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

Supporting Information

Regional Board 9 - San Diego Region

Water Body Name: Santa Margarita Lagoon
Water Body ID: CAE9021100019990209155924
Water Body Type: Estuary
 
DECISION ID
106094
Region 9     
Santa Margarita Lagoon
 
Pollutant: 2-Methylnaphthalene
Final Listing Decision: Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision: Do Not List on 303(d) list (TMDL required list)(2018)
Revision Status Revised
Impairment from Pollutant or Pollution: Pollutant
 
Regional Board Conclusion: Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.
 
Regional Board Decision Recommendation: After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
 
State Board Review of Regional Board Conclusion and Recommendation:
 
State Board Decision Recommendation: After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.
 
 
Line of Evidence (LOE) for Decision ID 106094, 2-Methylnaphthalene
Region 9     
Santa Margarita Lagoon
 
LOE ID: 138432
 
Pollutant: 2-Methylnaphthalene
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Marine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Southern California Bight Project 2013 data for Santa Margarita Lagoon to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for Methylnaphthalene, 2- .
Data Reference: Sediment, Toxicity data for the 2020/2022 integrated report in Region 9.
 
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 (Water Quality Control Plan, San Diego Basin).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: The evaluation guideline for 2-methyl-naphthalene from MacDonald et al. 1996, which states that the probable effect level for 2-methyl-naphthalene is 201.28 ug/kg. (dw = Dry Weight)
Guideline Reference: Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278
 
Spatial Representation: Data were collected from 1 station(s). Station Code(s): B13-8253.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-07 to 2013-08-07
Environmental Conditions:
QAPP Information: Bight Coastal Ecology Committee. 2013. Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual
 
Line of Evidence (LOE) for Decision ID 106094, 2-Methylnaphthalene
Region 9     
Santa Margarita Lagoon
 
LOE ID: 138392
 
Pollutant: 2-Methylnaphthalene
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Southern California Bight Project 2013 data for Santa Margarita Lagoon to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for Methylnaphthalene, 2- .
Data Reference: Sediment, Toxicity data for the 2020/2022 integrated report in Region 9.
 
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 (Water Quality Control Plan, San Diego Basin).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: The evaluation guideline for 2-methyl-naphthalene from MacDonald et al. 1996, which states that the probable effect level for 2-methyl-naphthalene is 201.28 ug/kg. (dw = Dry Weight)
Guideline Reference: Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278
 
Spatial Representation: Data were collected from 1 station(s). Station Code(s): B13-8253.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-07 to 2013-08-07
Environmental Conditions:
QAPP Information: Bight Coastal Ecology Committee. 2013. Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual
 
Line of Evidence (LOE) for Decision ID 106094, 2-Methylnaphthalene
Region 9     
Santa Margarita Lagoon
 
LOE ID: 138414
 
Pollutant: 2-Methylnaphthalene
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Southern California Bight Project 2013 data for Santa Margarita Lagoon to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for Methylnaphthalene, 2- .
Data Reference: Sediment, Toxicity data for the 2020/2022 integrated report in Region 9.
 
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 (Water Quality Control Plan, San Diego Basin).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: The evaluation guideline for 2-methyl-naphthalene from MacDonald et al. 1996, which states that the probable effect level for 2-methyl-naphthalene is 201.28 ug/kg. (dw = Dry Weight)
Guideline Reference: Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278
 
Spatial Representation: Data were collected from 1 station(s). Station Code(s): B13-8248.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-07 to 2013-08-07
Environmental Conditions:
QAPP Information: Bight Coastal Ecology Committee. 2013. Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual
 
Line of Evidence (LOE) for Decision ID 106094, 2-Methylnaphthalene
Region 9     
Santa Margarita Lagoon
 
LOE ID: 138246
 
Pollutant: 2-Methylnaphthalene
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Marine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Southern California Bight Project 2013 data for Santa Margarita Lagoon to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for Methylnaphthalene, 2- .
Data Reference: Sediment, Toxicity data for the 2020/2022 integrated report in Region 9.
 
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 (Water Quality Control Plan, San Diego Basin).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: The evaluation guideline for 2-methyl-naphthalene from MacDonald et al. 1996, which states that the probable effect level for 2-methyl-naphthalene is 201.28 ug/kg. (dw = Dry Weight)
Guideline Reference: Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278
 
Spatial Representation: Data were collected from 1 station(s). Station Code(s): B13-8248.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-07 to 2013-08-07
Environmental Conditions:
QAPP Information: Bight Coastal Ecology Committee. 2013. Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual
 
Line of Evidence (LOE) for Decision ID 106094, 2-Methylnaphthalene
Region 9     
Santa Margarita Lagoon
 
LOE ID: 138267
 
Pollutant: 2-Methylnaphthalene
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Southern California Bight Project 2013 data for Santa Margarita Lagoon to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for Methylnaphthalene, 2- .
Data Reference: Sediment, Toxicity data for the 2020/2022 integrated report in Region 9.
 
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 (Water Quality Control Plan, San Diego Basin).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: The evaluation guideline for 2-methyl-naphthalene from MacDonald et al. 1996, which states that the probable effect level for 2-methyl-naphthalene is 201.28 ug/kg. (dw = Dry Weight)
Guideline Reference: Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278
 
Spatial Representation: Data were collected from 1 station(s). Station Code(s): B13-8250.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-07 to 2013-08-07
Environmental Conditions:
QAPP Information: Bight Coastal Ecology Committee. 2013. Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual
 
Line of Evidence (LOE) for Decision ID 106094, 2-Methylnaphthalene
Region 9     
Santa Margarita Lagoon
 
LOE ID: 138207
 
Pollutant: 2-Methylnaphthalene
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Marine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Southern California Bight Project 2013 data for Santa Margarita Lagoon to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for Methylnaphthalene, 2- .
Data Reference: Sediment, Toxicity data for the 2020/2022 integrated report in Region 9.
 
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 (Water Quality Control Plan, San Diego Basin).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: The evaluation guideline for 2-methyl-naphthalene from MacDonald et al. 1996, which states that the probable effect level for 2-methyl-naphthalene is 201.28 ug/kg. (dw = Dry Weight)
Guideline Reference: Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278
 
Spatial Representation: Data were collected from 1 station(s). Station Code(s): B13-8250.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-07 to 2013-08-07
Environmental Conditions:
QAPP Information: Bight Coastal Ecology Committee. 2013. Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual
 
Line of Evidence (LOE) for Decision ID 106094, 2-Methylnaphthalene
Region 9     
Santa Margarita Lagoon
 
LOE ID: 78327
 
Pollutant: 2-Methylnaphthalene
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Bight data for Santa Margarita Lagoon to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for 2-Methylnaphthalene.
Data Reference: Data for Various Pollutants from Bight, 2008.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Water Quality Control Plan for the San Diego Basin (SDRWQCB 2007): All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life.
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: In marine and estuarine sediments the probable effect level (predictive of sediment toxicity for sediment-dwelling organisms) for 2-Methylnaphthalene is 201.28 ng/g dry weight (MacDonald et al., 1996).
Guideline Reference: Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278
 
Spatial Representation: Data for this line of evidence for Santa Margarita Lagoon was collected at 1 monitoring site [ 902_6308 ]
Temporal Representation: Data was collected on a single day 8/29/2008.
Environmental Conditions: Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information: The Quality Assurance Project Plan from Southern California Bight was followed.
QAPP Information Reference(s): Quality Assurance Project Plan from Southern California Bight.
 
 
DECISION ID
106080
Region 9     
Santa Margarita Lagoon
 
Pollutant: Antimony
Final Listing Decision: Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision: Do Not List on 303(d) list (TMDL required list)(2018)
Revision Status Revised
Impairment from Pollutant or Pollution: Pollutant
 
Regional Board Conclusion: Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.
 
Regional Board Decision Recommendation: After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
 
State Board Review of Regional Board Conclusion and Recommendation:
 
State Board Decision Recommendation: After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.
 
 
Line of Evidence (LOE) for Decision ID 106080, Antimony
Region 9     
Santa Margarita Lagoon
 
LOE ID: 135290
 
Pollutant: Antimony
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Southern California Bight Project 2013 data for Santa Margarita Lagoon to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for Antimony .
Data Reference: Sediment, Toxicity data for the 2020/2022 integrated report in Region 9.
 
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 (Water Quality Control Plan, San Diego Basin).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: The eavaluation gudieline used in this assessment comes from Long and Morgan 1990, and is 25 ug/g dw = Dry Weight
Guideline Reference: The potential for biological effects of sediment-sorbed contaminants tested in the National Status of Trends Program. NOAA Technical Memorandum NOS OMA 52. Seattle, WA: National Oceanic and Atmospheric Administration
 
Spatial Representation: Data were collected from 1 station(s). Station Code(s): B13-8248.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-07 to 2013-08-07
Environmental Conditions:
QAPP Information: Bight Coastal Ecology Committee. 2013. Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual
 
Line of Evidence (LOE) for Decision ID 106080, Antimony
Region 9     
Santa Margarita Lagoon
 
LOE ID: 135371
 
Pollutant: Antimony
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Marine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Southern California Bight Project 2013 data for Santa Margarita Lagoon to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for Antimony .
Data Reference: Sediment, Toxicity data for the 2020/2022 integrated report in Region 9.
 
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 (Water Quality Control Plan, San Diego Basin).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: The eavaluation gudieline used in this assessment comes from Long and Morgan 1990, and is 25 ug/g dw = Dry Weight
Guideline Reference: The potential for biological effects of sediment-sorbed contaminants tested in the National Status of Trends Program. NOAA Technical Memorandum NOS OMA 52. Seattle, WA: National Oceanic and Atmospheric Administration
 
Spatial Representation: Data were collected from 1 station(s). Station Code(s): B13-8250.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-07 to 2013-08-07
Environmental Conditions:
QAPP Information: Bight Coastal Ecology Committee. 2013. Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual
 
Line of Evidence (LOE) for Decision ID 106080, Antimony
Region 9     
Santa Margarita Lagoon
 
LOE ID: 135211
 
Pollutant: Antimony
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Marine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Southern California Bight Project 2013 data for Santa Margarita Lagoon to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for Antimony .
Data Reference: Sediment, Toxicity data for the 2020/2022 integrated report in Region 9.
 
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 (Water Quality Control Plan, San Diego Basin).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: The eavaluation gudieline used in this assessment comes from Long and Morgan 1990, and is 25 ug/g dw = Dry Weight
Guideline Reference: The potential for biological effects of sediment-sorbed contaminants tested in the National Status of Trends Program. NOAA Technical Memorandum NOS OMA 52. Seattle, WA: National Oceanic and Atmospheric Administration
 
Spatial Representation: Data were collected from 1 station(s). Station Code(s): B13-8253.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-07 to 2013-08-07
Environmental Conditions:
QAPP Information: Bight Coastal Ecology Committee. 2013. Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual
 
Line of Evidence (LOE) for Decision ID 106080, Antimony
Region 9     
Santa Margarita Lagoon
 
LOE ID: 135353
 
Pollutant: Antimony
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Southern California Bight Project 2013 data for Santa Margarita Lagoon to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for Antimony .
Data Reference: Sediment, Toxicity data for the 2020/2022 integrated report in Region 9.
 
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 (Water Quality Control Plan, San Diego Basin).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: The eavaluation gudieline used in this assessment comes from Long and Morgan 1990, and is 25 ug/g dw = Dry Weight
Guideline Reference: The potential for biological effects of sediment-sorbed contaminants tested in the National Status of Trends Program. NOAA Technical Memorandum NOS OMA 52. Seattle, WA: National Oceanic and Atmospheric Administration
 
Spatial Representation: Data were collected from 1 station(s). Station Code(s): B13-8250.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-07 to 2013-08-07
Environmental Conditions:
QAPP Information: Bight Coastal Ecology Committee. 2013. Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual
 
Line of Evidence (LOE) for Decision ID 106080, Antimony
Region 9     
Santa Margarita Lagoon
 
LOE ID: 78329
 
Pollutant: Antimony
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Bight data for Santa Margarita Lagoon to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Antimony.
Data Reference: Data for Various Pollutants from Bight, 2008.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Water Quality Control Plan for the San Diego Basin (SDRWQCB 2007): All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life.
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: In marine and estuarine sediments the effects range median (predictive of sediment toxicity for sediment-dwelling organisms) for Antimony is 25 ug/g dry weight (Long and Morgan, 1990).
Guideline Reference: Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278
 
Spatial Representation: Data for this line of evidence for Santa Margarita Lagoon was collected at 1 monitoring site [ 902_6308 ]
Temporal Representation: Data was collected on a single day 8/29/2008.
Environmental Conditions: Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information: The Quality Assurance Project Plan from Southern California Bight was followed.
QAPP Information Reference(s): Quality Assurance Project Plan from Southern California Bight.
 
Line of Evidence (LOE) for Decision ID 106080, Antimony
Region 9     
Santa Margarita Lagoon
 
LOE ID: 135250
 
Pollutant: Antimony
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Southern California Bight Project 2013 data for Santa Margarita Lagoon to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for Antimony .
Data Reference: Sediment, Toxicity data for the 2020/2022 integrated report in Region 9.
 
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 (Water Quality Control Plan, San Diego Basin).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: The eavaluation gudieline used in this assessment comes from Long and Morgan 1990, and is 25 ug/g dw = Dry Weight
Guideline Reference: The potential for biological effects of sediment-sorbed contaminants tested in the National Status of Trends Program. NOAA Technical Memorandum NOS OMA 52. Seattle, WA: National Oceanic and Atmospheric Administration
 
Spatial Representation: Data were collected from 1 station(s). Station Code(s): B13-8253.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-07 to 2013-08-07
Environmental Conditions:
QAPP Information: Bight Coastal Ecology Committee. 2013. Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual
 
Line of Evidence (LOE) for Decision ID 106080, Antimony
Region 9     
Santa Margarita Lagoon
 
LOE ID: 135252
 
Pollutant: Antimony
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Marine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Southern California Bight Project 2013 data for Santa Margarita Lagoon to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for Antimony .
Data Reference: Sediment, Toxicity data for the 2020/2022 integrated report in Region 9.
 
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 (Water Quality Control Plan, San Diego Basin).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: The eavaluation gudieline used in this assessment comes from Long and Morgan 1990, and is 25 ug/g dw = Dry Weight
Guideline Reference: The potential for biological effects of sediment-sorbed contaminants tested in the National Status of Trends Program. NOAA Technical Memorandum NOS OMA 52. Seattle, WA: National Oceanic and Atmospheric Administration
 
Spatial Representation: Data were collected from 1 station(s). Station Code(s): B13-8248.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-07 to 2013-08-07
Environmental Conditions:
QAPP Information: Bight Coastal Ecology Committee. 2013. Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual
 
 
DECISION ID
106081
Region 9     
Santa Margarita Lagoon
 
Pollutant: Arsenic
Final Listing Decision: Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision: Do Not List on 303(d) list (TMDL required list)(2018)
Revision Status Revised
Impairment from Pollutant or Pollution: Pollutant
 
Regional Board Conclusion: Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.
 
Regional Board Decision Recommendation: After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
 
State Board Review of Regional Board Conclusion and Recommendation:
 
State Board Decision Recommendation: After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.
 
 
Line of Evidence (LOE) for Decision ID 106081, Arsenic
Region 9     
Santa Margarita Lagoon
 
LOE ID: 135159
 
Pollutant: Arsenic
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Southern California Bight Project 2013 data for Santa Margarita Lagoon to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for Arsenic .
Data Reference: Sediment, Toxicity data for the 2020/2022 integrated report in Region 9.
 
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 (Water Quality Control Plan, San Diego Basin).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: The value used in this assessment comes from Long et al., 1995 and is the effects range median (ERM) value of 70 ug/g.
Guideline Reference: Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278
 
Spatial Representation: Data were collected from 1 station(s). Station Code(s): B13-8253.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-07 to 2013-08-07
Environmental Conditions:
QAPP Information: Bight Coastal Ecology Committee. 2013. Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual
 
Line of Evidence (LOE) for Decision ID 106081, Arsenic
Region 9     
Santa Margarita Lagoon
 
LOE ID: 135198
 
Pollutant: Arsenic
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Marine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Southern California Bight Project 2013 data for Santa Margarita Lagoon to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for Arsenic .
Data Reference: Sediment, Toxicity data for the 2020/2022 integrated report in Region 9.
 
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 (Water Quality Control Plan, San Diego Basin).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: The value used in this assessment comes from Long et al., 1995 and is the effects range median (ERM) value of 70 ug/g.
Guideline Reference: Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278
 
Spatial Representation: Data were collected from 1 station(s). Station Code(s): B13-8250.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-07 to 2013-08-07
Environmental Conditions:
QAPP Information: Bight Coastal Ecology Committee. 2013. Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual
 
Line of Evidence (LOE) for Decision ID 106081, Arsenic
Region 9     
Santa Margarita Lagoon
 
LOE ID: 135319
 
Pollutant: Arsenic
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Southern California Bight Project 2013 data for Santa Margarita Lagoon to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for Arsenic .
Data Reference: Sediment, Toxicity data for the 2020/2022 integrated report in Region 9.
 
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 (Water Quality Control Plan, San Diego Basin).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: The value used in this assessment comes from Long et al., 1995 and is the effects range median (ERM) value of 70 ug/g.
Guideline Reference: Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278
 
Spatial Representation: Data were collected from 1 station(s). Station Code(s): B13-8250.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-07 to 2013-08-07
Environmental Conditions:
QAPP Information: Bight Coastal Ecology Committee. 2013. Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual
 
Line of Evidence (LOE) for Decision ID 106081, Arsenic
Region 9     
Santa Margarita Lagoon
 
LOE ID: 135401
 
Pollutant: Arsenic
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Southern California Bight Project 2013 data for Santa Margarita Lagoon to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for Arsenic .
Data Reference: Sediment, Toxicity data for the 2020/2022 integrated report in Region 9.
 
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 (Water Quality Control Plan, San Diego Basin).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: The value used in this assessment comes from Long et al., 1995 and is the effects range median (ERM) value of 70 ug/g.
Guideline Reference: Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278
 
Spatial Representation: Data were collected from 1 station(s). Station Code(s): B13-8248.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-07 to 2013-08-07
Environmental Conditions:
QAPP Information: Bight Coastal Ecology Committee. 2013. Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual
 
Line of Evidence (LOE) for Decision ID 106081, Arsenic
Region 9     
Santa Margarita Lagoon
 
LOE ID: 135202
 
Pollutant: Arsenic
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Marine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Southern California Bight Project 2013 data for Santa Margarita Lagoon to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for Arsenic .
Data Reference: Sediment, Toxicity data for the 2020/2022 integrated report in Region 9.
 
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 (Water Quality Control Plan, San Diego Basin).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: The value used in this assessment comes from Long et al., 1995 and is the effects range median (ERM) value of 70 ug/g.
Guideline Reference: Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278
 
Spatial Representation: Data were collected from 1 station(s). Station Code(s): B13-8253.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-07 to 2013-08-07
Environmental Conditions:
QAPP Information: Bight Coastal Ecology Committee. 2013. Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual
 
Line of Evidence (LOE) for Decision ID 106081, Arsenic
Region 9     
Santa Margarita Lagoon
 
LOE ID: 135199
 
Pollutant: Arsenic
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Marine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Southern California Bight Project 2013 data for Santa Margarita Lagoon to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for Arsenic .
Data Reference: Sediment, Toxicity data for the 2020/2022 integrated report in Region 9.
 
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 (Water Quality Control Plan, San Diego Basin).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: The value used in this assessment comes from Long et al., 1995 and is the effects range median (ERM) value of 70 ug/g.
Guideline Reference: Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278
 
Spatial Representation: Data were collected from 1 station(s). Station Code(s): B13-8248.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-07 to 2013-08-07
Environmental Conditions:
QAPP Information: Bight Coastal Ecology Committee. 2013. Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual
 
Line of Evidence (LOE) for Decision ID 106081, Arsenic
Region 9     
Santa Margarita Lagoon
 
LOE ID: 78330
 
Pollutant: Arsenic
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Bight data for Santa Margarita Lagoon to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Arsenic.
Data Reference: Data for Various Pollutants from Bight, 2008.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Water Quality Control Plan for the San Diego Basin (SDRWQCB 2007): All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life.
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: In marine and estuarine sediments the effects range median (predictive of sediment toxicity for sediment-dwelling organisms) for Arsenic is 70 ug/g dry weight (Long et al., 1995).
Guideline Reference: Incidence of adverse biological effects within ranges of chemical concentrations in marine and estuary sediments. Environmental Management. 19, (1): 81-97
 
Spatial Representation: Data for this line of evidence for Santa Margarita Lagoon was collected at 1 monitoring site [ 902_6308 ]
Temporal Representation: Data was collected on a single day 8/29/2008.
Environmental Conditions: Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information: The Quality Assurance Project Plan from Southern California Bight was followed.
QAPP Information Reference(s): Quality Assurance Project Plan from Southern California Bight.
 
 
DECISION ID
106083
Region 9     
Santa Margarita Lagoon
 
Pollutant: Benzo(a)anthracene
Final Listing Decision: Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision: Do Not List on 303(d) list (TMDL required list)(2018)
Revision Status Revised
Impairment from Pollutant or Pollution: Pollutant
 
Regional Board Conclusion: Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.
 
Regional Board Decision Recommendation: After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
 
State Board Review of Regional Board Conclusion and Recommendation:
 
State Board Decision Recommendation: After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.
 
 
Line of Evidence (LOE) for Decision ID 106083, Benzo(a)anthracene
Region 9     
Santa Margarita Lagoon
 
LOE ID: 135656
 
Pollutant: Benzo(a)anthracene
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Southern California Bight Project 2013 data for Santa Margarita Lagoon to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for Benz(a)anthracene .
Data Reference: Sediment, Toxicity data for the 2020/2022 integrated report in Region 9.
 
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 (Water Quality Control Plan, San Diego Basin).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: The evaluation guideline for Benz[a]anthrazene from MacDonald et al. 1996, which states that the probable effect level for Benz[a]anthrazene is 692.53 ug/Kg. (dw = Dry Weight)
Guideline Reference: Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278
 
Spatial Representation: Data were collected from 1 station(s). Station Code(s): B13-8250.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-07 to 2013-08-07
Environmental Conditions:
QAPP Information: Bight Coastal Ecology Committee. 2013. Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual
 
Line of Evidence (LOE) for Decision ID 106083, Benzo(a)anthracene
Region 9     
Santa Margarita Lagoon
 
LOE ID: 135587
 
Pollutant: Benzo(a)anthracene
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Southern California Bight Project 2013 data for Santa Margarita Lagoon to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for Benz(a)anthracene .
Data Reference: Sediment, Toxicity data for the 2020/2022 integrated report in Region 9.
 
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 (Water Quality Control Plan, San Diego Basin).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: The evaluation guideline for Benz[a]anthrazene from MacDonald et al. 1996, which states that the probable effect level for Benz[a]anthrazene is 692.53 ug/Kg. (dw = Dry Weight)
Guideline Reference: Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278
 
Spatial Representation: Data were collected from 1 station(s). Station Code(s): B13-8253.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-07 to 2013-08-07
Environmental Conditions:
QAPP Information: Bight Coastal Ecology Committee. 2013. Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual
 
Line of Evidence (LOE) for Decision ID 106083, Benzo(a)anthracene
Region 9     
Santa Margarita Lagoon
 
LOE ID: 135547
 
Pollutant: Benzo(a)anthracene
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Marine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Southern California Bight Project 2013 data for Santa Margarita Lagoon to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for Benz(a)anthracene .
Data Reference: Sediment, Toxicity data for the 2020/2022 integrated report in Region 9.
 
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 (Water Quality Control Plan, San Diego Basin).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: The evaluation guideline for Benz[a]anthrazene from MacDonald et al. 1996, which states that the probable effect level for Benz[a]anthrazene is 692.53 ug/Kg. (dw = Dry Weight)
Guideline Reference: Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278
 
Spatial Representation: Data were collected from 1 station(s). Station Code(s): B13-8253.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-07 to 2013-08-07
Environmental Conditions:
QAPP Information: Bight Coastal Ecology Committee. 2013. Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual
 
Line of Evidence (LOE) for Decision ID 106083, Benzo(a)anthracene
Region 9     
Santa Margarita Lagoon
 
LOE ID: 135532
 
Pollutant: Benzo(a)anthracene
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Marine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Southern California Bight Project 2013 data for Santa Margarita Lagoon to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for Benz(a)anthracene .
Data Reference: Sediment, Toxicity data for the 2020/2022 integrated report in Region 9.
 
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 (Water Quality Control Plan, San Diego Basin).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: The evaluation guideline for Benz[a]anthrazene from MacDonald et al. 1996, which states that the probable effect level for Benz[a]anthrazene is 692.53 ug/Kg. (dw = Dry Weight)
Guideline Reference: Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278
 
Spatial Representation: Data were collected from 1 station(s). Station Code(s): B13-8250.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-07 to 2013-08-07
Environmental Conditions:
QAPP Information: Bight Coastal Ecology Committee. 2013. Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual
 
Line of Evidence (LOE) for Decision ID 106083, Benzo(a)anthracene
Region 9     
Santa Margarita Lagoon
 
LOE ID: 135463
 
Pollutant: Benzo(a)anthracene
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Southern California Bight Project 2013 data for Santa Margarita Lagoon to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for Benz(a)anthracene .
Data Reference: Sediment, Toxicity data for the 2020/2022 integrated report in Region 9.
 
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 (Water Quality Control Plan, San Diego Basin).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: The evaluation guideline for Benz[a]anthrazene from MacDonald et al. 1996, which states that the probable effect level for Benz[a]anthrazene is 692.53 ug/Kg. (dw = Dry Weight)
Guideline Reference: Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278
 
Spatial Representation: Data were collected from 1 station(s). Station Code(s): B13-8248.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-07 to 2013-08-07
Environmental Conditions:
QAPP Information: Bight Coastal Ecology Committee. 2013. Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual
 
Line of Evidence (LOE) for Decision ID 106083, Benzo(a)anthracene
Region 9     
Santa Margarita Lagoon
 
LOE ID: 135733
 
Pollutant: Benzo(a)anthracene
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Marine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Southern California Bight Project 2013 data for Santa Margarita Lagoon to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for Benz(a)anthracene .
Data Reference: Sediment, Toxicity data for the 2020/2022 integrated report in Region 9.
 
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 (Water Quality Control Plan, San Diego Basin).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: The evaluation guideline for Benz[a]anthrazene from MacDonald et al. 1996, which states that the probable effect level for Benz[a]anthrazene is 692.53 ug/Kg. (dw = Dry Weight)
Guideline Reference: Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278
 
Spatial Representation: Data were collected from 1 station(s). Station Code(s): B13-8248.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-07 to 2013-08-07
Environmental Conditions:
QAPP Information: Bight Coastal Ecology Committee. 2013. Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual
 
Line of Evidence (LOE) for Decision ID 106083, Benzo(a)anthracene
Region 9     
Santa Margarita Lagoon
 
LOE ID: 78331
 
Pollutant: Benzo(a)anthracene
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Bight data for Santa Margarita Lagoon to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Benzo(a)anthracene.
Data Reference: Data for Various Pollutants from Bight, 2008.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Water Quality Control Plan for the San Diego Basin (SDRWQCB 2007): All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life.
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: In marine and estuarine sediments the probable effect level (predictive of sediment toxicity for sediment-dwelling organisms) for Benzo(a)anthracene is 692.53 ng/g dry weight (MacDonald et al., 1996).
Guideline Reference: Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278
 
Spatial Representation: Data for this line of evidence for Santa Margarita Lagoon was collected at 1 monitoring site [ 902_6308 ]
Temporal Representation: Data was collected on a single day 8/29/2008.
Environmental Conditions: Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information: The Quality Assurance Project Plan from Southern California Bight was followed.
QAPP Information Reference(s): Quality Assurance Project Plan from Southern California Bight.
 
 
DECISION ID
106082
Region 9     
Santa Margarita Lagoon
 
Pollutant: Benzo(a)pyrene
Final Listing Decision: Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision: New Decision
Revision Status Revised
Impairment from Pollutant or Pollution: Pollutant
 
Regional Board Conclusion: Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.
 
Regional Board Decision Recommendation: After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
 
State Board Review of Regional Board Conclusion and Recommendation:
 
State Board Decision Recommendation:
 
 
Line of Evidence (LOE) for Decision ID 106082, Benzo(a)pyrene
Region 9     
Santa Margarita Lagoon
 
LOE ID: 135682
 
Pollutant: Benzo(a)pyrene
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Marine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Southern California Bight Project 2013 data for Santa Margarita Lagoon to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for Benzo(a)pyrene .
Data Reference: Sediment, Toxicity data for the 2020/2022 integrated report in Region 9.
 
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 (Water Quality Control Plan, San Diego Basin).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: The evaluation guideline for Benzo[a]pyrene from MacDonald et al. 1996, which states that the probable effect level for Benzo[a]pyrene is 763.22 ug/kg. (dw = Dry Weight)
Guideline Reference: Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278
 
Spatial Representation: Data were collected from 1 station(s). Station Code(s): B13-8253.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-07 to 2013-08-07
Environmental Conditions:
QAPP Information: Bight Coastal Ecology Committee. 2013. Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual
 
Line of Evidence (LOE) for Decision ID 106082, Benzo(a)pyrene
Region 9     
Santa Margarita Lagoon
 
LOE ID: 135595
 
Pollutant: Benzo(a)pyrene
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Southern California Bight Project 2013 data for Santa Margarita Lagoon to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for Benzo(a)pyrene .
Data Reference: Sediment, Toxicity data for the 2020/2022 integrated report in Region 9.
 
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 (Water Quality Control Plan, San Diego Basin).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: The evaluation guideline for Benzo[a]pyrene from MacDonald et al. 1996, which states that the probable effect level for Benzo[a]pyrene is 763.22 ug/kg. (dw = Dry Weight)
Guideline Reference: Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278
 
Spatial Representation: Data were collected from 1 station(s). Station Code(s): B13-8248.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-07 to 2013-08-07
Environmental Conditions:
QAPP Information: Bight Coastal Ecology Committee. 2013. Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual
 
Line of Evidence (LOE) for Decision ID 106082, Benzo(a)pyrene
Region 9     
Santa Margarita Lagoon
 
LOE ID: 135542
 
Pollutant: Benzo(a)pyrene
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Southern California Bight Project 2013 data for Santa Margarita Lagoon to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for Benzo(a)pyrene .
Data Reference: Sediment, Toxicity data for the 2020/2022 integrated report in Region 9.
 
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 (Water Quality Control Plan, San Diego Basin).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: The evaluation guideline for Benzo[a]pyrene from MacDonald et al. 1996, which states that the probable effect level for Benzo[a]pyrene is 763.22 ug/kg. (dw = Dry Weight)
Guideline Reference: Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278
 
Spatial Representation: Data were collected from 1 station(s). Station Code(s): B13-8253.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-07 to 2013-08-07
Environmental Conditions:
QAPP Information: Bight Coastal Ecology Committee. 2013. Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual
 
Line of Evidence (LOE) for Decision ID 106082, Benzo(a)pyrene
Region 9     
Santa Margarita Lagoon
 
LOE ID: 135725
 
Pollutant: Benzo(a)pyrene
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Marine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Southern California Bight Project 2013 data for Santa Margarita Lagoon to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for Benzo(a)pyrene .
Data Reference: Sediment, Toxicity data for the 2020/2022 integrated report in Region 9.
 
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 (Water Quality Control Plan, San Diego Basin).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: The evaluation guideline for Benzo[a]pyrene from MacDonald et al. 1996, which states that the probable effect level for Benzo[a]pyrene is 763.22 ug/kg. (dw = Dry Weight)
Guideline Reference: Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278
 
Spatial Representation: Data were collected from 1 station(s). Station Code(s): B13-8248.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-07 to 2013-08-07
Environmental Conditions:
QAPP Information: Bight Coastal Ecology Committee. 2013. Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual
 
Line of Evidence (LOE) for Decision ID 106082, Benzo(a)pyrene
Region 9     
Santa Margarita Lagoon
 
LOE ID: 135707
 
Pollutant: Benzo(a)pyrene
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Marine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Southern California Bight Project 2013 data for Santa Margarita Lagoon to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for Benzo(a)pyrene .
Data Reference: Sediment, Toxicity data for the 2020/2022 integrated report in Region 9.
 
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 (Water Quality Control Plan, San Diego Basin).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: The evaluation guideline for Benzo[a]pyrene from MacDonald et al. 1996, which states that the probable effect level for Benzo[a]pyrene is 763.22 ug/kg. (dw = Dry Weight)
Guideline Reference: Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278
 
Spatial Representation: Data were collected from 1 station(s). Station Code(s): B13-8250.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-07 to 2013-08-07
Environmental Conditions:
QAPP Information: Bight Coastal Ecology Committee. 2013. Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual
 
Line of Evidence (LOE) for Decision ID 106082, Benzo(a)pyrene
Region 9     
Santa Margarita Lagoon
 
LOE ID: 135576
 
Pollutant: Benzo(a)pyrene
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Southern California Bight Project 2013 data for Santa Margarita Lagoon to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for Benzo(a)pyrene .
Data Reference: Sediment, Toxicity data for the 2020/2022 integrated report in Region 9.
 
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 (Water Quality Control Plan, San Diego Basin).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: The evaluation guideline for Benzo[a]pyrene from MacDonald et al. 1996, which states that the probable effect level for Benzo[a]pyrene is 763.22 ug/kg. (dw = Dry Weight)
Guideline Reference: Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278
 
Spatial Representation: Data were collected from 1 station(s). Station Code(s): B13-8250.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-07 to 2013-08-07
Environmental Conditions:
QAPP Information: Bight Coastal Ecology Committee. 2013. Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual
 
 
DECISION ID
106084
Region 9     
Santa Margarita Lagoon
 
Pollutant: Cadmium
Final Listing Decision: Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision: Do Not List on 303(d) list (TMDL required list)(2018)
Revision Status Revised
Impairment from Pollutant or Pollution: Pollutant
 
Regional Board Conclusion: Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.
 
Regional Board Decision Recommendation: After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
 
State Board Review of Regional Board Conclusion and Recommendation:
 
State Board Decision Recommendation: After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.
 
 
Line of Evidence (LOE) for Decision ID 106084, Cadmium
Region 9     
Santa Margarita Lagoon
 
LOE ID: 135843
 
Pollutant: Cadmium
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Marine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Southern California Bight Project 2013 data for Santa Margarita Lagoon to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for Cadmium .
Data Reference: Sediment, Toxicity data for the 2020/2022 integrated report in Region 9.
 
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 (Water Quality Control Plan, San Diego Basin).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: The evaluation guideline for Cadmium from MacDonald et al. 1996, which states that the probable effect level for Cadmium is 4.21 ug/g. (dw = Dry Weight)
Guideline Reference: Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278
 
Spatial Representation: Data were collected from 1 station(s). Station Code(s): B13-8248.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-07 to 2013-08-07
Environmental Conditions:
QAPP Information: Bight Coastal Ecology Committee. 2013. Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual
 
Line of Evidence (LOE) for Decision ID 106084, Cadmium
Region 9     
Santa Margarita Lagoon
 
LOE ID: 135995
 
Pollutant: Cadmium
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Marine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Southern California Bight Project 2013 data for Santa Margarita Lagoon to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for Cadmium .
Data Reference: Sediment, Toxicity data for the 2020/2022 integrated report in Region 9.
 
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 (Water Quality Control Plan, San Diego Basin).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: The evaluation guideline for Cadmium from MacDonald et al. 1996, which states that the probable effect level for Cadmium is 4.21 ug/g. (dw = Dry Weight)
Guideline Reference: Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278
 
Spatial Representation: Data were collected from 1 station(s). Station Code(s): B13-8250.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-07 to 2013-08-07
Environmental Conditions:
QAPP Information: Bight Coastal Ecology Committee. 2013. Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual
 
Line of Evidence (LOE) for Decision ID 106084, Cadmium
Region 9     
Santa Margarita Lagoon
 
LOE ID: 136064
 
Pollutant: Cadmium
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Southern California Bight Project 2013 data for Santa Margarita Lagoon to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for Cadmium .
Data Reference: Sediment, Toxicity data for the 2020/2022 integrated report in Region 9.
 
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 (Water Quality Control Plan, San Diego Basin).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: The evaluation guideline for Cadmium from MacDonald et al. 1996, which states that the probable effect level for Cadmium is 4.21 ug/g. (dw = Dry Weight)
Guideline Reference: Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278
 
Spatial Representation: Data were collected from 1 station(s). Station Code(s): B13-8250.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-07 to 2013-08-07
Environmental Conditions:
QAPP Information: Bight Coastal Ecology Committee. 2013. Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual
 
Line of Evidence (LOE) for Decision ID 106084, Cadmium
Region 9     
Santa Margarita Lagoon
 
LOE ID: 78334
 
Pollutant: Cadmium
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Bight data for Santa Margarita Lagoon to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Cadmium.
Data Reference: Data for Various Pollutants from Bight, 2008.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Water Quality Control Plan for the San Diego Basin (SDRWQCB 2007): All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life.
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: In marine and estuarine sediments the probable effect level (predictive of sediment toxicity for sediment-dwelling organisms) for Cadmium is 4.21 ng/g dry weight (MacDonald et al., 1996).
Guideline Reference: Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278
 
Spatial Representation: Data for this line of evidence for Santa Margarita Lagoon was collected at 1 monitoring site [ 902_6308 ]
Temporal Representation: Data was collected on a single day 8/29/2008.
Environmental Conditions: Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information: The Quality Assurance Project Plan from Southern California Bight was followed.
QAPP Information Reference(s): Quality Assurance Project Plan from Southern California Bight.
 
Line of Evidence (LOE) for Decision ID 106084, Cadmium
Region 9     
Santa Margarita Lagoon
 
LOE ID: 136053
 
Pollutant: Cadmium
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Southern California Bight Project 2013 data for Santa Margarita Lagoon to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for Cadmium .
Data Reference: Sediment, Toxicity data for the 2020/2022 integrated report in Region 9.
 
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 (Water Quality Control Plan, San Diego Basin).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: The evaluation guideline for Cadmium from MacDonald et al. 1996, which states that the probable effect level for Cadmium is 4.21 ug/g. (dw = Dry Weight)
Guideline Reference: Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278
 
Spatial Representation: Data were collected from 1 station(s). Station Code(s): B13-8248.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-07 to 2013-08-07
Environmental Conditions:
QAPP Information: Bight Coastal Ecology Committee. 2013. Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual
 
Line of Evidence (LOE) for Decision ID 106084, Cadmium
Region 9     
Santa Margarita Lagoon
 
LOE ID: 136031
 
Pollutant: Cadmium
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Marine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Southern California Bight Project 2013 data for Santa Margarita Lagoon to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for Cadmium .
Data Reference: Sediment, Toxicity data for the 2020/2022 integrated report in Region 9.
 
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 (Water Quality Control Plan, San Diego Basin).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: The evaluation guideline for Cadmium from MacDonald et al. 1996, which states that the probable effect level for Cadmium is 4.21 ug/g. (dw = Dry Weight)
Guideline Reference: Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278
 
Spatial Representation: Data were collected from 1 station(s). Station Code(s): B13-8253.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-07 to 2013-08-07
Environmental Conditions:
QAPP Information: Bight Coastal Ecology Committee. 2013. Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual
 
Line of Evidence (LOE) for Decision ID 106084, Cadmium
Region 9     
Santa Margarita Lagoon
 
LOE ID: 135860
 
Pollutant: Cadmium
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Southern California Bight Project 2013 data for Santa Margarita Lagoon to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for Cadmium .
Data Reference: Sediment, Toxicity data for the 2020/2022 integrated report in Region 9.
 
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 (Water Quality Control Plan, San Diego Basin).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: The evaluation guideline for Cadmium from MacDonald et al. 1996, which states that the probable effect level for Cadmium is 4.21 ug/g. (dw = Dry Weight)
Guideline Reference: Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278
 
Spatial Representation: Data were collected from 1 station(s). Station Code(s): B13-8253.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-07 to 2013-08-07
Environmental Conditions:
QAPP Information: Bight Coastal Ecology Committee. 2013. Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual
 
 
DECISION ID
106085
Region 9     
Santa Margarita Lagoon
 
Pollutant: Chlordane
Final Listing Decision: Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision: Do Not List on 303(d) list (TMDL required list)(2018)
Revision Status Revised
Impairment from Pollutant or Pollution: Pollutant
 
Regional Board Conclusion: Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.
 
Regional Board Decision Recommendation: After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
 
State Board Review of Regional Board Conclusion and Recommendation:
 
State Board Decision Recommendation: After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.
 
 
Line of Evidence (LOE) for Decision ID 106085, Chlordane
Region 9     
Santa Margarita Lagoon
 
LOE ID: 78335
 
Pollutant: Chlordane
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Bight data for Santa Margarita Lagoon to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Chlordane, Total.
Data Reference: Data for Various Pollutants from Bight, 2008.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Water Quality Control Plan for the San Diego Basin (SDRWQCB 2007): All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life.
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: In marine and estuarine sediments the effects range median (predictive of sediment toxicity for sediment-dwelling organisms) for Total Chlordane is 6 ng/g dry weight (Long and Morgan, 1990).
Guideline Reference: The potential for biological effects of sediment-sorbed contaminants tested in the National Status of Trends Program. NOAA Technical Memorandum NOS OMA 52. Seattle, WA: National Oceanic and Atmospheric Administration
 
Spatial Representation: Data for this line of evidence for Santa Margarita Lagoon was collected at 1 monitoring site [ 902_6308 ]
Temporal Representation: Data was collected on a single day 8/29/2008.
Environmental Conditions: Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information: The Quality Assurance Project Plan from Southern California Bight was followed.
QAPP Information Reference(s): Quality Assurance Project Plan from Southern California Bight.
 
Line of Evidence (LOE) for Decision ID 106085, Chlordane
Region 9     
Santa Margarita Lagoon
 
LOE ID: 135797
 
Pollutant: Chlordane
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Southern California Bight Project 2013 data for Santa Margarita Lagoon to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for Chlordane .
Data Reference: Sediment, Toxicity data for the 2020/2022 integrated report in Region 9.
 
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 (Water Quality Control Plan, San Diego Basin).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: The evaluation guideline used in this assessment comes from Long and Morgan, 1990, and is the Effects Range Median (ERM) value of 6 ng/g DW
Guideline Reference: The potential for biological effects of sediment-sorbed contaminants tested in the National Status of Trends Program. NOAA Technical Memorandum NOS OMA 52. Seattle, WA: National Oceanic and Atmospheric Administration
 
Spatial Representation: Data were collected from 1 station(s). Station Code(s): B13-8248.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-07 to 2013-08-07
Environmental Conditions:
QAPP Information: Bight Coastal Ecology Committee. 2013. Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual
 
Line of Evidence (LOE) for Decision ID 106085, Chlordane
Region 9     
Santa Margarita Lagoon
 
LOE ID: 139180
 
Pollutant: Chlordane
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Marine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Southern California Bight Project 2013 data for Santa Margarita Lagoon to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for Total Chlordanes .
Data Reference: Sediment, Toxicity data for the 2020/2022 integrated report in Region 9.
 
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 (Water Quality Control Plan, San Diego Basin).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: In marine and estuarine sediments the effects range median (predictive of sediment toxicity for sediment-dwelling organisms) for Total Chlordane is 6 ng/g dry weight (Long and Morgan, 1990).
Guideline Reference: The potential for biological effects of sediment-sorbed contaminants tested in the National Status of Trends Program. NOAA Technical Memorandum NOS OMA 52. Seattle, WA: National Oceanic and Atmospheric Administration
 
Spatial Representation: Data were collected from 1 station(s). Station Code(s): B13-8248.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-07 to 2013-08-07
Environmental Conditions:
QAPP Information: Bight Coastal Ecology Committee. 2013. Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual
 
Line of Evidence (LOE) for Decision ID 106085, Chlordane
Region 9     
Santa Margarita Lagoon
 
LOE ID: 139214
 
Pollutant: Chlordane
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Southern California Bight Project 2013 data for Santa Margarita Lagoon to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for Total Chlordanes .
Data Reference: Sediment, Toxicity data for the 2020/2022 integrated report in Region 9.
 
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 (Water Quality Control Plan, San Diego Basin).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: In marine and estuarine sediments the effects range median (predictive of sediment toxicity for sediment-dwelling organisms) for Total Chlordane is 6 ng/g dry weight (Long and Morgan, 1990).
Guideline Reference: The potential for biological effects of sediment-sorbed contaminants tested in the National Status of Trends Program. NOAA Technical Memorandum NOS OMA 52. Seattle, WA: National Oceanic and Atmospheric Administration
 
Spatial Representation: Data were collected from 1 station(s). Station Code(s): B13-8250.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-07 to 2013-08-07
Environmental Conditions:
QAPP Information: Bight Coastal Ecology Committee. 2013. Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual
 
Line of Evidence (LOE) for Decision ID 106085, Chlordane
Region 9     
Santa Margarita Lagoon
 
LOE ID: 135773
 
Pollutant: Chlordane
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Marine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Southern California Bight Project 2013 data for Santa Margarita Lagoon to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for Chlordane .
Data Reference: Sediment, Toxicity data for the 2020/2022 integrated report in Region 9.
 
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 (Water Quality Control Plan, San Diego Basin).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: The evaluation guideline used in this assessment comes from Long and Morgan, 1990, and is the Effects Range Median (ERM) value of 6 ng/g DW
Guideline Reference: The potential for biological effects of sediment-sorbed contaminants tested in the National Status of Trends Program. NOAA Technical Memorandum NOS OMA 52. Seattle, WA: National Oceanic and Atmospheric Administration
 
Spatial Representation: Data were collected from 1 station(s). Station Code(s): B13-8248.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-07 to 2013-08-07
Environmental Conditions:
QAPP Information: Bight Coastal Ecology Committee. 2013. Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual
 
Line of Evidence (LOE) for Decision ID 106085, Chlordane
Region 9     
Santa Margarita Lagoon
 
LOE ID: 139024
 
Pollutant: Chlordane
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Marine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Southern California Bight Project 2013 data for Santa Margarita Lagoon to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for Total Chlordanes .
Data Reference: Sediment, Toxicity data for the 2020/2022 integrated report in Region 9.
 
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 (Water Quality Control Plan, San Diego Basin).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: In marine and estuarine sediments the effects range median (predictive of sediment toxicity for sediment-dwelling organisms) for Total Chlordane is 6 ng/g dry weight (Long and Morgan, 1990).
Guideline Reference: The potential for biological effects of sediment-sorbed contaminants tested in the National Status of Trends Program. NOAA Technical Memorandum NOS OMA 52. Seattle, WA: National Oceanic and Atmospheric Administration
 
Spatial Representation: Data were collected from 1 station(s). Station Code(s): B13-8253.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-07 to 2013-08-07
Environmental Conditions:
QAPP Information: Bight Coastal Ecology Committee. 2013. Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual
 
Line of Evidence (LOE) for Decision ID 106085, Chlordane
Region 9     
Santa Margarita Lagoon
 
LOE ID: 136058
 
Pollutant: Chlordane
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Southern California Bight Project 2013 data for Santa Margarita Lagoon to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for Chlordane .
Data Reference: Sediment, Toxicity data for the 2020/2022 integrated report in Region 9.
 
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 (Water Quality Control Plan, San Diego Basin).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: The evaluation guideline used in this assessment comes from Long and Morgan, 1990, and is the Effects Range Median (ERM) value of 6 ng/g DW
Guideline Reference: The potential for biological effects of sediment-sorbed contaminants tested in the National Status of Trends Program. NOAA Technical Memorandum NOS OMA 52. Seattle, WA: National Oceanic and Atmospheric Administration
 
Spatial Representation: Data were collected from 1 station(s). Station Code(s): B13-8250.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-07 to 2013-08-07
Environmental Conditions:
QAPP Information: Bight Coastal Ecology Committee. 2013. Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual
 
Line of Evidence (LOE) for Decision ID 106085, Chlordane
Region 9     
Santa Margarita Lagoon
 
LOE ID: 136023
 
Pollutant: Chlordane
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Southern California Bight Project 2013 data for Santa Margarita Lagoon to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for Chlordane .
Data Reference: Sediment, Toxicity data for the 2020/2022 integrated report in Region 9.
 
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 (Water Quality Control Plan, San Diego Basin).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: The evaluation guideline used in this assessment comes from Long and Morgan, 1990, and is the Effects Range Median (ERM) value of 6 ng/g DW
Guideline Reference: The potential for biological effects of sediment-sorbed contaminants tested in the National Status of Trends Program. NOAA Technical Memorandum NOS OMA 52. Seattle, WA: National Oceanic and Atmospheric Administration
 
Spatial Representation: Data were collected from 1 station(s). Station Code(s): B13-8253.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-07 to 2013-08-07
Environmental Conditions:
QAPP Information: Bight Coastal Ecology Committee. 2013. Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual
 
Line of Evidence (LOE) for Decision ID 106085, Chlordane
Region 9     
Santa Margarita Lagoon
 
LOE ID: 139268
 
Pollutant: Chlordane
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Marine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Southern California Bight Project 2013 data for Santa Margarita Lagoon to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for Total Chlordanes .
Data Reference: Sediment, Toxicity data for the 2020/2022 integrated report in Region 9.
 
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 (Water Quality Control Plan, San Diego Basin).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: In marine and estuarine sediments the effects range median (predictive of sediment toxicity for sediment-dwelling organisms) for Total Chlordane is 6 ng/g dry weight (Long and Morgan, 1990).
Guideline Reference: The potential for biological effects of sediment-sorbed contaminants tested in the National Status of Trends Program. NOAA Technical Memorandum NOS OMA 52. Seattle, WA: National Oceanic and Atmospheric Administration
 
Spatial Representation: Data were collected from 1 station(s). Station Code(s): B13-8250.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-07 to 2013-08-07
Environmental Conditions:
QAPP Information: Bight Coastal Ecology Committee. 2013. Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual
 
Line of Evidence (LOE) for Decision ID 106085, Chlordane
Region 9     
Santa Margarita Lagoon
 
LOE ID: 135908
 
Pollutant: Chlordane
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Marine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Southern California Bight Project 2013 data for Santa Margarita Lagoon to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for Chlordane .
Data Reference: Sediment, Toxicity data for the 2020/2022 integrated report in Region 9.
 
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 (Water Quality Control Plan, San Diego Basin).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: The evaluation guideline used in this assessment comes from Long and Morgan, 1990, and is the Effects Range Median (ERM) value of 6 ng/g DW
Guideline Reference: The potential for biological effects of sediment-sorbed contaminants tested in the National Status of Trends Program. NOAA Technical Memorandum NOS OMA 52. Seattle, WA: National Oceanic and Atmospheric Administration
 
Spatial Representation: Data were collected from 1 station(s). Station Code(s): B13-8253.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-07 to 2013-08-07
Environmental Conditions:
QAPP Information: Bight Coastal Ecology Committee. 2013. Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual
 
Line of Evidence (LOE) for Decision ID 106085, Chlordane
Region 9     
Santa Margarita Lagoon
 
LOE ID: 139178
 
Pollutant: Chlordane
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Southern California Bight Project 2013 data for Santa Margarita Lagoon to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for Total Chlordanes .
Data Reference: Sediment, Toxicity data for the 2020/2022 integrated report in Region 9.
 
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 (Water Quality Control Plan, San Diego Basin).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: In marine and estuarine sediments the effects range median (predictive of sediment toxicity for sediment-dwelling organisms) for Total Chlordane is 6 ng/g dry weight (Long and Morgan, 1990).
Guideline Reference: The potential for biological effects of sediment-sorbed contaminants tested in the National Status of Trends Program. NOAA Technical Memorandum NOS OMA 52. Seattle, WA: National Oceanic and Atmospheric Administration
 
Spatial Representation: Data were collected from 1 station(s). Station Code(s): B13-8253.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-07 to 2013-08-07
Environmental Conditions:
QAPP Information: Bight Coastal Ecology Committee. 2013. Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual
 
Line of Evidence (LOE) for Decision ID 106085, Chlordane
Region 9     
Santa Margarita Lagoon
 
LOE ID: 139140
 
Pollutant: Chlordane
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Southern California Bight Project 2013 data for Santa Margarita Lagoon to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for Total Chlordanes .
Data Reference: Sediment, Toxicity data for the 2020/2022 integrated report in Region 9.
 
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 (Water Quality Control Plan, San Diego Basin).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: In marine and estuarine sediments the effects range median (predictive of sediment toxicity for sediment-dwelling organisms) for Total Chlordane is 6 ng/g dry weight (Long and Morgan, 1990).
Guideline Reference: The potential for biological effects of sediment-sorbed contaminants tested in the National Status of Trends Program. NOAA Technical Memorandum NOS OMA 52. Seattle, WA: National Oceanic and Atmospheric Administration
 
Spatial Representation: Data were collected from 1 station(s). Station Code(s): B13-8248.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-07 to 2013-08-07
Environmental Conditions:
QAPP Information: Bight Coastal Ecology Committee. 2013. Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual
 
Line of Evidence (LOE) for Decision ID 106085, Chlordane
Region 9     
Santa Margarita Lagoon
 
LOE ID: 135942
 
Pollutant: Chlordane
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Marine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Southern California Bight Project 2013 data for Santa Margarita Lagoon to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for Chlordane .
Data Reference: Sediment, Toxicity data for the 2020/2022 integrated report in Region 9.
 
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 (Water Quality Control Plan, San Diego Basin).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: The evaluation guideline used in this assessment comes from Long and Morgan, 1990, and is the Effects Range Median (ERM) value of 6 ng/g DW
Guideline Reference: The potential for biological effects of sediment-sorbed contaminants tested in the National Status of Trends Program. NOAA Technical Memorandum NOS OMA 52. Seattle, WA: National Oceanic and Atmospheric Administration
 
Spatial Representation: Data were collected from 1 station(s). Station Code(s): B13-8250.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-07 to 2013-08-07
Environmental Conditions:
QAPP Information: Bight Coastal Ecology Committee. 2013. Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual
 
 
DECISION ID
106096
Region 9     
Santa Margarita Lagoon
 
Pollutant: Chromium
Final Listing Decision: Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision: Do Not List on 303(d) list (TMDL required list)(2018)
Revision Status Revised
Impairment from Pollutant or Pollution: Pollutant
 
Regional Board Conclusion: Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.
 
Regional Board Decision Recommendation: After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
 
State Board Review of Regional Board Conclusion and Recommendation:
 
State Board Decision Recommendation: After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.
 
 
Line of Evidence (LOE) for Decision ID 106096, Chromium
Region 9     
Santa Margarita Lagoon
 
LOE ID: 136253
 
Pollutant: Chromium
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Southern California Bight Project 2013 data for Santa Margarita Lagoon to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for Chromium .
Data Reference: Sediment, Toxicity data for the 2020/2022 integrated report in Region 9.
 
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 (Water Quality Control Plan, San Diego Basin).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: The value used in this assessment comes from Long et al., 1995, is the effects range median (ERM) value of 370 PPM (ug/g)
Guideline Reference: Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278
 
Spatial Representation: Data were collected from 1 station(s). Station Code(s): B13-8248.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-07 to 2013-08-07
Environmental Conditions:
QAPP Information: Bight Coastal Ecology Committee. 2013. Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual
 
Line of Evidence (LOE) for Decision ID 106096, Chromium
Region 9     
Santa Margarita Lagoon
 
LOE ID: 136112
 
Pollutant: Chromium
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Southern California Bight Project 2013 data for Santa Margarita Lagoon to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for Chromium .
Data Reference: Sediment, Toxicity data for the 2020/2022 integrated report in Region 9.
 
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 (Water Quality Control Plan, San Diego Basin).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: The value used in this assessment comes from Long et al., 1995, is the effects range median (ERM) value of 370 PPM (ug/g)
Guideline Reference: Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278
 
Spatial Representation: Data were collected from 1 station(s). Station Code(s): B13-8253.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-07 to 2013-08-07
Environmental Conditions:
QAPP Information: Bight Coastal Ecology Committee. 2013. Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual
 
Line of Evidence (LOE) for Decision ID 106096, Chromium
Region 9     
Santa Margarita Lagoon
 
LOE ID: 136176
 
Pollutant: Chromium
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Marine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Southern California Bight Project 2013 data for Santa Margarita Lagoon to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for Chromium .
Data Reference: Sediment, Toxicity data for the 2020/2022 integrated report in Region 9.
 
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 (Water Quality Control Plan, San Diego Basin).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: The value used in this assessment comes from Long et al., 1995, is the effects range median (ERM) value of 370 PPM (ug/g)
Guideline Reference: Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278
 
Spatial Representation: Data were collected from 1 station(s). Station Code(s): B13-8253.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-07 to 2013-08-07
Environmental Conditions:
QAPP Information: Bight Coastal Ecology Committee. 2013. Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual
 
Line of Evidence (LOE) for Decision ID 106096, Chromium
Region 9     
Santa Margarita Lagoon
 
LOE ID: 136237
 
Pollutant: Chromium
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Southern California Bight Project 2013 data for Santa Margarita Lagoon to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for Chromium .
Data Reference: Sediment, Toxicity data for the 2020/2022 integrated report in Region 9.
 
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 (Water Quality Control Plan, San Diego Basin).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: The value used in this assessment comes from Long et al., 1995, is the effects range median (ERM) value of 370 PPM (ug/g)
Guideline Reference: Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278
 
Spatial Representation: Data were collected from 1 station(s). Station Code(s): B13-8250.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-07 to 2013-08-07
Environmental Conditions:
QAPP Information: Bight Coastal Ecology Committee. 2013. Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual
 
Line of Evidence (LOE) for Decision ID 106096, Chromium
Region 9     
Santa Margarita Lagoon
 
LOE ID: 136153
 
Pollutant: Chromium
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Marine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Southern California Bight Project 2013 data for Santa Margarita Lagoon to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for Chromium .
Data Reference: Sediment, Toxicity data for the 2020/2022 integrated report in Region 9.
 
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 (Water Quality Control Plan, San Diego Basin).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: The value used in this assessment comes from Long et al., 1995, is the effects range median (ERM) value of 370 PPM (ug/g)
Guideline Reference: Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278
 
Spatial Representation: Data were collected from 1 station(s). Station Code(s): B13-8248.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-07 to 2013-08-07
Environmental Conditions:
QAPP Information: Bight Coastal Ecology Committee. 2013. Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual
 
Line of Evidence (LOE) for Decision ID 106096, Chromium
Region 9     
Santa Margarita Lagoon
 
LOE ID: 78336
 
Pollutant: Chromium
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Bight data for Santa Margarita Lagoon to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Chromium.
Data Reference: Data for Various Pollutants from Bight, 2008.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Water Quality Control Plan for the San Diego Basin (SDRWQCB 2007): All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life.
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: In marine and estuarine sediments the effects range median (predictive of sediment toxicity for sediment-dwelling organisms) for Chromium is 370 ug/g dry weight (Long et al., 1995).
Guideline Reference: Incidence of adverse biological effects within ranges of chemical concentrations in marine and estuary sediments. Environmental Management. 19, (1): 81-97
 
Spatial Representation: Data for this line of evidence for Santa Margarita Lagoon was collected at 1 monitoring site [ 902_6308 ]
Temporal Representation: Data was collected on a single day 8/29/2008.
Environmental Conditions: Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information: The Quality Assurance Project Plan from Southern California Bight was followed.
QAPP Information Reference(s): Quality Assurance Project Plan from Southern California Bight.
 
Line of Evidence (LOE) for Decision ID 106096, Chromium
Region 9     
Santa Margarita Lagoon
 
LOE ID: 136196
 
Pollutant: Chromium
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Marine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Southern California Bight Project 2013 data for Santa Margarita Lagoon to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for Chromium .
Data Reference: Sediment, Toxicity data for the 2020/2022 integrated report in Region 9.
 
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 (Water Quality Control Plan, San Diego Basin).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: The value used in this assessment comes from Long et al., 1995, is the effects range median (ERM) value of 370 PPM (ug/g)
Guideline Reference: Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278
 
Spatial Representation: Data were collected from 1 station(s). Station Code(s): B13-8250.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-07 to 2013-08-07
Environmental Conditions:
QAPP Information: Bight Coastal Ecology Committee. 2013. Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual
 
 
DECISION ID
106086
Region 9     
Santa Margarita Lagoon
 
Pollutant: Chrysene (C1-C4)
Final Listing Decision: Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision: Do Not List on 303(d) list (TMDL required list)(2018)
Revision Status Revised
Impairment from Pollutant or Pollution: Pollutant
 
Regional Board Conclusion: Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.
 
Regional Board Decision Recommendation: After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
 
State Board Review of Regional Board Conclusion and Recommendation:
 
State Board Decision Recommendation: After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.
 
 
Line of Evidence (LOE) for Decision ID 106086, Chrysene (C1-C4)
Region 9     
Santa Margarita Lagoon
 
LOE ID: 78337
 
Pollutant: Chrysene (C1-C4)
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Bight data for Santa Margarita Lagoon to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Chrysene.
Data Reference: Data for Various Pollutants from Bight, 2008.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Water Quality Control Plan for the San Diego Basin (SDRWQCB 2007): All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life.
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: In marine and estuarine sediments the probable effect level (predictive of sediment toxicity for sediment-dwelling organisms) for Chrysene is 845.98 ng/g dry weight (MacDonald et al., 1996).
Guideline Reference: Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278
 
Spatial Representation: Data for this line of evidence for Santa Margarita Lagoon was collected at 1 monitoring site [ 902_6308 ]
Temporal Representation: Data was collected on a single day 8/29/2008.
Environmental Conditions: Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information: The Quality Assurance Project Plan from Southern California Bight was followed.
QAPP Information Reference(s): Quality Assurance Project Plan from Southern California Bight.
 
Line of Evidence (LOE) for Decision ID 106086, Chrysene (C1-C4)
Region 9     
Santa Margarita Lagoon
 
LOE ID: 136145
 
Pollutant: Chrysene (C1-C4)
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Southern California Bight Project 2013 data for Santa Margarita Lagoon to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for Chrysene .
Data Reference: Sediment, Toxicity data for the 2020/2022 integrated report in Region 9.
 
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 (Water Quality Control Plan, San Diego Basin).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: The evaluation guideline for Chrysene from MacDonald et al. 1996, which states that the probable effect level for Chrysene is 845.98 ng/g. (dw = Dry Weight)
Guideline Reference: Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278
 
Spatial Representation: Data were collected from 1 station(s). Station Code(s): B13-8248.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-07 to 2013-08-07
Environmental Conditions:
QAPP Information: Bight Coastal Ecology Committee. 2013. Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual
 
Line of Evidence (LOE) for Decision ID 106086, Chrysene (C1-C4)
Region 9     
Santa Margarita Lagoon
 
LOE ID: 136190
 
Pollutant: Chrysene (C1-C4)
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Marine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Southern California Bight Project 2013 data for Santa Margarita Lagoon to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for Chrysene .
Data Reference: Sediment, Toxicity data for the 2020/2022 integrated report in Region 9.
 
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 (Water Quality Control Plan, San Diego Basin).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: The evaluation guideline for Chrysene from MacDonald et al. 1996, which states that the probable effect level for Chrysene is 845.98 ug/kg. (dw = Dry Weight)
Guideline Reference: Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278
 
Spatial Representation: Data were collected from 1 station(s). Station Code(s): B13-8253.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-07 to 2013-08-07
Environmental Conditions:
QAPP Information: Bight Coastal Ecology Committee. 2013. Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual
 
Line of Evidence (LOE) for Decision ID 106086, Chrysene (C1-C4)
Region 9     
Santa Margarita Lagoon
 
LOE ID: 136345
 
Pollutant: Chrysene (C1-C4)
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Southern California Bight Project 2013 data for Santa Margarita Lagoon to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for Chrysene .
Data Reference: Sediment, Toxicity data for the 2020/2022 integrated report in Region 9.
 
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 (Water Quality Control Plan, San Diego Basin).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: The evaluation guideline for Chrysene from MacDonald et al. 1996, which states that the probable effect level for Chrysene is 845.98 ng/g. (dw = Dry Weight)
Guideline Reference: Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278
 
Spatial Representation: Data were collected from 1 station(s). Station Code(s): B13-8250.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-07 to 2013-08-07
Environmental Conditions:
QAPP Information: Bight Coastal Ecology Committee. 2013. Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual
 
Line of Evidence (LOE) for Decision ID 106086, Chrysene (C1-C4)
Region 9     
Santa Margarita Lagoon
 
LOE ID: 136191
 
Pollutant: Chrysene (C1-C4)
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Southern California Bight Project 2013 data for Santa Margarita Lagoon to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for Chrysene .
Data Reference: Sediment, Toxicity data for the 2020/2022 integrated report in Region 9.
 
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 (Water Quality Control Plan, San Diego Basin).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: The evaluation guideline for Chrysene from MacDonald et al. 1996, which states that the probable effect level for Chrysene is 845.98 ng/g. (dw = Dry Weight)
Guideline Reference: Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278
 
Spatial Representation: Data were collected from 1 station(s). Station Code(s): B13-8253.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-07 to 2013-08-07
Environmental Conditions:
QAPP Information: Bight Coastal Ecology Committee. 2013. Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual
 
Line of Evidence (LOE) for Decision ID 106086, Chrysene (C1-C4)
Region 9     
Santa Margarita Lagoon
 
LOE ID: 136169
 
Pollutant: Chrysene (C1-C4)
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Marine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Southern California Bight Project 2013 data for Santa Margarita Lagoon to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for Chrysene .
Data Reference: Sediment, Toxicity data for the 2020/2022 integrated report in Region 9.
 
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 (Water Quality Control Plan, San Diego Basin).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: The evaluation guideline for Chrysene from MacDonald et al. 1996, which states that the probable effect level for Chrysene is 845.98 ug/kg. (dw = Dry Weight)
Guideline Reference: Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278
 
Spatial Representation: Data were collected from 1 station(s). Station Code(s): B13-8248.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-07 to 2013-08-07
Environmental Conditions:
QAPP Information: Bight Coastal Ecology Committee. 2013. Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual
 
Line of Evidence (LOE) for Decision ID 106086, Chrysene (C1-C4)
Region 9     
Santa Margarita Lagoon
 
LOE ID: 136167
 
Pollutant: Chrysene (C1-C4)
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Marine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Southern California Bight Project 2013 data for Santa Margarita Lagoon to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for Chrysene .
Data Reference: Sediment, Toxicity data for the 2020/2022 integrated report in Region 9.
 
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 (Water Quality Control Plan, San Diego Basin).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: The evaluation guideline for Chrysene from MacDonald et al. 1996, which states that the probable effect level for Chrysene is 845.98 ug/kg. (dw = Dry Weight)
Guideline Reference: Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278
 
Spatial Representation: Data were collected from 1 station(s). Station Code(s): B13-8250.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-07 to 2013-08-07
Environmental Conditions:
QAPP Information: Bight Coastal Ecology Committee. 2013. Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual
 
 
DECISION ID
106087
Region 9     
Santa Margarita Lagoon
 
Pollutant: Copper
Final Listing Decision: Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision: Do Not List on 303(d) list (TMDL required list)(2018)
Revision Status Revised
Impairment from Pollutant or Pollution: Pollutant
 
Regional Board Conclusion: Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.
 
Regional Board Decision Recommendation: After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
 
State Board Review of Regional Board Conclusion and Recommendation:
 
State Board Decision Recommendation: After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.
 
 
Line of Evidence (LOE) for Decision ID 106087, Copper
Region 9     
Santa Margarita Lagoon
 
LOE ID: 136429
 
Pollutant: Copper
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Southern California Bight Project 2013 data for Santa Margarita Lagoon to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for Copper .
Data Reference: Sediment, Toxicity data for the 2020/2022 integrated report in Region 9.
 
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 (Water Quality Control Plan, San Diego Basin).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: The value used in this assessment comes from Long et al., 1995, is the effects range median (ERM) value of 270 PPM (ug/g)
Guideline Reference: Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278
 
Spatial Representation: Data were collected from 1 station(s). Station Code(s): B13-8250.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-07 to 2013-08-07
Environmental Conditions:
QAPP Information: Bight Coastal Ecology Committee. 2013. Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual
 
Line of Evidence (LOE) for Decision ID 106087, Copper
Region 9     
Santa Margarita Lagoon
 
LOE ID: 78338
 
Pollutant: Copper
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Bight data for Santa Margarita Lagoon to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Copper.
Data Reference: Data for Various Pollutants from Bight, 2008.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Water Quality Control Plan for the San Diego Basin (SDRWQCB 2007): All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life.
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: In marine and estuarine sediments the effects range median (predictive of sediment toxicity for sediment-dwelling organisms) for Copper is 270 ug/g dry weight (Long et al., 1995).
Guideline Reference: Incidence of adverse biological effects within ranges of chemical concentrations in marine and estuary sediments. Environmental Management. 19, (1): 81-97
 
Spatial Representation: Data for this line of evidence for Santa Margarita Lagoon was collected at 1 monitoring site [ 902_6308 ]
Temporal Representation: Data was collected on a single day 8/29/2008.
Environmental Conditions: Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information: The Quality Assurance Project Plan from Southern California Bight was followed.
QAPP Information Reference(s): Quality Assurance Project Plan from Southern California Bight.
 
Line of Evidence (LOE) for Decision ID 106087, Copper
Region 9     
Santa Margarita Lagoon
 
LOE ID: 136671
 
Pollutant: Copper
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Marine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Southern California Bight Project 2013 data for Santa Margarita Lagoon to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for Copper .
Data Reference: Sediment, Toxicity data for the 2020/2022 integrated report in Region 9.
 
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 (Water Quality Control Plan, San Diego Basin).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: The value used in this assessment comes from Long et al., 1995, is the effects range median (ERM) value of 270 PPM (ug/g)
Guideline Reference: Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278
 
Spatial Representation: Data were collected from 1 station(s). Station Code(s): B13-8248.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-07 to 2013-08-07
Environmental Conditions:
QAPP Information: Bight Coastal Ecology Committee. 2013. Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual
 
Line of Evidence (LOE) for Decision ID 106087, Copper
Region 9     
Santa Margarita Lagoon
 
LOE ID: 136482
 
Pollutant: Copper
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Southern California Bight Project 2013 data for Santa Margarita Lagoon to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for Copper .
Data Reference: Sediment, Toxicity data for the 2020/2022 integrated report in Region 9.
 
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 (Water Quality Control Plan, San Diego Basin).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: The value used in this assessment comes from Long et al., 1995, is the effects range median (ERM) value of 270 PPM (ug/g)
Guideline Reference: Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278
 
Spatial Representation: Data were collected from 1 station(s). Station Code(s): B13-8248.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-07 to 2013-08-07
Environmental Conditions:
QAPP Information: Bight Coastal Ecology Committee. 2013. Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual
 
Line of Evidence (LOE) for Decision ID 106087, Copper
Region 9     
Santa Margarita Lagoon
 
LOE ID: 136633
 
Pollutant: Copper
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Southern California Bight Project 2013 data for Santa Margarita Lagoon to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for Copper .
Data Reference: Sediment, Toxicity data for the 2020/2022 integrated report in Region 9.
 
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 (Water Quality Control Plan, San Diego Basin).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: The value used in this assessment comes from Long et al., 1995, is the effects range median (ERM) value of 270 PPM (ug/g)
Guideline Reference: Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278
 
Spatial Representation: Data were collected from 1 station(s). Station Code(s): B13-8253.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-07 to 2013-08-07
Environmental Conditions:
QAPP Information: Bight Coastal Ecology Committee. 2013. Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual
 
Line of Evidence (LOE) for Decision ID 106087, Copper
Region 9     
Santa Margarita Lagoon
 
LOE ID: 136485
 
Pollutant: Copper
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Marine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Southern California Bight Project 2013 data for Santa Margarita Lagoon to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for Copper .
Data Reference: Sediment, Toxicity data for the 2020/2022 integrated report in Region 9.
 
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 (Water Quality Control Plan, San Diego Basin).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: The value used in this assessment comes from Long et al., 1995, is the effects range median (ERM) value of 270 PPM (ug/g)
Guideline Reference: Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278
 
Spatial Representation: Data were collected from 1 station(s). Station Code(s): B13-8253.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-07 to 2013-08-07
Environmental Conditions:
QAPP Information: Bight Coastal Ecology Committee. 2013. Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual
 
Line of Evidence (LOE) for Decision ID 106087, Copper
Region 9     
Santa Margarita Lagoon
 
LOE ID: 136546
 
Pollutant: Copper
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Marine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Southern California Bight Project 2013 data for Santa Margarita Lagoon to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for Copper .
Data Reference: Sediment, Toxicity data for the 2020/2022 integrated report in Region 9.
 
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 (Water Quality Control Plan, San Diego Basin).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: The value used in this assessment comes from Long et al., 1995, is the effects range median (ERM) value of 270 PPM (ug/g)
Guideline Reference: Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278
 
Spatial Representation: Data were collected from 1 station(s). Station Code(s): B13-8250.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-07 to 2013-08-07
Environmental Conditions:
QAPP Information: Bight Coastal Ecology Committee. 2013. Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual
 
 
DECISION ID
106088
Region 9     
Santa Margarita Lagoon
 
Pollutant: Dibenz[a,h]anthracene
Final Listing Decision: Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision: Do Not List on 303(d) list (TMDL required list)(2018)
Revision Status Revised
Impairment from Pollutant or Pollution: Pollutant
 
Regional Board Conclusion: Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.
 
Regional Board Decision Recommendation: After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
 
State Board Review of Regional Board Conclusion and Recommendation:
 
State Board Decision Recommendation: After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.
 
 
Line of Evidence (LOE) for Decision ID 106088, Dibenz[a,h]anthracene
Region 9     
Santa Margarita Lagoon
 
LOE ID: 78339
 
Pollutant: Dibenz[a,h]anthracene
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Bight data for Santa Margarita Lagoon to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Dibenzo(a, h)anthracene.
Data Reference: Data for Various Pollutants from Bight, 2008.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Water Quality Control Plan for the San Diego Basin (SDRWQCB 2007): All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life.
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: In marine and estuarine sediments the effects range median (predictive of sediment toxicity for sediment-dwelling organisms) for Dibenzo(a, h)anthracene is 260 ng/g dry weight (Long et al., 1995).
Guideline Reference: Incidence of adverse biological effects within ranges of chemical concentrations in marine and estuary sediments. Environmental Management. 19, (1): 81-97
 
Spatial Representation: Data for this line of evidence for Santa Margarita Lagoon was collected at 1 monitoring site [ 902_6308 ]
Temporal Representation: Data was collected on a single day 8/29/2008.
Environmental Conditions: Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information: The Quality Assurance Project Plan from Southern California Bight was followed.
QAPP Information Reference(s): Quality Assurance Project Plan from Southern California Bight.
 
Line of Evidence (LOE) for Decision ID 106088, Dibenz[a,h]anthracene
Region 9     
Santa Margarita Lagoon
 
LOE ID: 137019
 
Pollutant: Dibenz[a,h]anthracene
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Southern California Bight Project 2013 data for Santa Margarita Lagoon to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for Dibenz(a,h)anthracene .
Data Reference: Sediment, Toxicity data for the 2020/2022 integrated report in Region 9.
 
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 (Water Quality Control Plan, San Diego Basin).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: The value used in this assessment comes from Long et al., 1995, is the Effects Range Median (ERM) value and is 260 PPB (ng/g) dw = Dry Weight
Guideline Reference: Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278
 
Spatial Representation: Data were collected from 1 station(s). Station Code(s): B13-8248.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-07 to 2013-08-07
Environmental Conditions:
QAPP Information: Bight Coastal Ecology Committee. 2013. Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual
 
Line of Evidence (LOE) for Decision ID 106088, Dibenz[a,h]anthracene
Region 9     
Santa Margarita Lagoon
 
LOE ID: 137138
 
Pollutant: Dibenz[a,h]anthracene
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Marine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Southern California Bight Project 2013 data for Santa Margarita Lagoon to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for Dibenz(a,h)anthracene .
Data Reference: Sediment, Toxicity data for the 2020/2022 integrated report in Region 9.
 
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 (Water Quality Control Plan, San Diego Basin).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: The value used in this assessment comes from Long et al., 1995, is the Effects Range Median (ERM) value and is 260 PPB (ng/g) dw = Dry Weight
Guideline Reference: Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278
 
Spatial Representation: Data were collected from 1 station(s). Station Code(s): B13-8253.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-07 to 2013-08-07
Environmental Conditions:
QAPP Information: Bight Coastal Ecology Committee. 2013. Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual
 
Line of Evidence (LOE) for Decision ID 106088, Dibenz[a,h]anthracene
Region 9     
Santa Margarita Lagoon
 
LOE ID: 137156
 
Pollutant: Dibenz[a,h]anthracene
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Marine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Southern California Bight Project 2013 data for Santa Margarita Lagoon to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for Dibenz(a,h)anthracene .
Data Reference: Sediment, Toxicity data for the 2020/2022 integrated report in Region 9.
 
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 (Water Quality Control Plan, San Diego Basin).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: The value used in this assessment comes from Long et al., 1995, is the Effects Range Median (ERM) value and is 260 PPB (ng/g) dw = Dry Weight
Guideline Reference: Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278
 
Spatial Representation: Data were collected from 1 station(s). Station Code(s): B13-8250.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-07 to 2013-08-07
Environmental Conditions:
QAPP Information: Bight Coastal Ecology Committee. 2013. Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual
 
Line of Evidence (LOE) for Decision ID 106088, Dibenz[a,h]anthracene
Region 9     
Santa Margarita Lagoon
 
LOE ID: 137174
 
Pollutant: Dibenz[a,h]anthracene
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Southern California Bight Project 2013 data for Santa Margarita Lagoon to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for Dibenz(a,h)anthracene .
Data Reference: Sediment, Toxicity data for the 2020/2022 integrated report in Region 9.
 
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 (Water Quality Control Plan, San Diego Basin).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: The value used in this assessment comes from Long et al., 1995, is the Effects Range Median (ERM) value and is 260 PPB (ng/g) dw = Dry Weight
Guideline Reference: Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278
 
Spatial Representation: Data were collected from 1 station(s). Station Code(s): B13-8250.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-07 to 2013-08-07
Environmental Conditions:
QAPP Information: Bight Coastal Ecology Committee. 2013. Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual
 
Line of Evidence (LOE) for Decision ID 106088, Dibenz[a,h]anthracene
Region 9     
Santa Margarita Lagoon
 
LOE ID: 137210
 
Pollutant: Dibenz[a,h]anthracene
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Marine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Southern California Bight Project 2013 data for Santa Margarita Lagoon to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for Dibenz(a,h)anthracene .
Data Reference: Sediment, Toxicity data for the 2020/2022 integrated report in Region 9.
 
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 (Water Quality Control Plan, San Diego Basin).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: The value used in this assessment comes from Long et al., 1995, is the Effects Range Median (ERM) value and is 260 PPB (ng/g) dw = Dry Weight
Guideline Reference: Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278
 
Spatial Representation: Data were collected from 1 station(s). Station Code(s): B13-8248.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-07 to 2013-08-07
Environmental Conditions:
QAPP Information: Bight Coastal Ecology Committee. 2013. Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual
 
Line of Evidence (LOE) for Decision ID 106088, Dibenz[a,h]anthracene
Region 9     
Santa Margarita Lagoon
 
LOE ID: 137015
 
Pollutant: Dibenz[a,h]anthracene
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Southern California Bight Project 2013 data for Santa Margarita Lagoon to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for Dibenz(a,h)anthracene .
Data Reference: Sediment, Toxicity data for the 2020/2022 integrated report in Region 9.
 
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 (Water Quality Control Plan, San Diego Basin).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: The value used in this assessment comes from Long et al., 1995, is the Effects Range Median (ERM) value and is 260 PPB (ng/g) dw = Dry Weight
Guideline Reference: Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278
 
Spatial Representation: Data were collected from 1 station(s). Station Code(s): B13-8253.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-07 to 2013-08-07
Environmental Conditions:
QAPP Information: Bight Coastal Ecology Committee. 2013. Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual
 
 
DECISION ID
106089
Region 9     
Santa Margarita Lagoon
 
Pollutant: Lead
Final Listing Decision: Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision: Do Not List on 303(d) list (TMDL required list)(2018)
Revision Status Revised
Impairment from Pollutant or Pollution: Pollutant
 
Regional Board Conclusion: Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.
 
Regional Board Decision Recommendation: After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
 
State Board Review of Regional Board Conclusion and Recommendation:
 
State Board Decision Recommendation: After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.
 
 
Line of Evidence (LOE) for Decision ID 106089, Lead
Region 9     
Santa Margarita Lagoon
 
LOE ID: 137823
 
Pollutant: Lead
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Southern California Bight Project 2013 data for Santa Margarita Lagoon to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for Lead .
Data Reference: Sediment, Toxicity data for the 2020/2022 integrated report in Region 9.
 
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 (Water Quality Control Plan, San Diego Basin).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: The evaluation guideline for Lead from MacDonald et al. 1996, which states that the probable effect level for Lead is 112.18 mg/kg. (dw = Dry Weight)
Guideline Reference: Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278
 
Spatial Representation: Data were collected from 1 station(s). Station Code(s): B13-8250.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-07 to 2013-08-07
Environmental Conditions:
QAPP Information: Bight Coastal Ecology Committee. 2013. Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual
 
Line of Evidence (LOE) for Decision ID 106089, Lead
Region 9     
Santa Margarita Lagoon
 
LOE ID: 137707
 
Pollutant: Lead
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Southern California Bight Project 2013 data for Santa Margarita Lagoon to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for Lead .
Data Reference: Sediment, Toxicity data for the 2020/2022 integrated report in Region 9.
 
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 (Water Quality Control Plan, San Diego Basin).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: The evaluation guideline for Lead from MacDonald et al. 1996, which states that the probable effect level for Lead is 112.18 mg/kg. (dw = Dry Weight)
Guideline Reference: Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278
 
Spatial Representation: Data were collected from 1 station(s). Station Code(s): B13-8253.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-07 to 2013-08-07
Environmental Conditions:
QAPP Information: Bight Coastal Ecology Committee. 2013. Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual
 
Line of Evidence (LOE) for Decision ID 106089, Lead
Region 9     
Santa Margarita Lagoon
 
LOE ID: 137726
 
Pollutant: Lead
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Southern California Bight Project 2013 data for Santa Margarita Lagoon to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for Lead .
Data Reference: Sediment, Toxicity data for the 2020/2022 integrated report in Region 9.
 
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 (Water Quality Control Plan, San Diego Basin).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: The evaluation guideline for Lead from MacDonald et al. 1996, which states that the probable effect level for Lead is 112.18 mg/kg. (dw = Dry Weight)
Guideline Reference: Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278
 
Spatial Representation: Data were collected from 1 station(s). Station Code(s): B13-8248.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-07 to 2013-08-07
Environmental Conditions:
QAPP Information: Bight Coastal Ecology Committee. 2013. Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual
 
Line of Evidence (LOE) for Decision ID 106089, Lead
Region 9     
Santa Margarita Lagoon
 
LOE ID: 137821
 
Pollutant: Lead
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Marine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Southern California Bight Project 2013 data for Santa Margarita Lagoon to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for Lead .
Data Reference: Sediment, Toxicity data for the 2020/2022 integrated report in Region 9.
 
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 (Water Quality Control Plan, San Diego Basin).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: The evaluation guideline for Lead from MacDonald et al. 1996, which states that the probable effect level for Lead is 112.18 mg/kg. (dw = Dry Weight)
Guideline Reference: Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278
 
Spatial Representation: Data were collected from 1 station(s). Station Code(s): B13-8253.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-07 to 2013-08-07
Environmental Conditions:
QAPP Information: Bight Coastal Ecology Committee. 2013. Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual
 
Line of Evidence (LOE) for Decision ID 106089, Lead
Region 9     
Santa Margarita Lagoon
 
LOE ID: 137761
 
Pollutant: Lead
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Marine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Southern California Bight Project 2013 data for Santa Margarita Lagoon to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for Lead .
Data Reference: Sediment, Toxicity data for the 2020/2022 integrated report in Region 9.
 
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 (Water Quality Control Plan, San Diego Basin).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: The evaluation guideline for Lead from MacDonald et al. 1996, which states that the probable effect level for Lead is 112.18 mg/kg. (dw = Dry Weight)
Guideline Reference: Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278
 
Spatial Representation: Data were collected from 1 station(s). Station Code(s): B13-8248.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-07 to 2013-08-07
Environmental Conditions:
QAPP Information: Bight Coastal Ecology Committee. 2013. Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual
 
Line of Evidence (LOE) for Decision ID 106089, Lead
Region 9     
Santa Margarita Lagoon
 
LOE ID: 137982
 
Pollutant: Lead
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Marine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Southern California Bight Project 2013 data for Santa Margarita Lagoon to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for Lead .
Data Reference: Sediment, Toxicity data for the 2020/2022 integrated report in Region 9.
 
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 (Water Quality Control Plan, San Diego Basin).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: The evaluation guideline for Lead from MacDonald et al. 1996, which states that the probable effect level for Lead is 112.18 mg/kg. (dw = Dry Weight)
Guideline Reference: Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278
 
Spatial Representation: Data were collected from 1 station(s). Station Code(s): B13-8250.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-07 to 2013-08-07
Environmental Conditions:
QAPP Information: Bight Coastal Ecology Committee. 2013. Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual
 
Line of Evidence (LOE) for Decision ID 106089, Lead
Region 9     
Santa Margarita Lagoon
 
LOE ID: 78305
 
Pollutant: Lead
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Bight data for Santa Margarita Lagoon to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Lead.
Data Reference: Data for Various Pollutants from Bight, 2008.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Water Quality Control Plan for the San Diego Basin (SDRWQCB 2007): All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life.
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: In marine and estuarine sediments the probable effect level (predictive of sediment toxicity for sediment-dwelling organisms) for Lead is 112.18 ug/g dry weight (MacDonald et al., 1996).
Guideline Reference: Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278
 
Spatial Representation: Data for this line of evidence for Santa Margarita Lagoon was collected at 1 monitoring site [ 902_6308 ]
Temporal Representation: Data was collected on a single day 8/29/2008.
Environmental Conditions: Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information: The Quality Assurance Project Plan from Southern California Bight was followed.
QAPP Information Reference(s): Quality Assurance Project Plan from Southern California Bight.
 
 
DECISION ID
128181
Region 9     
Santa Margarita Lagoon
 
Pollutant: Mercury
Final Listing Decision: Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision: Do Not List on 303(d) list (TMDL required list)(2018)
Revision Status Revised
Impairment from Pollutant or Pollution: Pollutant
 
Regional Board Conclusion: Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.
 
Regional Board Decision Recommendation: After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
 
State Board Review of Regional Board Conclusion and Recommendation:
 
State Board Decision Recommendation: After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.
 
 
Line of Evidence (LOE) for Decision ID 128181, Mercury
Region 9     
Santa Margarita Lagoon
 
LOE ID: 78308
 
Pollutant: Mercury
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Bight data for Santa Margarita Lagoon to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Mercury.
Data Reference: Data for Various Pollutants from Bight, 2008.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Water Quality Control Plan for the San Diego Basin (SDRWQCB 2007): All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life.
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: In marine and estuarine sediments the sediment quality guideline (predictive of sediment toxicity for sediment-dwelling organisms) for Mercury is 2.1 ug/g (PTI Environmental Services, 1991).
Guideline Reference: Pollutants of concern in Puget Sound. EPA 910/9-91-003. Seattle, WA: U.S. Environmental Protection Agency
 
Spatial Representation: Data for this line of evidence for Santa Margarita Lagoon was collected at 1 monitoring site [ 902_6308 ]
Temporal Representation: Data was collected on a single day 8/29/2008.
Environmental Conditions: Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information: The Quality Assurance Project Plan from Southern California Bight was followed.
QAPP Information Reference(s): Quality Assurance Project Plan from Southern California Bight.
 
Line of Evidence (LOE) for Decision ID 128181, Mercury
Region 9     
Santa Margarita Lagoon
 
LOE ID: 137844
 
Pollutant: Mercury
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Southern California Bight Project 2013 data for Santa Margarita Lagoon to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for Mercury .
Data Reference: Sediment, Toxicity data for the 2020/2022 integrated report in Region 9.
 
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 (Water Quality Control Plan, San Diego Basin).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: The evaluation guideline used in this assessment comes form PTI Environmental Services, 1991, and is 2.1 ug/g.
Guideline Reference: An evaluation of methods for calculating mean sediment quality guideline quotients as indicators of contamination and acute toxicity to amphipods by chemical mixtures. Environmental Toxicology and Chemistry. 20(10): 2276-2286
 
Spatial Representation: Data were collected from 1 station(s). Station Code(s): B13-8250.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-07 to 2013-08-07
Environmental Conditions:
QAPP Information: Bight Coastal Ecology Committee. 2013. Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual
 
Line of Evidence (LOE) for Decision ID 128181, Mercury
Region 9     
Santa Margarita Lagoon
 
LOE ID: 138089
 
Pollutant: Mercury
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Marine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Southern California Bight Project 2013 data for Santa Margarita Lagoon to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for Mercury .
Data Reference: Sediment, Toxicity data for the 2020/2022 integrated report in Region 9.
 
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 (Water Quality Control Plan, San Diego Basin).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: The evaluation guideline used in this assessment comes form PTI Environmental Services, 1991, and is 2.1 ug/g.
Guideline Reference: An evaluation of methods for calculating mean sediment quality guideline quotients as indicators of contamination and acute toxicity to amphipods by chemical mixtures. Environmental Toxicology and Chemistry. 20(10): 2276-2286
 
Spatial Representation: Data were collected from 1 station(s). Station Code(s): B13-8250.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-07 to 2013-08-07
Environmental Conditions:
QAPP Information: Bight Coastal Ecology Committee. 2013. Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual
 
Line of Evidence (LOE) for Decision ID 128181, Mercury
Region 9     
Santa Margarita Lagoon
 
LOE ID: 137885
 
Pollutant: Mercury
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Marine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Southern California Bight Project 2013 data for Santa Margarita Lagoon to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for Mercury .
Data Reference: Sediment, Toxicity data for the 2020/2022 integrated report in Region 9.
 
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 (Water Quality Control Plan, San Diego Basin).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: The evaluation guideline used in this assessment comes form PTI Environmental Services, 1991, and is 2.1 ug/g.
Guideline Reference: An evaluation of methods for calculating mean sediment quality guideline quotients as indicators of contamination and acute toxicity to amphipods by chemical mixtures. Environmental Toxicology and Chemistry. 20(10): 2276-2286
 
Spatial Representation: Data were collected from 1 station(s). Station Code(s): B13-8253.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-07 to 2013-08-07
Environmental Conditions:
QAPP Information: Bight Coastal Ecology Committee. 2013. Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual
 
Line of Evidence (LOE) for Decision ID 128181, Mercury
Region 9     
Santa Margarita Lagoon
 
LOE ID: 137959
 
Pollutant: Mercury
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Southern California Bight Project 2013 data for Santa Margarita Lagoon to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for Mercury .
Data Reference: Sediment, Toxicity data for the 2020/2022 integrated report in Region 9.
 
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 (Water Quality Control Plan, San Diego Basin).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: The evaluation guideline used in this assessment comes form PTI Environmental Services, 1991, and is 2.1 ug/g.
Guideline Reference: An evaluation of methods for calculating mean sediment quality guideline quotients as indicators of contamination and acute toxicity to amphipods by chemical mixtures. Environmental Toxicology and Chemistry. 20(10): 2276-2286
 
Spatial Representation: Data were collected from 1 station(s). Station Code(s): B13-8248.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-07 to 2013-08-07
Environmental Conditions:
QAPP Information: Bight Coastal Ecology Committee. 2013. Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual
 
Line of Evidence (LOE) for Decision ID 128181, Mercury
Region 9     
Santa Margarita Lagoon
 
LOE ID: 137841
 
Pollutant: Mercury
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Southern California Bight Project 2013 data for Santa Margarita Lagoon to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for Mercury .
Data Reference: Sediment, Toxicity data for the 2020/2022 integrated report in Region 9.
 
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 (Water Quality Control Plan, San Diego Basin).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: The evaluation guideline used in this assessment comes form PTI Environmental Services, 1991, and is 2.1 ug/g.
Guideline Reference: An evaluation of methods for calculating mean sediment quality guideline quotients as indicators of contamination and acute toxicity to amphipods by chemical mixtures. Environmental Toxicology and Chemistry. 20(10): 2276-2286
 
Spatial Representation: Data were collected from 1 station(s). Station Code(s): B13-8253.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-07 to 2013-08-07
Environmental Conditions:
QAPP Information: Bight Coastal Ecology Committee. 2013. Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual
 
Line of Evidence (LOE) for Decision ID 128181, Mercury
Region 9     
Santa Margarita Lagoon
 
LOE ID: 137903
 
Pollutant: Mercury
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Marine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Southern California Bight Project 2013 data for Santa Margarita Lagoon to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for Mercury .
Data Reference: Sediment, Toxicity data for the 2020/2022 integrated report in Region 9.
 
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 (Water Quality Control Plan, San Diego Basin).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: The evaluation guideline used in this assessment comes form PTI Environmental Services, 1991, and is 2.1 ug/g.
Guideline Reference: An evaluation of methods for calculating mean sediment quality guideline quotients as indicators of contamination and acute toxicity to amphipods by chemical mixtures. Environmental Toxicology and Chemistry. 20(10): 2276-2286
 
Spatial Representation: Data were collected from 1 station(s). Station Code(s): B13-8248.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-07 to 2013-08-07
Environmental Conditions:
QAPP Information: Bight Coastal Ecology Committee. 2013. Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual
 
 
DECISION ID
127737
Region 9     
Santa Margarita Lagoon
 
Pollutant: PAHs (Polycyclic Aromatic Hydrocarbons)
Final Listing Decision: Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision: Do Not List on 303(d) list (TMDL required list)(2018)
Revision Status Revised
Impairment from Pollutant or Pollution: Pollutant
 
Regional Board Conclusion: Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.
 
Regional Board Decision Recommendation: After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
 
State Board Review of Regional Board Conclusion and Recommendation:
 
State Board Decision Recommendation: After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.
 
 
Line of Evidence (LOE) for Decision ID 127737, PAHs (Polycyclic Aromatic Hydrocarbons)
Region 9     
Santa Margarita Lagoon
 
LOE ID: 137936
 
Pollutant: PAHs (Polycyclic Aromatic Hydrocarbons)
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Marine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Southern California Bight Project 2013 data for Santa Margarita Lagoon to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for Low molecular weight PAHs .
Data Reference: Sediment, Toxicity data for the 2020/2022 integrated report in Region 9.
 
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 (Water Quality Control Plan, San Diego Basin).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: The evaluation guideline for Low molecular weight from MacDonald et al. 1996, which states that the probable effect level for Low molecular weight is 1442 ug/kg. (dw = Dry Weight)
Guideline Reference: Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278
 
Spatial Representation: Data were collected from 1 station(s). Station Code(s): B13-8250.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-07 to 2013-08-07
Environmental Conditions:
QAPP Information: Bight Coastal Ecology Committee. 2013. Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual
 
Line of Evidence (LOE) for Decision ID 127737, PAHs (Polycyclic Aromatic Hydrocarbons)
Region 9     
Santa Margarita Lagoon
 
LOE ID: 137948
 
Pollutant: PAHs (Polycyclic Aromatic Hydrocarbons)
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Marine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Southern California Bight Project 2013 data for Santa Margarita Lagoon to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for Low molecular weight PAHs .
Data Reference: Sediment, Toxicity data for the 2020/2022 integrated report in Region 9.
 
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 (Water Quality Control Plan, San Diego Basin).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: The evaluation guideline for Low molecular weight from MacDonald et al. 1996, which states that the probable effect level for Low molecular weight is 1442 ug/kg. (dw = Dry Weight)
Guideline Reference: Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278
 
Spatial Representation: Data were collected from 1 station(s). Station Code(s): B13-8248.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-07 to 2013-08-07
Environmental Conditions:
QAPP Information: Bight Coastal Ecology Committee. 2013. Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual
 
Line of Evidence (LOE) for Decision ID 127737, PAHs (Polycyclic Aromatic Hydrocarbons)
Region 9     
Santa Margarita Lagoon
 
LOE ID: 137955
 
Pollutant: PAHs (Polycyclic Aromatic Hydrocarbons)
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Southern California Bight Project 2013 data for Santa Margarita Lagoon to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for Low molecular weight PAHs .
Data Reference: Sediment, Toxicity data for the 2020/2022 integrated report in Region 9.
 
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 (Water Quality Control Plan, San Diego Basin).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: The evaluation guideline for Low molecular weight from MacDonald et al. 1996, which states that the probable effect level for Low molecular weight is 1442 ug/kg. (dw = Dry Weight)
Guideline Reference: Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278
 
Spatial Representation: Data were collected from 1 station(s). Station Code(s): B13-8250.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-07 to 2013-08-07
Environmental Conditions:
QAPP Information: Bight Coastal Ecology Committee. 2013. Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual
 
Line of Evidence (LOE) for Decision ID 127737, PAHs (Polycyclic Aromatic Hydrocarbons)
Region 9     
Santa Margarita Lagoon
 
LOE ID: 137571
 
Pollutant: PAHs (Polycyclic Aromatic Hydrocarbons)
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Marine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Southern California Bight Project 2013 data for Santa Margarita Lagoon to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for High molecular weight PAHs .
Data Reference: Sediment, Toxicity data for the 2020/2022 integrated report in Region 9.
 
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 (Water Quality Control Plan, San Diego Basin).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: The evaluation guideline used in this assessment comes from Long et al., 1995, and is 9600 ng/g dw = Dry Weight
Guideline Reference: Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278
 
Spatial Representation: Data were collected from 1 station(s). Station Code(s): B13-8250.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-07 to 2013-08-07
Environmental Conditions:
QAPP Information: Bight Coastal Ecology Committee. 2013. Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual
 
Line of Evidence (LOE) for Decision ID 127737, PAHs (Polycyclic Aromatic Hydrocarbons)
Region 9     
Santa Margarita Lagoon
 
LOE ID: 95680
 
Pollutant: Toxicity
LOE Subgroup: Toxicity
Matrix: Sediment
Fraction: None
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 3
Number of Exceedances: 0
 
Data and Information Type: TOXICITY TESTING
Data Used to Assess Water Quality: Three samples were collected to test for toxicity. None of the three samples exhibited statistically significant toxicity. The toxicity tests included survival of Eohaustorius estuarius. Each sample is a sediment composites from three different sites. tr11a
Data Reference: Data for Various Pollutants from Ambient Bay and Lagoon, 2003-2005.
 
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 for the San Diego Basin
 
Evaluation Guideline: Toxicity is defined as a statistically significant effect in the sample exposure compared to the control using EPA-recommended hypothesis testing. For SWAMP data exceedances are counted with the significant effect code SL. SL is defined as the result being significant compared to the negative control based on a statistical test, less than stated the alpha level, AND less than the evaluation threshold.
Guideline Reference: Methods for Measuring the Toxicity and Bioaccumulation of Sediment-associated Contaminants with Freshwater Invertebrates, Second Edition. U.S. Environmental Protection Agency Office of Research and Development, Duluth, MI , U.S. Environmental Protection Agency Office of Water, Washington, DC EPA-600/R-99/064
 
Spatial Representation: The samples were collected at stations 902SME_2003 a composite of 902_SME1L1_2003, 902_SME2L2_2003, and 902_SME2R1_2003. Station 902SME_2004 a composite of 902_SME1R1_2004, 902_SME2M1_2004, and 902_SME2R2_2004. Station 902SME_2005, a composite of 902_SME2M1_2005, 902_SME2R5_2005, 902_SME3R5_2005.
Temporal Representation: The samples were collected in July 2003, 2004, and 2005.
Environmental Conditions:
QAPP Information: The data was collected under the County of San Diego Ambient Bay and Lagoon Monitoring Project 2003-2005. Annual Report for the Receiving Waters and Urban Runoff Monitoring section covered under the San Diego County Municipal National Pollutant Discharge
QAPP Information Reference(s): Quality Assurance Project Plan from Enviromatrix Analyticial Rev. 18.
 
Line of Evidence (LOE) for Decision ID 127737, PAHs (Polycyclic Aromatic Hydrocarbons)
Region 9     
Santa Margarita Lagoon
 
LOE ID: 95679
 
Pollutant: Toxicity
LOE Subgroup: Toxicity
Matrix: Sediment
Fraction: None
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 4
Number of Exceedances: 0
 
Data and Information Type: TOXICITY TESTING
Data Used to Assess Water Quality: Four samples were collected to test for toxicity. Zero of the samples exhibited statistically significant toxicity. The toxicity tests included survival of Eohaustorius estuarius and percent normal of Mytilus galloprovincialis.
Data Reference: Data for Various Pollutants from Bight, 2008.
 
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. Region 9 Basin Plan.
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: Toxicity is defined as a statistically significant effect in the sample exposure compared to the control using EPA-recommended hypothesis testing. 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 Freshwater and Marine Organisms, Fourth Edition. U.S. Environmental Protection Agency Office of Water, Washington, DC EPA-821-R-02-013
 
Spatial Representation: The samples were collected from sites 902_6303, 902_6311, 902_6314, 902_6317 Santa Margarita Estuary.
Temporal Representation: The samples were collected in August 2008.
Environmental Conditions:
QAPP Information: This data was collected under the Southern California Bight 2008 Regional Marine Monitoring Survey Quality Assurance Plan.
QAPP Information Reference(s): e-mail clarifying QAPP information
 
Line of Evidence (LOE) for Decision ID 127737, PAHs (Polycyclic Aromatic Hydrocarbons)
Region 9     
Santa Margarita Lagoon
 
LOE ID: 76469
 
Pollutant: Toxicity
LOE Subgroup: Toxicity
Matrix: Sediment
Fraction: None
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: TOXICITY TESTING
Data Used to Assess Water Quality: One sample was collected to test for toxicity. None of the samples exhibited statistically and biologically significant toxicity. The toxicity tests included survival of Eohaustorius estuarius and percent normal of Mytilus galloprovincialis.
Data Reference: Data for Various Pollutants from Bight, 2008.
 
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. Region 9 Basin Plan.
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: Toxicity is defined as a statistically significant effect in the sample exposure compared to the control using EPA-recommended hypothesis testing. 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. Additionally, the biological significance of the sample is evaluated by determining whether the sample response is lower than the evaluation threshold.
Guideline Reference: Methods for Measuring the Acute Toxicity of Effluents and Receiving Waters to Freshwater and Marine Organisms, Fifth Edition. EPA-821-R-02-012
Guideline Reference: Short-term Methods for Estimating the Chronic Toxicity of Effluents and Receiving Waters to Freshwater Organisms. Fourth Edition. Office of Water, U.S. Environmental Protection Agency. Washington, D.C. EPA-821-R-02-013
 
Spatial Representation: The samples were collected from site 902_6308 Santa Margarita Estuary.
Temporal Representation: The samples were collected in August 2008.
Environmental Conditions:
QAPP Information: This data was collected under the Southern California Bight 2008 Regional Marine Monitoring Survey Quality Assurance Plan.
QAPP Information Reference(s): e-mail clarifying QAPP information
 
Line of Evidence (LOE) for Decision ID 127737, PAHs (Polycyclic Aromatic Hydrocarbons)
Region 9     
Santa Margarita Lagoon
 
LOE ID: 138371
 
Pollutant: PAHs (Polycyclic Aromatic Hydrocarbons)
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Marine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Southern California Bight Project 2013 data for Santa Margarita Lagoon to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for PAHs (Polycyclic Aromatic Hydrocarbons) .
Data Reference: Sediment, Toxicity data for the 2020/2022 integrated report in Region 9.
 
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 (Water Quality Control Plan, San Diego Basin).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: In marine and estuarine sediments the sediment quality guideline (predictive of sediment toxicity for sediment-dwelling organisms) for Total PAHs is 1800 ug/g dw = Dry Weight (Fairey et al., 2001).
Guideline Reference: An evaluation of methods for calculating mean sediment quality guideline quotients as indicators of contamination and acute toxicity to amphipods by chemical mixtures. Environmental Toxicology and Chemistry. 20(10): 2276-2286
 
Spatial Representation: Data were collected from 1 station(s). Station Code(s): B13-8253.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-07 to 2013-08-07
Environmental Conditions:
QAPP Information: Bight Coastal Ecology Committee. 2013. Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual
 
Line of Evidence (LOE) for Decision ID 127737, PAHs (Polycyclic Aromatic Hydrocarbons)
Region 9     
Santa Margarita Lagoon
 
LOE ID: 138145
 
Pollutant: PAHs (Polycyclic Aromatic Hydrocarbons)
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Southern California Bight Project 2013 data for Santa Margarita Lagoon to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for PAHs (Polycyclic Aromatic Hydrocarbons) .
Data Reference: Sediment, Toxicity data for the 2020/2022 integrated report in Region 9.
 
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 (Water Quality Control Plan, San Diego Basin).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: In marine and estuarine sediments the sediment quality guideline (predictive of sediment toxicity for sediment-dwelling organisms) for Total PAHs is 1800 ug/g dw = Dry Weight (Fairey et al., 2001).
Guideline Reference: An evaluation of methods for calculating mean sediment quality guideline quotients as indicators of contamination and acute toxicity to amphipods by chemical mixtures. Environmental Toxicology and Chemistry. 20(10): 2276-2286
 
Spatial Representation: Data were collected from 1 station(s). Station Code(s): B13-8253.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-07 to 2013-08-07
Environmental Conditions:
QAPP Information: Bight Coastal Ecology Committee. 2013. Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual
 
Line of Evidence (LOE) for Decision ID 127737, PAHs (Polycyclic Aromatic Hydrocarbons)
Region 9     
Santa Margarita Lagoon
 
LOE ID: 137828
 
Pollutant: PAHs (Polycyclic Aromatic Hydrocarbons)
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Southern California Bight Project 2013 data for Santa Margarita Lagoon to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for High molecular weight PAHs .
Data Reference: Sediment, Toxicity data for the 2020/2022 integrated report in Region 9.
 
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 (Water Quality Control Plan, San Diego Basin).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: The evaluation guideline used in this assessment comes from Long et al., 1995, and is 9600 ng/g dw = Dry Weight
Guideline Reference: Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278
 
Spatial Representation: Data were collected from 1 station(s). Station Code(s): B13-8248.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-07 to 2013-08-07
Environmental Conditions:
QAPP Information: Bight Coastal Ecology Committee. 2013. Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual
 
Line of Evidence (LOE) for Decision ID 127737, PAHs (Polycyclic Aromatic Hydrocarbons)
Region 9     
Santa Margarita Lagoon
 
LOE ID: 138064
 
Pollutant: PAHs (Polycyclic Aromatic Hydrocarbons)
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Southern California Bight Project 2013 data for Santa Margarita Lagoon to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for Low molecular weight PAHs .
Data Reference: Sediment, Toxicity data for the 2020/2022 integrated report in Region 9.
 
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 (Water Quality Control Plan, San Diego Basin).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: The evaluation guideline for Low molecular weight from MacDonald et al. 1996, which states that the probable effect level for Low molecular weight is 1442 ug/kg. (dw = Dry Weight)
Guideline Reference: Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278
 
Spatial Representation: Data were collected from 1 station(s). Station Code(s): B13-8253.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-07 to 2013-08-07
Environmental Conditions:
QAPP Information: Bight Coastal Ecology Committee. 2013. Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual
 
Line of Evidence (LOE) for Decision ID 127737, PAHs (Polycyclic Aromatic Hydrocarbons)
Region 9     
Santa Margarita Lagoon
 
LOE ID: 138440
 
Pollutant: PAHs (Polycyclic Aromatic Hydrocarbons)
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Marine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Southern California Bight Project 2013 data for Santa Margarita Lagoon to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for PAHs (Polycyclic Aromatic Hydrocarbons) .
Data Reference: Sediment, Toxicity data for the 2020/2022 integrated report in Region 9.
 
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 (Water Quality Control Plan, San Diego Basin).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: In marine and estuarine sediments the sediment quality guideline (predictive of sediment toxicity for sediment-dwelling organisms) for Total PAHs is 1800 ug/g dw = Dry Weight (Fairey et al., 2001).
Guideline Reference: An evaluation of methods for calculating mean sediment quality guideline quotients as indicators of contamination and acute toxicity to amphipods by chemical mixtures. Environmental Toxicology and Chemistry. 20(10): 2276-2286
 
Spatial Representation: Data were collected from 1 station(s). Station Code(s): B13-8250.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-07 to 2013-08-07
Environmental Conditions:
QAPP Information: Bight Coastal Ecology Committee. 2013. Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual
 
Line of Evidence (LOE) for Decision ID 127737, PAHs (Polycyclic Aromatic Hydrocarbons)
Region 9     
Santa Margarita Lagoon
 
LOE ID: 138107
 
Pollutant: PAHs (Polycyclic Aromatic Hydrocarbons)
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Marine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Southern California Bight Project 2013 data for Santa Margarita Lagoon to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for Low molecular weight PAHs .
Data Reference: Sediment, Toxicity data for the 2020/2022 integrated report in Region 9.
 
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 (Water Quality Control Plan, San Diego Basin).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: The evaluation guideline for Low molecular weight from MacDonald et al. 1996, which states that the probable effect level for Low molecular weight is 1442 ug/kg. (dw = Dry Weight)
Guideline Reference: Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278
 
Spatial Representation: Data were collected from 1 station(s). Station Code(s): B13-8253.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-07 to 2013-08-07
Environmental Conditions:
QAPP Information: Bight Coastal Ecology Committee. 2013. Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual
 
Line of Evidence (LOE) for Decision ID 127737, PAHs (Polycyclic Aromatic Hydrocarbons)
Region 9     
Santa Margarita Lagoon
 
LOE ID: 138010
 
Pollutant: PAHs (Polycyclic Aromatic Hydrocarbons)
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Southern California Bight Project 2013 data for Santa Margarita Lagoon to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for Low molecular weight PAHs .
Data Reference: Sediment, Toxicity data for the 2020/2022 integrated report in Region 9.
 
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 (Water Quality Control Plan, San Diego Basin).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: The evaluation guideline for Low molecular weight from MacDonald et al. 1996, which states that the probable effect level for Low molecular weight is 1442 ug/kg. (dw = Dry Weight)
Guideline Reference: Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278
 
Spatial Representation: Data were collected from 1 station(s). Station Code(s): B13-8248.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-07 to 2013-08-07
Environmental Conditions:
QAPP Information: Bight Coastal Ecology Committee. 2013. Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual
 
Line of Evidence (LOE) for Decision ID 127737, PAHs (Polycyclic Aromatic Hydrocarbons)
Region 9     
Santa Margarita Lagoon
 
LOE ID: 138144
 
Pollutant: PAHs (Polycyclic Aromatic Hydrocarbons)
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Marine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Southern California Bight Project 2013 data for Santa Margarita Lagoon to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for PAHs (Polycyclic Aromatic Hydrocarbons) .
Data Reference: Sediment, Toxicity data for the 2020/2022 integrated report in Region 9.
 
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 (Water Quality Control Plan, San Diego Basin).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: In marine and estuarine sediments the sediment quality guideline (predictive of sediment toxicity for sediment-dwelling organisms) for Total PAHs is 1800 ug/g dw = Dry Weight (Fairey et al., 2001).
Guideline Reference: An evaluation of methods for calculating mean sediment quality guideline quotients as indicators of contamination and acute toxicity to amphipods by chemical mixtures. Environmental Toxicology and Chemistry. 20(10): 2276-2286
 
Spatial Representation: Data were collected from 1 station(s). Station Code(s): B13-8248.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-07 to 2013-08-07
Environmental Conditions:
QAPP Information: Bight Coastal Ecology Committee. 2013. Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual
 
Line of Evidence (LOE) for Decision ID 127737, PAHs (Polycyclic Aromatic Hydrocarbons)
Region 9     
Santa Margarita Lagoon
 
LOE ID: 137606
 
Pollutant: PAHs (Polycyclic Aromatic Hydrocarbons)
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Marine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Southern California Bight Project 2013 data for Santa Margarita Lagoon to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for High molecular weight PAHs .
Data Reference: Sediment, Toxicity data for the 2020/2022 integrated report in Region 9.
 
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 (Water Quality Control Plan, San Diego Basin).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: The evaluation guideline used in this assessment comes from Long et al., 1995, and is 9600 ng/g dw = Dry Weight
Guideline Reference: Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278
 
Spatial Representation: Data were collected from 1 station(s). Station Code(s): B13-8253.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-07 to 2013-08-07
Environmental Conditions:
QAPP Information: Bight Coastal Ecology Committee. 2013. Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual
 
Line of Evidence (LOE) for Decision ID 127737, PAHs (Polycyclic Aromatic Hydrocarbons)
Region 9     
Santa Margarita Lagoon
 
LOE ID: 138331
 
Pollutant: PAHs (Polycyclic Aromatic Hydrocarbons)
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Southern California Bight Project 2013 data for Santa Margarita Lagoon to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for PAHs (Polycyclic Aromatic Hydrocarbons) .
Data Reference: Sediment, Toxicity data for the 2020/2022 integrated report in Region 9.
 
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 (Water Quality Control Plan, San Diego Basin).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: In marine and estuarine sediments the sediment quality guideline (predictive of sediment toxicity for sediment-dwelling organisms) for Total PAHs is 1800 ug/g dw = Dry Weight (Fairey et al., 2001).
Guideline Reference: An evaluation of methods for calculating mean sediment quality guideline quotients as indicators of contamination and acute toxicity to amphipods by chemical mixtures. Environmental Toxicology and Chemistry. 20(10): 2276-2286
 
Spatial Representation: Data were collected from 1 station(s). Station Code(s): B13-8250.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-07 to 2013-08-07
Environmental Conditions:
QAPP Information: Bight Coastal Ecology Committee. 2013. Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual
 
Line of Evidence (LOE) for Decision ID 127737, PAHs (Polycyclic Aromatic Hydrocarbons)
Region 9     
Santa Margarita Lagoon
 
LOE ID: 137832
 
Pollutant: PAHs (Polycyclic Aromatic Hydrocarbons)
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Southern California Bight Project 2013 data for Santa Margarita Lagoon to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for High molecular weight PAHs .
Data Reference: Sediment, Toxicity data for the 2020/2022 integrated report in Region 9.
 
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 (Water Quality Control Plan, San Diego Basin).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: The evaluation guideline used in this assessment comes from Long et al., 1995, and is 9600 ng/g dw = Dry Weight
Guideline Reference: Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278
 
Spatial Representation: Data were collected from 1 station(s). Station Code(s): B13-8250.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-07 to 2013-08-07
Environmental Conditions:
QAPP Information: Bight Coastal Ecology Committee. 2013. Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual
 
Line of Evidence (LOE) for Decision ID 127737, PAHs (Polycyclic Aromatic Hydrocarbons)
Region 9     
Santa Margarita Lagoon
 
LOE ID: 137568
 
Pollutant: PAHs (Polycyclic Aromatic Hydrocarbons)
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Southern California Bight Project 2013 data for Santa Margarita Lagoon to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for High molecular weight PAHs .
Data Reference: Sediment, Toxicity data for the 2020/2022 integrated report in Region 9.
 
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 (Water Quality Control Plan, San Diego Basin).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: The evaluation guideline used in this assessment comes from Long et al., 1995, and is 9600 ng/g dw = Dry Weight
Guideline Reference: Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278
 
Spatial Representation: Data were collected from 1 station(s). Station Code(s): B13-8253.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-07 to 2013-08-07
Environmental Conditions:
QAPP Information: Bight Coastal Ecology Committee. 2013. Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual
 
Line of Evidence (LOE) for Decision ID 127737, PAHs (Polycyclic Aromatic Hydrocarbons)
Region 9     
Santa Margarita Lagoon
 
LOE ID: 138296
 
Pollutant: PAHs (Polycyclic Aromatic Hydrocarbons)
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Southern California Bight Project 2013 data for Santa Margarita Lagoon to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for PAHs (Polycyclic Aromatic Hydrocarbons) .
Data Reference: Sediment, Toxicity data for the 2020/2022 integrated report in Region 9.
 
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 (Water Quality Control Plan, San Diego Basin).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: In marine and estuarine sediments the sediment quality guideline (predictive of sediment toxicity for sediment-dwelling organisms) for Total PAHs is 1800 ug/g dw = Dry Weight (Fairey et al., 2001).
Guideline Reference: An evaluation of methods for calculating mean sediment quality guideline quotients as indicators of contamination and acute toxicity to amphipods by chemical mixtures. Environmental Toxicology and Chemistry. 20(10): 2276-2286
 
Spatial Representation: Data were collected from 1 station(s). Station Code(s): B13-8248.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-07 to 2013-08-07
Environmental Conditions:
QAPP Information: Bight Coastal Ecology Committee. 2013. Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual
 
Line of Evidence (LOE) for Decision ID 127737, PAHs (Polycyclic Aromatic Hydrocarbons)
Region 9     
Santa Margarita Lagoon
 
LOE ID: 137681
 
Pollutant: PAHs (Polycyclic Aromatic Hydrocarbons)
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Marine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Southern California Bight Project 2013 data for Santa Margarita Lagoon to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for High molecular weight PAHs .
Data Reference: Sediment, Toxicity data for the 2020/2022 integrated report in Region 9.
 
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 (Water Quality Control Plan, San Diego Basin).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: The evaluation guideline used in this assessment comes from Long et al., 1995, and is 9600 ng/g dw = Dry Weight
Guideline Reference: Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278
 
Spatial Representation: Data were collected from 1 station(s). Station Code(s): B13-8248.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-07 to 2013-08-07
Environmental Conditions:
QAPP Information: Bight Coastal Ecology Committee. 2013. Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual
 
Line of Evidence (LOE) for Decision ID 127737, PAHs (Polycyclic Aromatic Hydrocarbons)
Region 9     
Santa Margarita Lagoon
 
LOE ID: 78309
 
Pollutant: PAHs (Polycyclic Aromatic Hydrocarbons)
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Bight data for Santa Margarita Lagoon to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for PAH, High molecular weight.
Data Reference: Data for Various Pollutants from Bight, 2008.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Water Quality Control Plan for the San Diego Basin (SDRWQCB 2007): All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life.
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: In marine and estuarine sediments the effects range median (predictive of sediment toxicity for sediment-dwelling organisms) for High molecular weight PAHs is 9600 ng/g dry weight (Long et al., 1995).
Guideline Reference: Incidence of adverse biological effects within ranges of chemical concentrations in marine and estuary sediments. Environmental Management. 19, (1): 81-97
 
Spatial Representation: Data for this line of evidence for Santa Margarita Lagoon was collected at 1 monitoring site [ 902_6308 ]
Temporal Representation: Data was collected on a single day 8/29/2008.
Environmental Conditions: Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information: The Quality Assurance Project Plan from Southern California Bight was followed.
QAPP Information Reference(s): Quality Assurance Project Plan from Southern California Bight.
 
Line of Evidence (LOE) for Decision ID 127737, PAHs (Polycyclic Aromatic Hydrocarbons)
Region 9     
Santa Margarita Lagoon
 
LOE ID: 78311
 
Pollutant: PAHs (Polycyclic Aromatic Hydrocarbons)
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Bight data for Santa Margarita Lagoon to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for PAH, Low molecular weight.
Data Reference: Data for Various Pollutants from Bight, 2008.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Water Quality Control Plan for the San Diego Basin (SDRWQCB 2007): All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life.
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: In marine and estuarine sediments the effects range median (predictive of sediment toxicity for sediment-dwelling organisms) for Low molecular weight PAHs is 1442 ng/g dry weight (Long et al., 1995).
Guideline Reference: Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278
 
Spatial Representation: Data for this line of evidence for Santa Margarita Lagoon was collected at 1 monitoring site [ 902_6308 ]
Temporal Representation: Data was collected on a single day 8/29/2008.
Environmental Conditions: Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information: The Quality Assurance Project Plan from Southern California Bight was followed.
QAPP Information Reference(s): Quality Assurance Project Plan from Southern California Bight.
 
Line of Evidence (LOE) for Decision ID 127737, PAHs (Polycyclic Aromatic Hydrocarbons)
Region 9     
Santa Margarita Lagoon
 
LOE ID: 78312
 
Pollutant: PAHs (Polycyclic Aromatic Hydrocarbons)
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Bight data for Santa Margarita Lagoon to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for PAHs (Polycyclic Aromatic Hydrocarbons).
Data Reference: Data for Various Pollutants from Bight, 2008.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Water Quality Control Plan for the San Diego Basin (SDRWQCB 2007): All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life.
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: In marine and estuarine sediments the sediment quality guideline (predictive of sediment toxicity for sediment-dwelling organisms) for Total PAHs is 1800 ug/g (Fairey et al., 2001).
Guideline Reference: 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: Data for this line of evidence for Santa Margarita Lagoon was collected at 1 monitoring site [ 902_6308 ]
Temporal Representation: Data was collected on a single day 8/29/2008.
Environmental Conditions: Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information: The Quality Assurance Project Plan from Southern California Bight was followed.
QAPP Information Reference(s): Quality Assurance Project Plan from Southern California Bight.
 
 
DECISION ID
106091
Region 9     
Santa Margarita Lagoon
 
Pollutant: PCBs (Polychlorinated biphenyls)
Final Listing Decision: Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision: Do Not List on 303(d) list (TMDL required list)(2018)
Revision Status Revised
Impairment from Pollutant or Pollution: Pollutant
 
Regional Board Conclusion: Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.
 
Regional Board Decision Recommendation: After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
 
State Board Review of Regional Board Conclusion and Recommendation:
 
State Board Decision Recommendation: After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.
 
 
Line of Evidence (LOE) for Decision ID 106091, PCBs (Polychlorinated biphenyls)
Region 9     
Santa Margarita Lagoon
 
LOE ID: 138491
 
Pollutant: PCBs (Polychlorinated biphenyls)
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Marine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Southern California Bight Project 2013 data for Santa Margarita Lagoon to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for PCBs (Polychlorinated biphenyls) .
Data Reference: Sediment, Toxicity data for the 2020/2022 integrated report in Region 9.
 
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 (Water Quality Control Plan, San Diego Basin).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: The value used in this assessment comes from MacDonald et al., 2000b is the effects range median (ERM) value of 400 ng/g
Guideline Reference: Development and evaluation of consensus-based sediment effect concentrations for polychlorinated biphenyls. Environmental Toxicology and Chemistry. 19(5): 1403-1413
 
Spatial Representation: Data were collected from 1 station(s). Station Code(s): B13-8248.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-07 to 2013-08-07
Environmental Conditions:
QAPP Information: Bight Coastal Ecology Committee. 2013. Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual
 
Line of Evidence (LOE) for Decision ID 106091, PCBs (Polychlorinated biphenyls)
Region 9     
Santa Margarita Lagoon
 
LOE ID: 138594
 
Pollutant: PCBs (Polychlorinated biphenyls)
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Southern California Bight Project 2013 data for Santa Margarita Lagoon to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for PCBs (Polychlorinated biphenyls) .
Data Reference: Sediment, Toxicity data for the 2020/2022 integrated report in Region 9.
 
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 (Water Quality Control Plan, San Diego Basin).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: The value used in this assessment comes from MacDonald et al., 2000b is the effects range median (ERM) value of 400 ng/g
Guideline Reference: Development and evaluation of consensus-based sediment effect concentrations for polychlorinated biphenyls. Environmental Toxicology and Chemistry. 19(5): 1403-1413
 
Spatial Representation: Data were collected from 1 station(s). Station Code(s): B13-8253.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-07 to 2013-08-07
Environmental Conditions:
QAPP Information: Bight Coastal Ecology Committee. 2013. Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual
 
Line of Evidence (LOE) for Decision ID 106091, PCBs (Polychlorinated biphenyls)
Region 9     
Santa Margarita Lagoon
 
LOE ID: 138662
 
Pollutant: PCBs (Polychlorinated biphenyls)
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Southern California Bight Project 2013 data for Santa Margarita Lagoon to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for PCBs (Polychlorinated biphenyls) .
Data Reference: Sediment, Toxicity data for the 2020/2022 integrated report in Region 9.
 
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 (Water Quality Control Plan, San Diego Basin).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: The value used in this assessment comes from MacDonald et al., 2000b is the effects range median (ERM) value of 400 ng/g
Guideline Reference: Development and evaluation of consensus-based sediment effect concentrations for polychlorinated biphenyls. Environmental Toxicology and Chemistry. 19(5): 1403-1413
 
Spatial Representation: Data were collected from 1 station(s). Station Code(s): B13-8248.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-07 to 2013-08-07
Environmental Conditions:
QAPP Information: Bight Coastal Ecology Committee. 2013. Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual
 
Line of Evidence (LOE) for Decision ID 106091, PCBs (Polychlorinated biphenyls)
Region 9     
Santa Margarita Lagoon
 
LOE ID: 138513
 
Pollutant: PCBs (Polychlorinated biphenyls)
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Marine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Southern California Bight Project 2013 data for Santa Margarita Lagoon to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for PCBs (Polychlorinated biphenyls) .
Data Reference: Sediment, Toxicity data for the 2020/2022 integrated report in Region 9.
 
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 (Water Quality Control Plan, San Diego Basin).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: The value used in this assessment comes from MacDonald et al., 2000b is the effects range median (ERM) value of 400 ng/g
Guideline Reference: Development and evaluation of consensus-based sediment effect concentrations for polychlorinated biphenyls. Environmental Toxicology and Chemistry. 19(5): 1403-1413
 
Spatial Representation: Data were collected from 1 station(s). Station Code(s): B13-8250.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-07 to 2013-08-07
Environmental Conditions:
QAPP Information: Bight Coastal Ecology Committee. 2013. Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual
 
Line of Evidence (LOE) for Decision ID 106091, PCBs (Polychlorinated biphenyls)
Region 9     
Santa Margarita Lagoon
 
LOE ID: 138643
 
Pollutant: PCBs (Polychlorinated biphenyls)
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Southern California Bight Project 2013 data for Santa Margarita Lagoon to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for PCBs (Polychlorinated biphenyls) .
Data Reference: Sediment, Toxicity data for the 2020/2022 integrated report in Region 9.
 
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 (Water Quality Control Plan, San Diego Basin).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: The value used in this assessment comes from MacDonald et al., 2000b is the effects range median (ERM) value of 400 ng/g
Guideline Reference: Development and evaluation of consensus-based sediment effect concentrations for polychlorinated biphenyls. Environmental Toxicology and Chemistry. 19(5): 1403-1413
 
Spatial Representation: Data were collected from 1 station(s). Station Code(s): B13-8250.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-07 to 2013-08-07
Environmental Conditions:
QAPP Information: Bight Coastal Ecology Committee. 2013. Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual
 
Line of Evidence (LOE) for Decision ID 106091, PCBs (Polychlorinated biphenyls)
Region 9     
Santa Margarita Lagoon
 
LOE ID: 138691
 
Pollutant: PCBs (Polychlorinated biphenyls)
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Marine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Southern California Bight Project 2013 data for Santa Margarita Lagoon to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for PCBs (Polychlorinated biphenyls) .
Data Reference: Sediment, Toxicity data for the 2020/2022 integrated report in Region 9.
 
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 (Water Quality Control Plan, San Diego Basin).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: The value used in this assessment comes from MacDonald et al., 2000b is the effects range median (ERM) value of 400 ng/g
Guideline Reference: Development and evaluation of consensus-based sediment effect concentrations for polychlorinated biphenyls. Environmental Toxicology and Chemistry. 19(5): 1403-1413
 
Spatial Representation: Data were collected from 1 station(s). Station Code(s): B13-8253.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-07 to 2013-08-07
Environmental Conditions:
QAPP Information: Bight Coastal Ecology Committee. 2013. Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual
 
Line of Evidence (LOE) for Decision ID 106091, PCBs (Polychlorinated biphenyls)
Region 9     
Santa Margarita Lagoon
 
LOE ID: 78313
 
Pollutant: PCBs (Polychlorinated biphenyls)
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Bight data for Santa Margarita Lagoon to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for PCB, Total.
Data Reference: Data for Various Pollutants from Bight, 2008.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Water Quality Control Plan for the San Diego Basin (SDRWQCB 2007): All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life.
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: In marine and estuarine sediments the sediment quality guideline (predictive of sediment toxicity for sediment-dwelling organisms) for Total PCBs is 400 ng/g (MacDonald et al., 2000b).
Guideline Reference: Development and evaluation of consensus-based sediment effect concentrations for polychlorinated biphenyls. Environmental Toxicology and Chemistry. 19(5): 1403-1413
 
Spatial Representation: Data for this line of evidence for Santa Margarita Lagoon was collected at 1 monitoring site [ 902_6308 ]
Temporal Representation: Data was collected on a single day 8/29/2008.
Environmental Conditions: Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information: The Quality Assurance Project Plan from Southern California Bight was followed.
QAPP Information Reference(s): Quality Assurance Project Plan from Southern California Bight.
 
 
DECISION ID
106090
Region 9     
Santa Margarita Lagoon
 
Pollutant: Phenanthrene
Final Listing Decision: Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision: Do Not List on 303(d) list (TMDL required list)(2018)
Revision Status Revised
Impairment from Pollutant or Pollution: Pollutant
 
Regional Board Conclusion: Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.
 
Regional Board Decision Recommendation: After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
 
State Board Review of Regional Board Conclusion and Recommendation:
 
State Board Decision Recommendation: After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.
 
 
Line of Evidence (LOE) for Decision ID 106090, Phenanthrene
Region 9     
Santa Margarita Lagoon
 
LOE ID: 138776
 
Pollutant: Phenanthrene
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Southern California Bight Project 2013 data for Santa Margarita Lagoon to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for Phenanthrene .
Data Reference: Sediment, Toxicity data for the 2020/2022 integrated report in Region 9.
 
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 (Water Quality Control Plan, San Diego Basin).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: The evaluation guideline for Phenanthrene from MacDonald et al. 1996, which states that the probable effect level for Phenanthrene is 543.53 ng/g. (dw = Dry Weight)
Guideline Reference: Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278
 
Spatial Representation: Data were collected from 1 station(s). Station Code(s): B13-8250.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-07 to 2013-08-07
Environmental Conditions:
QAPP Information: Bight Coastal Ecology Committee. 2013. Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual
 
Line of Evidence (LOE) for Decision ID 106090, Phenanthrene
Region 9     
Santa Margarita Lagoon
 
LOE ID: 138812
 
Pollutant: Phenanthrene
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Marine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Southern California Bight Project 2013 data for Santa Margarita Lagoon to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for Phenanthrene .
Data Reference: Sediment, Toxicity data for the 2020/2022 integrated report in Region 9.
 
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 (Water Quality Control Plan, San Diego Basin).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: The evaluation guideline for Phenanthrene from MacDonald et al. 1996, which states that the probable effect level for Phenanthrene is 543.53 ng/g. (dw = Dry Weight)
Guideline Reference: Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278
 
Spatial Representation: Data were collected from 1 station(s). Station Code(s): B13-8248.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-07 to 2013-08-07
Environmental Conditions:
QAPP Information: Bight Coastal Ecology Committee. 2013. Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual
 
Line of Evidence (LOE) for Decision ID 106090, Phenanthrene
Region 9     
Santa Margarita Lagoon
 
LOE ID: 138934
 
Pollutant: Phenanthrene
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Southern California Bight Project 2013 data for Santa Margarita Lagoon to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for Phenanthrene .
Data Reference: Sediment, Toxicity data for the 2020/2022 integrated report in Region 9.
 
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 (Water Quality Control Plan, San Diego Basin).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: The evaluation guideline for Phenanthrene from MacDonald et al. 1996, which states that the probable effect level for Phenanthrene is 543.53 ng/g. (dw = Dry Weight)
Guideline Reference: Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278
 
Spatial Representation: Data were collected from 1 station(s). Station Code(s): B13-8248.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-07 to 2013-08-07
Environmental Conditions:
QAPP Information: Bight Coastal Ecology Committee. 2013. Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual
 
Line of Evidence (LOE) for Decision ID 106090, Phenanthrene
Region 9     
Santa Margarita Lagoon
 
LOE ID: 78315
 
Pollutant: Phenanthrene
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Bight data for Santa Margarita Lagoon to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Phenanthrene.
Data Reference: Data for Various Pollutants from Bight, 2008.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Water Quality Control Plan for the San Diego Basin (SDRWQCB 2007): All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life.
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: In marine and estuarine sediments the probable effect level (predictive of sediment toxicity for sediment-dwelling organisms) for Phenanthrene is 543.53 ng/g dry weight (MacDonald et al., 1996).
Guideline Reference: Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278
 
Spatial Representation: Data for this line of evidence for Santa Margarita Lagoon was collected at 1 monitoring site [ 902_6308 ]
Temporal Representation: Data was collected on a single day 8/29/2008.
Environmental Conditions: Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information: The Quality Assurance Project Plan from Southern California Bight was followed.
QAPP Information Reference(s): Quality Assurance Project Plan from Southern California Bight.
 
Line of Evidence (LOE) for Decision ID 106090, Phenanthrene
Region 9     
Santa Margarita Lagoon
 
LOE ID: 138831
 
Pollutant: Phenanthrene
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Southern California Bight Project 2013 data for Santa Margarita Lagoon to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for Phenanthrene .
Data Reference: Sediment, Toxicity data for the 2020/2022 integrated report in Region 9.
 
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 (Water Quality Control Plan, San Diego Basin).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: The evaluation guideline for Phenanthrene from MacDonald et al. 1996, which states that the probable effect level for Phenanthrene is 543.53 ng/g. (dw = Dry Weight)
Guideline Reference: Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278
 
Spatial Representation: Data were collected from 1 station(s). Station Code(s): B13-8253.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-07 to 2013-08-07
Environmental Conditions:
QAPP Information: Bight Coastal Ecology Committee. 2013. Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual
 
Line of Evidence (LOE) for Decision ID 106090, Phenanthrene
Region 9     
Santa Margarita Lagoon
 
LOE ID: 138956
 
Pollutant: Phenanthrene
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Marine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Southern California Bight Project 2013 data for Santa Margarita Lagoon to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for Phenanthrene .
Data Reference: Sediment, Toxicity data for the 2020/2022 integrated report in Region 9.
 
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 (Water Quality Control Plan, San Diego Basin).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: The evaluation guideline for Phenanthrene from MacDonald et al. 1996, which states that the probable effect level for Phenanthrene is 543.53 ng/g. (dw = Dry Weight)
Guideline Reference: Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278
 
Spatial Representation: Data were collected from 1 station(s). Station Code(s): B13-8250.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-07 to 2013-08-07
Environmental Conditions:
QAPP Information: Bight Coastal Ecology Committee. 2013. Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual
 
Line of Evidence (LOE) for Decision ID 106090, Phenanthrene
Region 9     
Santa Margarita Lagoon
 
LOE ID: 138865
 
Pollutant: Phenanthrene
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Marine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Southern California Bight Project 2013 data for Santa Margarita Lagoon to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for Phenanthrene .
Data Reference: Sediment, Toxicity data for the 2020/2022 integrated report in Region 9.
 
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 (Water Quality Control Plan, San Diego Basin).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: The evaluation guideline for Phenanthrene from MacDonald et al. 1996, which states that the probable effect level for Phenanthrene is 543.53 ng/g. (dw = Dry Weight)
Guideline Reference: Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278
 
Spatial Representation: Data were collected from 1 station(s). Station Code(s): B13-8253.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-07 to 2013-08-07
Environmental Conditions:
QAPP Information: Bight Coastal Ecology Committee. 2013. Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual
 
 
DECISION ID
106092
Region 9     
Santa Margarita Lagoon
 
Pollutant: Pyrene
Final Listing Decision: Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision: Do Not List on 303(d) list (TMDL required list)(2018)
Revision Status Revised
Impairment from Pollutant or Pollution: Pollutant
 
Regional Board Conclusion: Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.
 
Regional Board Decision Recommendation: After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
 
State Board Review of Regional Board Conclusion and Recommendation:
 
State Board Decision Recommendation: After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.
 
 
Line of Evidence (LOE) for Decision ID 106092, Pyrene
Region 9     
Santa Margarita Lagoon
 
LOE ID: 138966
 
Pollutant: Pyrene
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Marine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Southern California Bight Project 2013 data for Santa Margarita Lagoon to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for Pyrene .
Data Reference: Sediment, Toxicity data for the 2020/2022 integrated report in Region 9.
 
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 (Water Quality Control Plan, San Diego Basin).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: The evaluation guideline for Pyrene from MacDonald et al. 1996, which states that the probable effect level for Pyrene is 1397.4 ug/kg. (dw = Dry Weight)
Guideline Reference: Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278
 
Spatial Representation: Data were collected from 1 station(s). Station Code(s): B13-8253.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-07 to 2013-08-07
Environmental Conditions:
QAPP Information: Bight Coastal Ecology Committee. 2013. Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual
 
Line of Evidence (LOE) for Decision ID 106092, Pyrene
Region 9     
Santa Margarita Lagoon
 
LOE ID: 138960
 
Pollutant: Pyrene
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Southern California Bight Project 2013 data for Santa Margarita Lagoon to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for Pyrene .
Data Reference: Sediment, Toxicity data for the 2020/2022 integrated report in Region 9.
 
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 (Water Quality Control Plan, San Diego Basin).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: The evaluation guideline for Pyrene from MacDonald et al. 1996, which states that the probable effect level for Pyrene is 1397.4 ug/kg. (dw = Dry Weight)
Guideline Reference: Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278
 
Spatial Representation: Data were collected from 1 station(s). Station Code(s): B13-8250.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-07 to 2013-08-07
Environmental Conditions:
QAPP Information: Bight Coastal Ecology Committee. 2013. Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual
 
Line of Evidence (LOE) for Decision ID 106092, Pyrene
Region 9     
Santa Margarita Lagoon
 
LOE ID: 138965
 
Pollutant: Pyrene
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Marine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Southern California Bight Project 2013 data for Santa Margarita Lagoon to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for Pyrene .
Data Reference: Sediment, Toxicity data for the 2020/2022 integrated report in Region 9.
 
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 (Water Quality Control Plan, San Diego Basin).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: The evaluation guideline for Pyrene from MacDonald et al. 1996, which states that the probable effect level for Pyrene is 1397.4 ug/kg. (dw = Dry Weight)
Guideline Reference: Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278
 
Spatial Representation: Data were collected from 1 station(s). Station Code(s): B13-8250.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-07 to 2013-08-07
Environmental Conditions:
QAPP Information: Bight Coastal Ecology Committee. 2013. Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual
 
Line of Evidence (LOE) for Decision ID 106092, Pyrene
Region 9     
Santa Margarita Lagoon
 
LOE ID: 138767
 
Pollutant: Pyrene
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Southern California Bight Project 2013 data for Santa Margarita Lagoon to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for Pyrene .
Data Reference: Sediment, Toxicity data for the 2020/2022 integrated report in Region 9.
 
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 (Water Quality Control Plan, San Diego Basin).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: The evaluation guideline for Pyrene from MacDonald et al. 1996, which states that the probable effect level for Pyrene is 1397.4 ug/kg. (dw = Dry Weight)
Guideline Reference: Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278
 
Spatial Representation: Data were collected from 1 station(s). Station Code(s): B13-8253.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-07 to 2013-08-07
Environmental Conditions:
QAPP Information: Bight Coastal Ecology Committee. 2013. Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual
 
Line of Evidence (LOE) for Decision ID 106092, Pyrene
Region 9     
Santa Margarita Lagoon
 
LOE ID: 78316
 
Pollutant: Pyrene
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Bight data for Santa Margarita Lagoon to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Pyrene.
Data Reference: Data for Various Pollutants from Bight, 2008.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Water Quality Control Plan for the San Diego Basin (SDRWQCB 2007): All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life.
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: In marine and estuarine sediments the probable effect level (predictive of sediment toxicity for sediment-dwelling organisms) for Pyrene is 1397.4 ng/g dry weight (MacDonald et al., 1996).
Guideline Reference: Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278
 
Spatial Representation: Data for this line of evidence for Santa Margarita Lagoon was collected at 1 monitoring site [ 902_6308 ]
Temporal Representation: Data was collected on a single day 8/29/2008.
Environmental Conditions: Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information: The Quality Assurance Project Plan from Southern California Bight was followed.
QAPP Information Reference(s): Quality Assurance Project Plan from Southern California Bight.
 
Line of Evidence (LOE) for Decision ID 106092, Pyrene
Region 9     
Santa Margarita Lagoon
 
LOE ID: 138889
 
Pollutant: Pyrene
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Southern California Bight Project 2013 data for Santa Margarita Lagoon to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for Pyrene .
Data Reference: Sediment, Toxicity data for the 2020/2022 integrated report in Region 9.
 
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 (Water Quality Control Plan, San Diego Basin).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: The evaluation guideline for Pyrene from MacDonald et al. 1996, which states that the probable effect level for Pyrene is 1397.4 ug/kg. (dw = Dry Weight)
Guideline Reference: Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278
 
Spatial Representation: Data were collected from 1 station(s). Station Code(s): B13-8248.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-07 to 2013-08-07
Environmental Conditions:
QAPP Information: Bight Coastal Ecology Committee. 2013. Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual
 
Line of Evidence (LOE) for Decision ID 106092, Pyrene
Region 9     
Santa Margarita Lagoon
 
LOE ID: 138967
 
Pollutant: Pyrene
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Marine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Southern California Bight Project 2013 data for Santa Margarita Lagoon to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for Pyrene .
Data Reference: Sediment, Toxicity data for the 2020/2022 integrated report in Region 9.
 
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 (Water Quality Control Plan, San Diego Basin).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: The evaluation guideline for Pyrene from MacDonald et al. 1996, which states that the probable effect level for Pyrene is 1397.4 ug/kg. (dw = Dry Weight)
Guideline Reference: Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278
 
Spatial Representation: Data were collected from 1 station(s). Station Code(s): B13-8248.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-07 to 2013-08-07
Environmental Conditions:
QAPP Information: Bight Coastal Ecology Committee. 2013. Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual
 
 
DECISION ID
106093
Region 9     
Santa Margarita Lagoon
 
Pollutant: Silver
Final Listing Decision: Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision: Do Not List on 303(d) list (TMDL required list)(2018)
Revision Status Revised
Impairment from Pollutant or Pollution: Pollutant
 
Regional Board Conclusion: Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.
 
Regional Board Decision Recommendation: After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
 
State Board Review of Regional Board Conclusion and Recommendation:
 
State Board Decision Recommendation: After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.
 
 
Line of Evidence (LOE) for Decision ID 106093, Silver
Region 9     
Santa Margarita Lagoon
 
LOE ID: 139243
 
Pollutant: Silver
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Marine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Southern California Bight Project 2013 data for Santa Margarita Lagoon to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for Silver .
Data Reference: Sediment, Toxicity data for the 2020/2022 integrated report in Region 9.
 
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 (Water Quality Control Plan, San Diego Basin).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: The evaluation guideline for Silver from MacDonald et al. 1996, which states that the probable effect level for Silver is 1.77 ug/g. (dw = Dry Weight)
Guideline Reference: Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278
 
Spatial Representation: Data were collected from 1 station(s). Station Code(s): B13-8253.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-07 to 2013-08-07
Environmental Conditions:
QAPP Information: Bight Coastal Ecology Committee. 2013. Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual
 
Line of Evidence (LOE) for Decision ID 106093, Silver
Region 9     
Santa Margarita Lagoon
 
LOE ID: 139138
 
Pollutant: Silver
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Marine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Southern California Bight Project 2013 data for Santa Margarita Lagoon to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for Silver .
Data Reference: Sediment, Toxicity data for the 2020/2022 integrated report in Region 9.
 
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 (Water Quality Control Plan, San Diego Basin).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: The evaluation guideline for Silver from MacDonald et al. 1996, which states that the probable effect level for Silver is 1.77 ug/g. (dw = Dry Weight)
Guideline Reference: Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278
 
Spatial Representation: Data were collected from 1 station(s). Station Code(s): B13-8248.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-07 to 2013-08-07
Environmental Conditions:
QAPP Information: Bight Coastal Ecology Committee. 2013. Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual
 
Line of Evidence (LOE) for Decision ID 106093, Silver
Region 9     
Santa Margarita Lagoon
 
LOE ID: 139225
 
Pollutant: Silver
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Marine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Southern California Bight Project 2013 data for Santa Margarita Lagoon to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for Silver .
Data Reference: Sediment, Toxicity data for the 2020/2022 integrated report in Region 9.
 
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 (Water Quality Control Plan, San Diego Basin).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: The evaluation guideline for Silver from MacDonald et al. 1996, which states that the probable effect level for Silver is 1.77 ug/g. (dw = Dry Weight)
Guideline Reference: Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278
 
Spatial Representation: Data were collected from 1 station(s). Station Code(s): B13-8250.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-07 to 2013-08-07
Environmental Conditions:
QAPP Information: Bight Coastal Ecology Committee. 2013. Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual
 
Line of Evidence (LOE) for Decision ID 106093, Silver
Region 9     
Santa Margarita Lagoon
 
LOE ID: 139173
 
Pollutant: Silver
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Southern California Bight Project 2013 data for Santa Margarita Lagoon to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for Silver .
Data Reference: Sediment, Toxicity data for the 2020/2022 integrated report in Region 9.
 
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 (Water Quality Control Plan, San Diego Basin).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: The evaluation guideline for Silver from MacDonald et al. 1996, which states that the probable effect level for Silver is 1.77 ug/g. (dw = Dry Weight)
Guideline Reference: Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278
 
Spatial Representation: Data were collected from 1 station(s). Station Code(s): B13-8250.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-07 to 2013-08-07
Environmental Conditions:
QAPP Information: Bight Coastal Ecology Committee. 2013. Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual
 
Line of Evidence (LOE) for Decision ID 106093, Silver
Region 9     
Santa Margarita Lagoon
 
LOE ID: 139156
 
Pollutant: Silver
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Southern California Bight Project 2013 data for Santa Margarita Lagoon to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for Silver .
Data Reference: Sediment, Toxicity data for the 2020/2022 integrated report in Region 9.
 
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 (Water Quality Control Plan, San Diego Basin).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: The evaluation guideline for Silver from MacDonald et al. 1996, which states that the probable effect level for Silver is 1.77 ug/g. (dw = Dry Weight)
Guideline Reference: Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278
 
Spatial Representation: Data were collected from 1 station(s). Station Code(s): B13-8248.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-07 to 2013-08-07
Environmental Conditions:
QAPP Information: Bight Coastal Ecology Committee. 2013. Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual
 
Line of Evidence (LOE) for Decision ID 106093, Silver
Region 9     
Santa Margarita Lagoon
 
LOE ID: 139116
 
Pollutant: Silver
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Southern California Bight Project 2013 data for Santa Margarita Lagoon to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for Silver .
Data Reference: Sediment, Toxicity data for the 2020/2022 integrated report in Region 9.
 
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 (Water Quality Control Plan, San Diego Basin).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: The evaluation guideline for Silver from MacDonald et al. 1996, which states that the probable effect level for Silver is 1.77 ug/g. (dw = Dry Weight)
Guideline Reference: Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278
 
Spatial Representation: Data were collected from 1 station(s). Station Code(s): B13-8253.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-07 to 2013-08-07
Environmental Conditions:
QAPP Information: Bight Coastal Ecology Committee. 2013. Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual
 
Line of Evidence (LOE) for Decision ID 106093, Silver
Region 9     
Santa Margarita Lagoon
 
LOE ID: 78319
 
Pollutant: Silver
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Bight data for Santa Margarita Lagoon to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Silver.
Data Reference: Data for Various Pollutants from Bight, 2008.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Water Quality Control Plan for the San Diego Basin (SDRWQCB 2007): All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life.
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: In marine and estuarine sediments the probable effect level (predictive of sediment toxicity for sediment-dwelling organisms) for Silver is 1.77 ug/g dry weight (MacDonald et al., 1996).
Guideline Reference: Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278
 
Spatial Representation: Data for this line of evidence for Santa Margarita Lagoon was collected at 1 monitoring site [ 902_6308 ]
Temporal Representation: Data was collected on a single day 8/29/2008.
Environmental Conditions: Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information: The Quality Assurance Project Plan from Southern California Bight was followed.
QAPP Information Reference(s): Quality Assurance Project Plan from Southern California Bight.
 
 
DECISION ID
106095
Region 9     
Santa Margarita Lagoon
 
Pollutant: Zinc
Final Listing Decision: Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision: Do Not List on 303(d) list (TMDL required list)(2018)
Revision Status Revised
Impairment from Pollutant or Pollution: Pollutant
 
Regional Board Conclusion: Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.
 
Regional Board Decision Recommendation: After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
 
State Board Review of Regional Board Conclusion and Recommendation:
 
State Board Decision Recommendation: After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.
 
 
Line of Evidence (LOE) for Decision ID 106095, Zinc
Region 9     
Santa Margarita Lagoon
 
LOE ID: 139376
 
Pollutant: Zinc
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Marine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Southern California Bight Project 2013 data for Santa Margarita Lagoon to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for Zinc .
Data Reference: Sediment, Toxicity data for the 2020/2022 integrated report in Region 9.
 
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 (Water Quality Control Plan, San Diego Basin).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: The value used in this assessment comes from Long et al., 1995, and is the effects range median value of 410 PPM (ug/g)
Guideline Reference: Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278
 
Spatial Representation: Data were collected from 1 station(s). Station Code(s): B13-8250.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-07 to 2013-08-07
Environmental Conditions:
QAPP Information: Bight Coastal Ecology Committee. 2013. Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual
 
Line of Evidence (LOE) for Decision ID 106095, Zinc
Region 9     
Santa Margarita Lagoon
 
LOE ID: 139437
 
Pollutant: Zinc
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Southern California Bight Project 2013 data for Santa Margarita Lagoon to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for Zinc .
Data Reference: Sediment, Toxicity data for the 2020/2022 integrated report in Region 9.
 
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 (Water Quality Control Plan, San Diego Basin).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: The value used in this assessment comes from Long et al., 1995, and is the effects range median value of 410 PPM (ug/g)
Guideline Reference: Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278
 
Spatial Representation: Data were collected from 1 station(s). Station Code(s): B13-8253.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-07 to 2013-08-07
Environmental Conditions:
QAPP Information: Bight Coastal Ecology Committee. 2013. Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual
 
Line of Evidence (LOE) for Decision ID 106095, Zinc
Region 9     
Santa Margarita Lagoon
 
LOE ID: 139454
 
Pollutant: Zinc
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Southern California Bight Project 2013 data for Santa Margarita Lagoon to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for Zinc .
Data Reference: Sediment, Toxicity data for the 2020/2022 integrated report in Region 9.
 
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 (Water Quality Control Plan, San Diego Basin).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: The value used in this assessment comes from Long et al., 1995, and is the effects range median value of 410 PPM (ug/g)
Guideline Reference: Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278
 
Spatial Representation: Data were collected from 1 station(s). Station Code(s): B13-8248.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-07 to 2013-08-07
Environmental Conditions:
QAPP Information: Bight Coastal Ecology Committee. 2013. Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual
 
Line of Evidence (LOE) for Decision ID 106095, Zinc
Region 9     
Santa Margarita Lagoon
 
LOE ID: 78320
 
Pollutant: Zinc
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Bight data for Santa Margarita Lagoon to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Zinc.
Data Reference: Data for Various Pollutants from Bight, 2008.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Water Quality Control Plan for the San Diego Basin (SDRWQCB 2007): All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life.
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: In marine and estuarine sediments the effects range median (predictive of sediment toxicity for sediment-dwelling organisms) for Zinc is 410 ug/g dry weight (Long et al., 1995).
Guideline Reference: Incidence of adverse biological effects within ranges of chemical concentrations in marine and estuary sediments. Environmental Management. 19, (1): 81-97
 
Spatial Representation: Data for this line of evidence for Santa Margarita Lagoon was collected at 1 monitoring site [ 902_6308 ]
Temporal Representation: Data was collected on a single day 8/29/2008.
Environmental Conditions: Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information: The Quality Assurance Project Plan from Southern California Bight was followed.
QAPP Information Reference(s): Quality Assurance Project Plan from Southern California Bight.
 
Line of Evidence (LOE) for Decision ID 106095, Zinc
Region 9     
Santa Margarita Lagoon
 
LOE ID: 139381
 
Pollutant: Zinc
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Southern California Bight Project 2013 data for Santa Margarita Lagoon to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for Zinc .
Data Reference: Sediment, Toxicity data for the 2020/2022 integrated report in Region 9.
 
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 (Water Quality Control Plan, San Diego Basin).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: The value used in this assessment comes from Long et al., 1995, and is the effects range median value of 410 PPM (ug/g)
Guideline Reference: Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278
 
Spatial Representation: Data were collected from 1 station(s). Station Code(s): B13-8250.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-07 to 2013-08-07
Environmental Conditions:
QAPP Information: Bight Coastal Ecology Committee. 2013. Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual
 
Line of Evidence (LOE) for Decision ID 106095, Zinc
Region 9     
Santa Margarita Lagoon
 
LOE ID: 139464
 
Pollutant: Zinc
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Marine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Southern California Bight Project 2013 data for Santa Margarita Lagoon to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for Zinc .
Data Reference: Sediment, Toxicity data for the 2020/2022 integrated report in Region 9.
 
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 (Water Quality Control Plan, San Diego Basin).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: The value used in this assessment comes from Long et al., 1995, and is the effects range median value of 410 PPM (ug/g)
Guideline Reference: Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278
 
Spatial Representation: Data were collected from 1 station(s). Station Code(s): B13-8253.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-07 to 2013-08-07
Environmental Conditions:
QAPP Information: Bight Coastal Ecology Committee. 2013. Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual
 
Line of Evidence (LOE) for Decision ID 106095, Zinc
Region 9     
Santa Margarita Lagoon
 
LOE ID: 139417
 
Pollutant: Zinc
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Marine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Southern California Bight Project 2013 data for Santa Margarita Lagoon to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the evaluation guideline for Zinc .
Data Reference: Sediment, Toxicity data for the 2020/2022 integrated report in Region 9.
 
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 (Water Quality Control Plan, San Diego Basin).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: The value used in this assessment comes from Long et al., 1995, and is the effects range median value of 410 PPM (ug/g)
Guideline Reference: Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278
 
Spatial Representation: Data were collected from 1 station(s). Station Code(s): B13-8248.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-07 to 2013-08-07
Environmental Conditions:
QAPP Information: Bight Coastal Ecology Committee. 2013. Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 2013 Regional Marine Monitoring Survey (Bight 13) Quality Assurance Manual
 
 
DECISION ID
70035
Region 9     
Santa Margarita Lagoon
 
Pollutant: Eutrophic
Final Listing Decision: Do Not Delist from 303(d) list (being addressed with action other than TMDL)
Last Listing Cycle's Final Listing Decision: Do Not Delist from 303(d) list (being addressed with action other than TMDL)(2016)
Revision Status Original
Sources: Agriculture-storm runoff
Expected Attainment Date: 2027
Implementation Action Other than TMDL: Active stake holder process ongoing to address the pollutant.
Impairment from Pollutant or Pollution: Pollutant
 
Regional Board Conclusion: Region 9 data was not included in the 2014 or 2012 Integrated Report so all decisions are carried over from the 2010 listing cycle.

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: 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 70035, Eutrophic
Region 9     
Santa Margarita Lagoon
 
LOE ID: 4730
 
Pollutant: Eutrophic
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Not Recorded
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 0
Number of Exceedances: 0
 
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
82152
Region 9     
Santa Margarita Lagoon
 
Pollutant: Endrin
Final Listing Decision: Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision: Do Not List on 303(d) list (TMDL required list)(2016)
Revision Status Original
Impairment from Pollutant or Pollution: Pollutant
 
Regional Board Conclusion: This pollutant is being considered for placement on the CWA section 303(d) List under section 3.6 of the Listing Policy. Under section 3.6 at least two lines of evidence are necessary to assess listing status for pollutants sediment, and pollutant concentrations in sediment must be associated with sediment toxicity to justify adding that pollutant to the CWA section 303(d) List.

One line of evidence is available in the administrative record to assess this pollutant. Zero of the one sample exceed the objective. Zero of one samples exhibited sediment toxicity.

Based on the readily available data and information, the weight of evidence indicates that there is insufficient justification for placing this water segment-pollutant combination on the CWA section 303(d) List.

This conclusion is based on the staff findings that:
1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy.
2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy.
3. Zero of the one sample exceed the objective and this sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is fully supported using table 3.1.
4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.
 
Regional Board Decision Recommendation: After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
 
State Board Review of Regional Board Conclusion and Recommendation:
 
State Board Decision Recommendation: After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.
 
 
Line of Evidence (LOE) for Decision ID 82152, Endrin
Region 9     
Santa Margarita Lagoon
 
LOE ID: 78340
 
Pollutant: Endrin
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Bight data for Santa Margarita Lagoon to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Endrin.
Data Reference: Data for Various Pollutants from Bight, 2008.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Water Quality Control Plan for the San Diego Basin (SDRWQCB 2007): All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life.
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: In marine and estuarine sediments the sediment quality guideline (predictive of sediment toxicity for sediment-dwelling organisms) for Endrin is 0.76 ug/g oc (Fairey et al., 2001).
Guideline Reference: Technical basis for deriving sediment criteria for nonionic organic contaminants for the protection of benthic organisms by using equilibrium partitioning. EPA822-R-93-011. Washington, D.C.: Office of Water, USEPA
 
Spatial Representation: Data for this line of evidence for Santa Margarita Lagoon was collected at 1 monitoring site [ 902_6308 ]
Temporal Representation: Data was collected on a single day 8/29/2008.
Environmental Conditions: Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information: The Quality Assurance Project Plan from Southern California Bight was followed.
QAPP Information Reference(s): Quality Assurance Project Plan from Southern California Bight.
 
 
DECISION ID
84229
Region 9     
Santa Margarita Lagoon
 
Pollutant: Indicator Bacteria
Final Listing Decision: Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision: Do Not List on 303(d) list (TMDL required list)(2016)
Revision Status Original
Impairment from Pollutant or Pollution: Pollutant
 
Regional Board Conclusion: This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.

Four lines of evidence are available in the administrative record to assess this pollutant. Zero of the One samples exceed the contact recreation objective for Enterococcus, Zero out of one samples exceeded the contact and non contact recreation objective for Fecal Coliform, and Zero out of one samples exceeded the contact recreation objective for Total Coliform.

Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the CWA section 303(d) List.

This conclusion is based on the staff findings that:
1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy.
2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy.
3. Zero of the One samples exceed the contact recreation objective for Enterococcus, Zero out of one samples exceeded the contact and non contact recreation objective for Fecal Coliform, and Zero out of one samples exceeded the contact recreation objective for Total Coliform and this sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is fully supported using table 3.1.
4. Pursuant to Section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.
 
Regional Board Decision Recommendation: After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
 
State Board Review of Regional Board Conclusion and Recommendation:
 
State Board Decision Recommendation: After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.
 
 
Line of Evidence (LOE) for Decision ID 84229, Indicator Bacteria
Region 9     
Santa Margarita Lagoon
 
LOE ID: 76460
 
Pollutant: Fecal Coliform
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Water Contact Recreation
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PATHOGEN MONITORING
Data Used to Assess Water Quality: Water Board staff assessed County of San Diego data for Santa Margarita Lagoon to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Coliform, Fecal.
Data Reference: Data for Various Pollutants from Bight, 2008.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: In waters designated for water contact recreation (REC I), the fecal coliform concentration shall not exceed 400 MPN/100 ml.
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: Data for this line of evidence for Santa Margarita Lagoon was collected at 1 monitoring site [ Santa Margarita Estuary]
Temporal Representation: Data was collected on a single day 8/29/2008.
Environmental Conditions: Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information: The Quality Assurance Project Plan from Southern California Bight was followed.
QAPP Information Reference(s): Quality Assurance Project Plan from Southern California Bight.
 
Line of Evidence (LOE) for Decision ID 84229, Indicator Bacteria
Region 9     
Santa Margarita Lagoon
 
LOE ID: 76484
 
Pollutant: Fecal Coliform
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Non-Contact Recreation
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PATHOGEN MONITORING
Data Used to Assess Water Quality: Water Board staff assessed County of San Diego data for Santa Margarita Lagoon to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Coliform, Fecal.
Data Reference: Data for Various Pollutants from Bight, 2008.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: In waters designated for non contact recreation (REC 2), the fecal coliform concentration shall not exceed 4000 MPN/100 ml (Basin Plan).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: Data for this line of evidence for Santa Margarita Lagoon was collected at 1 monitoring site [ Santa Margarita Estuary]
Temporal Representation: Data was collected on a single day 8/29/2008.
Environmental Conditions: Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information: The Quality Assurance Project Plan from Southern California Bight was followed.
QAPP Information Reference(s): Quality Assurance Project Plan from Southern California Bight.
 
Line of Evidence (LOE) for Decision ID 84229, Indicator Bacteria
Region 9     
Santa Margarita Lagoon
 
LOE ID: 76468
 
Pollutant: Total Coliform
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Water Contact Recreation
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PATHOGEN MONITORING
Data Used to Assess Water Quality: Water Board staff assessed County of San Diego data for Santa Margarita Lagoon to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Coliform, Total.
Data Reference: Data for Various Pollutants from Bight, 2008.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: In waters designated for water contact recreation (REC I), the total coliform concentration shall not exceed 10000 MPN/100 ml (California Ocean Plan 2009).
Objective/Criterion Reference: California Ocean Plan Water Quality Control Plan Ocean Waters of California 2009
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: Data for this line of evidence for Santa Margarita Lagoon was collected at 1 monitoring site [ Santa Margarita Estuary]
Temporal Representation: Data was collected on a single day 8/29/2008.
Environmental Conditions: Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information: The Quality Assurance Project Plan from Southern California Bight was followed.
QAPP Information Reference(s): Quality Assurance Project Plan from Southern California Bight.
 
Line of Evidence (LOE) for Decision ID 84229, Indicator Bacteria
Region 9     
Santa Margarita Lagoon
 
LOE ID: 76483
 
Pollutant: Enterococcus
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Water Contact Recreation
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PATHOGEN MONITORING
Data Used to Assess Water Quality: Water Board staff assessed County of San Diego data for Santa Margarita Lagoon to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Enterococci.
Data Reference: Data for Various Pollutants from Bight, 2008.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Samples shall not exceed 104 organisms per 100 ml for enterococcus in waters designated for REC I beneficial use (Water Quality Control Plan for the San Diego Basin).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: Data for this line of evidence for Santa Margarita Lagoon was collected at 1 monitoring site [ Santa Margarita Estuary]
Temporal Representation: Data was collected on a single day 8/29/2008.
Environmental Conditions: Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information: The Quality Assurance Project Plan from Southern California Bight was followed.
QAPP Information Reference(s): Quality Assurance Project Plan from Southern California Bight.
 
 
DECISION ID
82476
Region 9     
Santa Margarita Lagoon
 
Pollutant: Lindane/gamma Hexachlorocyclohexane (gamma-HCH)
Final Listing Decision: Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision: Do Not List on 303(d) list (TMDL required list)(2016)
Revision Status Original
Impairment from Pollutant or Pollution: Pollutant
 
Regional Board Conclusion: This pollutant is being considered for placement on the CWA section 303(d) List under section 3.6 of the Listing Policy. Under section 3.6 at least two lines of evidence are necessary to assess listing status for pollutants sediment, and pollutant concentrations in sediment must be associated with sediment toxicity to justify adding that pollutant to the CWA section 303(d) List.

One line of evidence is available in the administrative record to assess this pollutant. Zero of the one sample exceed the objective. Zero of one samples exhibited sediment toxicity.

Based on the readily available data and information, the weight of evidence indicates that there is insufficient justification for placing this water segment-pollutant combination on the CWA section 303(d) List.

This conclusion is based on the staff findings that:
1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy.
2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy.
3. Zero of the one sample exceed the objective and this sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is fully supported using table 3.1.
4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.
 
Regional Board Decision Recommendation: After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
 
State Board Review of Regional Board Conclusion and Recommendation:
 
State Board Decision Recommendation: After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.
 
 
Line of Evidence (LOE) for Decision ID 82476, Lindane/gamma Hexachlorocyclohexane (gamma-HCH)
Region 9     
Santa Margarita Lagoon
 
LOE ID: 78306
 
Pollutant: Lindane/gamma Hexachlorocyclohexane (gamma-HCH)
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Bight data for Santa Margarita Lagoon to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for HCH, Gamma.
Data Reference: Data for Various Pollutants from Bight, 2008.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Water Quality Control Plan for the San Diego Basin (SDRWQCB 2007): All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life.
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: In marine and estuarine sediments the sediment quality guideline (predictive of sediment toxicity for sediment-dwelling organisms) for HCH, gamma(Lindane; BHC, gamma) is 0.37 ug/g oc (Fairey et al., 2001).
Guideline Reference: An evaluation of methods for calculating mean sediment quality guideline quotients as indicators of contamination and acute toxicity to amphipods by chemical mixtures. Environmental Toxicology and Chemistry. 20(10): 2276-2286
 
Spatial Representation: Data for this line of evidence for Santa Margarita Lagoon was collected at 1 monitoring site [ 902_6308 ]
Temporal Representation: Data was collected on a single day 8/29/2008.
Environmental Conditions: Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information: The Quality Assurance Project Plan from Southern California Bight was followed.
QAPP Information Reference(s): Quality Assurance Project Plan from Southern California Bight.
 
 
DECISION ID
82165
Region 9     
Santa Margarita Lagoon
 
Pollutant: Toxicity
Final Listing Decision: Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision: Do Not List on 303(d) list (TMDL required list)(2016)
Revision Status Original
Impairment from Pollutant or Pollution: Pollutant
 
Regional Board Conclusion: This pollutant is being considered for placement on the CWA section 303(d) List under section 3.6 of the Listing Policy. Under section 3.6 at least two lines of evidence are necessary to assess listing status for pollutants sediment, and pollutant concentrations in sediment must be associated with sediment toxicity to justify adding that pollutant to the CWA section 303(d) List.

One line of evidence is available in the administrative record to assess this pollutant. Zero of the eight sample exceed the objective. Zero of one samples exhibited sediment toxicity.

Based on the readily available data and information, the weight of evidence indicates that there is insufficient justification for placing this water segment-pollutant combination on the CWA section 303(d) List.

This conclusion is based on the staff findings that:
1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy.
2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy.
3. Zero of the eight samples exceed the objective and this sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is fully supported using table 3.1.
4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.
 
Regional Board Decision Recommendation: After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
 
State Board Review of Regional Board Conclusion and Recommendation:
 
State Board Decision Recommendation: After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.
 
 
Line of Evidence (LOE) for Decision ID 82165, Toxicity
Region 9     
Santa Margarita Lagoon
 
LOE ID: 95679
 
Pollutant: Toxicity
LOE Subgroup: Toxicity
Matrix: Sediment
Fraction: None
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 4
Number of Exceedances: 0
 
Data and Information Type: TOXICITY TESTING
Data Used to Assess Water Quality: Four samples were collected to test for toxicity. Zero of the samples exhibited statistically significant toxicity. The toxicity tests included survival of Eohaustorius estuarius and percent normal of Mytilus galloprovincialis.
Data Reference: Data for Various Pollutants from Bight, 2008.
 
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. Region 9 Basin Plan.
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: Toxicity is defined as a statistically significant effect in the sample exposure compared to the control using EPA-recommended hypothesis testing. 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 Freshwater and Marine Organisms, Fourth Edition. U.S. Environmental Protection Agency Office of Water, Washington, DC EPA-821-R-02-013
 
Spatial Representation: The samples were collected from sites 902_6303, 902_6311, 902_6314, 902_6317 Santa Margarita Estuary.
Temporal Representation: The samples were collected in August 2008.
Environmental Conditions:
QAPP Information: This data was collected under the Southern California Bight 2008 Regional Marine Monitoring Survey Quality Assurance Plan.
QAPP Information Reference(s): e-mail clarifying QAPP information
 
Line of Evidence (LOE) for Decision ID 82165, Toxicity
Region 9     
Santa Margarita Lagoon
 
LOE ID: 76469
 
Pollutant: Toxicity
LOE Subgroup: Toxicity
Matrix: Sediment
Fraction: None
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: TOXICITY TESTING
Data Used to Assess Water Quality: One sample was collected to test for toxicity. None of the samples exhibited statistically and biologically significant toxicity. The toxicity tests included survival of Eohaustorius estuarius and percent normal of Mytilus galloprovincialis.
Data Reference: Data for Various Pollutants from Bight, 2008.
 
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. Region 9 Basin Plan.
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline: Toxicity is defined as a statistically significant effect in the sample exposure compared to the control using EPA-recommended hypothesis testing. 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. Additionally, the biological significance of the sample is evaluated by determining whether the sample response is lower than the evaluation threshold.
Guideline Reference: Methods for Measuring the Acute Toxicity of Effluents and Receiving Waters to Freshwater and Marine Organisms, Fifth Edition. EPA-821-R-02-012
Guideline Reference: Short-term Methods for Estimating the Chronic Toxicity of Effluents and Receiving Waters to Freshwater Organisms. Fourth Edition. Office of Water, U.S. Environmental Protection Agency. Washington, D.C. EPA-821-R-02-013
 
Spatial Representation: The samples were collected from site 902_6308 Santa Margarita Estuary.
Temporal Representation: The samples were collected in August 2008.
Environmental Conditions:
QAPP Information: This data was collected under the Southern California Bight 2008 Regional Marine Monitoring Survey Quality Assurance Plan.
QAPP Information Reference(s): e-mail clarifying QAPP information
 
Line of Evidence (LOE) for Decision ID 82165, Toxicity
Region 9     
Santa Margarita Lagoon
 
LOE ID: 95680
 
Pollutant: Toxicity
LOE Subgroup: Toxicity
Matrix: Sediment
Fraction: None
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 3
Number of Exceedances: 0
 
Data and Information Type: TOXICITY TESTING
Data Used to Assess Water Quality: Three samples were collected to test for toxicity. None of the three samples exhibited statistically significant toxicity. The toxicity tests included survival of Eohaustorius estuarius. Each sample is a sediment composites from three different sites. tr11a
Data Reference: Data for Various Pollutants from Ambient Bay and Lagoon, 2003-2005.
 
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 for the San Diego Basin
 
Evaluation Guideline: Toxicity is defined as a statistically significant effect in the sample exposure compared to the control using EPA-recommended hypothesis testing. For SWAMP data exceedances are counted with the significant effect code SL. SL is defined as the result being significant compared to the negative control based on a statistical test, less than stated the alpha level, AND less than the evaluation threshold.
Guideline Reference: Methods for Measuring the Toxicity and Bioaccumulation of Sediment-associated Contaminants with Freshwater Invertebrates, Second Edition. U.S. Environmental Protection Agency Office of Research and Development, Duluth, MI , U.S. Environmental Protection Agency Office of Water, Washington, DC EPA-600/R-99/064
 
Spatial Representation: The samples were collected at stations 902SME_2003 a composite of 902_SME1L1_2003, 902_SME2L2_2003, and 902_SME2R1_2003. Station 902SME_2004 a composite of 902_SME1R1_2004, 902_SME2M1_2004, and 902_SME2R2_2004. Station 902SME_2005, a composite of 902_SME2M1_2005, 902_SME2R5_2005, 902_SME3R5_2005.
Temporal Representation: The samples were collected in July 2003, 2004, and 2005.
Environmental Conditions:
QAPP Information: The data was collected under the County of San Diego Ambient Bay and Lagoon Monitoring Project 2003-2005. Annual Report for the Receiving Waters and Urban Runoff Monitoring section covered under the San Diego County Municipal National Pollutant Discharge
QAPP Information Reference(s): Quality Assurance Project Plan from Enviromatrix Analyticial Rev. 18.