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

Supporting Information

Regional Board 4 - Los Angeles Region

Water Body Name:	Marina del Rey Harbor - Back Basins
Water Body ID:	CAB4051700019990921120356
Water Body Type:	Bay & Harbor


DECISION ID	69150	Region 4
Marina del Rey Harbor - Back Basins

Pollutant:	DDT (Dichlorodiphenyltrichloroethane)
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)(2016)
Revision Status	Original
Sources:	A Source Unknown
Expected TMDL Completion Date:	2005
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 and 4.6 of the Listing Policy a single line of evidence is necessary to assess listing status. Five lines of evidence are available in the administrative record to assess this pollutant. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against 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. Two of nine samples exceeded the the OEHHA screening value for DDT in fish tissue and this sample size is insufficient to determine with the power and confidence of the Listing Policy if standards are not met. A minimum of 28 samples is needed for application of table 4.1. 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:	This is a decision previously approved by the State Water Resources Control Board and the USEPA. No new data were assessed by the Regional Board for the current cycle. 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.

Line of Evidence (LOE) for Decision ID 69150, DDT (Dichlorodiphenyltrichloroethane)	Region 4
Marina del Rey Harbor - Back Basins

LOE ID:

185

Pollutant:

DDT (Dichlorodiphenyltrichloroethane)

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:

Two out of 4 samples exceeded. A total of 3 filet composite samples of white croaker, yellowfin croaker, and round stingray along with an individual sample of sargo were collected. White croaker was collected in 1993. All others were collected in 1995. The guideline was exceeded in white croaker and sargo. Yellowfin croaker and round stingray did not exceed 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:

100 ng/g - OEHHA Screening Value (Brodberg and Pollock, 1999).

Guideline Reference:

Placeholder reference 2006 303(d)

Spatial Representation:

One station located about midway between the boat ramp and the entrance to the ocean.

Temporal Representation:

Samples were collected on 6/22/93 and 6/28/95.

Environmental Conditions:

QAPP Information:

Toxic Substances Monitoring Program 1992-93 and 1994-95 Data Reports.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 69150, DDT (Dichlorodiphenyltrichloroethane)	Region 4
Marina del Rey Harbor - Back Basins

LOE ID:

5713

Pollutant:

DDT (Dichlorodiphenyltrichloroethane)

LOE Subgroup:

Pollutant-Tissue

Matrix:

Tissue

Fraction:

None

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:

A total of zero of four samples exceeded the OEHHA screening value. Four fish tissue samples, California Halibut, were taken as part of the 1998 Southern Califronia Bight Regional Marine Monitoring.

Data Reference:

Southern CA Bight 1998 Regional Marine Monitoring Survey Data

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

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

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

100 ug/kg OEHHA Screening Value (Brodberg & Pollock, 1999)

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

Spatial Representation:

Fish samples were collected from the entrance channel and back basins of Marina del Rey Harbor: #2444 (Lat: 33 58.67¿), #2446 (33 58.53¿), #2447 (33 58.35¿), #2448 (33 58.18¿).

Temporal Representation:

Four composite samples were taken in 09/02/1998 as part of the Bight 98 monitoring program.

Environmental Conditions:

QAPP Information:

The work was performed in accordance with the provisions of the Southern California Bight 2003 Regional Marine Monitoring Survey (Bight'03) Quality Assurance Manual.

QAPP Information Reference(s):

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

Line of Evidence (LOE) for Decision ID 69150, DDT (Dichlorodiphenyltrichloroethane)	Region 4
Marina del Rey Harbor - Back Basins

LOE ID:

5726

Pollutant:

DDT (Dichlorodiphenyltrichloroethane)

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:

Fish tissue analysis

Data Used to Assess Water Quality:

A total of zero of one sample exceeded the OEHHA screening value for DDT. One fish tissue sample, White Croaker, was taken as part of the Los Angeles County Department of Beaches and Harbors independent monitoring event.

Data Reference:

Pesticide tissue samples for Marina del Rey Harbor Back Basins. Sampled by Aquatic Bioassay & Consulting and tested by CRG Marine Laboratories for Aquatic for Los Angeles County Department of Beaches and Harbors.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

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

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

100 ug/kg OEHHA Screening Value (Brodberg & Pollock, 1999)

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

Spatial Representation:

Fish samples were collected from the entrance channel and back basins of Marina del Rey Harbor.

Temporal Representation:

One composite tissue sample was collected in 2002 as part of the Los Angeles County Department of Beaches and Harbors independent monitoring event.

Environmental Conditions:

QAPP Information:

QA Info. not available.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 69150, DDT (Dichlorodiphenyltrichloroethane)	Region 4
Marina del Rey Harbor - Back Basins

LOE ID:

187

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:

Seven samples, 6 samples considered toxic (Anderson et al., 1998).

Data Reference:

Placeholder reference 2006 303(d)

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Basin Plan: Existing habitats and associated populations of wetlands fauna and flora shall be maintained by:

-Maintaining substrate characteristics necessary to support flora and fauna which would be present naturally,
-Protecting food supplies for fish and wildlife,
-Protecting reproductive and nursery areas, and
-Protecting wildlife corridors.

Basin Plan: Surface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use.

Objective/Criterion Reference:

Placeholder reference 2006 303(d)

Evaluation Guideline:

BPTCP reference envelope approach used.

Guideline Reference:

Placeholder reference 2006 303(d)

Spatial Representation:

Samples were collected synoptically with sediment samples.

Temporal Representation:

Summer-winter 1993, summer 1996, fall-winter 1997.

Environmental Conditions:

QAPP Information:

BPTCP QAPP.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 69150, DDT (Dichlorodiphenyltrichloroethane)	Region 4
Marina del Rey Harbor - Back Basins

LOE ID:

27769

Pollutant:

Sediment Toxicity

LOE Subgroup:

Toxicity

Matrix:

Sediment

Fraction:

None

Beneficial Use:

Marine Habitat

Aquatic Life Use:

Wildlife Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

Toxicity testing of sediments

Data Used to Assess Water Quality:

A total of one out of four samples exhibited significant toxicity to Eohaustorius Estuarius.

Data Reference:

Southern California Bight 2003 Regional Marine Monitoring Survey Data

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

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

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Toxicity was defined as a statistically significant effect in the sample exposure compared to the control using EPA-recommended hypothesis testing (parametric Dunnett¿s Test or non-parametric Kruskal-Wallis or Wilcoxon Two-sample Test).

Guideline Reference:

Methods for Measuring the Acute Toxicity of Effluents and Receiving Waters to Freshwater and Marine Organisms, Fourth Edition. EPA 600/4-90/27.

Spatial Representation:

Four monitoring stations were monitored in Marina del Rey Harbor back basins as part of the Bight 03 Monitoring Project:
4085 (Lat: 33.9643, Long: -118.45345),
4117 (Lat: 33.98225, Long: -118.44393),
4149 (Lat: 33.96334, Long: -118.45527), and
4341 (Lat: 33.97253, Long: -118.44897).

Temporal Representation:

Sediment samples were taken on 09/09/2003 as part of the Bight 03 Monitoring Project.

Environmental Conditions:

QAPP Information:

The work was performed in accordance with the provisions of the Southern California Bight 2003 Regional Marine Monitoring Survey (Bight¿03) 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 69150, DDT (Dichlorodiphenyltrichloroethane)	Region 4
Marina del Rey Harbor - Back Basins

LOE ID:

192

Pollutant:

Fish Consumption Advisory

LOE Subgroup:

Health Advisories

Matrix:

Water

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 2006 303(d)

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Temporal Representation:

Environmental Conditions:

QAPP Information:

QA Info Missing

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 69150, DDT (Dichlorodiphenyltrichloroethane)	Region 4
Marina del Rey Harbor - Back Basins

LOE ID:

184

Pollutant:

DDT (Dichlorodiphenyltrichloroethane)

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:

Ten samples ranging in concentration from 33.96 ppb to 97 ppb (Anderson, et al., 1998).

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:

A sediment quality guideline is not available that satisfies the conditions established in section 6.1.3 of the Listing Policy.

Guideline Reference:

Placeholder reference 2006 303(d)

Spatial Representation:

Samples were collected synoptically with toxicity samples.

Temporal Representation:

Summer-winter 1993, summer 1996, fall-winter 1997.

Environmental Conditions:

QAPP Information:

BPTCP QAPP.

QAPP Information Reference(s):


DECISION ID	69637	Region 4
Marina del Rey Harbor - Back Basins

Pollutant:	Dieldrin
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)(2016)
Revision Status	Original
Sources:	A Source Unknown
Expected TMDL Completion Date:	2005
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	This pollutant is being considered for removal from the 303(d) List under section 4.5 of the Listing Policy. Under section 4.5 a single line of evidence is necessary to assess delisting status. Two lines of evidence are available in the administrative record to assess this pollutant. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against 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. Two out of five samples exceeded the OEHHA screening value for dieldrin and this sample size is insufficient to determine with the power and confidence of the Listing Policy if standards are met. A minimum of 28 samples is needed for application of table 4.1. 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:	This is a decision previously approved by the State Water Resources Control Board and the USEPA. No new data were assessed by the Regional Board for the current cycle. 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.

Line of Evidence (LOE) for Decision ID 69637, Dieldrin	Region 4
Marina del Rey Harbor - Back Basins

LOE ID:

189

Pollutant:

Dieldrin

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:

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:

2 ng/g - OEHHA Screening Value.

Guideline Reference:

Placeholder reference 2006 303(d)

Spatial Representation:

One station located about midway between the boat ramp and the entrance to the ocean.

Temporal Representation:

Samples were collected on 6/22/93 and 6/28/95.

Environmental Conditions:

QAPP Information:

Toxic Substances Monitoring Program 1992-93 and 1994-95 Data Reports.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 69637, Dieldrin	Region 4
Marina del Rey Harbor - Back Basins

LOE ID:

192

Pollutant:

Fish Consumption Advisory

LOE Subgroup:

Health Advisories

Matrix:

Water

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 2006 303(d)

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Temporal Representation:

Environmental Conditions:

QAPP Information:

QA Info Missing

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 69637, Dieldrin	Region 4
Marina del Rey Harbor - Back Basins

LOE ID:

5754

Pollutant:

Dieldrin

LOE Subgroup:

Pollutant-Tissue

Matrix:

Tissue

Fraction:

None

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:

A total of zero of one sample exceeded the OEHHA screening value. One fish tissue sample, White Croaker, was taken as part of the Los Angeles County Department of Beaches and Harbors independent monitoring event.

Data Reference:

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Region 4 Basin Plan Objective for bioaccumulation states: "Toxic pollutants shall not be present at levels that will bioaccumulate in aquatic life to levels which are harmful to aquatic life or human health."

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

The Evaluation Guideline for Protection from the Consumption of Fish and Shellfish value of 2 ug/kg (OEHHA Screening Value--Brodberg & Pollock, 1999).

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

Spatial Representation:

Fish sample was collected from the back basins of Marina del Rey Harbor.

Temporal Representation:

One composite tissue sample was collected in 2002 as part of the Los Angeles County Department of Beaches and Harbors independent monitoring event.

Environmental Conditions:

QAPP Information:

QA information not available.

QAPP Information Reference(s):


DECISION ID	69840	Region 4
Marina del Rey Harbor - Back Basins

Pollutant:	Copper
Final Listing Decision:	Do Not Delist from 303(d) list (being addressed with USEPA approved TMDL)
Last Listing Cycle's Final Listing Decision:	Do Not Delist from 303(d) list (being addressed with USEPA approved TMDL)(2016)
Revision Status	Original
Sources:	A Source Unknown
TMDL Name:	Marina del Rey Harbor - Back Basins Metals (56)
TMDL Project Code:	612
Date TMDL Approved by USEPA:	03/16/2006
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	This pollutant is being considered for removal on the CWA section 303(d) List under sections 2.2 and 4.1 of the Listing Policy. Under SECTION 4.1 of the Policy, a minimum of one line of evidence is needed to assess listing status. 2 lines of evidence are available in the administrative record to assess this pollutant. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against removing this water segment-pollutant combination from the CWA section 303(d) List. There is sufficient justification to place it in the Being Addressed portion of the CWA 303(d) List because a TMDL has been completed and approved by RWQCB and USEPA, and is expected to result in attainment of the standard. 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. 6 of 6 samples exceeded the OBJECTIVE and these exceed the allowable frequency listed in Table 4.1 of the Listing Policy. 4. The Marina Del Rey Harbor ¿ Back Basins Metals TMDL was approved by USEPA on 03/16/2006. 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 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 69840, Copper	Region 4
Marina del Rey Harbor - Back Basins

LOE ID:

195

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 2006 303(d)

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Temporal Representation:

Environmental Conditions:

QAPP Information:

QA Info Missing

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 69840, Copper	Region 4
Marina del Rey Harbor - Back Basins

LOE ID:

86322

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:

All six samples exceeded the criteria of 3.1 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:

Surface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

California Toxics Rule (CTR) lists criterion continuous concentrations to protect aquatic life in marine waters.

Guideline Reference:

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

Spatial Representation:

A total of eight grab samples were collected during each sampling event from Marina del Rey Front and Back Basin (sites 1, 2, 3, & 4). Sample results from the front basins and the back basins were averaged separately per sample event for a total of two sample results per 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	68462	Region 4
Marina del Rey Harbor - Back Basins

Pollutant:	Toxicity
Final Listing Decision:	Do Not Delist from 303(d) list (being addressed with USEPA approved TMDL)
Last Listing Cycle's Final Listing Decision:	Do Not Delist from 303(d) list (being addressed with USEPA approved TMDL)(2016)
Revision Status	Original
Sources:	Nonpoint Source
TMDL Name:	Marina Del Rey Toxics (54)
TMDL Project Code:	234
Date TMDL Approved by USEPA:	01/01/2005
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	This pollutant is being considered for removal on the section 303(d) list under section 4.6 of the Listing Policy. Under section 4.6 a single line of evidence is necessary to assess delisting status. 3 lines of evidence are available in the administrative record to assess this pollutant. The Marina Del Rey Toxics TMDL was approved by the RWQCB in October of 2005 and subsequently approved by USEPA. 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 Water Quality Limited Segments Being Addressed portion of 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. 6 of 7 and 7 of 8 samples exceeded the BPTCP reference envelope evaluation guideline and one of four samples exhibited significant toxicity to Eohaustorius Estuarius. However, a TMDL has been development and approved by USEPA. Implementation of the TMDL is anticipated to address sediment toxicity in this water body. 4. Pursuant to section 4.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.

Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should 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 68462, Toxicity	Region 4
Marina del Rey Harbor - Back Basins

LOE ID:

187

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:

Seven samples, 6 samples considered toxic (Anderson et al., 1998).

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:

BPTCP reference envelope approach used.

Guideline Reference:

Placeholder reference 2006 303(d)

Spatial Representation:

Samples were collected synoptically with sediment samples.

Temporal Representation:

Summer-winter 1993, summer 1996, fall-winter 1997.

Environmental Conditions:

QAPP Information:

BPTCP QAPP.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 68462, Toxicity	Region 4
Marina del Rey Harbor - Back Basins

LOE ID:

27769

Pollutant:

Sediment Toxicity

LOE Subgroup:

Toxicity

Matrix:

Sediment

Fraction:

None

Beneficial Use:

Marine Habitat

Aquatic Life Use:

Wildlife Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

Toxicity testing of sediments

Data Used to Assess Water Quality:

A total of one out of four samples exhibited significant toxicity to Eohaustorius Estuarius.

Data Reference:

Southern California Bight 2003 Regional Marine Monitoring Survey Data

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

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

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Methods for Measuring the Acute Toxicity of Effluents and Receiving Waters to Freshwater and Marine Organisms, Fourth Edition. EPA 600/4-90/27.

Spatial Representation:

Temporal Representation:

Sediment samples were taken on 09/09/2003 as part of the Bight 03 Monitoring Project.

Environmental Conditions:

QAPP Information:

The work was performed in accordance with the provisions of the Southern California Bight 2003 Regional Marine Monitoring Survey (Bight¿03) 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 68462, Toxicity	Region 4
Marina del Rey Harbor - Back Basins

LOE ID:

86333

Pollutant:

Toxicity

LOE Subgroup:

Toxicity

Matrix:

Water

Fraction:

None

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

TOXICITY TESTING

Data Used to Assess Water Quality:

Eight samples were tested for toxicity. Seven of the eight samples exhibited a statistically significant effect relative to control. The toxicity test used was the mussel embryo development test (EPA 1995 ) using Mytilus galloprovincialis. Toxic effects are expressed as percent reduction in normal development relative to controls.

Data Reference:

Data for Various Pollutants in California Marinas, 2006.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

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

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Toxicity is defined as a statistically significant effect in the sample exposure compared to the control using EPA-recommended hypothesis testing (parametric Dunnett's Test or non-parametric Kruskal-Wallis or Wilcoxon Two-sample Test). The t-test is used to determine if there is a statistically significant decrease in organism response in the sample as compared to the control.

Guideline Reference:

Short-term Methods for Estimating the Chronic Toxicity of Effluents and Receiving Waters to West Coast Marine and Estuarine Organisms. EPA/600/R-95-136.

Spatial Representation:

The samples were collected at Marina del Rey Back Basin and Marina del Rey Back Basin.

Temporal Representation:

Samples were collected on 8/30/2006.

Environmental Conditions:

QAPP Information:

Data quality is good. The data and QA information is provided in Apendix G and I to the report Monitoring For Indicators of Antifouling Paint Pollution In California Marinas, Department of Pesticide Regulation. The Southern California Coastal Water Research Project laboratory conducted the toxicity tests.

QAPP Information Reference(s):


DECISION ID	94259	Region 4
Marina del Rey Harbor - Back Basins

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. 1 line of evidence is available in the administrative record to assess this pollutant. 0 of 24 samples exceeded the OBJECTIVE. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the CWA section 303(d) List. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. 0 of 24 samples exceeded the OBJECTIVE and this does not exceed the allowable frequency listed in Table 3.2 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.

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

State Board Review of Regional Board Conclusion and Recommendation:

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

Line of Evidence (LOE) for Decision ID 94259, pH	Region 4
Marina del Rey Harbor - Back Basins

LOE ID:

86332

Pollutant:

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Zero of 24 samples exceeded the objective.

Data Reference:

Data for Various Pollutants in California Marinas, 2006.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The pH of bays or estuaries shall not be depressed below 6.5 or raised above 8.5 as a result of waste discharges.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Samples were collected from the following stations: Marina del Rey Back Basin 1.1 Marina del Rey Back Basin 1.2* Marina del Rey Back Basin 1.3 Marina del Rey Back Basin 2.1 Marina del Rey Back Basin 2.2* Marina del Rey Back Basin 2.3 Marina del Rey Back Basin 3.1 Marina del Rey Back Basin 3.2* Marina del Rey Back Basin 3.3 Marina del Rey Back Basin 4.1 Marina del Rey Back Basin 4.2* Marina del Rey Back Basin 4.3 Marina del Rey Front Basin 1.1* Marina del Rey Front Basin 1.2* Marina del Rey Front Basin 1.3 Marina del Rey Front Basin 2.1 Marina del Rey Front Basin 2.2* Marina del Rey Front Basin 2.3 Marina del Rey Front Basin 3.1 Marina del Rey Front Basin 3.2* Marina del Rey Front Basin 3.3 Marina del Rey Front Basin 4.1 Marina del Rey Front Basin 4.2* Marina del Rey Front Basin 4.3

Temporal Representation:

Samples were collected twice in August 2006 and once in September 2006.

Environmental Conditions:

QAPP Information:

NPDES quality assurance.

QAPP Information Reference(s):


DECISION ID	94258	Region 4
Marina del Rey Harbor - Back Basins

Pollutant:	Oxygen, Dissolved
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)(2016)
Revision Status	Original
Sources:	A Source Unknown
Expected TMDL Completion Date:	2027
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. 1 line of evidence is available in the administrative record to assess this pollutant. 23 of 24 samples exceeded the OBJECTIVE. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification in favor of placing this water segment-pollutant combination on the CWA section 303(d) List. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. 23 of 24 samples exceeded the OBJECTIVE and this exceeds 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 be placed on the section 303(d) list because applicable water quality standards are exceeded and a pollutant contributes to or causes the problem.

State Board Review of Regional Board Conclusion and Recommendation:

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

Line of Evidence (LOE) for Decision ID 94258, Oxygen, Dissolved	Region 4
Marina del Rey Harbor - Back Basins

LOE ID:

86331

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 24 minimums of Dissolved Oxygen concentrations had 23 exceedences.

Data Reference:

Data for Various Pollutants in California Marinas, 2006.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

For that area known as the Outer Harbor area of Los Angeles-Long Beach Harbors, the mean annual dissolved oxygen concentrations shall be 6.0 mg/L or greater, provided that no single determination shall be less than 5.0 mg/L.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Samples were collected from the following stations: Marina del Rey Back Basin 1.1 Marina del Rey Back Basin 1.2 Marina del Rey Back Basin 1.3 Marina del Rey Back Basin 2.1 Marina del Rey Back Basin 2.2 Marina del Rey Back Basin 2.3 Marina del Rey Back Basin 3.1 Marina del Rey Back Basin 3.2 Marina del Rey Back Basin 3.3 Marina del Rey Back Basin 4.1 Marina del Rey Back Basin 4.2 Marina del Rey Back Basin 4.3 Marina del Rey Front Basin 1.1 Marina del Rey Front Basin 1.2 Marina del Rey Front Basin 1.3 Marina del Rey Front Basin 2.1 Marina del Rey Front Basin 2.2 Marina del Rey Front Basin 2.3 Marina del Rey Front Basin 3.1 Marina del Rey Front Basin 3.2 Marina del Rey Front Basin 3.3 Marina del Rey Front Basin 4.1 Marina del Rey Front Basin 4.2 Marina del Rey Front Basin 4.3

Temporal Representation:

Samples were collected twice in August 2006 and once in September 2006.

Environmental Conditions:

QAPP Information:

NPDES quality assurance.

QAPP Information Reference(s):


DECISION ID	72237	Region 4
Marina del Rey Harbor - Back Basins

Pollutant:	Chlordane
Final Listing Decision:	List on 303(d) list (being addressed by USEPA approved TMDL)
Last Listing Cycle's Final Listing Decision:	List on 303(d) list (being addressed by USEPA approved TMDL)(2016)
Revision Status	Original
Sources:	Nonpoint Source
TMDL Name:	Marina Del Rey Toxics (54)
TMDL Project Code:	234
Date TMDL Approved by USEPA:	01/01/2005
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	This pollutant is being considered for listing under section 2.2 of the Listing Policy. Under this section of the Policy, a minimum of one line of evidence is needed to assess listing status. One line of evidence is available in the administrative record to assess this pollutant. A TMDL has been developed and approved by USEPA and an approved implementation plan is expected to result in attainment of the standard. The Marina del Rey Toxics TMDL was approved by the RWQCB in October of 2005 and subsequently approved by USEPA. Based on the readily available information, the weight of evidence indicates that there is sufficient justification in favor of placing this water segment-pollutant combination in the Water Quality Limited Segments Being Addressed portion of the section 303(d) list.

Regional Board Decision Recommendation:	This is a decision previously approved by the State Water Resources Control Board and the USEPA. No new data were assessed by the Regional Board for the current cycle. 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.

Line of Evidence (LOE) for Decision ID 72237, Chlordane	Region 4
Marina del Rey Harbor - Back Basins

LOE ID:

192

Pollutant:

Fish Consumption Advisory

LOE Subgroup:

Health Advisories

Matrix:

Water

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 2006 303(d)

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Temporal Representation:

Environmental Conditions:

QAPP Information:

QA Info Missing

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 72237, Chlordane	Region 4
Marina del Rey Harbor - Back Basins

LOE ID:

191

Pollutant:

Chlordane (tissue & sediment)

LOE Subgroup:

Pollutant-Tissue

Matrix:

Tissue

Fraction:

None

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 2006 303(d)

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Temporal Representation:

Environmental Conditions:

QAPP Information:

QA Info Missing

QAPP Information Reference(s):


DECISION ID	68012	Region 4
Marina del Rey Harbor - Back Basins

Pollutant:	Indicator Bacteria
Final Listing Decision:	List on 303(d) list (being addressed by USEPA approved TMDL)
Last Listing Cycle's Final Listing Decision:	List on 303(d) list (being addressed by USEPA approved TMDL)(2016)
Revision Status	Original
Sources:	Nonpoint Source
TMDL Name:	Marina del Rey Pathogens (46)
TMDL Project Code:	232
Date TMDL Approved by USEPA:	03/18/2004
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	This pollutant is being considered for listing under section 2.2 of the Listing Policy. Under this section of the Policy, a minimum of one line of evidence is needed to assess listing status. One line of evidence is available in the administrative record to assess this pollutant. A TMDL has been developed and approved by USEPA and an approved implementation plan is expected to result in attainment of the standard. The Marina del Rey Pathogens TMDL was approved by RWQCB on August 7, 2003 and subsequently approved by USEPA on March 18, 2004. This listing will substitute the previous high coliform count listing. 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 in the Water Quality Limited Segments Being Addressed portion of the section 303(d) list.

Regional Board Decision Recommendation:	This is a decision previously approved by the State Water Resources Control Board and the USEPA. No new data were assessed by the Regional Board for the current cycle. 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.

Line of Evidence (LOE) for Decision ID 68012, Indicator Bacteria	Region 4
Marina del Rey Harbor - Back Basins

LOE ID:

180

Pollutant:

Indicator Bacteria

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Not Recorded

Beneficial Use:

Water 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 2006 303(d)

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Temporal Representation:

Environmental Conditions:

QAPP Information:

QA Info Missing

QAPP Information Reference(s):


DECISION ID	72236	Region 4
Marina del Rey Harbor - Back Basins

Pollutant:	Lead
Final Listing Decision:	List on 303(d) list (being addressed by USEPA approved TMDL)
Last Listing Cycle's Final Listing Decision:	List on 303(d) list (being addressed by USEPA approved TMDL)(2016)
Revision Status	Original
Sources:	Nonpoint Source
TMDL Name:	Marina del Rey Harbor - Back Basins Metals (56)
TMDL Project Code:	612
Date TMDL Approved by USEPA:	03/16/2006
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	This pollutant is being considered for listing under section 2.2 of the Listing Policy. Under this section of the Policy, a minimum of one line of evidence is needed to assess listing status. One line of evidence is available in the administrative record to assess this pollutant. A TMDL has been developed and approved by USEPA and an approved implementation plan is expected to result in attainment of the standard. The Marina del Rey Back Basins Metals TMDL was approved by the RWQCB in October of 2005 and subsequently approved by USEPA. Based on the readily available information, the weight of evidence indicates that there is sufficient justification in favor of placing this water segment-pollutant combination in the Water Quality Limited Segments Being Addressed portion of the section 303(d) list.

Regional Board Decision Recommendation:	This is a decision previously approved by the State Water Resources Control Board and the USEPA. No new data were assessed by the Regional Board for the current cycle. 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.

Line of Evidence (LOE) for Decision ID 72236, Lead	Region 4
Marina del Rey Harbor - Back Basins

LOE ID:

194

Pollutant:

Lead (sediment)

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Not Recorded

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

Not Specified

Data Used to Assess Water Quality:

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

Data Reference:

Placeholder reference 2006 303(d)

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Temporal Representation:

Environmental Conditions:

QAPP Information:

QA Info Missing

QAPP Information Reference(s):


DECISION ID	72419	Region 4
Marina del Rey Harbor - Back Basins

Pollutant:	PCBs (Polychlorinated biphenyls)
Final Listing Decision:	List on 303(d) list (being addressed by USEPA approved TMDL)
Last Listing Cycle's Final Listing Decision:	List on 303(d) list (being addressed by USEPA approved TMDL)(2016)
Revision Status	Original
Sources:	Nonpoint Source
TMDL Name:	Marina Del Rey Toxics (54)
TMDL Project Code:	234
Date TMDL Approved by USEPA:	03/16/2006
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	This pollutant is being considered for removal from the 303(d) List under section 4.5 and 4.6 of the Listing Policy. Five lines of evidence are available in the administrative record to assess this pollutant. Two of 4 samples exceed the OEHHA screening value. However, a TMDL is in place to address this pollutant in this water body. Based on the readily available information, the weight of evidence indicates that there is sufficient justification in favor of placing this water segment-pollutant combination in the Water Quality Limited Segments Being Addressed portion of the section 303(d) list. 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. Three out of 4 samples exceeded the OEHHA Screening Value for fish tissue and, although none of the 18 sediment samples exceeded the criteria for PCBs, 6 samples were found to be toxic. However, a TMDL is in place to address this pollutant in this water body. The Marina Del Rey Toxics TMDL was approved by the RWQCB in October of 2005 and subsequently approved by USEPA. 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:	This is a decision previously approved by the State Water Resources Control Board and the USEPA. No new data were assessed by the Regional Board for the current cycle. 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.

Line of Evidence (LOE) for Decision ID 72419, PCBs (Polychlorinated biphenyls)	Region 4
Marina del Rey Harbor - Back Basins

LOE ID:

187

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:

Seven samples, 6 samples considered toxic (Anderson et al., 1998).

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:

BPTCP reference envelope approach used.

Guideline Reference:

Placeholder reference 2006 303(d)

Spatial Representation:

Samples were collected synoptically with sediment samples.

Temporal Representation:

Summer-winter 1993, summer 1996, fall-winter 1997.

Environmental Conditions:

QAPP Information:

BPTCP QAPP.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 72419, PCBs (Polychlorinated biphenyls)	Region 4
Marina del Rey Harbor - Back Basins

LOE ID:

190

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:

Three out of 4 samples exceeded. A total of 3 filet composite samples of white croaker, yellowfin croaker, and round stingray along with an individual sample of sargo were collected. White croaker was collected in 1993. All others were collected in 1995. The guideline was exceeded in white croaker, sargo, and yellowfin croaker. Round stingray did not exceed 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:

20 ng/g - OEHHA Screening Value.

Guideline Reference:

Placeholder reference 2006 303(d)

Spatial Representation:

One station located about midway between the boat ramp and the entrance to the ocean.

Temporal Representation:

Samples were collected on 6/22/93 and 6/28/95.

Environmental Conditions:

QAPP Information:

Toxic Substances Monitoring Program 1992-93 and 1994-95 Data Reports.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 72419, PCBs (Polychlorinated biphenyls)	Region 4
Marina del Rey Harbor - Back Basins

LOE ID:

182

Pollutant:

PCBs (Polychlorinated biphenyls)

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

Chemical monitoring of sediments

Data Used to Assess Water Quality:

18 sediment samples with none exceeding the sediment quality guideline.

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: 400 ug/g (McDonald et al., 2000).

Guideline Reference:

Placeholder reference 2006 303(d)

Spatial Representation:

Samples were collected synoptically with toxicity samples.

Temporal Representation:

Summer-winter 1993, summer 1996, fall-winter 1997.

Environmental Conditions:

QAPP Information:

BPTCP and TSMP QAPPs.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 72419, PCBs (Polychlorinated biphenyls)	Region 4
Marina del Rey Harbor - Back Basins

LOE ID:

192

Pollutant:

Fish Consumption Advisory

LOE Subgroup:

Health Advisories

Matrix:

Water

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 2006 303(d)

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Temporal Representation:

Environmental Conditions:

QAPP Information:

QA Info Missing

QAPP Information Reference(s):


DECISION ID	70463	Region 4
Marina del Rey Harbor - Back Basins

Pollutant:	Zinc
Final Listing Decision:	List on 303(d) list (being addressed by USEPA approved TMDL)
Last Listing Cycle's Final Listing Decision:	List on 303(d) list (being addressed by USEPA approved TMDL)(2016)
Revision Status	Original
Sources:	Nonpoint Source
TMDL Name:	Marina del Rey Harbor - Back Basins Metals (56)
TMDL Project Code:	612
Date TMDL Approved by USEPA:	03/16/2006
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	This pollutant is being considered for listing under section 2.2 of the Listing Policy. Under this section of the Policy, a minimum of one line of evidence is needed to assess listing status. One line of evidence is available in the administrative record to assess this pollutant. A TMDL has been developed and approved by USEPA and an approved implementation plan is expected to result in attainment of the standard. The Marina Del Rey Toxics TMDL was approved by the RWQCB in October of 2005 and subsequently approved by USEPA. Based on the readily available information, the weight of evidence indicates that there is sufficient justification in favor of placing this water segment-pollutant combination in the Water Quality Limited Segments Being Addressed portion of the section 303(d) list.

Regional Board Decision Recommendation:	This is a decision previously approved by the State Water Resources Control Board and the USEPA. No new data were assessed by the Regional Board for the current cycle. 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.

Line of Evidence (LOE) for Decision ID 70463, Zinc	Region 4
Marina del Rey Harbor - Back Basins

LOE ID:

193

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 2006 303(d)

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Temporal Representation:

Environmental Conditions:

QAPP Information:

QA Info Missing

QAPP Information Reference(s):