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

Supporting Information

Regional Board 4 - Los Angeles Region

Water Body Name:	Santa Monica Bay Offshore/Nearshore
Water Body ID:	CAB4051300019990921164318
Water Body Type:	Bay & Harbor


DECISION ID	4882	Region 4
Santa Monica Bay Offshore/Nearshore

Pollutant:	Chlordane
Final Listing Decision:	Delist from 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Delist from 303(d) list (TMDL required list)(2006)
Revision Status	Original
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 delisting under sections 4.6 of the Listing Policy. Under section 4.6 a single line of evidence is necessary to assess listing status. Multiple lines of evidence are available in the administrative record to assess this pollutant. Based on section 4.6, the site does have significant sediment toxicity but chlordane is not likely to cause or contribute to any toxic effect. The benthic community is impacted. Based on the readily available data and information, the weight of evidence indicates that there is sufficient 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 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. Four of the 284 sediment samples exceeded the sediment guideline, none of the 425 tissue samples exceeded the guideline, and five of 23 samples exhibit toxicity. Although toxicity is documented, the pollutant does not 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 not being 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):

Line of Evidence (LOE) for Decision ID 4882, Chlordane	Region 4
Santa Monica Bay Offshore/Nearshore

LOE ID:

175

Pollutant:

Chlordane

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

284

Number of Exceedances:

Data and Information Type:

Chemical monitoring of sediments

Data Used to Assess Water Quality:

Four of 284 sediment samples exceeded guidelines. Collection procedures were consistent with approaches described by NOAA CPRD Standardized Sums and SCCWRP Chemistry Datasets Imputation Summation Procedures (USEPA, 2006).

Data Reference:

Placeholder reference 2006 303(d)

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

LARWQCB Basin Plan 1994: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. There shall be no increases in pesticide concentrations found in bottom sediments or aquatic life.

Objective/Criterion Reference:

Placeholder reference 2006 303(d)

Evaluation Guideline:

Sediment Quality Guidelines (SQGs) are used to determine the toxic effects of a sample, concurrently collected measurements of chemical concentrations can be used to associate toxic effects with toxicity or other biological effects. The predictability of toxicity, using the SQGs values reported (Long et al., 1998) is reasonably good and is most useful if accompanied by data from biological analyses, toxicological analyses, and other interpretative tools. The SQG for total chlordane is 6 ug/kg.

Guideline Reference:

Placeholder reference 2006 303(d)

Spatial Representation:

Data was collected at two sites: Palos Verdes Shelf and Hyperion Waste Water Treatment Plant.

Temporal Representation:

Data was collected between 1998 and 2004.

Environmental Conditions:

QAPP Information:

Quality Assurance Document Of The County Sanitation Districts Of Los Angeles County, July 2003.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 4882, Chlordane	Region 4
Santa Monica Bay Offshore/Nearshore

LOE ID:

174

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:

Data generated from 23 samples different stations in Santa Monica Bay using SQGs to assess toxic effects due to total chlordane. No sample exceeded the total chlordane SQG (LACSD, 2004b).

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:

Twenty-three sample sites were sampled within Santa Monica Bay at different dates during 1998.

Temporal Representation:

Twenty-three samples were taken from twenty-three different sampling stations within the Santa Monica Bay during 1998.

Environmental Conditions:

QAPP Information:

Quality Assurance Document of the County Sanitation Districts Of Los Angeles County, July 2003.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 4882, Chlordane	Region 4
Santa Monica Bay Offshore/Nearshore

LOE ID:

173

Pollutant:

Biodiversity impacts

LOE Subgroup:

Population/Community Degradation

Matrix:

Sediment

Fraction:

None

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

Benthic macroinvertebrate surveys

Data Used to Assess Water Quality:

Data generated from 23 samples within different stations in Santa Monica Bay using the BRI to assess benthic conditions indicate that 5 samples marginally deviate from reference conditions (LACSD, 2004b).

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:

Benthic Response Index (BRI) is a guidance developed by SCCWRP based on changes in biodiversity along a pollutant gradient that is defined by the index values. The index points define specific percentages where the biodiversity of the reference pool is lost. The BRI defines the abundance weighted pollution tolerance of the species present at a site and ranges from Response level RL 1 through 4. RL1 indicates marginal deviations from reference conditions (REF), while RL 2 through 4 are considered evidence of disturbed benthic conditions.

Guideline Reference:

Placeholder reference 2006 303(d)

Spatial Representation:

Twenty-three sample sites within Santa Monica Bay at different dates in 1998.

Temporal Representation:

Twenty-three samples taken during 1998 at 23 different sampling stations.

Environmental Conditions:

QAPP Information:

Southern California Bight 1998 Regional Marine Monitoring Survey (Bight, 1998) Quality Assurance Manual (CSCCWRP Bight 1998 Steering Committee. July, 1998)

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 4882, Chlordane	Region 4
Santa Monica Bay Offshore/Nearshore

LOE ID:

176

Pollutant:

Chlordane

LOE Subgroup:

Pollutant-Tissue

Matrix:

Tissue

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

425

Number of Exceedances:

Data and Information Type:

Fish surveys

Data Used to Assess Water Quality:

None of 425 tissue samples exceeded guidelines. Collection procedures were consistent with approaches described by NOAA CPRD Standardized Sums and SCCWRP Chemistry Datasets Imputation Summation Procedures (USEPA, 2006).

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:

OEHHA screening value for chlordane: 30 ug/kg.

Guideline Reference:

Placeholder reference 2006 303(d)

Spatial Representation:

Samples were collected at four sites: Santa Monica Pier, Venice Pier, Party Boat to Malibu Kelp Beds, and Hyperion Waste Water Treatment Plant.

Temporal Representation:

Samples were collected between 1999 and 2004.

Environmental Conditions:

QAPP Information:

Quality Assurance Document Of The County Sanitation Districts Of Los Angeles County July 2003

QAPP Information Reference(s):


DECISION ID	4600	Region 4
Santa Monica Bay Offshore/Nearshore

Pollutant:	PAHs (Polycyclic Aromatic Hydrocarbons)
Final Listing Decision:	Delist from 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Delist from 303(d) list (TMDL required list)(2006)
Revision Status	Original
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 delisting under sections 4.6 of the Listing Policy. Under section 4.6 a single line of evidence is necessary to assess listing status. Three lines of evidence are available in the administrative record to assess this pollutant. Based on section 4.6, the site does have significant sediment toxicity but PAHs are not likely to cause or contribute to any toxic effect. The benthic community is impacted. Based on the readily available data and information, the weight of evidence indicates that there is sufficient 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 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. None of the 292 sediment samples exceeded the PAHs sediment guideline, but five of 23 sediment samples marginally deviate from the reference conditions using the Benthic Response Index (BRI). Toxicity is documented, however the pollutant does not 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:	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):

Line of Evidence (LOE) for Decision ID 4600, PAHs (Polycyclic Aromatic Hydrocarbons)	Region 4
Santa Monica Bay Offshore/Nearshore

LOE ID:

173

Pollutant:

Biodiversity impacts

LOE Subgroup:

Population/Community Degradation

Matrix:

Sediment

Fraction:

None

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

Benthic macroinvertebrate surveys

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:

Twenty-three sample sites within Santa Monica Bay at different dates in 1998.

Temporal Representation:

Twenty-three samples taken during 1998 at 23 different sampling stations.

Environmental Conditions:

QAPP Information:

Southern California Bight 1998 Regional Marine Monitoring Survey (Bight, 1998) Quality Assurance Manual (CSCCWRP Bight 1998 Steering Committee. July, 1998)

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 4600, PAHs (Polycyclic Aromatic Hydrocarbons)	Region 4
Santa Monica Bay Offshore/Nearshore

LOE ID:

178

Pollutant:

PAHs (Polycyclic Aromatic Hydrocarbons)

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

269

Number of Exceedances:

Data and Information Type:

Chemical monitoring of sediments

Data Used to Assess Water Quality:

None of the 269 samples exceeded the sediment quality guideline (LARWQCB & CCC, 2004).

Data Reference:

Placeholder reference 2006 303(d)

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

LARWQCB Basin Plan 1994: All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life.

Objective/Criterion Reference:

Placeholder reference 2006 303(d)

Evaluation Guideline:

Sediment Quality Guideline for total PAHs is 1800 ug/g (Fairey et al., 2001).

Guideline Reference:

Placeholder reference 2006 303(d)

Spatial Representation:

Samples taken in Santa Monica Bay offshore/nearshore.

Temporal Representation:

Samples taken between 1980 and 2001. Most of these samples were taken after the year 1997.

Environmental Conditions:

QAPP Information:

QA Info Missing

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 4600, PAHs (Polycyclic Aromatic Hydrocarbons)	Region 4
Santa Monica Bay Offshore/Nearshore

LOE ID:

177

Pollutant:

PAHs (Polycyclic Aromatic Hydrocarbons)

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

Chemical monitoring of sediments

Data Used to Assess Water Quality:

Data generated from 23 samples at different stations in Santa Monica Bay using SQGs to assess toxic effects due total PAHs. No sample exceeded the total PAHs SQG for the protection of marine aquatic life (LACSD, 2004b).

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:

Sediment Quality Guideline for total PAHs is 1800 ug/g (Fairey et al., 2001).

Guideline Reference:

Placeholder reference 2006 303(d)

Spatial Representation:

Twenty-three sample sites were sampled within Santa Monica Bay at different dates during 1998.

Temporal Representation:

Twenty-three samples where taken from 5/7/02 through 5/4/04 at quarterly intervals from three sampling stations (R1, R2, and R5).

Environmental Conditions:

QAPP Information:

Quality Assurance Document of the County Sanitation Districts Of Los Angeles County, July 2003.

QAPP Information Reference(s):


DECISION ID	5308	Region 4
Santa Monica Bay Offshore/Nearshore

Pollutant:	PCBs (Polychlorinated biphenyls) (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:	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. Six of the 7 samples exceeded the water quality objectives but the number of samples is insufficient to determine with the confidence and power 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:	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 5308, PCBs (Polychlorinated biphenyls) (tissue & sediment)	Region 4
Santa Monica Bay Offshore/Nearshore

LOE ID:

179

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:

Six out of 7 samples exceeded. All 7 samples were filet composites representing the following species: barred surfperch, California corbina, queenfish, walleye surfperch, and white croaker. All but one of two California corbina 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:

20 ng/g (OEHHA Screening Value).

Guideline Reference:

Placeholder reference 2006 303(d)

Spatial Representation:

Two stations were sampled: Santa Monica Pier and Venice Pier.

Temporal Representation:

Samples were collected in July and November 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 (CFCP Year 2). California Department of Fish and Game.

QAPP Information Reference(s):


DECISION ID	7083	Region 4
Santa Monica Bay Offshore/Nearshore

Pollutant:	DDT (tissue & sediment)
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:	Nonpoint Source \| Point Source
Expected TMDL Completion Date:	2019
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	303(d) listing decisions made prior to 2006 were not held in an assessment database. The Regional Boards will update this decision when new data and information become available and are assessed.

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 7083, DDT (tissue & sediment)	Region 4
Santa Monica Bay Offshore/Nearshore

LOE ID:

4162

Pollutant:

DDT (tissue & sediment)

LOE Subgroup:

Pollutant-Tissue

Matrix:

Tissue

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):


DECISION ID	7084	Region 4
Santa Monica Bay Offshore/Nearshore

Pollutant:	Debris
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:	Nonpoint Source \| Point Source
Expected TMDL Completion Date:	2019
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	303(d) listing decisions made prior to 2006 were not held in an assessment database. The Regional Boards will update this decision when new data and information become available and are assessed.

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 7084, Debris	Region 4
Santa Monica Bay Offshore/Nearshore

LOE ID:

4163

Pollutant:

Debris

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Not Recorded

Beneficial Use:

Non-Contact Recreation

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	7085	Region 4
Santa Monica Bay Offshore/Nearshore

Pollutant:	Fish Consumption Advisory
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:	Nonpoint Source \| Point Source
Expected TMDL Completion Date:	2019
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	303(d) listing decisions made prior to 2006 were not held in an assessment database. The Regional Boards will update this decision when new data and information become available and are assessed.

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 7085, Fish Consumption Advisory	Region 4
Santa Monica Bay Offshore/Nearshore

LOE ID:

4164

Pollutant:

Fish Consumption Advisory

LOE Subgroup:

Health Advisories

Matrix:

Tissue

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):


DECISION ID	7086	Region 4
Santa Monica Bay Offshore/Nearshore

Pollutant:	Sediment Toxicity
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:	Nonpoint Source \| Point Source
Expected TMDL Completion Date:	2019
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	303(d) listing decisions made prior to 2006 were not held in an assessment database. The Regional Boards will update this decision when new data and information become available and are assessed.

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 7086, Sediment Toxicity	Region 4
Santa Monica Bay Offshore/Nearshore

LOE ID:

4165

Pollutant:

Sediment Toxicity

LOE Subgroup:

Toxicity

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:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Unspecified

Temporal Representation:

Unspecified

Environmental Conditions:

Unspecified

QAPP Information:

Unspecified

QAPP Information Reference(s):