Final California 2010 Integrated Report (303(d) List/305(b) Report)

Supporting Information

Regional Board 4 - Los Angeles Region

Water Body Name:	San Pedro Bay Near/Off Shore Zones
Water Body ID:	CAB4051200019990921151740
Water Body Type:	Bay & Harbor


DECISION ID	7290	Region 4
San Pedro Bay Near/Off Shore Zones

Pollutant:	Chromium (sediment)
Final Listing Decision:	Delist from 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	List on 303(d) list (TMDL required list)(2006)
Revision Status	Revised
Reason for Delisting:	Applicable WQS attained; reason for recovery unspecified
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	This pollutant is being considered for removal from the section 303(d) list under section 4.1 and 4.6 of the Listing Policy. Under this section a single line of evidence is necessary to assess listing status. Four lines of evidence are available in the administrative record to assess this pollutant. Line of Evidence (LOE) 4149, will not be considered in this decision because the LOE is a placeholder LOE and other data is available to assess the water-segment pollutant combination. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification for removing this water segment-pollutant combination from the 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 53 surface sediment samples exceeded the effects range median for chromium in marine sediment and this meets the allowable frequency listed in Table 4.1 of the Listing Policy. 4. 14 of 53 surface sediment samples showed toxicity, however none were associated with elevated chromium levels and this meets the allowable frequency listed in Table 4.1 of the Listing Policy. 5. Pursuant to section 4.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.

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

State Board Review of Regional Board Conclusion and Recommendation:

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

USEPA Action (if applicable):

Line of Evidence (LOE) for Decision ID 7290, Chromium (sediment)	Region 4
San Pedro Bay Near/Off Shore Zones

LOE ID:

28516

Pollutant:

Sediment Toxicity

LOE Subgroup:

Toxicity

Matrix:

Sediment

Fraction:

None

Beneficial Use:

Marine Habitat

Aquatic Life Use:

Preservation of Rare & Endangered Species

Number of Samples:

Number of Exceedances:

Data and Information Type:

Toxicity testing of sediments

Data Used to Assess Water Quality:

One of three sediment samples were deemed moderately toxic.

Data Reference:

Southern California Bight 2003 Regional Marine Monitoring Survey Data

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Basin Plan states that, "[a]ll waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in human, plant, animal, or aquatic life."

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Bay et. al. classifies sediment toxicity based on the following survival percentages: Non toxic if greater than or equal to 80% survival; moderately toxic if between 50 to 80% survival; and highly toxic if less than 50% survival.

Guideline Reference:

Southern California Bight 1998 Regional Monitoring Program. Volume IV. Sediment Toxicity.

Spatial Representation:

A total of three stations were monitored in the San Pedro Bay near/off shore zones which include the following stations:
4066 (Lat: 33.74137, Long: -118.11663),
4274 (Lat: 33.7282833333, Long: -118.157083333), and
4408 (Lat: 33.75495, Long: -118.163533333).

Temporal Representation:

Composite surface sediment samples were taken on 07/21/2003 for station 4066, on 07/16/2003 and 08/07/2003 for stations 4098 and 4274.

Environmental Conditions:

QAPP Information:

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

QAPP Information Reference(s):

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

Line of Evidence (LOE) for Decision ID 7290, Chromium (sediment)	Region 4
San Pedro Bay Near/Off Shore Zones

LOE ID:

28515

Pollutant:

Chromium (total)

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Aquatic Life Use:

Preservation of Rare & Endangered Species

Number of Samples:

Number of Exceedances:

Data and Information Type:

Toxicity testing of sediments

Data Used to Assess Water Quality:

Zero of 53 samples exceeded the effects range median for chromium in marine sediment.

Data Reference:

Southern California Bight 2003 Regional Marine Monitoring Survey Data

Contaminated Sediments Task Force Sediment Chemistry data for San Pedro Bay. 1992-2003.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

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

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Long et. al. lists a sediment effects range median of 370 ug/g dry weight for chromium.

Guideline Reference:

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

Spatial Representation:

Several state sponsored studies were collecting sediment samples in San Pedro Bay near/off shore zones, including BPTCP 1992-94, BPTCP 1996-97; Bight 1998; Bight 2003.

Temporal Representation:

Composite surface sediment samples were taken and analyzed during spring/summer/fall.

Environmental Conditions:

QAPP Information:

Data was collected in compliance with the sampling and monitoring procedures detailed in Bay Protection Toxics Clean Program, Bight 1998, and Bight 2003 Quality Assurance Manual.

QAPP Information Reference(s):

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

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

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

Line of Evidence (LOE) for Decision ID 7290, Chromium (sediment)	Region 4
San Pedro Bay Near/Off Shore Zones

LOE ID:

4149

Pollutant:

Chromium (sediment)

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Not Recorded

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

Not Specified

Data Used to Assess Water Quality:

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

Data Reference:

Placeholder reference pre-2006 303(d)

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Unspecified

Objective/Criterion Reference:

Placeholder reference pre-2006 303(d)

Evaluation Guideline:

Unspecified

Guideline Reference:

Placeholder reference pre-2006 303(d)

Spatial Representation:

Unspecified

Temporal Representation:

Unspecified

Environmental Conditions:

Unspecified

QAPP Information:

Unspecified

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 7290, Chromium (sediment)	Region 4
San Pedro Bay Near/Off Shore Zones

LOE ID:

102

Pollutant:

Sediment Toxicity

LOE Subgroup:

Toxicity

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

Toxicity testing of sediments

Data Used to Assess Water Quality:

Overall, thirteen of 50 samples were toxic. This total was created from several different sediment studies within San Pedro Bay. Eleven of 33 samples were toxic (BPTCP). Two of 14 samples were toxic (Bight, 1998). None of three samples were toxic (W-EMAP) (LARWQCB & CCC, 2004).

Data Reference:

Placeholder reference 2006 303(d)

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Los Angeles RWQCB Basin Plan: All waters should be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological response in, human, plant, animal, or aquatic life.

Objective/Criterion Reference:

Placeholder reference 2006 303(d)

Evaluation Guideline:

Samples were considered toxic if (1) there was a significant difference in mean organism response between the sample and the control, and (2) the mean organism response in the test, as a percent of the control, was less than the threshold based on the 90th percentile minimum significant difference value.

Guideline Reference:

Placeholder reference 2006 303(d)

Spatial Representation:

Fifty sites were sampled throughout San Pedro Bay.

Temporal Representation:

Samples were collected in 1992, 1994, 1996, 1998 and 1999.

Environmental Conditions:

QAPP Information:

Contaminated Sediment Task Force (2005) and references therein (BPTCP QAPP, Bight 98 QAPP, EMAP 1999 QAPP).

QAPP Information Reference(s):


DECISION ID	7291	Region 4
San Pedro Bay Near/Off Shore Zones

Pollutant:	Copper (sediment)
Final Listing Decision:	Delist from 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	List on 303(d) list (TMDL required list)(2006)
Revision Status	Revised
Reason for Delisting:	Applicable WQS attained; reason for recovery unspecified
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	This pollutant is being considered for removal from the section 303(d) list under section 4.1 and 4.6 of the Listing Policy. Under this section a single line of evidence is necessary to assess listing status. Four lines of evidence are available in the administrative record to assess this pollutant. Line of Evidence (LOE) 4150, will not be considered in this decision because the LOE is a placeholder LOE and other data is available to assess the water-segment pollutant combination. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification for removing this water segment-pollutant combination from the 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 59 surface sediment samples exceeded the effects range median for copper in marine sediment and this meets the allowable frequency listed in Table 4.1 of the Listing Policy. 4. 14 of 53 surface sediment samples showed toxicity, however none were associated with elevated copper levels and this meets the allowable frequency listed in Table 4.1 of the Listing Policy. 5. Pursuant to section 4.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.

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

State Board Review of Regional Board Conclusion and Recommendation:

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

USEPA Action (if applicable):

Line of Evidence (LOE) for Decision ID 7291, Copper (sediment)	Region 4
San Pedro Bay Near/Off Shore Zones

LOE ID:

28529

Pollutant:

Copper

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Aquatic Life Use:

Preservation of Rare & Endangered Species

Number of Samples:

Number of Exceedances:

Data and Information Type:

Toxicity testing of sediments

Data Used to Assess Water Quality:

Zero of 59 samples exceeded the effects range median for copper in marine sediment.

Data Reference:

Southern California Bight 2003 Regional Marine Monitoring Survey Data

Contaminated Sediments Task Force Sediment Chemistry data for San Pedro Bay. 1992-2003.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

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

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Long et. al. lists a sediment effects range median of 270 ug/g dry weight for copper.

Guideline Reference:

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

Spatial Representation:

Several state sponsored studies were collecting sediment samples in San Pedro Bay near/off shore zones, including BPTCP 1992-94, BPTCP 1996-97; Bight 1998; Bight 2003.

Temporal Representation:

Composite surface sediment samples were taken and analyzed during spring/summer/fall.

Environmental Conditions:

QAPP Information:

Data was collected in compliance with the sampling and monitoring procedures detailed in Bay Protection Toxics Clean Program, Bight 1998, and Bight 2003 Quality Assurance Manual.

QAPP Information Reference(s):

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

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

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

Line of Evidence (LOE) for Decision ID 7291, Copper (sediment)	Region 4
San Pedro Bay Near/Off Shore Zones

LOE ID:

28516

Pollutant:

Sediment Toxicity

LOE Subgroup:

Toxicity

Matrix:

Sediment

Fraction:

None

Beneficial Use:

Marine Habitat

Aquatic Life Use:

Preservation of Rare & Endangered Species

Number of Samples:

Number of Exceedances:

Data and Information Type:

Toxicity testing of sediments

Data Used to Assess Water Quality:

One of three sediment samples were deemed moderately toxic.

Data Reference:

Southern California Bight 2003 Regional Marine Monitoring Survey Data

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Southern California Bight 1998 Regional Monitoring Program. Volume IV. Sediment Toxicity.

Spatial Representation:

Temporal Representation:

Composite surface sediment samples were taken on 07/21/2003 for station 4066, on 07/16/2003 and 08/07/2003 for stations 4098 and 4274.

Environmental Conditions:

QAPP Information:

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

QAPP Information Reference(s):

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

Line of Evidence (LOE) for Decision ID 7291, Copper (sediment)	Region 4
San Pedro Bay Near/Off Shore Zones

LOE ID:

4150

Pollutant:

Copper (sediment)

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Not Recorded

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

Not Specified

Data Used to Assess Water Quality:

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

Data Reference:

Placeholder reference pre-2006 303(d)

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Unspecified

Objective/Criterion Reference:

Placeholder reference pre-2006 303(d)

Evaluation Guideline:

Unspecified

Guideline Reference:

Placeholder reference pre-2006 303(d)

Spatial Representation:

Unspecified

Temporal Representation:

Unspecified

Environmental Conditions:

Unspecified

QAPP Information:

Unspecified

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 7291, Copper (sediment)	Region 4
San Pedro Bay Near/Off Shore Zones

LOE ID:

102

Pollutant:

Sediment Toxicity

LOE Subgroup:

Toxicity

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

Toxicity testing of sediments

Data Used to Assess Water Quality:

Data Reference:

Placeholder reference 2006 303(d)

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Placeholder reference 2006 303(d)

Evaluation Guideline:

Guideline Reference:

Placeholder reference 2006 303(d)

Spatial Representation:

Fifty sites were sampled throughout San Pedro Bay.

Temporal Representation:

Samples were collected in 1992, 1994, 1996, 1998 and 1999.

Environmental Conditions:

QAPP Information:

Contaminated Sediment Task Force (2005) and references therein (BPTCP QAPP, Bight 98 QAPP, EMAP 1999 QAPP).

QAPP Information Reference(s):


DECISION ID	7292	Region 4
San Pedro Bay Near/Off Shore Zones

Pollutant:	PAHs (Polycyclic Aromatic Hydrocarbons) (sediment)
Final Listing Decision:	Delist from 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	List on 303(d) list (TMDL required list)(2006)
Revision Status	Revised
Reason for Delisting:	Applicable WQS attained; reason for recovery unspecified
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	This pollutant is being considered for removal from the section 303(d) list under section 4.1 and 4.6 of the Listing Policy. Under this section a single line of evidence is necessary to assess listing status. Four lines of evidence are available in the administrative record to assess this pollutant. Line of Evidence (LOE) 4151, will not be considered in this decision because the LOE is a placeholder LOE and other data is available to assess the water-segment pollutant combination. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification for removing this water segment-pollutant combination from the 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 27 surface sediment samples exceeded the effects range medium for high molecular weight PAHs, probable effects level for low molecular weight PAHs, and the sediment quality guidelines for total PAHs in marine sediment and this meets the allowable frequency listed in Table 4.1 of the Listing Policy. 4. 14 of 53 surface sediment samples showed toxicity, however none were associated with elevated PAH levels and this meets the allowable frequency listed in Table 4.1 of the Listing Policy. 5. Pursuant to section 4.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.

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

State Board Review of Regional Board Conclusion and Recommendation:

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

USEPA Action (if applicable):

Line of Evidence (LOE) for Decision ID 7292, PAHs (Polycyclic Aromatic Hydrocarbons) (sediment)	Region 4
San Pedro Bay Near/Off Shore Zones

LOE ID:

4151

Pollutant:

PAHs (Polycyclic Aromatic Hydrocarbons) (sediment)

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Not Recorded

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

Not Specified

Data Used to Assess Water Quality:

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

Data Reference:

Placeholder reference pre-2006 303(d)

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Unspecified

Objective/Criterion Reference:

Placeholder reference pre-2006 303(d)

Evaluation Guideline:

Unspecified

Guideline Reference:

Placeholder reference pre-2006 303(d)

Spatial Representation:

Unspecified

Temporal Representation:

Unspecified

Environmental Conditions:

Unspecified

QAPP Information:

Unspecified

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 7292, PAHs (Polycyclic Aromatic Hydrocarbons) (sediment)	Region 4
San Pedro Bay Near/Off Shore Zones

LOE ID:

28516

Pollutant:

Sediment Toxicity

LOE Subgroup:

Toxicity

Matrix:

Sediment

Fraction:

None

Beneficial Use:

Marine Habitat

Aquatic Life Use:

Preservation of Rare & Endangered Species

Number of Samples:

Number of Exceedances:

Data and Information Type:

Toxicity testing of sediments

Data Used to Assess Water Quality:

One of three sediment samples were deemed moderately toxic.

Data Reference:

Southern California Bight 2003 Regional Marine Monitoring Survey Data

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Southern California Bight 1998 Regional Monitoring Program. Volume IV. Sediment Toxicity.

Spatial Representation:

Temporal Representation:

Composite surface sediment samples were taken on 07/21/2003 for station 4066, on 07/16/2003 and 08/07/2003 for stations 4098 and 4274.

Environmental Conditions:

QAPP Information:

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

QAPP Information Reference(s):

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

Line of Evidence (LOE) for Decision ID 7292, PAHs (Polycyclic Aromatic Hydrocarbons) (sediment)	Region 4
San Pedro Bay Near/Off Shore Zones

LOE ID:

28530

Pollutant:

PAHs (Polycyclic Aromatic Hydrocarbons)

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Aquatic Life Use:

Preservation of Rare & Endangered Species

Number of Samples:

Number of Exceedances:

Data and Information Type:

Toxicity testing of sediments

Data Used to Assess Water Quality:

Zero of 27 samples exceeded the effects range medium for high molecular weight PAHs, probable effects level for low molecular weight PAHs, and the sediment quality guidelines for total PAHs in marine sediment.

Data Reference:

Southern California Bight 2003 Regional Marine Monitoring Survey Data

Contaminated Sediments Task Force Sediment Chemistry data for San Pedro Bay. 1992-2003.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

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

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Long et. al. lists a sediment effects range median of 9,600 ng/g dry weight for high molecular weight PAHs. Macdonald et al. lists a probable effects level of 1,444 ng/g dry weight for low molecular weight PAHs. Fairey et. al. lists a sediment quality guidelines of 1,800 ug/g for total PAHs.

Guideline Reference:

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

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

An evaluation of methods for calculating mean sediment quality guideline quotients as indicators of contamination and acute toxicity to amphipods by chemical mixtures. Environmental Toxicology and Chemistry. 20(10): 2276-2286

Spatial Representation:

Several state sponsored studies were collecting sediment samples in San Pedro Bay near/off shore zones, including BPTCP 1992-94, BPTCP 1996-97; Bight 1998; Bight 2003.

Temporal Representation:

Composite surface sediment samples were taken and analyzed during spring/summer/fall.

Environmental Conditions:

QAPP Information:

Data was collected in compliance with the sampling and monitoring procedures detailed in Bay Protection Toxics Clean Program, Bight 1998, and Bight 2003 Quality Assurance Manual.

QAPP Information Reference(s):

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

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

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

Line of Evidence (LOE) for Decision ID 7292, PAHs (Polycyclic Aromatic Hydrocarbons) (sediment)	Region 4
San Pedro Bay Near/Off Shore Zones

LOE ID:

102

Pollutant:

Sediment Toxicity

LOE Subgroup:

Toxicity

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

Toxicity testing of sediments

Data Used to Assess Water Quality:

Data Reference:

Placeholder reference 2006 303(d)

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Placeholder reference 2006 303(d)

Evaluation Guideline:

Guideline Reference:

Placeholder reference 2006 303(d)

Spatial Representation:

Fifty sites were sampled throughout San Pedro Bay.

Temporal Representation:

Samples were collected in 1992, 1994, 1996, 1998 and 1999.

Environmental Conditions:

QAPP Information:

Contaminated Sediment Task Force (2005) and references therein (BPTCP QAPP, Bight 98 QAPP, EMAP 1999 QAPP).

QAPP Information Reference(s):


DECISION ID	7293	Region 4
San Pedro Bay Near/Off Shore Zones

Pollutant:	Zinc (sediment)
Final Listing Decision:	Delist from 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	List on 303(d) list (TMDL required list)(2006)
Revision Status	Revised
Reason for Delisting:	Applicable WQS attained; reason for recovery unspecified
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	This pollutant is being considered for removal from the section 303(d) list under section 4.1 and 4.6 of the Listing Policy. Under this section a single line of evidence is necessary to assess listing status. Four lines of evidence are available in the administrative record to assess this pollutant. Line of Evidence (LOE) 4152, will not be considered in this decision because the LOE is a placeholder LOE and other data is available to assess the water-segment pollutant combination. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification for removing this water segment-pollutant combination from the 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 59 surface sediment samples exceeded the effects range median for zinc in marine sediment and this meets the allowable frequency listed in Table 4.1 of the Listing Policy. 4. 14 of 53 surface sediment samples showed toxicity, however none were associated with elevated zinc levels and this meets the allowable frequency listed in Table 4.1 of the Listing Policy. 5. Pursuant to section 4.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.

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

State Board Review of Regional Board Conclusion and Recommendation:

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

USEPA Action (if applicable):

Line of Evidence (LOE) for Decision ID 7293, Zinc (sediment)	Region 4
San Pedro Bay Near/Off Shore Zones

LOE ID:

102

Pollutant:

Sediment Toxicity

LOE Subgroup:

Toxicity

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

Toxicity testing of sediments

Data Used to Assess Water Quality:

Data Reference:

Placeholder reference 2006 303(d)

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Placeholder reference 2006 303(d)

Evaluation Guideline:

Guideline Reference:

Placeholder reference 2006 303(d)

Spatial Representation:

Fifty sites were sampled throughout San Pedro Bay.

Temporal Representation:

Samples were collected in 1992, 1994, 1996, 1998 and 1999.

Environmental Conditions:

QAPP Information:

Contaminated Sediment Task Force (2005) and references therein (BPTCP QAPP, Bight 98 QAPP, EMAP 1999 QAPP).

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 7293, Zinc (sediment)	Region 4
San Pedro Bay Near/Off Shore Zones

LOE ID:

28528

Pollutant:

Zinc

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Aquatic Life Use:

Preservation of Rare & Endangered Species

Number of Samples:

Number of Exceedances:

Data and Information Type:

Toxicity testing of sediments

Data Used to Assess Water Quality:

Zero of 59 samples exceeded the effects range median for zinc in marine sediment.

Data Reference:

Southern California Bight 2003 Regional Marine Monitoring Survey Data

Contaminated Sediments Task Force Sediment Chemistry data for San Pedro Bay. 1992-2003.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

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

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

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

Guideline Reference:

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

Spatial Representation:

Several state sponsored studies were collecting sediment samples in San Pedro Bay near/off shore zones, including BPTCP 1992-94, BPTCP 1996-97; Bight 1998; Bight 2003.

Temporal Representation:

Composite surface sediment samples were taken and analyzed during spring/summer/fall.

Environmental Conditions:

QAPP Information:

Data was collected in compliance with the sampling and monitoring procedures detailed in Bay Protection Toxics Clean Program, Bight 1998, and Bight 2003 Quality Assurance Manual.

QAPP Information Reference(s):

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

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

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

Line of Evidence (LOE) for Decision ID 7293, Zinc (sediment)	Region 4
San Pedro Bay Near/Off Shore Zones

LOE ID:

28516

Pollutant:

Sediment Toxicity

LOE Subgroup:

Toxicity

Matrix:

Sediment

Fraction:

None

Beneficial Use:

Marine Habitat

Aquatic Life Use:

Preservation of Rare & Endangered Species

Number of Samples:

Number of Exceedances:

Data and Information Type:

Toxicity testing of sediments

Data Used to Assess Water Quality:

One of three sediment samples were deemed moderately toxic.

Data Reference:

Southern California Bight 2003 Regional Marine Monitoring Survey Data

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Southern California Bight 1998 Regional Monitoring Program. Volume IV. Sediment Toxicity.

Spatial Representation:

Temporal Representation:

Composite surface sediment samples were taken on 07/21/2003 for station 4066, on 07/16/2003 and 08/07/2003 for stations 4098 and 4274.

Environmental Conditions:

QAPP Information:

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

QAPP Information Reference(s):

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

Line of Evidence (LOE) for Decision ID 7293, Zinc (sediment)	Region 4
San Pedro Bay Near/Off Shore Zones

LOE ID:

4152

Pollutant:

Zinc (sediment)

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Not Recorded

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

Not Specified

Data Used to Assess Water Quality:

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

Data Reference:

Placeholder reference pre-2006 303(d)

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Unspecified

Objective/Criterion Reference:

Placeholder reference pre-2006 303(d)

Evaluation Guideline:

Unspecified

Guideline Reference:

Placeholder reference pre-2006 303(d)

Spatial Representation:

Unspecified

Temporal Representation:

Unspecified

Environmental Conditions:

Unspecified

QAPP Information:

Unspecified

QAPP Information Reference(s):


DECISION ID	6684	Region 4
San Pedro Bay Near/Off Shore Zones

Pollutant:	Sediment Toxicity
Final Listing Decision:	Do Not Delist from 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Do Not Delist from 303(d) list (TMDL required list)(2006)
Revision Status	Revised
Sources:	Nonpoint Source \| Point Source
Expected TMDL Completion Date:	2009
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	Toxicity is being considered for removal from the list under section 4.6 of the Listing Policy. Under section 4.6 a single line of evidence is necessary to assess listing status for toxicity. Two lines of evidence are available in the administrative record to assess this pollutant. Based on the available data, the site does have significant toxicity. 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 section 303(d) list in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1. The sediment quality guideline used complies, with the requirements of section 6.1.3 of the Policy. 2. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 3. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 4. 14 of the 53 samples were toxic and these exceed the allowable frequency listed in Table 4.1 of the Listing Policy. 5. 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.

USEPA Action (if applicable):	USEPA approved the listing of this water body as a water quality limited segment requiring a TMDL for this pollutant.

Line of Evidence (LOE) for Decision ID 6684, Sediment Toxicity	Region 4
San Pedro Bay Near/Off Shore Zones

LOE ID:

102

Pollutant:

Sediment Toxicity

LOE Subgroup:

Toxicity

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

Toxicity testing of sediments

Data Used to Assess Water Quality:

Data Reference:

Placeholder reference 2006 303(d)

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Placeholder reference 2006 303(d)

Evaluation Guideline:

Guideline Reference:

Placeholder reference 2006 303(d)

Spatial Representation:

Fifty sites were sampled throughout San Pedro Bay.

Temporal Representation:

Samples were collected in 1992, 1994, 1996, 1998 and 1999.

Environmental Conditions:

QAPP Information:

Contaminated Sediment Task Force (2005) and references therein (BPTCP QAPP, Bight 98 QAPP, EMAP 1999 QAPP).

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 6684, Sediment Toxicity	Region 4
San Pedro Bay Near/Off Shore Zones

LOE ID:

28516

Pollutant:

Sediment Toxicity

LOE Subgroup:

Toxicity

Matrix:

Sediment

Fraction:

None

Beneficial Use:

Marine Habitat

Aquatic Life Use:

Preservation of Rare & Endangered Species

Number of Samples:

Number of Exceedances:

Data and Information Type:

Toxicity testing of sediments

Data Used to Assess Water Quality:

One of three sediment samples were deemed moderately toxic.

Data Reference:

Southern California Bight 2003 Regional Marine Monitoring Survey Data

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Southern California Bight 1998 Regional Monitoring Program. Volume IV. Sediment Toxicity.

Spatial Representation:

Temporal Representation:

Composite surface sediment samples were taken on 07/21/2003 for station 4066, on 07/16/2003 and 08/07/2003 for stations 4098 and 4274.

Environmental Conditions:

QAPP Information:

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

QAPP Information Reference(s):

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


DECISION ID	5887	Region 4
San Pedro Bay Near/Off Shore Zones

Pollutant:	DDT (tissue & sediment)
Final Listing Decision:	Do Not Delist from 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Do Not Delist from 303(d) list (TMDL required list)(2006)
Revision Status	Original
Sources:	Nonpoint Source \| Point Source
Expected TMDL Completion Date:	2019
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	This pollutant is being considered for removal from the section 303(d) list under section 4.5 of the Listing Policy. One line of evidence is available in the administrative record to assess this pollutant. Based on the readily available data and information, the weight of evidence indicates that there is insufficient justification in favor of removing this water segment-pollutant combination from 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. Three of the 4 samples exceeded the OEHHA Screening Value but the number of samples is insufficient to determine with the confidence and power required by the Listing Policy. 4. Pursuant to section 4.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.

Regional Board Decision Recommendation:	The decision has not changed.

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.

USEPA Action (if applicable):	USEPA approved the listing of this water body as a water quality limited segment requiring a TMDL for this pollutant.

Line of Evidence (LOE) for Decision ID 5887, DDT (tissue & sediment)	Region 4
San Pedro Bay Near/Off Shore Zones

LOE ID:

Pollutant:

DDT (Dichlorodiphenyltrichloroethane)

LOE Subgroup:

Pollutant-Tissue

Matrix:

Tissue

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

Fish tissue analysis

Data Used to Assess Water Quality:

Three out of 4 samples exceeded. All 4 samples were filet composites representing the following species: queenfish, spotted turbot, and white croaker. All but one white croaker sample exceeded guideline. This white croaker had 99.89 ng/g DDT just below the guideline (TSMP, 2002).

Data Reference:

Placeholder reference 2006 303(d)

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Los Angeles RWQCB Basin Plan: Toxic pollutants shall not be present at levels that will bioaccumulate in aquatic life to levels which are harmful to aquatic life or human health.

Objective/Criterion Reference:

Placeholder reference 2006 303(d)

Evaluation Guideline:

OEHHA Screening Value is 100 ng/g for total DDT (Brodberg & Pollock, 1999).

Guideline Reference:

Placeholder reference 2006 303(d)

Spatial Representation:

One station was sampled: Belmont Pier.

Temporal Representation:

Samples were collected in July and October 1999.

Environmental Conditions:

QAPP Information:

CFCP 1998 Year 1 QA Summary - Pesticides and PCBs. California Department of Fish and Game.
CDFG Fish and Wildlife Water Pollution Control Laboratory Data Quality Assurance Report. 1999 Coastal Fish Contamination Program

QAPP Information Reference(s):


DECISION ID	5888	Region 4
San Pedro Bay Near/Off Shore Zones

Pollutant:	PCBs (Polychlorinated biphenyls)
Final Listing Decision:	Do Not Delist from 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Do Not Delist from 303(d) list (TMDL required list)(2006)
Revision Status	Original
Sources:	Nonpoint Source \| Point Source
Expected TMDL Completion Date:	2019
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	This pollutant is being considered for removal from the section 303(d) list under section 4.5 of the Listing Policy. One line of evidence is available in the administrative record to assess this pollutant. Based on the readily available data and information, the weight of evidence indicates that there is insufficient justification in favor of removing this water segment-pollutant combination from 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. Four of the 4 samples exceeded the OEHHA Screening Value but the number of samples is insufficient to determine with the confidence and power required by the Listing Policy. 4. Pursuant to section 4.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.

Regional Board Decision Recommendation:	The decision has not changed.

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.

USEPA Action (if applicable):	USEPA approved the listing of this water body as a water quality limited segment requiring a TMDL for this pollutant.

Line of Evidence (LOE) for Decision ID 5888, PCBs (Polychlorinated biphenyls)	Region 4
San Pedro Bay Near/Off Shore Zones

LOE ID:

100

Pollutant:

PCBs (Polychlorinated biphenyls)

LOE Subgroup:

Pollutant-Tissue

Matrix:

Tissue

Fraction:

Total

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

Fish tissue analysis

Data Used to Assess Water Quality:

Four out of 4 samples exceeded. All 4 samples were filet composites representing the following species: queenfish, spotted turbot, and white croaker. All samples exceeded guideline (TSMP, 2002).

Data Reference:

Placeholder reference 2006 303(d)

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Los Angeles RWQCB Basin Plan: Toxic pollutants shall not be present at levels that will bioaccumulate in aquatic life to levels which are harmful to aquatic life or human health.

Objective/Criterion Reference:

Placeholder reference 2006 303(d)

Evaluation Guideline:

OEHHA Screening Value is 20 ng/g for total PCBs (Brodberg & Pollock, 1999).

Guideline Reference:

Placeholder reference 2006 303(d)

Spatial Representation:

One station was sampled: Belmont Pier.

Temporal Representation:

Samples were collected in July and October 1999.

Environmental Conditions:

QAPP Information:

QAPP Information Reference(s):


DECISION ID	6794	Region 4
San Pedro Bay Near/Off Shore Zones

Pollutant:	Chlordane
Final Listing Decision:	List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	List on 303(d) list (TMDL required list)(2006)
Revision Status	Original
Sources:	Source Unknown
Expected TMDL Completion Date:	2019
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	This pollutant is being considered for placement on the section 303(d) list under sections 2.1 and 3.6 of the Listing Policy. Two lines of evidence are available in the administrative record to assess this pollutant. Based on section 3.6 the site has significant sediment toxicity and the pollutant is likely to cause or contribute to the toxic effect. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification in favor of placing this water segment-pollutant combination on the section 303(d) list in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1. The sediment quality guideline used complies with the requirements of section 6.1.3 of the Policy. 2. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 3. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 4. Thirteen out of 50 sediment samples were toxic and 12 out of 32 sediment samples exceeded the sediment guideline. These exceed the allowable frequency listed in Table 3.1 of the Listing Policy. The benthic community in this water body is impacted and this pollutant is associated with this impact. 5. 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:	The decision has not changed.

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.

USEPA Action (if applicable):	USEPA approved the listing of this water body as a water quality limited segment requiring a TMDL for this pollutant.

Line of Evidence (LOE) for Decision ID 6794, Chlordane	Region 4
San Pedro Bay Near/Off Shore Zones

LOE ID:

103

Pollutant:

Chlordane

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

Chemical monitoring of sediments

Data Used to Assess Water Quality:

Overall, twelve of 32 samples exceeded numeric guideline for chlordane. This total was created from many different sediment studies within San Pedro Bay. Six of 16 detected results exceeded in 1992-95 (BPTCP). Six of 16 detected results exceeded in 1996-1999 (BPTCP, Bight, and W-EMAP) (LARWQCB & CCC, 2004).

Data Reference:

Placeholder reference 2006 303(d)

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Placeholder reference 2006 303(d)

Evaluation Guideline:

Effects-Range Median value, 6 ug/kg dry wt. (Long and Morgan, 1990).

Guideline Reference:

Placeholder reference 2006 303(d)

Spatial Representation:

Thirty-three sites were sampled throughout San Pedro Bay.

Temporal Representation:

Samples were collected in 1992, 1994, 1996 - 1999.

Environmental Conditions:

QAPP Information:

Contaminated Sediment Task Force (2005) and references therein (BPTCP QAPP, Bight 98 QAPP, EMAP 1999 QAPP).

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 6794, Chlordane	Region 4
San Pedro Bay Near/Off Shore Zones

LOE ID:

102

Pollutant:

Sediment Toxicity

LOE Subgroup:

Toxicity

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

Toxicity testing of sediments

Data Used to Assess Water Quality:

Data Reference:

Placeholder reference 2006 303(d)

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Placeholder reference 2006 303(d)

Evaluation Guideline:

Guideline Reference:

Placeholder reference 2006 303(d)

Spatial Representation:

Fifty sites were sampled throughout San Pedro Bay.

Temporal Representation:

Samples were collected in 1992, 1994, 1996, 1998 and 1999.

Environmental Conditions:

QAPP Information:

Contaminated Sediment Task Force (2005) and references therein (BPTCP QAPP, Bight 98 QAPP, EMAP 1999 QAPP).

QAPP Information Reference(s):