Draft California 2020 Integrated Report (303(d) List/305(b) Report)

Supporting Information

Regional Board 3 - Central Coast Region

Water Body Name:	Pacific Ocean (Point Ano Nuevo to Soquel Point)
Water Body ID:	CAO3041102220090612082544
Water Body Type:	Ocean


DECISION ID	113788	Region 3
Pacific Ocean (Point Ano Nuevo to Soquel Point)

Pollutant:	Dieldrin
Final Listing Decision:	Do Not Delist from 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	List on 303(d) list (TMDL required list)(2018)
Revision Status	Revised
Sources:	A Source Unknown
Expected TMDL Completion Date:	2035
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 4.5 of the Listing Policy. Five lines of evidence are available in the administrative record to assess this pollutant. Twelve of 34 shellfish tissue samples exceeded the evaluation guideline. Zero of ten fish tissue samples exceeded the evaluation guideline applied for marine habitat beneficial uses. Zero of zero fish tissue samples exceeded the evaluation guideline for commercial beneficial uses, though there were ten fish tissue samples collect, they all were thrown out because of quantification issues. For the samples evaluated for marine habitat, and commercial beneficial uses, 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 supported using table 3.1. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against 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. Twelve of 34 shellfish tissue samples exceeded the evaluation guideline applied to protect for shellfish harvesting beneficial uses and this exceeds 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 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 removed from the section 303(d) List because applicable water quality standards for the pollutant are 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 113788, Dieldrin	Region 3
Pacific Ocean (Point Ano Nuevo to Soquel Point)

LOE ID:

150657

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:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Waterboard staff assessed SWAMP Sportfish Coastal Zones data for Pacific Ocean (Point Ano Nuevo to Soquel Point) to determine beneficial use support and the results are as follows: Zero of Zero samples exceeded the water quality threshold for Dieldrin. Although data was collected for 4 fish species (1 composite(s) of White Croaker each composed of 5 fish per composite, 1 composite(s) of Kelp Greenling each composed of 3 fish per composite, 1 composite(s) of Lingcod each composed of 5 fish per composite, 1 composite(s) of Gopher Rockfish each composed of 5 fish per composite), all 4 sample(s) had to be thrown out due to quantitation issues.

Data Reference:

Habitat, Tissue data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

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. (Water Quality Control Plan, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries).

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

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:

Data was collected from 1 station(s) with the station code(s): 30442SCWB.

Temporal Representation:

Data for this line of evidence were collected between 2010-06-08 and 2010-06-09. When composited fish were collected over multiple days, the first day of fish collection was used as the sample date in the LOE, both for LOE writing, and for averaging period purposes.

Environmental Conditions:

QAPP Information:

SWAMP QAPP

QAPP Information Reference(s):

Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program

Line of Evidence (LOE) for Decision ID 113788, Dieldrin	Region 3
Pacific Ocean (Point Ano Nuevo to Soquel Point)

LOE ID:

150464

Pollutant:

Dieldrin

LOE Subgroup:

Pollutant-Tissue

Matrix:

Tissue

Fraction:

Fish fillet

Beneficial Use:

Marine 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 Sportfish Coastal Zones data for Pacific Ocean (Point Ano Nuevo to Soquel Point) to determine beneficial use support and the results are as follows 0 of the 4 samples exceeded the water quality threshold for Dieldrin. Data were collected for 4 fish species (1 composite(s) of White Croaker each composed of 5 fish per composite, 1 composite(s) of Kelp Greenling each composed of 3 fish per composite, 1 composite(s) of Lingcod each composed of 5 fish per composite, 1 composite(s) of Gopher Rockfish each composed of 5 fish per composite).

Data Reference:

Habitat, Tissue data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

National Academy of Science guidelines (NAS 1972) establish a maximum Dieldrin concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.

Guideline Reference:

National Academy of Sciences. Water Quality Criteria 1972. EPA-R3-73-033. Washington, D.C.: U.S. Environmental Protection Agency

Spatial Representation:

Data was collected from 1 station(s) with the station code(s): 30442SCWB.

Temporal Representation:

Environmental Conditions:

QAPP Information:

SWAMP QAPP

QAPP Information Reference(s):

Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program

Line of Evidence (LOE) for Decision ID 113788, Dieldrin	Region 3
Pacific Ocean (Point Ano Nuevo to Soquel Point)

LOE ID:

150431

Pollutant:

Dieldrin

LOE Subgroup:

Pollutant-Tissue

Matrix:

Tissue

Fraction:

Fish fillet

Beneficial Use:

Marine 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 Sportfish Coastal Zones data for Pacific Ocean (Point Ano Nuevo to Soquel Point) to determine beneficial use support and the results are as follows 0 of the 6 samples exceeded the water quality threshold for Dieldrin. Data were collected for 6 fish species (1 composite(s) of White Croaker each composed of 5 fish per composite, 1 composite(s) of Kelp Greenling each composed of 5 fish per composite, 1 composite(s) of Lingcod each composed of 4 fish per composite, 1 composite(s) of Cabezon each composed of 4 fish per composite, 1 composite(s) of Black Rockfish each composed of 5 fish per composite, 1 composite(s) of Blue Rockfish each composed of 5 fish per composite).

Data Reference:

Habitat, Tissue data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

Guideline Reference:

National Academy of Sciences. Water Quality Criteria 1972. EPA-R3-73-033. Washington, D.C.: U.S. Environmental Protection Agency

Spatial Representation:

Data was collected from 1 station(s) with the station code(s): 30443SCCA.

Temporal Representation:

Data for this line of evidence were collected between 2010-06-09 and 2010-09-08. When composited fish were collected over multiple days, the first day of fish collection was used as the sample date in the LOE, both for LOE writing, and for averaging period purposes.

Environmental Conditions:

QAPP Information:

SWAMP QAPP

QAPP Information Reference(s):

Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program

Line of Evidence (LOE) for Decision ID 113788, Dieldrin	Region 3
Pacific Ocean (Point Ano Nuevo to Soquel Point)

LOE ID:

30099

Pollutant:

Dieldrin

LOE Subgroup:

Pollutant-Tissue

Matrix:

Tissue

Fraction:

None

Beneficial Use:

Shellfish Harvesting

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Resident mussles (composites (40-50 individuals) of resident Mytilus californianus) were collected by CCLEAN staff twice a year in 2002, 2003, 2004, 2005 and 2006 at two sample locations. Twelve of the 34 composite samples exceeded the OEHHA screening value for shellfish.

Data Reference:

Final Data CCLEAN Mussel Tissue and Solid Phase Extraction data

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

OEHHA Screening value for the protection of human health from the consumption of fish and shellfish. Brodberg and Pollock calculated "California Lakes Screening Values" for a 70 kg adult human and based on a fish consumption value of 21 g/day (1999). OEHHA Screening Value in fish and shellfish tissue for Dieldrin is 2.0 ug/Kg.

Objective/Criterion 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

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Mussles were collected from three coastal locations: rock crop adjacent to Scott Creek Mouth, rock outcrop adjacent to Laguna Creek mouth and rock outcrop at the Hook (end of 41st street in Santa Cruz)

Temporal Representation:

Samples were collected twice a year at the Scott Creek site in 2002, 2003, 2004, 2005 and 2006. Samples were collected twice a year at the Hook site in 2004, 2005 and 2006 and once a year in 2002 and 2003. Samples were collected twice a year at the Laguna Creek site in 2003, and 2006 and once in 2002, 2004 and 2005.

Environmental Conditions:

QAPP Information:

CCLEAN has an approved QAPP

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 113788, Dieldrin	Region 3
Pacific Ocean (Point Ano Nuevo to Soquel Point)

LOE ID:

150641

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:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Waterboard staff assessed SWAMP Sportfish Coastal Zones data for Pacific Ocean (Point Ano Nuevo to Soquel Point) to determine beneficial use support and the results are as follows: Zero of Zero samples exceeded the water quality threshold for Dieldrin. Although data was collected for 6 fish species (1 composite(s) of White Croaker each composed of 5 fish per composite, 1 composite(s) of Kelp Greenling each composed of 5 fish per composite, 1 composite(s) of Lingcod each composed of 4 fish per composite, 1 composite(s) of Cabezon each composed of 4 fish per composite, 1 composite(s) of Black Rockfish each composed of 5 fish per composite, 1 composite(s) of Blue Rockfish each composed of 5 fish per composite), all 6 sample(s) had to be thrown out due to quantitation issues.

Data Reference:

Habitat, Tissue data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

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 from 1 station(s) with the station code(s): 30443SCCA.

Temporal Representation:

Data for this line of evidence were collected between 2010-06-09 and 2010-06-17. When composited fish were collected over multiple days, the first day of fish collection was used as the sample date in the LOE, both for LOE writing, and for averaging period purposes.

Environmental Conditions:

QAPP Information:

SWAMP QAPP

QAPP Information Reference(s):

Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program


DECISION ID	113798	Region 3
Pacific Ocean (Point Ano Nuevo to Soquel Point)

Pollutant:	Aldrin
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 section 303(d) List under section 3.5 of the Listing Policy. Under section 3.5, one line of evidence is necessary to assess listing status. Two lines of evidence are available in the administrative record to assess this pollutant. Zero out of twelve tissue samples exceeded the evaluation guideline (National Academy of Science, 1972) used for protection of aquatic life from bioaccumulation of toxic substances. 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 section 303(d) List in the Water Quality Limited Segments category. 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. 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. Zero out of twelve tissue samples exceeded the evaluation 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. 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:

Line of Evidence (LOE) for Decision ID 113798, Aldrin	Region 3
Pacific Ocean (Point Ano Nuevo to Soquel Point)

LOE ID:

150537

Pollutant:

Aldrin

LOE Subgroup:

Pollutant-Tissue

Matrix:

Tissue

Fraction:

Fish fillet

Beneficial Use:

Marine 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 Sportfish Coastal Zones data for Pacific Ocean (Point Ano Nuevo to Soquel Point) to determine beneficial use support and the results are as follows 0 of the 5 samples exceeded the water quality threshold for Aldrin. Data were collected for 5 fish species (1 composite(s) of White Croaker each composed of 5 fish per composite, 1 composite(s) of Kelp Greenling each composed of 3 fish per composite, 1 composite(s) of Lingcod each composed of 5 fish per composite, 1 composite(s) of Cabezon each composed of 5 fish per composite, 1 composite(s) of Gopher Rockfish each composed of 5 fish per composite).

Data Reference:

Habitat, Tissue data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

National Academy of Science guidelines (NAS 1972) establish a maximum Aldrin concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.

Guideline Reference:

National Academy of Sciences. Water Quality Criteria 1972. EPA-R3-73-033. Washington, D.C.: U.S. Environmental Protection Agency

Spatial Representation:

Data was collected from 1 station(s) with the station code(s): 30442SCWB.

Temporal Representation:

Environmental Conditions:

QAPP Information:

SWAMP QAPP

QAPP Information Reference(s):

Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program

Line of Evidence (LOE) for Decision ID 113798, Aldrin	Region 3
Pacific Ocean (Point Ano Nuevo to Soquel Point)

LOE ID:

150581

Pollutant:

Aldrin

LOE Subgroup:

Pollutant-Tissue

Matrix:

Tissue

Fraction:

Fish fillet

Beneficial Use:

Marine 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 Sportfish Coastal Zones data for Pacific Ocean (Point Ano Nuevo to Soquel Point) to determine beneficial use support and the results are as follows 0 of the 7 samples exceeded the water quality threshold for Aldrin. Data were collected for 7 fish species (1 composite(s) of White Croaker each composed of 5 fish per composite, 1 composite(s) of Kelp Greenling each composed of 5 fish per composite, 1 composite(s) of Lingcod each composed of 4 fish per composite, 1 composite(s) of Cabezon each composed of 4 fish per composite, 1 composite(s) of Gopher Rockfish each composed of 3 fish per composite, 1 composite(s) of Black Rockfish each composed of 5 fish per composite, 1 composite(s) of Blue Rockfish each composed of 5 fish per composite).

Data Reference:

Habitat, Tissue data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

Guideline Reference:

National Academy of Sciences. Water Quality Criteria 1972. EPA-R3-73-033. Washington, D.C.: U.S. Environmental Protection Agency

Spatial Representation:

Data was collected from 1 station(s) with the station code(s): 30443SCCA.

Temporal Representation:

Environmental Conditions:

QAPP Information:

SWAMP QAPP

QAPP Information Reference(s):

Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program


DECISION ID	113787	Region 3
Pacific Ocean (Point Ano Nuevo to Soquel Point)

Pollutant:	Chlordane
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 section 303(d) List under section 3.5 of the Listing Policy. Under section 3.5 a single line of evidence is necessary to assess listing status. Four lines of evidence (LOEs) are available in the administrative record to assess this pollutant. Zero of the twelve fish tissue samples exceed the evaluation guideline applied to protect for the commercial beneficial use, and zero of the twelve fish tissue samples exceed the evaluation guideline applied to protect for the aquatic life beneficial use. 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 supported using table 3.1. 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 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. Zero fish tissue samples exceed the evaluation guidelines. 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. 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:

Line of Evidence (LOE) for Decision ID 113787, Chlordane	Region 3
Pacific Ocean (Point Ano Nuevo to Soquel Point)

LOE ID:

151025

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:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed SWAMP Sportfish Coastal Zones data for Pacific Ocean (Point Ano Nuevo to Soquel Point) to determine beneficial use support and the results are as follows 0 of the 7 samples exceeded the water quality threshold for Total Chlordanes. Data were collected for 7 fish species (1 composite(s) of White Croaker each composed of 5 fish per composite, 1 composite(s) of Kelp Greenling each composed of 5 fish per composite, 1 composite(s) of Lingcod each composed of 4 fish per composite, 1 composite(s) of Cabezon each composed of 4 fish per composite, 1 composite(s) of Gopher Rockfish each composed of 3 fish per composite, 1 composite(s) of Black Rockfish each composed of 5 fish per composite, 1 composite(s) of Blue Rockfish each composed of 5 fish per composite).

Data Reference:

Habitat, Tissue data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

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:

Data was collected from 1 station(s) with the station code(s): 30443SCCA.

Temporal Representation:

Environmental Conditions:

QAPP Information:

SWAMP QAPP

QAPP Information Reference(s):

Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program

Line of Evidence (LOE) for Decision ID 113787, Chlordane	Region 3
Pacific Ocean (Point Ano Nuevo to Soquel Point)

LOE ID:

151039

Pollutant:

Chlordane

LOE Subgroup:

Pollutant-Tissue

Matrix:

Tissue

Fraction:

Fish fillet

Beneficial Use:

Marine 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 Sportfish Coastal Zones data for Pacific Ocean (Point Ano Nuevo to Soquel Point) to determine beneficial use support and the results are as follows 0 of the 5 samples exceeded the water quality threshold for Total Chlordanes. Data were collected for 5 fish species (1 composite(s) of White Croaker each composed of 5 fish per composite, 1 composite(s) of Kelp Greenling each composed of 3 fish per composite, 1 composite(s) of Lingcod each composed of 5 fish per composite, 1 composite(s) of Cabezon each composed of 5 fish per composite, 1 composite(s) of Gopher Rockfish each composed of 5 fish per composite).

Data Reference:

Habitat, Tissue data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

National Academy of Science guidelines (NAS 1972) establish a maximum total Chlordane concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.

Guideline Reference:

National Academy of Sciences. Water Quality Criteria 1972. EPA-R3-73-033. Washington, D.C.: U.S. Environmental Protection Agency

Spatial Representation:

Data was collected from 1 station(s) with the station code(s): 30442SCWB.

Temporal Representation:

Environmental Conditions:

QAPP Information:

SWAMP QAPP

QAPP Information Reference(s):

Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program

Line of Evidence (LOE) for Decision ID 113787, Chlordane	Region 3
Pacific Ocean (Point Ano Nuevo to Soquel Point)

LOE ID:

151041

Pollutant:

Chlordane

LOE Subgroup:

Pollutant-Tissue

Matrix:

Tissue

Fraction:

Fish fillet

Beneficial Use:

Marine 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 Sportfish Coastal Zones data for Pacific Ocean (Point Ano Nuevo to Soquel Point) to determine beneficial use support and the results are as follows 0 of the 7 samples exceeded the water quality threshold for Total Chlordanes. Data were collected for 7 fish species (1 composite(s) of White Croaker each composed of 5 fish per composite, 1 composite(s) of Kelp Greenling each composed of 5 fish per composite, 1 composite(s) of Lingcod each composed of 4 fish per composite, 1 composite(s) of Cabezon each composed of 4 fish per composite, 1 composite(s) of Gopher Rockfish each composed of 3 fish per composite, 1 composite(s) of Black Rockfish each composed of 5 fish per composite, 1 composite(s) of Blue Rockfish each composed of 5 fish per composite).

Data Reference:

Habitat, Tissue data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

Guideline Reference:

National Academy of Sciences. Water Quality Criteria 1972. EPA-R3-73-033. Washington, D.C.: U.S. Environmental Protection Agency

Spatial Representation:

Data was collected from 1 station(s) with the station code(s): 30443SCCA.

Temporal Representation:

Environmental Conditions:

QAPP Information:

SWAMP QAPP

QAPP Information Reference(s):

Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program

Line of Evidence (LOE) for Decision ID 113787, Chlordane	Region 3
Pacific Ocean (Point Ano Nuevo to Soquel Point)

LOE ID:

151071

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:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed SWAMP Sportfish Coastal Zones data for Pacific Ocean (Point Ano Nuevo to Soquel Point) to determine beneficial use support and the results are as follows 0 of the 5 samples exceeded the water quality threshold for Total Chlordanes. Data were collected for 5 fish species (1 composite(s) of White Croaker each composed of 5 fish per composite, 1 composite(s) of Kelp Greenling each composed of 3 fish per composite, 1 composite(s) of Lingcod each composed of 5 fish per composite, 1 composite(s) of Cabezon each composed of 5 fish per composite, 1 composite(s) of Gopher Rockfish each composed of 5 fish per composite).

Data Reference:

Habitat, Tissue data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

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 from 1 station(s) with the station code(s): 30442SCWB.

Temporal Representation:

Environmental Conditions:

QAPP Information:

SWAMP QAPP

QAPP Information Reference(s):

Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program


DECISION ID	129819	Region 3
Pacific Ocean (Point Ano Nuevo to Soquel Point)

Pollutant:	DDT (Dichlorodiphenyltrichloroethane)
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 section 303(d) List under section 3.5 of the Listing Policy. Four lines of evidence are available in the administrative record to assess this pollutant. Note that this decision combines the pollutant ‘DDT’ and ‘total DDT (sum of 4,4'- and 2,4'- isomers of DDT, DDE, and DDD).’ Four LOEs summarize tissue samples. One out of twelve tissue samples exceed the total DDT evaluation guideline (Klasing, S., and R. Brodberg, 2008) set to protect for commercial beneficial uses. Zero out of twelve tissue samples exceed the total DDT evaluation guideline (NAS 1972) set to protect for the marine habitat beneficial uses. 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. 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. One of 12 tissue samples exceeded the evaluation guidelines for the commercial beneficial use, and zero of 12 tissue samples exceeded the evaluation guideline for the marine habitat beneficial use. 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. 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:

Line of Evidence (LOE) for Decision ID 129819, DDT (Dichlorodiphenyltrichloroethane)	Region 3
Pacific Ocean (Point Ano Nuevo to Soquel Point)

LOE ID:

151075

Pollutant:

Total DDT (sum of 4,4'- and 2,4'- isomers of DDT, DDE, and DDD)

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:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed SWAMP Sportfish Coastal Zones data for Pacific Ocean (Point Ano Nuevo to Soquel Point) to determine beneficial use support and the results are as follows 0 of the 7 samples exceeded the water quality threshold for Total DDT (sum of 4,4'- and 2,4'- isomers of DDT, DDE, and DDD). Data were collected for 7 fish species (1 composite(s) of White Croaker each composed of 5 fish per composite, 1 composite(s) of Kelp Greenling each composed of 5 fish per composite, 1 composite(s) of Lingcod each composed of 4 fish per composite, 1 composite(s) of Cabezon each composed of 4 fish per composite, 1 composite(s) of Gopher Rockfish each composed of 3 fish per composite, 1 composite(s) of Black Rockfish each composed of 5 fish per composite, 1 composite(s) of Blue Rockfish each composed of 5 fish per composite).

Data Reference:

Habitat, Tissue data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

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:

Data was collected from 1 station(s) with the station code(s): 30443SCCA.

Temporal Representation:

Environmental Conditions:

QAPP Information:

SWAMP QAPP

QAPP Information Reference(s):

Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program

Line of Evidence (LOE) for Decision ID 129819, DDT (Dichlorodiphenyltrichloroethane)	Region 3
Pacific Ocean (Point Ano Nuevo to Soquel Point)

LOE ID:

150893

Pollutant:

Total DDT (sum of 4,4'- and 2,4'- isomers of DDT, DDE, and DDD)

LOE Subgroup:

Pollutant-Tissue

Matrix:

Tissue

Fraction:

Fish fillet

Beneficial Use:

Marine 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 Sportfish Coastal Zones data for Pacific Ocean (Point Ano Nuevo to Soquel Point) to determine beneficial use support and the results are as follows 0 of the 5 samples exceeded the water quality threshold for Total DDT (sum of 4,4'- and 2,4'- isomers of DDT, DDE, and DDD). Data were collected for 5 fish species (1 composite(s) of White Croaker each composed of 5 fish per composite, 1 composite(s) of Kelp Greenling each composed of 3 fish per composite, 1 composite(s) of Lingcod each composed of 5 fish per composite, 1 composite(s) of Cabezon each composed of 5 fish per composite, 1 composite(s) of Gopher Rockfish each composed of 5 fish per composite).

Data Reference:

Habitat, Tissue data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

National Academy of Science guidelines (NAS 1972) establish a maximum total DDT concentration of 1000 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.

Guideline Reference:

National Academy of Sciences. Water Quality Criteria 1972. EPA-R3-73-033. Washington, D.C.: U.S. Environmental Protection Agency

Spatial Representation:

Data was collected from 1 station(s) with the station code(s): 30442SCWB.

Temporal Representation:

Environmental Conditions:

QAPP Information:

SWAMP QAPP

QAPP Information Reference(s):

Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program

Line of Evidence (LOE) for Decision ID 129819, DDT (Dichlorodiphenyltrichloroethane)	Region 3
Pacific Ocean (Point Ano Nuevo to Soquel Point)

LOE ID:

150889

Pollutant:

Total DDT (sum of 4,4'- and 2,4'- isomers of DDT, DDE, and DDD)

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:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed SWAMP Sportfish Coastal Zones data for Pacific Ocean (Point Ano Nuevo to Soquel Point) to determine beneficial use support and the results are as follows 1 of the 5 samples exceeded the water quality threshold for Total DDT (sum of 4,4'- and 2,4'- isomers of DDT, DDE, and DDD). Data were collected for 5 fish species (1 composite(s) of White Croaker each composed of 5 fish per composite, 1 composite(s) of Kelp Greenling each composed of 3 fish per composite, 1 composite(s) of Lingcod each composed of 5 fish per composite, 1 composite(s) of Cabezon each composed of 5 fish per composite, 1 composite(s) of Gopher Rockfish each composed of 5 fish per composite). Of these, 1 species (Lingcod) exceeded the water quality threshold.

Data Reference:

Habitat, Tissue data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

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 from 1 station(s) with the station code(s): 30442SCWB.

Temporal Representation:

Environmental Conditions:

QAPP Information:

SWAMP QAPP

QAPP Information Reference(s):

Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program

Line of Evidence (LOE) for Decision ID 129819, DDT (Dichlorodiphenyltrichloroethane)	Region 3
Pacific Ocean (Point Ano Nuevo to Soquel Point)

LOE ID:

150992

Pollutant:

Total DDT (sum of 4,4'- and 2,4'- isomers of DDT, DDE, and DDD)

LOE Subgroup:

Pollutant-Tissue

Matrix:

Tissue

Fraction:

Fish fillet

Beneficial Use:

Marine 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 Sportfish Coastal Zones data for Pacific Ocean (Point Ano Nuevo to Soquel Point) to determine beneficial use support and the results are as follows 0 of the 7 samples exceeded the water quality threshold for Total DDT (sum of 4,4'- and 2,4'- isomers of DDT, DDE, and DDD). Data were collected for 7 fish species (1 composite(s) of White Croaker each composed of 5 fish per composite, 1 composite(s) of Kelp Greenling each composed of 5 fish per composite, 1 composite(s) of Lingcod each composed of 4 fish per composite, 1 composite(s) of Cabezon each composed of 4 fish per composite, 1 composite(s) of Gopher Rockfish each composed of 3 fish per composite, 1 composite(s) of Black Rockfish each composed of 5 fish per composite, 1 composite(s) of Blue Rockfish each composed of 5 fish per composite).

Data Reference:

Habitat, Tissue data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

Guideline Reference:

National Academy of Sciences. Water Quality Criteria 1972. EPA-R3-73-033. Washington, D.C.: U.S. Environmental Protection Agency

Spatial Representation:

Data was collected from 1 station(s) with the station code(s): 30443SCCA.

Temporal Representation:

Environmental Conditions:

QAPP Information:

SWAMP QAPP

QAPP Information Reference(s):

Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program


DECISION ID	113789	Region 3
Pacific Ocean (Point Ano Nuevo to Soquel Point)

Pollutant:	Endosulfan
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 section 303(d) List under section 3.5 of the Listing Policy. Under section 3.5 a single line of evidence is necessary to assess listing status. Four lines of evidence (LOEs) are available in the administrative record to assess this pollutant. Zero of the twelve fish tissue samples exceed the evaluation guideline applied to protect for the commercial beneficial use, and zero of the twelve fish tissue samples exceed the evaluation guideline applied to protect for the marine aquatic life beneficial use. 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 supported using table 3.1. 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 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. Zero fish tissue samples exceed the evaluation guidelines. 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. 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:

Line of Evidence (LOE) for Decision ID 113789, Endosulfan	Region 3
Pacific Ocean (Point Ano Nuevo to Soquel Point)

LOE ID:

150528

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:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed SWAMP Sportfish Coastal Zones data for Pacific Ocean (Point Ano Nuevo to Soquel Point) to determine beneficial use support and the results are as follows 0 of the 5 samples exceeded the water quality threshold for Endosulfan. Data were collected for 5 fish species (1 composite(s) of White Croaker each composed of 5 fish per composite, 1 composite(s) of Kelp Greenling each composed of 3 fish per composite, 1 composite(s) of Lingcod each composed of 5 fish per composite, 1 composite(s) of Cabezon each composed of 5 fish per composite, 1 composite(s) of Gopher Rockfish each composed of 5 fish per composite).

Data Reference:

Habitat, Tissue data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

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:

Data was collected from 1 station(s) with the station code(s): 30442SCWB.

Temporal Representation:

Environmental Conditions:

QAPP Information:

SWAMP QAPP

QAPP Information Reference(s):

Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program

Line of Evidence (LOE) for Decision ID 113789, Endosulfan	Region 3
Pacific Ocean (Point Ano Nuevo to Soquel Point)

LOE ID:

150451

Pollutant:

Endosulfan

LOE Subgroup:

Pollutant-Tissue

Matrix:

Tissue

Fraction:

Fish fillet

Beneficial Use:

Marine 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 Sportfish Coastal Zones data for Pacific Ocean (Point Ano Nuevo to Soquel Point) to determine beneficial use support and the results are as follows 0 of the 7 samples exceeded the water quality threshold for Endosulfan. Data were collected for 7 fish species (1 composite(s) of White Croaker each composed of 5 fish per composite, 1 composite(s) of Kelp Greenling each composed of 5 fish per composite, 1 composite(s) of Lingcod each composed of 4 fish per composite, 1 composite(s) of Cabezon each composed of 4 fish per composite, 1 composite(s) of Gopher Rockfish each composed of 3 fish per composite, 1 composite(s) of Black Rockfish each composed of 5 fish per composite, 1 composite(s) of Blue Rockfish each composed of 5 fish per composite).

Data Reference:

Habitat, Tissue data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

National Academy of Science guidelines (NAS 1972) establish a maximum Endosulfan, Total concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.

Guideline Reference:

National Academy of Sciences. Water Quality Criteria 1972. EPA-R3-73-033. Washington, D.C.: U.S. Environmental Protection Agency

Spatial Representation:

Data was collected from 1 station(s) with the station code(s): 30443SCCA.

Temporal Representation:

Environmental Conditions:

QAPP Information:

SWAMP QAPP

QAPP Information Reference(s):

Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program

Line of Evidence (LOE) for Decision ID 113789, Endosulfan	Region 3
Pacific Ocean (Point Ano Nuevo to Soquel Point)

LOE ID:

150468

Pollutant:

Endosulfan

LOE Subgroup:

Pollutant-Tissue

Matrix:

Tissue

Fraction:

Fish fillet

Beneficial Use:

Marine 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 Sportfish Coastal Zones data for Pacific Ocean (Point Ano Nuevo to Soquel Point) to determine beneficial use support and the results are as follows 0 of the 5 samples exceeded the water quality threshold for Endosulfan. Data were collected for 5 fish species (1 composite(s) of White Croaker each composed of 5 fish per composite, 1 composite(s) of Kelp Greenling each composed of 3 fish per composite, 1 composite(s) of Lingcod each composed of 5 fish per composite, 1 composite(s) of Cabezon each composed of 5 fish per composite, 1 composite(s) of Gopher Rockfish each composed of 5 fish per composite).

Data Reference:

Habitat, Tissue data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

Guideline Reference:

National Academy of Sciences. Water Quality Criteria 1972. EPA-R3-73-033. Washington, D.C.: U.S. Environmental Protection Agency

Spatial Representation:

Data was collected from 1 station(s) with the station code(s): 30442SCWB.

Temporal Representation:

Environmental Conditions:

QAPP Information:

SWAMP QAPP

QAPP Information Reference(s):

Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program

Line of Evidence (LOE) for Decision ID 113789, Endosulfan	Region 3
Pacific Ocean (Point Ano Nuevo to Soquel Point)

LOE ID:

150496

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:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed SWAMP Sportfish Coastal Zones data for Pacific Ocean (Point Ano Nuevo to Soquel Point) to determine beneficial use support and the results are as follows 0 of the 7 samples exceeded the water quality threshold for Endosulfan. Data were collected for 7 fish species (1 composite(s) of White Croaker each composed of 5 fish per composite, 1 composite(s) of Kelp Greenling each composed of 5 fish per composite, 1 composite(s) of Lingcod each composed of 4 fish per composite, 1 composite(s) of Cabezon each composed of 4 fish per composite, 1 composite(s) of Gopher Rockfish each composed of 3 fish per composite, 1 composite(s) of Black Rockfish each composed of 5 fish per composite, 1 composite(s) of Blue Rockfish each composed of 5 fish per composite).

Data Reference:

Habitat, Tissue data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

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 from 1 station(s) with the station code(s): 30443SCCA.

Temporal Representation:

Environmental Conditions:

QAPP Information:

SWAMP QAPP

QAPP Information Reference(s):

Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program


DECISION ID	113790	Region 3
Pacific Ocean (Point Ano Nuevo to Soquel Point)

Pollutant:	Endrin
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 section 303(d) List under section 3.5 of the Listing Policy. Under section 3.5 a single line of evidence is necessary to assess listing status. Four lines of evidence (LOEs) are available in the administrative record to assess this pollutant. Zero of the twelve fish tissue samples exceed the evaluation guideline applied to protect for the commercial beneficial use, and zero of the twelve fish tissue samples exceed the evaluation guideline applied to protect for the marine aquatic life beneficial use. 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 supported using table 3.1. 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 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. Zero fish tissue samples exceed the evaluation guidelines. 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. 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:

Line of Evidence (LOE) for Decision ID 113790, Endrin	Region 3
Pacific Ocean (Point Ano Nuevo to Soquel Point)

LOE ID:

150592

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:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed SWAMP Sportfish Coastal Zones data for Pacific Ocean (Point Ano Nuevo to Soquel Point) to determine beneficial use support and the results are as follows 0 of the 7 samples exceeded the water quality threshold for Endrin. Data were collected for 7 fish species (1 composite(s) of White Croaker each composed of 5 fish per composite, 1 composite(s) of Kelp Greenling each composed of 5 fish per composite, 1 composite(s) of Lingcod each composed of 4 fish per composite, 1 composite(s) of Cabezon each composed of 4 fish per composite, 1 composite(s) of Gopher Rockfish each composed of 3 fish per composite, 1 composite(s) of Black Rockfish each composed of 5 fish per composite, 1 composite(s) of Blue Rockfish each composed of 5 fish per composite).

Data Reference:

Habitat, Tissue data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

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:

Data was collected from 1 station(s) with the station code(s): 30443SCCA.

Temporal Representation:

Environmental Conditions:

QAPP Information:

SWAMP QAPP

QAPP Information Reference(s):

Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program

Line of Evidence (LOE) for Decision ID 113790, Endrin	Region 3
Pacific Ocean (Point Ano Nuevo to Soquel Point)

LOE ID:

150564

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:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed SWAMP Sportfish Coastal Zones data for Pacific Ocean (Point Ano Nuevo to Soquel Point) to determine beneficial use support and the results are as follows 0 of the 5 samples exceeded the water quality threshold for Endrin. Data were collected for 5 fish species (1 composite(s) of White Croaker each composed of 5 fish per composite, 1 composite(s) of Kelp Greenling each composed of 3 fish per composite, 1 composite(s) of Lingcod each composed of 5 fish per composite, 1 composite(s) of Cabezon each composed of 5 fish per composite, 1 composite(s) of Gopher Rockfish each composed of 5 fish per composite).

Data Reference:

Habitat, Tissue data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

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 from 1 station(s) with the station code(s): 30442SCWB.

Temporal Representation:

Environmental Conditions:

QAPP Information:

SWAMP QAPP

QAPP Information Reference(s):

Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program

Line of Evidence (LOE) for Decision ID 113790, Endrin	Region 3
Pacific Ocean (Point Ano Nuevo to Soquel Point)

LOE ID:

150502

Pollutant:

Endrin

LOE Subgroup:

Pollutant-Tissue

Matrix:

Tissue

Fraction:

Fish fillet

Beneficial Use:

Marine 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 Sportfish Coastal Zones data for Pacific Ocean (Point Ano Nuevo to Soquel Point) to determine beneficial use support and the results are as follows 0 of the 7 samples exceeded the water quality threshold for Endrin. Data were collected for 7 fish species (1 composite(s) of White Croaker each composed of 5 fish per composite, 1 composite(s) of Kelp Greenling each composed of 5 fish per composite, 1 composite(s) of Lingcod each composed of 4 fish per composite, 1 composite(s) of Cabezon each composed of 4 fish per composite, 1 composite(s) of Gopher Rockfish each composed of 3 fish per composite, 1 composite(s) of Black Rockfish each composed of 5 fish per composite, 1 composite(s) of Blue Rockfish each composed of 5 fish per composite).

Data Reference:

Habitat, Tissue data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

National Academy of Science guidelines (NAS 1972) establish a maximum Endrin concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.

Guideline Reference:

National Academy of Sciences. Water Quality Criteria 1972. EPA-R3-73-033. Washington, D.C.: U.S. Environmental Protection Agency

Spatial Representation:

Data was collected from 1 station(s) with the station code(s): 30443SCCA.

Temporal Representation:

Environmental Conditions:

QAPP Information:

SWAMP QAPP

QAPP Information Reference(s):

Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program

Line of Evidence (LOE) for Decision ID 113790, Endrin	Region 3
Pacific Ocean (Point Ano Nuevo to Soquel Point)

LOE ID:

150441

Pollutant:

Endrin

LOE Subgroup:

Pollutant-Tissue

Matrix:

Tissue

Fraction:

Fish fillet

Beneficial Use:

Marine 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 Sportfish Coastal Zones data for Pacific Ocean (Point Ano Nuevo to Soquel Point) to determine beneficial use support and the results are as follows 0 of the 5 samples exceeded the water quality threshold for Endrin. Data were collected for 5 fish species (1 composite(s) of White Croaker each composed of 5 fish per composite, 1 composite(s) of Kelp Greenling each composed of 3 fish per composite, 1 composite(s) of Lingcod each composed of 5 fish per composite, 1 composite(s) of Cabezon each composed of 5 fish per composite, 1 composite(s) of Gopher Rockfish each composed of 5 fish per composite).

Data Reference:

Habitat, Tissue data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

Guideline Reference:

National Academy of Sciences. Water Quality Criteria 1972. EPA-R3-73-033. Washington, D.C.: U.S. Environmental Protection Agency

Spatial Representation:

Data was collected from 1 station(s) with the station code(s): 30442SCWB.

Temporal Representation:

Environmental Conditions:

QAPP Information:

SWAMP QAPP

QAPP Information Reference(s):

Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program


DECISION ID	113791	Region 3
Pacific Ocean (Point Ano Nuevo to Soquel Point)

Pollutant:	Heptachlor
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 section 303(d) List under section 3.5 of the Listing Policy. Under section 3.5 a single line of evidence is necessary to assess listing status. Two lines of evidence (LOEs) are available in the administrative record to assess this pollutant. Zero of the twelve fish tissue samples exceed the evaluation guideline applied to protect for the marine aquatic life beneficial use. 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 supported using table 3.1. 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 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. Zero fish tissue samples exceed the evaluation guidelines. 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. 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:

Line of Evidence (LOE) for Decision ID 113791, Heptachlor	Region 3
Pacific Ocean (Point Ano Nuevo to Soquel Point)

LOE ID:

150848

Pollutant:

Heptachlor

LOE Subgroup:

Pollutant-Tissue

Matrix:

Tissue

Fraction:

Fish fillet

Beneficial Use:

Marine 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 Sportfish Coastal Zones data for Pacific Ocean (Point Ano Nuevo to Soquel Point) to determine beneficial use support and the results are as follows 0 of the 5 samples exceeded the water quality threshold for Heptachlor. Data were collected for 5 fish species (1 composite(s) of White Croaker each composed of 5 fish per composite, 1 composite(s) of Kelp Greenling each composed of 3 fish per composite, 1 composite(s) of Lingcod each composed of 5 fish per composite, 1 composite(s) of Cabezon each composed of 5 fish per composite, 1 composite(s) of Gopher Rockfish each composed of 5 fish per composite).

Data Reference:

Habitat, Tissue data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

National Academy of Science guidelines (NAS 1972) establish a maximum Heptachlor concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.

Guideline Reference:

National Academy of Sciences. Water Quality Criteria 1972. EPA-R3-73-033. Washington, D.C.: U.S. Environmental Protection Agency

Spatial Representation:

Data was collected from 1 station(s) with the station code(s): 30442SCWB.

Temporal Representation:

Environmental Conditions:

QAPP Information:

SWAMP QAPP

QAPP Information Reference(s):

Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program

Line of Evidence (LOE) for Decision ID 113791, Heptachlor	Region 3
Pacific Ocean (Point Ano Nuevo to Soquel Point)

LOE ID:

150795

Pollutant:

Heptachlor

LOE Subgroup:

Pollutant-Tissue

Matrix:

Tissue

Fraction:

Fish fillet

Beneficial Use:

Marine 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 Sportfish Coastal Zones data for Pacific Ocean (Point Ano Nuevo to Soquel Point) to determine beneficial use support and the results are as follows 0 of the 7 samples exceeded the water quality threshold for Heptachlor. Data were collected for 7 fish species (1 composite(s) of White Croaker each composed of 5 fish per composite, 1 composite(s) of Kelp Greenling each composed of 5 fish per composite, 1 composite(s) of Lingcod each composed of 4 fish per composite, 1 composite(s) of Cabezon each composed of 4 fish per composite, 1 composite(s) of Gopher Rockfish each composed of 3 fish per composite, 1 composite(s) of Black Rockfish each composed of 5 fish per composite, 1 composite(s) of Blue Rockfish each composed of 5 fish per composite).

Data Reference:

Habitat, Tissue data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

Guideline Reference:

National Academy of Sciences. Water Quality Criteria 1972. EPA-R3-73-033. Washington, D.C.: U.S. Environmental Protection Agency

Spatial Representation:

Data was collected from 1 station(s) with the station code(s): 30443SCCA.

Temporal Representation:

Environmental Conditions:

QAPP Information:

SWAMP QAPP

QAPP Information Reference(s):

Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program


DECISION ID	113792	Region 3
Pacific Ocean (Point Ano Nuevo to Soquel Point)

Pollutant:	Heptachlor epoxide
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 section 303(d) List under section 3.5 of the Listing Policy. Under section 3.5 a single line of evidence is necessary to assess listing status. Four lines of evidence (LOEs) are available in the administrative record to assess this pollutant. Zero of the nine fish tissue samples exceed the evaluation guideline applied to protect for the marine aquatic life beneficial use. Zero of zero fish tissue samples exceeded the evaluation guideline applied to protect for the commercial and recreational collection beneficial use. Although data was collected for nine tissue composites, all samples had to be thrown out due to quantitation issues. This sample size is insufficient to determine an applicable beneficial use support rating with the power and confidence of the Listing Policy. In accordance with Table 3.1 of the Listing Policy, a minimum of 16 samples is needed to determine if a beneficial use is fully supported and a minimum of two exceedances is needed to determine if beneficial uses are not supported. 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 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. Zero fish tissue samples exceed the evaluation guidelines. 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. 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:

Line of Evidence (LOE) for Decision ID 113792, Heptachlor epoxide	Region 3
Pacific Ocean (Point Ano Nuevo to Soquel Point)

LOE ID:

150732

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:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Waterboard staff assessed SWAMP Sportfish Coastal Zones data for Pacific Ocean (Point Ano Nuevo to Soquel Point) to determine beneficial use support and the results are as follows: Zero of Zero samples exceeded the water quality threshold for Heptachlor Epoxide. Although data was collected for 5 fish species (1 composite(s) of White Croaker each composed of 5 fish per composite, 1 composite(s) of Kelp Greenling each composed of 3 fish per composite, 1 composite(s) of Lingcod each composed of 5 fish per composite, 1 composite(s) of Cabezon each composed of 5 fish per composite, 1 composite(s) of Gopher Rockfish each composed of 5 fish per composite), all 5 sample(s) had to be thrown out due to quantitation issues.

Data Reference:

Habitat, Tissue data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

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:

Data was collected from 1 station(s) with the station code(s): 30442SCWB.

Temporal Representation:

Environmental Conditions:

QAPP Information:

SWAMP QAPP

QAPP Information Reference(s):

Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program

Line of Evidence (LOE) for Decision ID 113792, Heptachlor epoxide	Region 3
Pacific Ocean (Point Ano Nuevo to Soquel Point)

LOE ID:

150867

Pollutant:

Heptachlor epoxide

LOE Subgroup:

Pollutant-Tissue

Matrix:

Tissue

Fraction:

Fish fillet

Beneficial Use:

Marine 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 Sportfish Coastal Zones data for Pacific Ocean (Point Ano Nuevo to Soquel Point) to determine beneficial use support and the results are as follows 0 of the 4 samples exceeded the water quality threshold for Heptachlor Epoxide. Data were collected for 4 fish species (1 composite(s) of White Croaker each composed of 5 fish per composite, 1 composite(s) of Kelp Greenling each composed of 5 fish per composite, 1 composite(s) of Lingcod each composed of 4 fish per composite, 1 composite(s) of Cabezon each composed of 4 fish per composite).

Data Reference:

Habitat, Tissue data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

National Academy of Science guidelines (NAS 1972) establish a maximum Heptachlor Epoxide concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.

Guideline Reference:

National Academy of Sciences. Water Quality Criteria 1972. EPA-R3-73-033. Washington, D.C.: U.S. Environmental Protection Agency

Spatial Representation:

Data was collected from 1 station(s) with the station code(s): 30443SCCA.

Temporal Representation:

Environmental Conditions:

QAPP Information:

SWAMP QAPP

QAPP Information Reference(s):

Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program

Line of Evidence (LOE) for Decision ID 113792, Heptachlor epoxide	Region 3
Pacific Ocean (Point Ano Nuevo to Soquel Point)

LOE ID:

150705

Pollutant:

Heptachlor epoxide

LOE Subgroup:

Pollutant-Tissue

Matrix:

Tissue

Fraction:

Fish fillet

Beneficial Use:

Marine 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 Sportfish Coastal Zones data for Pacific Ocean (Point Ano Nuevo to Soquel Point) to determine beneficial use support and the results are as follows 0 of the 5 samples exceeded the water quality threshold for Heptachlor Epoxide. Data were collected for 5 fish species (1 composite(s) of White Croaker each composed of 5 fish per composite, 1 composite(s) of Kelp Greenling each composed of 3 fish per composite, 1 composite(s) of Lingcod each composed of 5 fish per composite, 1 composite(s) of Cabezon each composed of 5 fish per composite, 1 composite(s) of Gopher Rockfish each composed of 5 fish per composite).

Data Reference:

Habitat, Tissue data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

Guideline Reference:

National Academy of Sciences. Water Quality Criteria 1972. EPA-R3-73-033. Washington, D.C.: U.S. Environmental Protection Agency

Spatial Representation:

Data was collected from 1 station(s) with the station code(s): 30442SCWB.

Temporal Representation:

Environmental Conditions:

QAPP Information:

SWAMP QAPP

QAPP Information Reference(s):

Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program

Line of Evidence (LOE) for Decision ID 113792, Heptachlor epoxide	Region 3
Pacific Ocean (Point Ano Nuevo to Soquel Point)

LOE ID:

150838

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:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Waterboard staff assessed SWAMP Sportfish Coastal Zones data for Pacific Ocean (Point Ano Nuevo to Soquel Point) to determine beneficial use support and the results are as follows: Zero of Zero samples exceeded the water quality threshold for Heptachlor Epoxide. Although data was collected for 4 fish species (1 composite(s) of White Croaker each composed of 5 fish per composite, 1 composite(s) of Kelp Greenling each composed of 5 fish per composite, 1 composite(s) of Lingcod each composed of 4 fish per composite, 1 composite(s) of Cabezon each composed of 4 fish per composite), all 4 sample(s) had to be thrown out due to quantitation issues.

Data Reference:

Habitat, Tissue data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

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:

Data was collected from 1 station(s) with the station code(s): 30443SCCA.

Temporal Representation:

Data for this line of evidence were collected between 2010-06-09 and 2010-06-14. When composited fish were collected over multiple days, the first day of fish collection was used as the sample date in the LOE, both for LOE writing, and for averaging period purposes.

Environmental Conditions:

QAPP Information:

SWAMP QAPP

QAPP Information Reference(s):

Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program


DECISION ID	113793	Region 3
Pacific Ocean (Point Ano Nuevo to Soquel Point)

Pollutant:	Hexachlorobenzene/ HCB
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 section 303(d) List under section 3.5 of the Listing Policy. Under section 3.5 a single line of evidence is necessary to assess listing status. Two lines of evidence (LOEs) are available in the administrative record to assess this pollutant. Zero of the twelve fish tissue samples exceed the evaluation guideline applied to protect for the commercial beneficial use. 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 supported using table 3.1. 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 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. Zero fish tissue samples exceed the evaluation guidelines. 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. 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:

Line of Evidence (LOE) for Decision ID 113793, Hexachlorobenzene/ HCB	Region 3
Pacific Ocean (Point Ano Nuevo to Soquel Point)

LOE ID:

150786

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:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed SWAMP Sportfish Coastal Zones data for Pacific Ocean (Point Ano Nuevo to Soquel Point) to determine beneficial use support and the results are as follows 0 of the 7 samples exceeded the water quality threshold for Hexachlorobenzene. Data were collected for 7 fish species (1 composite(s) of White Croaker each composed of 5 fish per composite, 1 composite(s) of Kelp Greenling each composed of 5 fish per composite, 1 composite(s) of Lingcod each composed of 4 fish per composite, 1 composite(s) of Cabezon each composed of 4 fish per composite, 1 composite(s) of Gopher Rockfish each composed of 3 fish per composite, 1 composite(s) of Black Rockfish each composed of 5 fish per composite, 1 composite(s) of Blue Rockfish each composed of 5 fish per composite).

Data Reference:

Habitat, Tissue data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

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:

Data was collected from 1 station(s) with the station code(s): 30443SCCA.

Temporal Representation:

Environmental Conditions:

QAPP Information:

SWAMP QAPP

QAPP Information Reference(s):

Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program

Line of Evidence (LOE) for Decision ID 113793, Hexachlorobenzene/ HCB	Region 3
Pacific Ocean (Point Ano Nuevo to Soquel Point)

LOE ID:

150773

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:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed SWAMP Sportfish Coastal Zones data for Pacific Ocean (Point Ano Nuevo to Soquel Point) to determine beneficial use support and the results are as follows 0 of the 5 samples exceeded the water quality threshold for Hexachlorobenzene. Data were collected for 5 fish species (1 composite(s) of White Croaker each composed of 5 fish per composite, 1 composite(s) of Kelp Greenling each composed of 3 fish per composite, 1 composite(s) of Lingcod each composed of 5 fish per composite, 1 composite(s) of Cabezon each composed of 5 fish per composite, 1 composite(s) of Gopher Rockfish each composed of 5 fish per composite).

Data Reference:

Habitat, Tissue data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

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 from 1 station(s) with the station code(s): 30442SCWB.

Temporal Representation:

Environmental Conditions:

QAPP Information:

SWAMP QAPP

QAPP Information Reference(s):

Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program


DECISION ID	113794	Region 3
Pacific Ocean (Point Ano Nuevo to Soquel Point)

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:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	This pollutant is being considered for placement on the section 303(d) List under section 3.5 of the Listing Policy. Under section 3.5 a single line of evidence is necessary to assess listing status. Four lines of evidence (LOEs) are available in the administrative record to assess this pollutant. Zero of the twelve fish tissue samples exceed the evaluation guideline applied to protect for the commercial beneficial use, and zero of the twelve fish tissue samples exceed the evaluation guideline applied to protect for the marine aquatic life beneficial use. 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 supported using table 3.1. 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 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. Zero fish tissue samples exceed the evaluation guidelines. 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. 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:

Line of Evidence (LOE) for Decision ID 113794, Lindane/gamma Hexachlorocyclohexane (gamma-HCH)	Region 3
Pacific Ocean (Point Ano Nuevo to Soquel Point)

LOE ID:

150804

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:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed SWAMP Sportfish Coastal Zones data for Pacific Ocean (Point Ano Nuevo to Soquel Point) to determine beneficial use support and the results are as follows 0 of the 7 samples exceeded the water quality threshold for HCH, gamma-. Data were collected for 7 fish species (1 composite(s) of White Croaker each composed of 5 fish per composite, 1 composite(s) of Kelp Greenling each composed of 5 fish per composite, 1 composite(s) of Lingcod each composed of 4 fish per composite, 1 composite(s) of Cabezon each composed of 4 fish per composite, 1 composite(s) of Gopher Rockfish each composed of 3 fish per composite, 1 composite(s) of Black Rockfish each composed of 5 fish per composite, 1 composite(s) of Blue Rockfish each composed of 5 fish per composite).

Data Reference:

Habitat, Tissue data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

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:

Data was collected from 1 station(s) with the station code(s): 30443SCCA.

Temporal Representation:

Environmental Conditions:

QAPP Information:

SWAMP QAPP

QAPP Information Reference(s):

Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program

Line of Evidence (LOE) for Decision ID 113794, Lindane/gamma Hexachlorocyclohexane (gamma-HCH)	Region 3
Pacific Ocean (Point Ano Nuevo to Soquel Point)

LOE ID:

150831

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:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed SWAMP Sportfish Coastal Zones data for Pacific Ocean (Point Ano Nuevo to Soquel Point) to determine beneficial use support and the results are as follows 0 of the 5 samples exceeded the water quality threshold for HCH, gamma-. Data were collected for 5 fish species (1 composite(s) of White Croaker each composed of 5 fish per composite, 1 composite(s) of Kelp Greenling each composed of 3 fish per composite, 1 composite(s) of Lingcod each composed of 5 fish per composite, 1 composite(s) of Cabezon each composed of 5 fish per composite, 1 composite(s) of Gopher Rockfish each composed of 5 fish per composite).

Data Reference:

Habitat, Tissue data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

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 from 1 station(s) with the station code(s): 30442SCWB.

Temporal Representation:

Environmental Conditions:

QAPP Information:

SWAMP QAPP

QAPP Information Reference(s):

Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program

Line of Evidence (LOE) for Decision ID 113794, Lindane/gamma Hexachlorocyclohexane (gamma-HCH)	Region 3
Pacific Ocean (Point Ano Nuevo to Soquel Point)

LOE ID:

150761

Pollutant:

Lindane/gamma Hexachlorocyclohexane (gamma-HCH)

LOE Subgroup:

Pollutant-Tissue

Matrix:

Tissue

Fraction:

Fish fillet

Beneficial Use:

Marine 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 Sportfish Coastal Zones data for Pacific Ocean (Point Ano Nuevo to Soquel Point) to determine beneficial use support and the results are as follows 0 of the 7 samples exceeded the water quality threshold for HCH, gamma-. Data were collected for 7 fish species (1 composite(s) of White Croaker each composed of 5 fish per composite, 1 composite(s) of Kelp Greenling each composed of 5 fish per composite, 1 composite(s) of Lingcod each composed of 4 fish per composite, 1 composite(s) of Cabezon each composed of 4 fish per composite, 1 composite(s) of Gopher Rockfish each composed of 3 fish per composite, 1 composite(s) of Black Rockfish each composed of 5 fish per composite, 1 composite(s) of Blue Rockfish each composed of 5 fish per composite).

Data Reference:

Habitat, Tissue data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

National Academy of Science guidelines (NAS 1972) establish a maximum Lindane concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.

Guideline Reference:

National Academy of Sciences. Water Quality Criteria 1972. EPA-R3-73-033. Washington, D.C.: U.S. Environmental Protection Agency

Spatial Representation:

Data was collected from 1 station(s) with the station code(s): 30443SCCA.

Temporal Representation:

Environmental Conditions:

QAPP Information:

SWAMP QAPP

QAPP Information Reference(s):

Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program

Line of Evidence (LOE) for Decision ID 113794, Lindane/gamma Hexachlorocyclohexane (gamma-HCH)	Region 3
Pacific Ocean (Point Ano Nuevo to Soquel Point)

LOE ID:

150832

Pollutant:

Lindane/gamma Hexachlorocyclohexane (gamma-HCH)

LOE Subgroup:

Pollutant-Tissue

Matrix:

Tissue

Fraction:

Fish fillet

Beneficial Use:

Marine 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 Sportfish Coastal Zones data for Pacific Ocean (Point Ano Nuevo to Soquel Point) to determine beneficial use support and the results are as follows 0 of the 5 samples exceeded the water quality threshold for HCH, gamma-. Data were collected for 5 fish species (1 composite(s) of White Croaker each composed of 5 fish per composite, 1 composite(s) of Kelp Greenling each composed of 3 fish per composite, 1 composite(s) of Lingcod each composed of 5 fish per composite, 1 composite(s) of Cabezon each composed of 5 fish per composite, 1 composite(s) of Gopher Rockfish each composed of 5 fish per composite).

Data Reference:

Habitat, Tissue data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

Guideline Reference:

National Academy of Sciences. Water Quality Criteria 1972. EPA-R3-73-033. Washington, D.C.: U.S. Environmental Protection Agency

Spatial Representation:

Data was collected from 1 station(s) with the station code(s): 30442SCWB.

Temporal Representation:

Environmental Conditions:

QAPP Information:

SWAMP QAPP

QAPP Information Reference(s):

Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program


DECISION ID	131331	Region 3
Pacific Ocean (Point Ano Nuevo to Soquel Point)

Pollutant:	Mercury
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 section 303(d) list under section 3.5 of the Listing Policy. Under section 3.5 a single line of evidence is necessary to assess listing status. 6 lines of evidence are available in the administrative record to assess the pollutant. WILD beneficial use: LOE 225692: 0 of 1 samples exceed the mercury objective and consist of 18 trophic level 4 fish. LOE 225704: 1 of 1 samples exceed the mercury objective and consist of 12 trophic level 4 fish. MAR beneficial use: LOE 225699: 1 of 1 samples exceed the mercury objective and consist of 12 trophic level 4 fish. LOE 225735: 0 of 1 samples exceed the mercury objective and consist of 18 trophic level 4 fish. COMM beneficial use: LOE 225791: 0 of 1 samples exceed the mercury objective and consist of 18 trophic level 4 fish. LOE 225832: 1 of 1 samples exceed the mercury objective and consist of 12 trophic level 4 fish. 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 2 samples exceed the objective for the WILD beneficial use. 1 of 2 samples exceed the objective for the MAR beneficial use. 1 of 2 samples exceed the objective for the COMM beneficial use. 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. 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:	This decision was made by SWRCB staff.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:

Line of Evidence (LOE) for Decision ID 131331, Mercury	Region 3
Pacific Ocean (Point Ano Nuevo to Soquel Point)

LOE ID:

225832

Pollutant:

Mercury

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:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed SWAMP Sportfish Coastal Zones data for Pacific Ocean (Point Ano Nuevo to Soquel Point) to determine beneficial use support and the results are as follows: 1 of the 1 samples exceeded the water quality threshold for Mercury. This LOE contains data only for trophic level 4 fish. The concentration of Mercury in fish collected within the same calendar year, for the same trophic level were averaged into a single sample for comparison with the objective. A total of 12 fish were aggregated into 1 annual averages, which consisted of 2 fish species (1 composite(s) of White Croaker each composed of 5 fish per composite, 7 composite(s) of Gopher Rockfish each composed of 1 fish per composite). Of these annual averages, 1 average(s), (Year(s): 2010) exceeded the objective.

Data Reference:

Habitat, Tissue data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

The Statewide Sport Fish Water Quality Objective for the protection of the Commercial and Sport Fishing beneficial comes from the Statewide Water Quality Control Plan for Inland Surface Waters, Enclosed Bays, and Estuaries of California, and is 0.2 mg/Kg wet weight skinless fillet samples of trophic level 3, or trophic level 4 fish (whichever is highest in the water body) over a one year averaging period. Trophic levels of applicable fish are defined in, but not limited to those in Attachment C of the Final Regulatory Language document (Appendix A) of State Water Resources Control Board Resolution No. 2017-0027.

Guideline Reference:

Inland Surface Waters, Enclosed Bays, and Estuaries Plan. Part 1: Trash Provisions; Part 2: Tribal Subsistence Beneficial Uses and Mercury Provisions; Part 3: Bacteria Provisions and Variance Policy

Spatial Representation:

Data was collected from 1 station(s) with the station code(s): 30442SCWB.

Temporal Representation:

Environmental Conditions:

QAPP Information:

SWAMP QAPP

QAPP Information Reference(s):

Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program

Line of Evidence (LOE) for Decision ID 131331, Mercury	Region 3
Pacific Ocean (Point Ano Nuevo to Soquel Point)

LOE ID:

225791

Pollutant:

Mercury

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:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed SWAMP Sportfish Coastal Zones data for Pacific Ocean (Point Ano Nuevo to Soquel Point) to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the water quality threshold for Mercury. This LOE contains data only for trophic level 4 fish. The concentration of Mercury in fish collected within the same calendar year, for the same trophic level were averaged into a single sample for comparison with the objective. A total of 18 fish were aggregated into 1 annual averages, which consisted of 3 fish species (1 composite(s) of White Croaker each composed of 5 fish per composite, 3 composite(s) of Gopher Rockfish each composed of 1 fish per composite, 10 composite(s) of Black Rockfish each composed of 1 fish per composite).

Data Reference:

Habitat, Tissue data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

Guideline Reference:

Inland Surface Waters, Enclosed Bays, and Estuaries Plan. Part 1: Trash Provisions; Part 2: Tribal Subsistence Beneficial Uses and Mercury Provisions; Part 3: Bacteria Provisions and Variance Policy

Spatial Representation:

Data was collected from 1 station(s) with the station code(s): 30443SCCA.

Temporal Representation:

Environmental Conditions:

QAPP Information:

SWAMP QAPP

QAPP Information Reference(s):

Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program

Line of Evidence (LOE) for Decision ID 131331, Mercury	Region 3
Pacific Ocean (Point Ano Nuevo to Soquel Point)

LOE ID:

225735

Pollutant:

Mercury

LOE Subgroup:

Pollutant-Tissue

Matrix:

Tissue

Fraction:

Fish fillet

Beneficial Use:

Marine 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 Sportfish Coastal Zones data for Pacific Ocean (Point Ano Nuevo to Soquel Point) to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the water quality threshold for Mercury. This LOE contains data only for trophic level 4 fish. The concentration of Mercury in fish collected within the same calendar year, for the same trophic level were averaged into a single sample for comparison with the objective. A total of 18 fish were aggregated into 1 annual averages, which consisted of 3 fish species (1 composite(s) of White Croaker each composed of 5 fish per composite, 3 composite(s) of Gopher Rockfish each composed of 1 fish per composite, 10 composite(s) of Black Rockfish each composed of 1 fish per composite).

Data Reference:

Habitat, Tissue data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

The Statewide Sport Fish Water Quality Objective for the protection of Marine Habitat comes from the Statewide Water Quality Control Plan for Inland Surface Waters, Enclosed Bays, and Estuaries of California, and is 0.2 mg/Kg wet weight skinless fillet samples of trophic level 3, or trophic level 4 fish (whichever is highest in the water body) over a one year averaging period. If trophic level 3 fish are used in the assessment then the Prey Fish Water Quality Objective must also be used to determine that the Sport Fish Objective is being met. Trophic levels of applicable fish are defined in, but not limited to those in Attachment C of the Final Regulatory Language document (Appendix A) of State Water Resources Control Board Resolution No. 2017-0027.

Guideline Reference:

Inland Surface Waters, Enclosed Bays, and Estuaries Plan. Part 1: Trash Provisions; Part 2: Tribal Subsistence Beneficial Uses and Mercury Provisions; Part 3: Bacteria Provisions and Variance Policy

Spatial Representation:

Data was collected from 1 station(s) with the station code(s): 30443SCCA.

Temporal Representation:

Environmental Conditions:

QAPP Information:

SWAMP QAPP

QAPP Information Reference(s):

Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program

Line of Evidence (LOE) for Decision ID 131331, Mercury	Region 3
Pacific Ocean (Point Ano Nuevo to Soquel Point)

LOE ID:

225704

Pollutant:

Mercury

LOE Subgroup:

Pollutant-Tissue

Matrix:

Tissue

Fraction:

Fish fillet

Beneficial Use:

Wildlife 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 Sportfish Coastal Zones data for Pacific Ocean (Point Ano Nuevo to Soquel Point) to determine beneficial use support and the results are as follows: 1 of the 1 samples exceeded the water quality threshold for Mercury. This LOE contains data only for trophic level 4 fish. The concentration of Mercury in fish collected within the same calendar year, for the same trophic level were averaged into a single sample for comparison with the objective. A total of 12 fish were aggregated into 1 annual averages, which consisted of 2 fish species (1 composite(s) of White Croaker each composed of 5 fish per composite, 7 composite(s) of Gopher Rockfish each composed of 1 fish per composite). Of these annual averages, 1 average(s), (Year(s): 2010) exceeded the objective.

Data Reference:

Habitat, Tissue data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

The Statewide Sport Fish Water Quality Objective for the protection of Wildlife Habitat comes from the Statewide Water Quality Control Plan for Inland Surface Waters, Enclosed Bays, and Estuaries of California, and is 0.2 mg/Kg wet weight skinless fillet samples of trophic level 3, or trophic level 4 fish (whichever is highest in the water body) over a one year averaging period. If trophic level 3 fish are used in the assessment then the Prey Fish Water Quality Objective must also be used to determine that the Sport Fish Objective is being met. Trophic levels of applicable fish are defined in, but not limited to those in Attachment C of the Final Regulatory Language document (Appendix A) of State Water Resources Control Board Resolution No. 2017-0027.

Guideline Reference:

Inland Surface Waters, Enclosed Bays, and Estuaries Plan. Part 1: Trash Provisions; Part 2: Tribal Subsistence Beneficial Uses and Mercury Provisions; Part 3: Bacteria Provisions and Variance Policy

Spatial Representation:

Data was collected from 1 station(s) with the station code(s): 30442SCWB.

Temporal Representation:

Environmental Conditions:

QAPP Information:

SWAMP QAPP

QAPP Information Reference(s):

Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program

Line of Evidence (LOE) for Decision ID 131331, Mercury	Region 3
Pacific Ocean (Point Ano Nuevo to Soquel Point)

LOE ID:

225699

Pollutant:

Mercury

LOE Subgroup:

Pollutant-Tissue

Matrix:

Tissue

Fraction:

Fish fillet

Beneficial Use:

Marine 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 Sportfish Coastal Zones data for Pacific Ocean (Point Ano Nuevo to Soquel Point) to determine beneficial use support and the results are as follows: 1 of the 1 samples exceeded the water quality threshold for Mercury. This LOE contains data only for trophic level 4 fish. The concentration of Mercury in fish collected within the same calendar year, for the same trophic level were averaged into a single sample for comparison with the objective. A total of 12 fish were aggregated into 1 annual averages, which consisted of 2 fish species (1 composite(s) of White Croaker each composed of 5 fish per composite, 7 composite(s) of Gopher Rockfish each composed of 1 fish per composite). Of these annual averages, 1 average(s), (Year(s): 2010) exceeded the objective.

Data Reference:

Habitat, Tissue data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

Guideline Reference:

Inland Surface Waters, Enclosed Bays, and Estuaries Plan. Part 1: Trash Provisions; Part 2: Tribal Subsistence Beneficial Uses and Mercury Provisions; Part 3: Bacteria Provisions and Variance Policy

Spatial Representation:

Data was collected from 1 station(s) with the station code(s): 30442SCWB.

Temporal Representation:

Environmental Conditions:

QAPP Information:

SWAMP QAPP

QAPP Information Reference(s):

Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program

Line of Evidence (LOE) for Decision ID 131331, Mercury	Region 3
Pacific Ocean (Point Ano Nuevo to Soquel Point)

LOE ID:

225692

Pollutant:

Mercury

LOE Subgroup:

Pollutant-Tissue

Matrix:

Tissue

Fraction:

Fish fillet

Beneficial Use:

Wildlife 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 Sportfish Coastal Zones data for Pacific Ocean (Point Ano Nuevo to Soquel Point) to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the water quality threshold for Mercury. This LOE contains data only for trophic level 4 fish. The concentration of Mercury in fish collected within the same calendar year, for the same trophic level were averaged into a single sample for comparison with the objective. A total of 18 fish were aggregated into 1 annual averages, which consisted of 3 fish species (1 composite(s) of White Croaker each composed of 5 fish per composite, 3 composite(s) of Gopher Rockfish each composed of 1 fish per composite, 10 composite(s) of Black Rockfish each composed of 1 fish per composite).

Data Reference:

Habitat, Tissue data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

Guideline Reference:

Inland Surface Waters, Enclosed Bays, and Estuaries Plan. Part 1: Trash Provisions; Part 2: Tribal Subsistence Beneficial Uses and Mercury Provisions; Part 3: Bacteria Provisions and Variance Policy

Spatial Representation:

Data was collected from 1 station(s) with the station code(s): 30443SCCA.

Temporal Representation:

Environmental Conditions:

QAPP Information:

SWAMP QAPP

QAPP Information Reference(s):

Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program


DECISION ID	113795	Region 3
Pacific Ocean (Point Ano Nuevo to Soquel Point)

Pollutant:	Mirex
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 113795, Mirex	Region 3
Pacific Ocean (Point Ano Nuevo to Soquel Point)

LOE ID:

150721

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:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Waterboard staff assessed SWAMP Sportfish Coastal Zones data for Pacific Ocean (Point Ano Nuevo to Soquel Point) to determine beneficial use support and the results are as follows: Zero of Zero samples exceeded the water quality threshold for Mirex. Although data was collected for 7 fish species (1 composite(s) of White Croaker each composed of 5 fish per composite, 1 composite(s) of Kelp Greenling each composed of 5 fish per composite, 1 composite(s) of Lingcod each composed of 4 fish per composite, 1 composite(s) of Cabezon each composed of 4 fish per composite, 1 composite(s) of Gopher Rockfish each composed of 3 fish per composite, 1 composite(s) of Black Rockfish each composed of 5 fish per composite, 1 composite(s) of Blue Rockfish each composed of 5 fish per composite), all 7 sample(s) had to be thrown out due to quantitation issues.

Data Reference:

Habitat, Tissue data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

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. 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, 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:

Data was collected from 1 station(s) with the station code(s): 30443SCCA.

Temporal Representation:

Environmental Conditions:

QAPP Information:

SWAMP QAPP

QAPP Information Reference(s):

Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program

Line of Evidence (LOE) for Decision ID 113795, Mirex	Region 3
Pacific Ocean (Point Ano Nuevo to Soquel Point)

LOE ID:

150682

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:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Waterboard staff assessed SWAMP Sportfish Coastal Zones data for Pacific Ocean (Point Ano Nuevo to Soquel Point) to determine beneficial use support and the results are as follows: Zero of Zero samples exceeded the water quality threshold for Mirex. Although data was collected for 5 fish species (1 composite(s) of White Croaker each composed of 5 fish per composite, 1 composite(s) of Kelp Greenling each composed of 3 fish per composite, 1 composite(s) of Lingcod each composed of 5 fish per composite, 1 composite(s) of Cabezon each composed of 5 fish per composite, 1 composite(s) of Gopher Rockfish each composed of 5 fish per composite), all 5 sample(s) had to be thrown out due to quantitation issues.

Data Reference:

Habitat, Tissue data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

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:

Data was collected from 1 station(s) with the station code(s): 30442SCWB.

Temporal Representation:

Environmental Conditions:

QAPP Information:

SWAMP QAPP

QAPP Information Reference(s):

Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program


DECISION ID	113796	Region 3
Pacific Ocean (Point Ano Nuevo to Soquel Point)

Pollutant:	PCBs (Polychlorinated biphenyls)
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 section 303(d) List under section 3.1 and section 3.5 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status. Under section 3.5 at least two lines of evidence are necessary to assess listing status for pollutants in tissue. Four lines of evidence are available in the administrative record to assess this pollutant. Zero of two sediment samples exceed the PCBs evaluation guideline set to protect for Shellfish Harvesting and commercial or recreational collection of fish, shellfish, or organisms beneficial uses. 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. 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. Zero of the 2 sediment samples exceed the evaluation guidelines 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. 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:

Line of Evidence (LOE) for Decision ID 113796, PCBs (Polychlorinated biphenyls)	Region 3
Pacific Ocean (Point Ano Nuevo to Soquel Point)

LOE ID:

150983

Pollutant:

PCBs (Polychlorinated biphenyls)

LOE Subgroup:

Pollutant-Tissue

Matrix:

Tissue

Fraction:

Shellfish

Beneficial Use:

Shellfish Harvesting

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed RWB3 CCLEAN data for Pacific Ocean (Point Ano Nuevo to Soquel Point) to determine beneficial use support and the results are as follows 0 of the 1 samples exceeded the water quality threshold for PCBs (Polychlorinated biphenyls). Data were collected for 1 fish species (2 composite(s) of California Mussel each composed of 45 fish per composite).

Data Reference:

Tissue, Water or the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

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 from 1 station(s) with the station code(s): Scotcre1.

Temporal Representation:

Data for this line of evidence were collected between 2007-03-18 and 2007-03-18. When composited fish were collected over multiple days, the first day of fish collection was used as the sample date in the LOE, both for LOE writing, and for averaging period purposes.

Environmental Conditions:

QAPP Information:

Applied Marine Sciences. 2019. Central Coast Long-Term Environmental Assessment Network.

QAPP Information Reference(s):

Central Coast Long-Term Environmental Assessment Network

Line of Evidence (LOE) for Decision ID 113796, PCBs (Polychlorinated biphenyls)	Region 3
Pacific Ocean (Point Ano Nuevo to Soquel Point)

LOE ID:

150982

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:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Data Reference:

Tissue, Water or the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

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 from 1 station(s) with the station code(s): Scotcre1.

Temporal Representation:

Environmental Conditions:

QAPP Information:

Applied Marine Sciences. 2019. Central Coast Long-Term Environmental Assessment Network.

QAPP Information Reference(s):

Central Coast Long-Term Environmental Assessment Network

Line of Evidence (LOE) for Decision ID 113796, PCBs (Polychlorinated biphenyls)	Region 3
Pacific Ocean (Point Ano Nuevo to Soquel Point)

LOE ID:

150995

Pollutant:

PCBs (Polychlorinated biphenyls)

LOE Subgroup:

Pollutant-Tissue

Matrix:

Tissue

Fraction:

Shellfish

Beneficial Use:

Shellfish Harvesting

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed RWB3 CCLEAN data for Pacific Ocean (Point Ano Nuevo to Soquel Point) to determine beneficial use support and the results are as follows 0 of the 1 samples exceeded the water quality threshold for PCBs (Polychlorinated biphenyls). Data were collected for 1 fish species (1 composite(s) of California Mussel each composed of 45 fish per composite).

Data Reference:

Tissue, Water or the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

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 from 1 station(s) with the station code(s): Lagucre1.

Temporal Representation:

Environmental Conditions:

QAPP Information:

Applied Marine Sciences. 2019. Central Coast Long-Term Environmental Assessment Network.

QAPP Information Reference(s):

Central Coast Long-Term Environmental Assessment Network

Line of Evidence (LOE) for Decision ID 113796, PCBs (Polychlorinated biphenyls)	Region 3
Pacific Ocean (Point Ano Nuevo to Soquel Point)

LOE ID:

150970

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:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed RWB3 CCLEAN data for Pacific Ocean (Point Ano Nuevo to Soquel Point) to determine beneficial use support and the results are as follows 0 of the 1 samples exceeded the water quality threshold for PCBs (Polychlorinated biphenyls). Data were collected for 1 fish species (1 composite(s) of California Mussel each composed of 45 fish per composite).

Data Reference:

Tissue, Water or the 2020/2022 integrated report in Region 3.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

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 from 1 station(s) with the station code(s): Lagucre1.

Temporal Representation:

Environmental Conditions:

QAPP Information:

Applied Marine Sciences. 2019. Central Coast Long-Term Environmental Assessment Network.

QAPP Information Reference(s):

Central Coast Long-Term Environmental Assessment Network


DECISION ID	113797	Region 3
Pacific Ocean (Point Ano Nuevo to Soquel Point)

Pollutant:	Selenium
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 Clean Water Act (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. A total of two lines of evidence are available in the administrative record to assess this pollutant. A total of zero of 13 samples exceed the evaluation guideline for the commercial or recreational collection of fish, shellfish, or organisms beneficial use. These data are insufficient to determine the applicable beneficial use support rating with the power and confidence required by the Listing Policy. After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed 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. A total of zero of 13 samples exceed the evaluation guideline for the commercial or recreational collection of fish, shellfish, or organisms beneficial use. 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. 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:

Line of Evidence (LOE) for Decision ID 113797, Selenium	Region 3
Pacific Ocean (Point Ano Nuevo to Soquel Point)

LOE ID:

150974

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:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed SWAMP Sportfish Coastal Zones data for Pacific Ocean (Point Ano Nuevo to Soquel Point) to determine beneficial use support and the results are as follows 0 of the 6 samples exceeded the water quality threshold for Selenium. Data were collected for 6 fish species (1 composite(s) of Barred Surfperch each composed of 5 fish per composite, 1 composite(s) of White Croaker each composed of 5 fish per composite, 1 composite(s) of Kelp Greenling each composed of 3 fish per composite, 1 composite(s) of Lingcod each composed of 5 fish per composite, 1 composite(s) of Cabezon each composed of 5 fish per composite, 1 composite(s) of Gopher Rockfish each composed of 5 fish per composite).

Data Reference:

Habitat, Tissue data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

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:

Data was collected from 1 station(s) with the station code(s): 30442SCWB.

Temporal Representation:

Data for this line of evidence were collected between 2010-06-08 and 2018-08-14. When composited fish were collected over multiple days, the first day of fish collection was used as the sample date in the LOE, both for LOE writing, and for averaging period purposes.

Environmental Conditions:

QAPP Information:

SWAMP QAPP

QAPP Information Reference(s):

Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program

Line of Evidence (LOE) for Decision ID 113797, Selenium	Region 3
Pacific Ocean (Point Ano Nuevo to Soquel Point)

LOE ID:

150986

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:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed SWAMP Sportfish Coastal Zones data for Pacific Ocean (Point Ano Nuevo to Soquel Point) to determine beneficial use support and the results are as follows 0 of the 7 samples exceeded the water quality threshold for Selenium. Data were collected for 7 fish species (1 composite(s) of White Croaker each composed of 5 fish per composite, 1 composite(s) of Kelp Greenling each composed of 5 fish per composite, 1 composite(s) of Lingcod each composed of 4 fish per composite, 1 composite(s) of Cabezon each composed of 4 fish per composite, 1 composite(s) of Gopher Rockfish each composed of 3 fish per composite, 1 composite(s) of Black Rockfish each composed of 5 fish per composite, 1 composite(s) of Blue Rockfish each composed of 5 fish per composite).

Data Reference:

Habitat, Tissue data for the 2020/2022 integrated report in Region 3.

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

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 from 1 station(s) with the station code(s): 30443SCCA.

Temporal Representation:

Environmental Conditions:

QAPP Information:

SWAMP QAPP

QAPP Information Reference(s):

Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program


DECISION ID	85434	Region 3
Pacific Ocean (Point Ano Nuevo to Soquel Point)

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)(2016)
Revision Status	Original
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	This pollutant is being considered for placement on the 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. One line of evidence is available in the administrative record to assess this pollutant. Zero out of three water samples exceeded the evaluation guideline applied to protect the marine habitat beneficial use. 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 supported using table 3.1. 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 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. Zero out of three water samples exceeded the evaluation guideline applied to protect the marine habitat beneficial use. 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. 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 85434, Copper	Region 3
Pacific Ocean (Point Ano Nuevo to Soquel Point)

LOE ID:

56030

Pollutant:

Copper

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:

None of the three samples exceeded the 6-month median concentration of 3 ug/L for dissolved copper in saltwater.

Data Reference:

Data for Various Pollutants in California Marinas, 2006.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

California's Ocean Plan Table B lists 6-month median concentration of 3 ug/L for dissolved copper to protect aquatic life in marine waters.

Objective/Criterion Reference:

California Ocean Plan Water Quality Control Plan Ocean Waters of California 2009

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

A total of four grab samples were collected from outside the Santa Cruz marina basin (Sites 5, 6, 7 & 8), these were averaged per sample event.

Temporal Representation:

Samples were collected on three separate sampling events during the dry season (July - October) in 2006.

Environmental Conditions:

Samples were collected during the dry season only.

QAPP Information:

Samples were collected and analyzed in accordance with a Quality Assurance Project Plan that was prepared per State Water Resources Control Board Agreement No. 05-218-250 California Department of Pesticide Regulation, Sacramento, CA. (Available online at http://www.cdpr.ca.gov/docs/emon/surfwtr/protocols/qapp_study236.pdf)

QAPP Information Reference(s):


DECISION ID	86742	Region 3
Pacific Ocean (Point Ano Nuevo to Soquel Point)

Pollutant:	Oxygen, Dissolved
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 3.2 of the Listing Policy. Under section 3.2 a single line of evidence is necessary to assess listing status. One line of evidence is available in the administrative record to assess this pollutant. Zero of the 12 samples exceed the water quality objective for protection of Marine Habitat. 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 26 samples is needed to determine if a beneficial use is supported and a minimum of five exceedances is needed to determine if beneficial uses are not supported using table 3.2. Therefore, the use support rating is set to 'insufficient information'. 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. Zero of the 12 samples exceed the water quality 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. 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 86742, Oxygen, Dissolved	Region 3
Pacific Ocean (Point Ano Nuevo to Soquel Point)

LOE ID:

56031

Pollutant:

Oxygen, Dissolved

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:

Numeric data generated from 12 minimum of Dissolved Oxygen concentrations had 0 exceedences.

Data Reference:

Data for Various Pollutants in California Marinas, 2006.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

...the following objectives shall also apply to all ocean waters, including Monterey and Carmel Bays: ...nor shall the minimum dissolved oxygen concentration be reducedbelow 5.0 mg/L at any time.

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Samples were collected from the following stations: Santa Cruz Harbor 5.1 Santa Cruz Harbor 5.2 Santa Cruz Harbor 5.3 Santa Cruz Harbor 6.1 Santa Cruz Harbor 6.2 Santa Cruz Harbor 6.3 Santa Cruz Harbor 7.1 Santa Cruz Harbor 7.2 Santa Cruz Harbor 7.3 Santa Cruz Harbor 8.1 Santa Cruz Harbor 8.2 Santa Cruz Harbor 8.3

Temporal Representation:

Samples were collected once a month from August 2006 to October 2006.

Environmental Conditions:

QAPP Information:

QAPP Information Reference(s):


DECISION ID	85905	Region 3
Pacific Ocean (Point Ano Nuevo to Soquel Point)

Pollutant:	Zinc
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 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. One line of evidence is available in the administrative record to assess this pollutant. Zero out of three water samples exceeded the evaluation guideline for the marine habitat beneficial use. 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 supported using table 3.1. 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 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. Zero out of three water samples exceeded the evaluation guideline. 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. 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 85905, Zinc	Region 3
Pacific Ocean (Point Ano Nuevo to Soquel Point)

LOE ID:

56033

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:

None of the three samples exceeded the 6-month median concentration of 20 ug/L for dissolved zinc in saltwater.

Data Reference:

Data for Various Pollutants in California Marinas, 2006.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

California's Ocean Plan Table B lists 6-month median concentration of 20 ug/L for dissolved zinc in saltwater to protect aquatic life in marine waters.

Objective/Criterion Reference:

California Ocean Plan Water Quality Control Plan Ocean Waters of California 2009

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

A total of four grab samples were collected from outside the Santa Cruz marina basin (Sites 5, 6, 7, & 8), these were averaged per sample event.

Temporal Representation:

Samples were collected on three separate sampling events during the dry season (July - October) in 2006.

Environmental Conditions:

Samples were collected during the dry season only.

QAPP Information:

QAPP Information Reference(s):


DECISION ID	86743	Region 3
Pacific Ocean (Point Ano Nuevo to Soquel Point)

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)(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 3.2 of the Listing Policy. Under section 3.2 a single line of evidence is necessary to assess listing status. One line of evidence is available in the administrative record to assess this pollutant. Zero of the 12 samples exceed the water quality objective for protection of Marine Habitat. 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 26 samples is needed to determine if a beneficial use is supported and a minimum of five exceedances is needed to determine if beneficial uses are not supported using table 3.2. Therefore, the use support rating is set to 'insufficient information'. 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. Zero of the 12 samples exceed the water quality 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. 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 86743, pH	Region 3
Pacific Ocean (Point Ano Nuevo to Soquel Point)

LOE ID:

56032

Pollutant:

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:

Numeric data generated from 12 minimums and maximums had no exceedences.

Data Reference:

Data for Various Pollutants in California Marinas, 2006.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

For waters not mentioned by a specific beneficial use, the pH value shall not be depressed below 7.0 or raised above 8.5.

Objective/Criterion Reference:

Water Quality Control Plan for the Central Coastal Basin

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Temporal Representation:

Samples were collected once a month from August 2006 to October 2006.

Environmental Conditions:

QAPP Information:

QAPP Information Reference(s):