfan 2)	Region 4
Channel Islands Harbor

LOE ID:

260996

Pollutant:

beta-Endosulfan (Endosulfan 2)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endosulfan II (beta-endosulfan) criterion to protect human health from the consumption of organisms only is 240 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-16 (Oxn_CI-16_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135690, beta-Endosulfan (Endosulfan 2)	Region 4
Channel Islands Harbor

LOE ID:

260998

Pollutant:

beta-Endosulfan (Endosulfan 2)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endosulfan II (beta-endosulfan) criterion to protect human health from the consumption of organisms only is 240 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-06 (Oxn_CI-06_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-10 and 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135690, beta-Endosulfan (Endosulfan 2)	Region 4
Channel Islands Harbor

LOE ID:

260674

Pollutant:

beta-Endosulfan (Endosulfan 2)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endosulfan II (beta-endosulfan) criterion to protect human health from the consumption of organisms only is 240 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-09 (Oxn_CI-09_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-10 and 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135690, beta-Endosulfan (Endosulfan 2)	Region 4
Channel Islands Harbor

LOE ID:

260678

Pollutant:

beta-Endosulfan (Endosulfan 2)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endosulfan II (beta-endosulfan) criterion to protect human health from the consumption of organisms only is 240 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-12 (Oxn_CI-12_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-10 and 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135690, beta-Endosulfan (Endosulfan 2)	Region 4
Channel Islands Harbor

LOE ID:

260682

Pollutant:

beta-Endosulfan (Endosulfan 2)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endosulfan II (beta-endosulfan) criterion to protect human health from the consumption of organisms only is 240 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-27 (Oxn_CI-27_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135690, beta-Endosulfan (Endosulfan 2)	Region 4
Channel Islands Harbor

LOE ID:

260901

Pollutant:

beta-Endosulfan (Endosulfan 2)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endosulfan II (beta-endosulfan) criterion to protect human health from the consumption of organisms only is 240 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-11 (Oxn_CI-11_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-10 and 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135690, beta-Endosulfan (Endosulfan 2)	Region 4
Channel Islands Harbor

LOE ID:

260698

Pollutant:

beta-Endosulfan (Endosulfan 2)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endosulfan II (beta-endosulfan) criterion to protect human health from the consumption of organisms only is 240 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-23 (Oxn_CI-23_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135690, beta-Endosulfan (Endosulfan 2)	Region 4
Channel Islands Harbor

LOE ID:

260704

Pollutant:

beta-Endosulfan (Endosulfan 2)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endosulfan II (beta-endosulfan) criterion to protect human health from the consumption of organisms only is 240 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-24 (Oxn_CI-24_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135690, beta-Endosulfan (Endosulfan 2)	Region 4
Channel Islands Harbor

LOE ID:

260705

Pollutant:

beta-Endosulfan (Endosulfan 2)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endosulfan II (beta-endosulfan) criterion to protect human health from the consumption of organisms only is 240 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-17 (Oxn_CI-17_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2019-12-04

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135690, beta-Endosulfan (Endosulfan 2)	Region 4
Channel Islands Harbor

LOE ID:

260706

Pollutant:

beta-Endosulfan (Endosulfan 2)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endosulfan II (beta-endosulfan) criterion to protect human health from the consumption of organisms only is 240 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-19 (Oxn_CI-19_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-10 and 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135690, beta-Endosulfan (Endosulfan 2)	Region 4
Channel Islands Harbor

LOE ID:

260707

Pollutant:

beta-Endosulfan (Endosulfan 2)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endosulfan II (beta-endosulfan) criterion to protect human health from the consumption of organisms only is 240 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-02 (Oxn_CI-02_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-11-29

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135690, beta-Endosulfan (Endosulfan 2)	Region 4
Channel Islands Harbor

LOE ID:

260708

Pollutant:

beta-Endosulfan (Endosulfan 2)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endosulfan II (beta-endosulfan) criterion to protect human health from the consumption of organisms only is 240 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-08 (Oxn_CI-08_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-10 and 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135690, beta-Endosulfan (Endosulfan 2)	Region 4
Channel Islands Harbor

LOE ID:

260815

Pollutant:

beta-Endosulfan (Endosulfan 2)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endosulfan II (beta-endosulfan) criterion to protect human health from the consumption of organisms only is 240 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-10 (Oxn_CI-10_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-10 and 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135690, beta-Endosulfan (Endosulfan 2)	Region 4
Channel Islands Harbor

LOE ID:

260721

Pollutant:

beta-Endosulfan (Endosulfan 2)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endosulfan II (beta-endosulfan) criterion to protect human health from the consumption of organisms only is 240 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-25 (Oxn_CI-25_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135690, beta-Endosulfan (Endosulfan 2)	Region 4
Channel Islands Harbor

LOE ID:

260723

Pollutant:

beta-Endosulfan (Endosulfan 2)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endosulfan II (beta-endosulfan) criterion to protect human health from the consumption of organisms only is 240 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-31 (Oxn_CI-31_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-10 and 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135690, beta-Endosulfan (Endosulfan 2)	Region 4
Channel Islands Harbor

LOE ID:

260950

Pollutant:

beta-Endosulfan (Endosulfan 2)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endosulfan II (beta-endosulfan) criterion to protect human health from the consumption of organisms only is 240 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-20 (Oxn_CI-20_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135690, beta-Endosulfan (Endosulfan 2)	Region 4
Channel Islands Harbor

LOE ID:

260951

Pollutant:

beta-Endosulfan (Endosulfan 2)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endosulfan II (beta-endosulfan) criterion to protect human health from the consumption of organisms only is 240 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-26 (Oxn_CI-26_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-10 and 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135690, beta-Endosulfan (Endosulfan 2)	Region 4
Channel Islands Harbor

LOE ID:

260952

Pollutant:

beta-Endosulfan (Endosulfan 2)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endosulfan II (beta-endosulfan) criterion to protect human health from the consumption of organisms only is 240 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-18 (Oxn_CI-18_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135690, beta-Endosulfan (Endosulfan 2)	Region 4
Channel Islands Harbor

LOE ID:

260750

Pollutant:

beta-Endosulfan (Endosulfan 2)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endosulfan II (beta-endosulfan) criterion to protect human health from the consumption of organisms only is 240 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-15 (Oxn_CI-15_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135690, beta-Endosulfan (Endosulfan 2)	Region 4
Channel Islands Harbor

LOE ID:

260751

Pollutant:

beta-Endosulfan (Endosulfan 2)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endosulfan II (beta-endosulfan) criterion to protect human health from the consumption of organisms only is 240 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-14 (Oxn_CI-14_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135690, beta-Endosulfan (Endosulfan 2)	Region 4
Channel Islands Harbor

LOE ID:

260857

Pollutant:

beta-Endosulfan (Endosulfan 2)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endosulfan II (beta-endosulfan) criterion to protect human health from the consumption of organisms only is 240 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-13 (Oxn_CI-13_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135690, beta-Endosulfan (Endosulfan 2)	Region 4
Channel Islands Harbor

LOE ID:

260684

Pollutant:

beta-Endosulfan (Endosulfan 2)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for Endosulfan II. Although a total of 4 samples were collected, 2 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endosulfan II (beta-endosulfan) criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saltwater is 0.0087 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (Oxn_CI-17).

Temporal Representation:

Data for this waterbody was collected over the date range 2018-10-08 to 2019-12-04

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135690, beta-Endosulfan (Endosulfan 2)	Region 4
Channel Islands Harbor

LOE ID:

260949

Pollutant:

beta-Endosulfan (Endosulfan 2)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support and the results are as follows: 0 of the 2 samples exceeded the water quality threshold for Endosulfan II. Although a total of 3 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The endosulfan II (beta-endosulfan) criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saltwater is 0.0087 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site (Oxn_CI-02).

Temporal Representation:

Data for this waterbody was collected over the date range 2018-10-08 to 2018-11-29

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135690, beta-Endosulfan (Endosulfan 2)	Region 4
Channel Islands Harbor

LOE ID:

83638

Pollutant:

beta-Endosulfan (Endosulfan 2)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

State Water Board staff assessed 4 data for Channel Islands Harbor to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Endosulfan II.

Data Reference:

RWB4 Miscellaneous Ventura Coastal 2006

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

The Endosulfan II criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater for beta-endosulfan is 0.056 ug/L.

Objective/Criterion Reference:

Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Data for this line of evidence for Channel Islands Harbor was collected at 1 monitoring site [ Channel Islands Harbor 5 - 410VHCHN5]

Temporal Representation:

Data was collected on a single day 10/12/2006.

Environmental Conditions:

Staff is not aware of any special conditions that might affect interpretation of the data.

QAPP Information:

The SWAMP QAPP (2008) was followed.

QAPP Information Reference(s):

Surface Water Ambient Monitoring Program Quality Assurance Program Plan


DECISION ID	135687	Region 4
Channel Islands Harbor

Pollutant:	o-Dichlorobenzene
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.

Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.

Line of Evidence (LOE) for Decision ID 135687, o-Dichlorobenzene	Region 4
Channel Islands Harbor

LOE ID:

260496

Pollutant:

o-Dichlorobenzene

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The 1, 2-dichlorobenzene criterion for the protection of human health from consumption of organisms only is 17,000 ug/L (California Toxics Rule, 2000).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-17 (Oxn_CI-17_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2019-12-04 and 2019-12-04

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY


DECISION ID	135693	Region 4
Channel Islands Harbor

Pollutant:	pH
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)(2018)
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	This pollutant is being considered for placement on the CWA section 303(d) List under section 3.2 of the Listing Policy. Under section 3.2 a single line of evidence are necessary to assess listing status. 3 lines of evidence are available in the administrative record to assess this pollutant. 0 of 227 samples exceeded the OBJECTIVE. 0 of 5 samples exceeded the OBJECTIVE. 0 of 5 samples exceeded the OBJECTIVE. Based on the readily available data and information, the weight of evidence indicates that there is insufficient justification for placing this water segment-pollutant combination on the CWA section 303(d) List. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. 0 of 227, 0 of 5 and 0 of 5 sample exceeded the OBJECTIVE and this does not exceed the allowable frequency listed in Table 3.2 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.

Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because applicable water quality standards are not being exceeded.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.

Line of Evidence (LOE) for Decision ID 135693, pH	Region 4
Channel Islands Harbor

LOE ID:

265288

Pollutant:

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Water Quality Control Plan, Los Angeles Basin: the pH for inland surface waters, bays, or estuaries shall not be depressed below 6.5 or raised above 8.5 as a result of waste discharges.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: 410CHN002 (Channel Islands Harbor CI2).

Temporal Representation:

The samples were collected between the dates of 2017-05-24 and 2017-05-24

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 135693, pH	Region 4
Channel Islands Harbor

LOE ID:

265168

Pollutant:

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Water Quality Control Plan, Los Angeles Basin: the pH for inland surface waters, bays, or estuaries shall not be depressed below 6.5 or raised above 8.5 as a result of waste discharges.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-15 (Oxn_CI-15_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-06-29 and 2018-11-29

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135693, pH	Region 4
Channel Islands Harbor

LOE ID:

265057

Pollutant:

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support and results are as follows: 0 of 5 samples exceeded the water quality threshold for pH.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Water Quality Control Plan, Los Angeles Basin: the pH for inland surface waters, bays, or estuaries shall not be depressed below 6.5 or raised above 8.5 as a result of waste discharges.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-02 (Oxn_CI-02_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-06-29 and 2018-11-29

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135693, pH	Region 4
Channel Islands Harbor

LOE ID:

264728

Pollutant:

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Water Quality Control Plan, Los Angeles Basin: the pH for inland surface waters, bays, or estuaries shall not be depressed below 6.5 or raised above 8.5 as a result of waste discharges.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-17 (Oxn_CI-17_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-06-29 and 2018-11-29

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135693, pH	Region 4
Channel Islands Harbor

LOE ID:

264731

Pollutant:

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Water Quality Control Plan, Los Angeles Basin: the pH for inland surface waters, bays, or estuaries shall not be depressed below 6.5 or raised above 8.5 as a result of waste discharges.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-11 (Oxn_CI-11_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-06-29 and 2018-11-29

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135693, pH	Region 4
Channel Islands Harbor

LOE ID:

264824

Pollutant:

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Water Quality Control Plan, Los Angeles Basin: the pH for inland surface waters, bays, or estuaries shall not be depressed below 6.5 or raised above 8.5 as a result of waste discharges.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: 410CHN004 (Channel Islands Harbor CI4).

Temporal Representation:

The samples were collected between the dates of 2017-05-24 and 2017-05-24

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 135693, pH	Region 4
Channel Islands Harbor

LOE ID:

264753

Pollutant:

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support and results are as follows: 0 of 15 samples exceeded the water quality threshold for pH.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Water Quality Control Plan, Los Angeles Basin: the pH for inland surface waters, bays, or estuaries shall not be depressed below 6.5 or raised above 8.5 as a result of waste discharges.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-06 (Oxn_CI-06_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-06-29 and 2019-01-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135693, pH	Region 4
Channel Islands Harbor

LOE ID:

264923

Pollutant:

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support and results are as follows: 0 of 14 samples exceeded the water quality threshold for pH.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Water Quality Control Plan, Los Angeles Basin: the pH for inland surface waters, bays, or estuaries shall not be depressed below 6.5 or raised above 8.5 as a result of waste discharges.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-26 (Oxn_CI-26_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-06-29 and 2019-01-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135693, pH	Region 4
Channel Islands Harbor

LOE ID:

264768

Pollutant:

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Water Quality Control Plan, Los Angeles Basin: the pH for inland surface waters, bays, or estuaries shall not be depressed below 6.5 or raised above 8.5 as a result of waste discharges.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-21 (Oxn_CI-21_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-06-29 and 2018-11-29

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135693, pH	Region 4
Channel Islands Harbor

LOE ID:

264772

Pollutant:

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Water Quality Control Plan, Los Angeles Basin: the pH for inland surface waters, bays, or estuaries shall not be depressed below 6.5 or raised above 8.5 as a result of waste discharges.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-07 (Oxn_CI-07_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-06-29 and 2019-01-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135693, pH	Region 4
Channel Islands Harbor

LOE ID:

264941

Pollutant:

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Water Quality Control Plan, Los Angeles Basin: the pH for inland surface waters, bays, or estuaries shall not be depressed below 6.5 or raised above 8.5 as a result of waste discharges.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-03 (Oxn_CI-03_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-06-29 and 2018-11-29

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135693, pH	Region 4
Channel Islands Harbor

LOE ID:

265212

Pollutant:

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Water Quality Control Plan, Los Angeles Basin: the pH for inland surface waters, bays, or estuaries shall not be depressed below 6.5 or raised above 8.5 as a result of waste discharges.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-14 (Oxn_CI-14_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-06-29 and 2018-11-29

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135693, pH	Region 4
Channel Islands Harbor

LOE ID:

265107

Pollutant:

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Water Quality Control Plan, Los Angeles Basin: the pH for inland surface waters, bays, or estuaries shall not be depressed below 6.5 or raised above 8.5 as a result of waste discharges.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-12 (Oxn_CI-12_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-06-29 and 2019-01-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135693, pH	Region 4
Channel Islands Harbor

LOE ID:

83606

Pollutant:

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

State Water Board staff assessed SWAMP data for Channel Islands Harbor to determine beneficial use support and results are as follows: 0 of 5 samples exceed the criterion for pH.

Data Reference:

RWB4 Miscellaneous Ventura Coastal 2006

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Water Quality Control Plan, Los Angeles Basin: the pH for insland surface waters, bays, or estuaries shall not be depressed below 6.5 or raised above 8.5 as a result of waste discharges.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Data for this line of evidence for Channel Islands Harbor was collected at 5 monitoring sites [ Channel Islands Harbor 5 - 410VHCHN5, Channel Islands Harbor 4 - 410VHCHN4, Channel Islands Harbor 1 - 410VHCHN1, Channel Islands Harbor 2 - 410VHCHN2, Channel Islands Harbor 3 - 410VHCHN3]

Temporal Representation:

Data was collected over the time period 10/11/2006-10/12/2006.

Environmental Conditions:

Staff is not aware of any special conditions that might affect interpretation of the data.

QAPP Information:

The SWAMP QAPP (2008) was followed.

QAPP Information Reference(s):

Surface Water Ambient Monitoring Program Quality Assurance Program Plan

Line of Evidence (LOE) for Decision ID 135693, pH	Region 4
Channel Islands Harbor

LOE ID:

83604

Pollutant:

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Non-Contact Recreation

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

State Water Board staff assessed SWAMP data for Channel Islands Harbor to determine beneficial use support and results are as follows: 0 of 5 samples exceed the criterion for pH.

Data Reference:

RWB4 Miscellaneous Ventura Coastal 2006

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Water Quality Control Plan, Los Angeles Basin: the pH for insland surface waters, bays, or estuaries shall not be depressed below 6.5 or raised above 8.5 as a result of waste discharges.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Temporal Representation:

Data was collected over the time period 10/11/2006-10/12/2006.

Environmental Conditions:

Staff is not aware of any special conditions that might affect interpretation of the data.

QAPP Information:

The SWAMP QAPP (2008) was followed.

QAPP Information Reference(s):

Surface Water Ambient Monitoring Program Quality Assurance Program Plan

Line of Evidence (LOE) for Decision ID 135693, pH	Region 4
Channel Islands Harbor

LOE ID:

83605

Pollutant:

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Water Contact Recreation

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

State Water Board staff assessed SWAMP data for Channel Islands Harbor to determine beneficial use support and results are as follows: 0 of 5 samples exceed the criterion for pH.

Data Reference:

RWB4 Miscellaneous Ventura Coastal 2006

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Water Quality Control Plan, Los Angeles Basin: the pH for insland surface waters, bays, or estuaries shall not be depressed below 6.5 or raised above 8.5 as a result of waste discharges.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Temporal Representation:

Data was collected over the time period 10/11/2006-10/12/2006.

Environmental Conditions:

Staff is not aware of any special conditions that might affect interpretation of the data.

QAPP Information:

The SWAMP QAPP (2008) was followed.

QAPP Information Reference(s):

Surface Water Ambient Monitoring Program Quality Assurance Program Plan

Line of Evidence (LOE) for Decision ID 135693, pH	Region 4
Channel Islands Harbor

LOE ID:

265385

Pollutant:

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Water Quality Control Plan, Los Angeles Basin: the pH for inland surface waters, bays, or estuaries shall not be depressed below 6.5 or raised above 8.5 as a result of waste discharges.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-13 (Oxn_CI-13_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-06-29 and 2018-11-29

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135693, pH	Region 4
Channel Islands Harbor

LOE ID:

265389

Pollutant:

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Water Quality Control Plan, Los Angeles Basin: the pH for inland surface waters, bays, or estuaries shall not be depressed below 6.5 or raised above 8.5 as a result of waste discharges.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-22 (Oxn_CI-22_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-06-29 and 2019-01-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135693, pH	Region 4
Channel Islands Harbor

LOE ID:

265397

Pollutant:

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Water Quality Control Plan, Los Angeles Basin: the pH for inland surface waters, bays, or estuaries shall not be depressed below 6.5 or raised above 8.5 as a result of waste discharges.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-19 (Oxn_CI-19_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-06-29 and 2018-11-29

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135693, pH	Region 4
Channel Islands Harbor

LOE ID:

265384

Pollutant:

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Water Quality Control Plan, Los Angeles Basin: the pH for inland surface waters, bays, or estuaries shall not be depressed below 6.5 or raised above 8.5 as a result of waste discharges.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-24 (Oxn_CI-24_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-06-29 and 2019-01-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135693, pH	Region 4
Channel Islands Harbor

LOE ID:

265271

Pollutant:

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Water Quality Control Plan, Los Angeles Basin: the pH for inland surface waters, bays, or estuaries shall not be depressed below 6.5 or raised above 8.5 as a result of waste discharges.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-10 (Oxn_CI-10_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-06-29 and 2018-11-29

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135693, pH	Region 4
Channel Islands Harbor

LOE ID:

265011

Pollutant:

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Water Quality Control Plan, Los Angeles Basin: the pH for inland surface waters, bays, or estuaries shall not be depressed below 6.5 or raised above 8.5 as a result of waste discharges.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-09 (Oxn_CI-09_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-06-29 and 2019-01-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135693, pH	Region 4
Channel Islands Harbor

LOE ID:

265258

Pollutant:

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Water Quality Control Plan, Los Angeles Basin: the pH for inland surface waters, bays, or estuaries shall not be depressed below 6.5 or raised above 8.5 as a result of waste discharges.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-25 (Oxn_CI-25_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-06-29 and 2018-11-29

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135693, pH	Region 4
Channel Islands Harbor

LOE ID:

265130

Pollutant:

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Water Quality Control Plan, Los Angeles Basin: the pH for inland surface waters, bays, or estuaries shall not be depressed below 6.5 or raised above 8.5 as a result of waste discharges.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: 410CHN003 (Channel Islands Harbor CI3).

Temporal Representation:

The samples were collected between the dates of 2017-05-24 and 2017-05-24

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 135693, pH	Region 4
Channel Islands Harbor

LOE ID:

265007

Pollutant:

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Water Quality Control Plan, Los Angeles Basin: the pH for inland surface waters, bays, or estuaries shall not be depressed below 6.5 or raised above 8.5 as a result of waste discharges.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: 410CHN005 (Channel Islands Harbor CI5).

Temporal Representation:

The samples were collected between the dates of 2017-05-24 and 2017-05-24

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 135693, pH	Region 4
Channel Islands Harbor

LOE ID:

265006

Pollutant:

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Water Quality Control Plan, Los Angeles Basin: the pH for inland surface waters, bays, or estuaries shall not be depressed below 6.5 or raised above 8.5 as a result of waste discharges.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: 410CHN001 (Channel Islands Harbor CI1).

Temporal Representation:

The samples were collected between the dates of 2017-05-24 and 2017-05-24

Environmental Conditions:

QAPP Information:

SWRCB. 2018. This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

QAPP Information Reference(s):

This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements.

Line of Evidence (LOE) for Decision ID 135693, pH	Region 4
Channel Islands Harbor

LOE ID:

265237

Pollutant:

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Water Quality Control Plan, Los Angeles Basin: the pH for inland surface waters, bays, or estuaries shall not be depressed below 6.5 or raised above 8.5 as a result of waste discharges.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-16 (Oxn_CI-16_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-06-29 and 2019-01-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135693, pH	Region 4
Channel Islands Harbor

LOE ID:

265113

Pollutant:

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Water Quality Control Plan, Los Angeles Basin: the pH for inland surface waters, bays, or estuaries shall not be depressed below 6.5 or raised above 8.5 as a result of waste discharges.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-20 (Oxn_CI-20_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-06-29 and 2019-01-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135693, pH	Region 4
Channel Islands Harbor

LOE ID:

265038

Pollutant:

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support and results are as follows: 0 of 13 samples exceeded the water quality threshold for pH.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Water Quality Control Plan, Los Angeles Basin: the pH for inland surface waters, bays, or estuaries shall not be depressed below 6.5 or raised above 8.5 as a result of waste discharges.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-18 (Oxn_CI-18_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-06-29 and 2019-01-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135693, pH	Region 4
Channel Islands Harbor

LOE ID:

265286

Pollutant:

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Water Quality Control Plan, Los Angeles Basin: the pH for inland surface waters, bays, or estuaries shall not be depressed below 6.5 or raised above 8.5 as a result of waste discharges.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-31 (Oxn_CI-31_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-11-29 and 2018-11-29

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135693, pH	Region 4
Channel Islands Harbor

LOE ID:

265041

Pollutant:

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Water Quality Control Plan, Los Angeles Basin: the pH for inland surface waters, bays, or estuaries shall not be depressed below 6.5 or raised above 8.5 as a result of waste discharges.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-27 (Oxn_CI-27_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-11-29 and 2018-11-29

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135693, pH	Region 4
Channel Islands Harbor

LOE ID:

265167

Pollutant:

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Water Quality Control Plan, Los Angeles Basin: the pH for inland surface waters, bays, or estuaries shall not be depressed below 6.5 or raised above 8.5 as a result of waste discharges.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-08 (Oxn_CI-08_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-06-29 and 2018-11-29

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135693, pH	Region 4
Channel Islands Harbor

LOE ID:

265295

Pollutant:

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Water Quality Control Plan, Los Angeles Basin: the pH for inland surface waters, bays, or estuaries shall not be depressed below 6.5 or raised above 8.5 as a result of waste discharges.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-23 (Oxn_CI-23_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-06-29 and 2019-01-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY


DECISION ID	135716	Region 4
Channel Islands Harbor

Pollutant:	Bifenthrin
Final Listing Decision:	List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Sources:	A Source Unknown
Expected TMDL Completion Date:	2037
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status. 1 lines of evidence are available in the administrative record to assess this pollutant. 3 of the 3 samples exceed the CRITERIA. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification in favor of placing this water segment-pollutant combination on the CWA section 303(d) List. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. 3 of the 3 samples exceed the CRITERIA and this exceeds the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.

Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should be placed on the section 303(d) list because applicable water quality standards are exceeded and a pollutant contributes to or causes the problem.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.

Line of Evidence (LOE) for Decision ID 135716, Bifenthrin	Region 4
Channel Islands Harbor

LOE ID:

258062

Pollutant:

Bifenthrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The genus mean acute value for a mysid (Mysidopsis bahia) is 0.00397 ug/L (DFG 00-6, 2000).

Guideline Reference:

Aquatic Life Criteria for Pyrethroid Insecticides (DFG Administrative Report 00-6, 2000)

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-02 (Oxn_CI-02_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-11-22 and 2018-11-22

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135716, Bifenthrin	Region 4
Channel Islands Harbor

LOE ID:

258104

Pollutant:

Bifenthrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The genus mean acute value for a mysid (Mysidopsis bahia) is 0.00397 ug/L (DFG 00-6, 2000).

Guideline Reference:

Aquatic Life Criteria for Pyrethroid Insecticides (DFG Administrative Report 00-6, 2000)

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-17 (Oxn_CI-17_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-11-22 and 2018-11-22

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135716, Bifenthrin	Region 4
Channel Islands Harbor

LOE ID:

258125

Pollutant:

Bifenthrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The genus mean acute value for a mysid (Mysidopsis bahia) is 0.00397 ug/L (DFG 00-6, 2000).

Guideline Reference:

Aquatic Life Criteria for Pyrethroid Insecticides (DFG Administrative Report 00-6, 2000)

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-16 (Oxn_CI-16_Channel Islands Harbor).

Temporal Representation:

The samples were collected between the dates of 2018-10-08 and 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY


DECISION ID	135726	Region 4
Channel Islands Harbor

Pollutant:	Permethrin
Final Listing Decision:	List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Sources:	A Source Unknown
Expected TMDL Completion Date:	2037
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status. 1 lines of evidence are available in the administrative record to assess this pollutant. 2 of the 2 samples exceed the CRITERIA. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification in favor of placing this water segment-pollutant combination on the CWA section 303(d) List. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. 2 of the 2 samples exceed the CRITERIA and this exceeds the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.

Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should be placed on the section 303(d) list because applicable water quality standards are exceeded and a pollutant contributes to or causes the problem.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.

Line of Evidence (LOE) for Decision ID 135726, Permethrin	Region 4
Channel Islands Harbor

LOE ID:

264720

Pollutant:

Permethrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Permethrin. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The interim criteria maximum concentration to protect aquatic life in saline water is 0.001 ug/L (DFG 00-6, 2000).

Guideline Reference:

Aquatic Life Criteria for Pyrethroid Insecticides (DFG Administrative Report 00-6, 2000)

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-27 (Oxn_CI-27_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135726, Permethrin	Region 4
Channel Islands Harbor

LOE ID:

264952

Pollutant:

Permethrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Permethrin. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The interim criteria maximum concentration to protect aquatic life in saline water is 0.001 ug/L (DFG 00-6, 2000).

Guideline Reference:

Aquatic Life Criteria for Pyrethroid Insecticides (DFG Administrative Report 00-6, 2000)

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-19 (Oxn_CI-19_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135726, Permethrin	Region 4
Channel Islands Harbor

LOE ID:

264985

Pollutant:

Permethrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support and the results are as follows: 1 of the 1 samples exceeded the water quality threshold for Permethrin. Although a total of 3 samples were collected, 2 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The interim criteria maximum concentration to protect aquatic life in saline water is 0.001 ug/L (DFG 00-6, 2000).

Guideline Reference:

Aquatic Life Criteria for Pyrethroid Insecticides (DFG Administrative Report 00-6, 2000)

Spatial Representation:

The samples were collected at 1 monitoring site (Oxn_CI-17).

Temporal Representation:

Data for this waterbody was collected over the date range 2018-10-08 to 2018-11-29

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135726, Permethrin	Region 4
Channel Islands Harbor

LOE ID:

264971

Pollutant:

Permethrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Permethrin. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The interim criteria maximum concentration to protect aquatic life in saline water is 0.001 ug/L (DFG 00-6, 2000).

Guideline Reference:

Aquatic Life Criteria for Pyrethroid Insecticides (DFG Administrative Report 00-6, 2000)

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-22 (Oxn_CI-22_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135726, Permethrin	Region 4
Channel Islands Harbor

LOE ID:

264968

Pollutant:

Permethrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Permethrin. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The interim criteria maximum concentration to protect aquatic life in saline water is 0.001 ug/L (DFG 00-6, 2000).

Guideline Reference:

Aquatic Life Criteria for Pyrethroid Insecticides (DFG Administrative Report 00-6, 2000)

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-10 (Oxn_CI-10_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135726, Permethrin	Region 4
Channel Islands Harbor

LOE ID:

264876

Pollutant:

Permethrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Permethrin. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The interim criteria maximum concentration to protect aquatic life in saline water is 0.001 ug/L (DFG 00-6, 2000).

Guideline Reference:

Aquatic Life Criteria for Pyrethroid Insecticides (DFG Administrative Report 00-6, 2000)

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-21 (Oxn_CI-21_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135726, Permethrin	Region 4
Channel Islands Harbor

LOE ID:

264697

Pollutant:

Permethrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Permethrin. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The interim criteria maximum concentration to protect aquatic life in saline water is 0.001 ug/L (DFG 00-6, 2000).

Guideline Reference:

Aquatic Life Criteria for Pyrethroid Insecticides (DFG Administrative Report 00-6, 2000)

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-26 (Oxn_CI-26_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135726, Permethrin	Region 4
Channel Islands Harbor

LOE ID:

264871

Pollutant:

Permethrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Permethrin. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The interim criteria maximum concentration to protect aquatic life in saline water is 0.001 ug/L (DFG 00-6, 2000).

Guideline Reference:

Aquatic Life Criteria for Pyrethroid Insecticides (DFG Administrative Report 00-6, 2000)

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-13 (Oxn_CI-13_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135726, Permethrin	Region 4
Channel Islands Harbor

LOE ID:

264432

Pollutant:

Permethrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Permethrin. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The interim criteria maximum concentration to protect aquatic life in saline water is 0.001 ug/L (DFG 00-6, 2000).

Guideline Reference:

Aquatic Life Criteria for Pyrethroid Insecticides (DFG Administrative Report 00-6, 2000)

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-16 (Oxn_CI-16_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135726, Permethrin	Region 4
Channel Islands Harbor

LOE ID:

264850

Pollutant:

Permethrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The interim criteria maximum concentration to protect aquatic life in saline water is 0.001 ug/L (DFG 00-6, 2000).

Guideline Reference:

Aquatic Life Criteria for Pyrethroid Insecticides (DFG Administrative Report 00-6, 2000)

Spatial Representation:

The samples were collected at 1 monitoring site (Oxn_CI-02).

Temporal Representation:

Data for this waterbody was collected over the date range 2018-10-08 to 2018-11-29

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135726, Permethrin	Region 4
Channel Islands Harbor

LOE ID:

264839

Pollutant:

Permethrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Permethrin. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The interim criteria maximum concentration to protect aquatic life in saline water is 0.001 ug/L (DFG 00-6, 2000).

Guideline Reference:

Aquatic Life Criteria for Pyrethroid Insecticides (DFG Administrative Report 00-6, 2000)

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-20 (Oxn_CI-20_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135726, Permethrin	Region 4
Channel Islands Harbor

LOE ID:

264662

Pollutant:

Permethrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Permethrin. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The interim criteria maximum concentration to protect aquatic life in saline water is 0.001 ug/L (DFG 00-6, 2000).

Guideline Reference:

Aquatic Life Criteria for Pyrethroid Insecticides (DFG Administrative Report 00-6, 2000)

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-07 (Oxn_CI-07_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135726, Permethrin	Region 4
Channel Islands Harbor

LOE ID:

264486

Pollutant:

Permethrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Permethrin. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The interim criteria maximum concentration to protect aquatic life in saline water is 0.001 ug/L (DFG 00-6, 2000).

Guideline Reference:

Aquatic Life Criteria for Pyrethroid Insecticides (DFG Administrative Report 00-6, 2000)

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-25 (Oxn_CI-25_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135726, Permethrin	Region 4
Channel Islands Harbor

LOE ID:

264485

Pollutant:

Permethrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Permethrin. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The interim criteria maximum concentration to protect aquatic life in saline water is 0.001 ug/L (DFG 00-6, 2000).

Guideline Reference:

Aquatic Life Criteria for Pyrethroid Insecticides (DFG Administrative Report 00-6, 2000)

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-14 (Oxn_CI-14_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135726, Permethrin	Region 4
Channel Islands Harbor

LOE ID:

264835

Pollutant:

Permethrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Permethrin. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The interim criteria maximum concentration to protect aquatic life in saline water is 0.001 ug/L (DFG 00-6, 2000).

Guideline Reference:

Aquatic Life Criteria for Pyrethroid Insecticides (DFG Administrative Report 00-6, 2000)

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-23 (Oxn_CI-23_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135726, Permethrin	Region 4
Channel Islands Harbor

LOE ID:

264908

Pollutant:

Permethrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Permethrin. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The interim criteria maximum concentration to protect aquatic life in saline water is 0.001 ug/L (DFG 00-6, 2000).

Guideline Reference:

Aquatic Life Criteria for Pyrethroid Insecticides (DFG Administrative Report 00-6, 2000)

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-12 (Oxn_CI-12_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135726, Permethrin	Region 4
Channel Islands Harbor

LOE ID:

264907

Pollutant:

Permethrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Permethrin. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The interim criteria maximum concentration to protect aquatic life in saline water is 0.001 ug/L (DFG 00-6, 2000).

Guideline Reference:

Aquatic Life Criteria for Pyrethroid Insecticides (DFG Administrative Report 00-6, 2000)

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-08 (Oxn_CI-08_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135726, Permethrin	Region 4
Channel Islands Harbor

LOE ID:

264906

Pollutant:

Permethrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Permethrin. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The interim criteria maximum concentration to protect aquatic life in saline water is 0.001 ug/L (DFG 00-6, 2000).

Guideline Reference:

Aquatic Life Criteria for Pyrethroid Insecticides (DFG Administrative Report 00-6, 2000)

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-31 (Oxn_CI-31_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135726, Permethrin	Region 4
Channel Islands Harbor

LOE ID:

264737

Pollutant:

Permethrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Permethrin. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The interim criteria maximum concentration to protect aquatic life in saline water is 0.001 ug/L (DFG 00-6, 2000).

Guideline Reference:

Aquatic Life Criteria for Pyrethroid Insecticides (DFG Administrative Report 00-6, 2000)

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-06 (Oxn_CI-06_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135726, Permethrin	Region 4
Channel Islands Harbor

LOE ID:

264470

Pollutant:

Permethrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Permethrin. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The interim criteria maximum concentration to protect aquatic life in saline water is 0.001 ug/L (DFG 00-6, 2000).

Guideline Reference:

Aquatic Life Criteria for Pyrethroid Insecticides (DFG Administrative Report 00-6, 2000)

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-03 (Oxn_CI-03_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135726, Permethrin	Region 4
Channel Islands Harbor

LOE ID:

264799

Pollutant:

Permethrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Permethrin. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The interim criteria maximum concentration to protect aquatic life in saline water is 0.001 ug/L (DFG 00-6, 2000).

Guideline Reference:

Aquatic Life Criteria for Pyrethroid Insecticides (DFG Administrative Report 00-6, 2000)

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-24 (Oxn_CI-24_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135726, Permethrin	Region 4
Channel Islands Harbor

LOE ID:

264449

Pollutant:

Permethrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Permethrin. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The interim criteria maximum concentration to protect aquatic life in saline water is 0.001 ug/L (DFG 00-6, 2000).

Guideline Reference:

Aquatic Life Criteria for Pyrethroid Insecticides (DFG Administrative Report 00-6, 2000)

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-09 (Oxn_CI-09_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135726, Permethrin	Region 4
Channel Islands Harbor

LOE ID:

264707

Pollutant:

Permethrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Permethrin. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The interim criteria maximum concentration to protect aquatic life in saline water is 0.001 ug/L (DFG 00-6, 2000).

Guideline Reference:

Aquatic Life Criteria for Pyrethroid Insecticides (DFG Administrative Report 00-6, 2000)

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-11 (Oxn_CI-11_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-10 to 2018-10-10

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135726, Permethrin	Region 4
Channel Islands Harbor

LOE ID:

264800

Pollutant:

Permethrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Permethrin. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The interim criteria maximum concentration to protect aquatic life in saline water is 0.001 ug/L (DFG 00-6, 2000).

Guideline Reference:

Aquatic Life Criteria for Pyrethroid Insecticides (DFG Administrative Report 00-6, 2000)

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-18 (Oxn_CI-18_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY

Line of Evidence (LOE) for Decision ID 135726, Permethrin	Region 4
Channel Islands Harbor

LOE ID:

264724

Pollutant:

Permethrin

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Channel Island Harbor Nutrient Study data for Channel Islands Harbor to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Permethrin. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.

Data Reference:

Field, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The interim criteria maximum concentration to protect aquatic life in saline water is 0.001 ug/L (DFG 00-6, 2000).

Guideline Reference:

Aquatic Life Criteria for Pyrethroid Insecticides (DFG Administrative Report 00-6, 2000)

Spatial Representation:

The samples were collected at 1 monitoring site: Oxn_CI-15 (Oxn_CI-15_Channel Islands Harbor).

Temporal Representation:

Data for this waterbody were collected over the date range 2018-10-08 to 2018-10-08

Environmental Conditions:

QAPP Information:

Aquatic Bioassay & Consulting. 2020. CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY.

QAPP Information Reference(s):

CHANNEL ISLANDS HARBOR NUTRIENT SOURCES & SINKS STUDY


DECISION ID	94624	Region 4
Channel Islands Harbor

Pollutant:	Endosulfan
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)(2016)
Revision Status	Original
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence are necessary to assess listing status. 3 lines of evidence are available in the administrative record to assess this pollutant. 0 of 1 sample exceeded the CRITERIA. 0 of 1 sample exceeded the CRITERIA. 0 of 1 sample exceeded the CRITERIA. Based on the readily available data and information, the weight of evidence indicates that there is insufficient justification for placing this water segment-pollutant combination on the CWA section 303(d) List. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. 0 of 1, 0 of 1 and 0 of 1 sample exceeded the CRITERIA and this sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is fully supported using table 3.1. 4. Pursuant to SECTION 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.

Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.

Line of Evidence (LOE) for Decision ID 94624, Endosulfan	Region 4
Channel Islands Harbor

LOE ID:

83669

Pollutant:

Endosulfan

LOE Subgroup:

Pollutant-Tissue

Matrix:

Tissue

Fraction:

Fish fillet

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

Fish tissue analysis

Data Used to Assess Water Quality:

Data Reference:

RWB4 Miscellaneous Ventura Coastal 2006

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The modified OEHHA Fish Contaminant Goal for endosulfan (l and ll) in fish tissue is 13,000 ppb. This screening level assumes an average body weight of 70 kg and a consumption rate of 32 g/day. A cooking reduction factor of 1 is applied for skin-off fillets. (Klasing, S., and R. Brodberg, 2008; USEPA, 2000)

Guideline Reference:

Development of Fish Contaminant Goals and Advisory Tissue Levels for Common Contaminants in California Sport Fish: Chlordane, DDTs, Dieldrin, Methylmercury, PCBs, Selenium, and Toxaphene

Guideline Reference:

Guidance for Assessing Chemical Contaminant Data for Use In Fish Advisories Volume 1: Fish Sampling and Analysis

Spatial Representation:

Samples are collected by hand from three sub-locations (A,B,C) from site 410VHCHN5. The three samples per site were averaged prior to assessment.

Temporal Representation:

Representative samples of locally abundant species were collected on February 28, 2007.

Environmental Conditions:

QAPP Information:

Samples were collected as part of the State Water Board's Surface Water Ambient Monitoring Program.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 94624, Endosulfan	Region 4
Channel Islands Harbor

LOE ID:

82816

Pollutant:

Endosulfan

LOE Subgroup:

Pollutant-Tissue

Matrix:

Tissue

Fraction:

Shellfish

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

Shellfish surveys

Data Used to Assess Water Quality:

The sample did not exceed the guideline. All data was for endosulfan l.

Data Reference:

RWB4 Miscellaneous Ventura Coastal 2006

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The modified OEHHA Fish Contaminant Goal for endosulfan (l and ll) in shellfish tissue is 20,000 ppb. This screening level assumes an average body weight of 70 kg and a consumption rate of 21 g/day. (Brodberg, R.K., and G.A. Pollock, 1999; Klasing, S., and R. Brodberg, 2008; USEPA, 2000)

Guideline Reference:

Prevalence of Selected Target Chemical Contaminants in Sport Fish From Two California Lakes: Public health designed screening study. Sacramento, CA: Office of Environmental Health Hazard Assessment

Guideline Reference:

Development of Fish Contaminant Goals and Advisory Tissue Levels for Common Contaminants in California Sport Fish: Chlordane, DDTs, Dieldrin, Methylmercury, PCBs, Selenium, and Toxaphene

Guideline Reference:

Guidance for Assessing Chemical Contaminant Data for Use In Fish Advisories Volume 1: Fish Sampling and Analysis

Spatial Representation:

Data was collected at one station: Channel Islands Harbor 5 - 410VHCHN5.

Temporal Representation:

Data was collected on a single day 2/28/2007.

Environmental Conditions:

QAPP Information:

Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002

QAPP Information Reference(s):

Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version)

Line of Evidence (LOE) for Decision ID 94624, Endosulfan	Region 4
Channel Islands Harbor

LOE ID:

83670

Pollutant:

Endosulfan

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Zero of 1 sample collected exceeded the evaluation guideline.

Data Reference:

RWB4 Miscellaneous Ventura Coastal 2006

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

The endosulfan criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in saltwater is 0.0087 ug/L. This value corresponds to the sum of alpha-endosulfan and beta-endosulfan (USEPA National Recommended Water Quality Criteria, 2006).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Data were collected at the following station 410VHCHN5 (Channel Islands Harbor 5).

Temporal Representation:

The samples were collected on 10/12/2006.

Environmental Conditions:

QAPP Information:

The SWAMP QAPP (2006) was followed.

QAPP Information Reference(s):

Surface Water Ambient Monitoring Program Quality Assurance Program Plan


DECISION ID	94969	Region 4
Channel Islands Harbor

Pollutant:	Manganese
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)(2016)
Revision Status	Original
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence are necessary to assess listing status. 1 line of evidence is available in the administrative record to assess this pollutant. 0 of 1 sample exceeded the CRITERIA. Based on the readily available data and information, the weight of evidence indicates that there is insufficient justification for placing this water segment-pollutant combination on the CWA section 303(d) List. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. 0 of 1 sample exceeded the CRITERIA and this sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is fully supported using table 3.1. 4. Pursuant to SECTION 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.

Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.

Line of Evidence (LOE) for Decision ID 94969, Manganese	Region 4
Channel Islands Harbor

LOE ID:

83590

Pollutant:

Manganese

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

State Water Board staff assessed 4 data for Channel Islands Harbor to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Manganese.

Data Reference:

RWB4 Miscellaneous Ventura Coastal 2006

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The Manganese criteria for the protection of human health from the consumption of organisms only is 100 ug/L (California Toxics Rule, 2000).

Guideline Reference:

Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition

Spatial Representation:

Data for this line of evidence for Channel Islands Harbor was collected at 1 monitoring site [ Channel Islands Harbor 5 - 410VHCHN5]

Temporal Representation:

Data was collected on a single day 10/12/2006.

Environmental Conditions:

Staff is not aware of any special conditions that might affect interpretation of the data.

QAPP Information:

The SWAMP QAPP (2008) was followed.

QAPP Information Reference(s):

Surface Water Ambient Monitoring Program Quality Assurance Program Plan


DECISION ID	94344	Region 4
Channel Islands Harbor

Pollutant:	Toxicity
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)(2016)
Revision Status	Original
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	This pollutant is being considered for placement on the CWA section 303(d) List under section 3.6 of the Listing Policy. Under section 3.6 a single line of evidence are necessary to assess listing status. 2 lines of evidence are available in the administrative record to assess this pollutant. 0 of 5 samples exceeded the GUIDELINE. 0 of 5 samples exceeded the GUIDELINE. Based on the readily available data and information, the weight of evidence indicates that there is insufficient justification for placing this water segment-pollutant combination on the CWA section 303(d) List. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. 0 of 5 and 0 of 5 samples exceeded the GUIDELINE and this sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is fully supported using table 3.1. 4. Pursuant to SECTION 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.

Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.

Line of Evidence (LOE) for Decision ID 94344, Toxicity	Region 4
Channel Islands Harbor

LOE ID:

83620

Pollutant:

Toxicity

LOE Subgroup:

Toxicity

Matrix:

Sediment

Fraction:

None

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

TOXICITY TESTING

Data Used to Assess Water Quality:

Data Reference:

RWB4 Miscellaneous Ventura Coastal 2006

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Revised approach to toxicity test acceptability criteria using a statistical performance assessment. Environmental Toxicology and Chemistry, vol. 16, No. 6, pp 1322¿1329

Spatial Representation:

The samples were collected at stations 410VHCHN1, 410VHCHN2, 410VHCHN3, 410VHCHN4, and 410VHCHN5.

Temporal Representation:

The samples were collected in October 2006.

Environmental Conditions:

QAPP Information:

Data quality is good. Data results were recorded in the SWAMP database and follwed SWAMP protocols.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 94344, Toxicity	Region 4
Channel Islands Harbor

LOE ID:

83621

Pollutant:

Toxicity

LOE Subgroup:

Toxicity

Matrix:

Water

Fraction:

None

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

Not Specified

Data Used to Assess Water Quality:

Five samples were collected to evaluate water toxicity. None of the samples exhibited significant toxicity. The toxicity test included survival of Mytilus galloprovincialis. One sample can have multiple toxicity test results but will be counted only once. One sample is defined as being collected on the same day at the same location with the same lab sample id (if provided).

Data Reference:

RWB4 Miscellaneous Ventura Coastal 2006

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Revised approach to toxicity test acceptability criteria using a statistical performance assessment. Environmental Toxicology and Chemistry, vol. 16, No. 6, pp 1322¿1329

Spatial Representation:

Temporal Representation: