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

Supporting Information

Regional Board 9 - San Diego Region

Water Body Name: Los Penasquitos Lagoon
Water Body ID: CAE9061000019990209152610
Water Body Type: Estuary
 
DECISION ID
106178
Region 9     
Los Penasquitos 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 though this water body is impaired for sediment toxicity, this water body-pollutant combination should not be placed on the section 303(d) list because applicable the water or sediment quality standards for these pollutants are not being exceeded or are insufficient to determine use support.
 
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 106178, 2-Methylnaphthalene
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 74213
 
Pollutant: Toxicity
LOE Subgroup: Toxicity
Matrix: Sediment
Fraction: None
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 3
Number of Exceedances: 2
 
Data and Information Type: TOXICITY TESTING
Data Used to Assess Water Quality: Three samples were collected to test for toxicity. Two 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.
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. 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: Methods for Assessing the Toxicity of Sediment-associated Contaminants with Estuarine and Marine Amphipods. June 1994. EPA 600/R-94/025
 
Spatial Representation: The samples were collected at 906LPL_2003, 906LPL_2004, and 906LPL_2005. Each of these sample location names consists of a composite from three different sites.
Temporal Representation: The samples were collected in 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 Elimination System (NPDES) Permit (RWQCB-Order NO. R9-2007-0001).
QAPP Information Reference(s): e-mail clarifying QAPP information
 
Line of Evidence (LOE) for Decision ID 106178, 2-Methylnaphthalene
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 138203
 
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 Los Penasquitos 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): B13-8169.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-01 to 2013-08-01
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 106178, 2-Methylnaphthalene
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 138242
 
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 Los Penasquitos 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): B13-8176.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-01 to 2013-08-01
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 106178, 2-Methylnaphthalene
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 138304
 
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 Los Penasquitos 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): B13-8176.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-01 to 2013-08-01
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 106178, 2-Methylnaphthalene
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 138208
 
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 Los Penasquitos 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): B13-8169.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-01 to 2013-08-01
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 106178, 2-Methylnaphthalene
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 78239
 
Pollutant: 2-Methylnaphthalene
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 5
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Bight data for Los Penasquitos Lagoon to determine beneficial use support and results are as follows: 0 of 5 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 Los Penasquitos Lagoon was collected at 5 monitoring sites [ 906_6228, 906_6229, 906_6230, 906_6232, 906_6236]
Temporal Representation: Data was collected on a single day 7/17/2008.
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 106178, 2-Methylnaphthalene
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 74214
 
Pollutant: Toxicity
LOE Subgroup: Toxicity
Matrix: Sediment
Fraction: None
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 5
Number of Exceedances: 1
 
Data and Information Type: TOXICITY TESTING
Data Used to Assess Water Quality: Five samples were collected to test for toxicity. One 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: Methods for Assessing the Toxicity of Sediment-associated Contaminants with Estuarine and Marine Amphipods. June 1994. EPA 600/R-94/025
 
Spatial Representation: The samples were collected from sites 906_6228, 906_6229, 906_6230, 906_6232, 906_6236 Los Penasquitos Lagoon.
Temporal Representation: The samples were collected in July 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
 
 
DECISION ID
106181
Region 9     
Los Penasquitos Lagoon
 
Pollutant: Anatoxin-A
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 106181, Anatoxin-A
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 140079
 
Pollutant: Anatoxin-A
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Water Contact Recreation
 
Number of Samples: 6
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed SWAMP RWB9 Monitoring data for Los Penasquitos Lagoon to determine beneficial use support and results are as follows: 0 of 6 samples exceeded the water quality threshold for Anatoxin-A.
Data Reference: Field, Habitat, Sediment, Tissue, Water data for the 2020/2022 integrated report in Region 9.
 
SWAMP Data: SWAMP
 
Water Quality Objective/Criterion: All waters shall be maintained free of toxic substances in concentrations that are toxic to, or 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 California Cyanobacteria and Harmful Algal Bloom (CCHAB) Network established detection of Anatoxin-A where the detection limit is no more than 1 ug/L as the water concentration that swimmers and other contact recreational users including water-skiing/jet-skiing, fishing, boating, sail boarding, and canoeing should use caution while recreating. As of the 2020 Listing Cycle this LOE intended as ancillary evidence only.
Guideline Reference: Appendix to the CCHAB preliminary changes to the statewide voluntary guidance on cyanoHABs in recreational waters, January 2016. Appendix A. Description of cyanotoxin triggers in recreational waters.
 
Spatial Representation: The samples were collected at 1 monitoring site (906LPCYNO)
Temporal Representation: The samples were collected between the dates of 2016-07-27 and 2016-09-12
Environmental Conditions:
QAPP Information: SWAMP QAPrP 2008, Nagoda and Busse, 2013. Quality Assurance Project Plan for Screening of Cyanotoxins in Lakes/Reservoirs and Coastal Wetlands in the San Diego Region, SWAMP QAPrP 2017
QAPP Information Reference(s): Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program
 
Line of Evidence (LOE) for Decision ID 106181, Anatoxin-A
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 140063
 
Pollutant: Anatoxin-A
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Water Contact Recreation
 
Number of Samples: 6
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed SWAMP RWB9 Monitoring data for Los Penasquitos Lagoon to determine beneficial use support and results are as follows: 0 of 6 samples exceeded the water quality threshold for Anatoxin-A.
Data Reference: Field, Habitat, Sediment, Tissue, Water data for the 2020/2022 integrated report in Region 9.
 
SWAMP Data: SWAMP
 
Water Quality Objective/Criterion: All waters shall be maintained free of toxic substances in concentrations that are toxic to, or 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 California Cyanobacteria and Harmful Algal Bloom (CCHAB) Network established 20 ug/L of Anatoxin-A as the water concentration protective of swimmers and other contact recreational users including water-skiing/jet-skiing, fishing, boating, sail boarding, and canoeing.
Guideline Reference: Appendix to the CCHAB preliminary changes to the statewide voluntary guidance on cyanoHABs in recreational waters, January 2016. Appendix A. Description of cyanotoxin triggers in recreational waters.
 
Spatial Representation: The samples were collected at 1 monitoring site (906LPCYNO)
Temporal Representation: The samples were collected between the dates of 2016-07-27 and 2016-09-12
Environmental Conditions:
QAPP Information: SWAMP QAPrP 2008, Nagoda and Busse, 2013. Quality Assurance Project Plan for Screening of Cyanotoxins in Lakes/Reservoirs and Coastal Wetlands in the San Diego Region, SWAMP QAPrP 2017
QAPP Information Reference(s): Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program
 
Line of Evidence (LOE) for Decision ID 106181, Anatoxin-A
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 140081
 
Pollutant: Anatoxin-A
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Water Contact Recreation
 
Number of Samples: 6
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed SWAMP RWB9 Monitoring data for Los Penasquitos Lagoon to determine beneficial use support and results are as follows: 0 of 6 samples exceeded the water quality threshold for Anatoxin-A.
Data Reference: Field, Habitat, Sediment, Tissue, Water data for the 2020/2022 integrated report in Region 9.
 
SWAMP Data: SWAMP
 
Water Quality Objective/Criterion: All waters shall be maintained free of toxic substances in concentrations that are toxic to, or 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 California Cyanobacteria and Harmful Algal Bloom (CCHAB) Network established detection of Anatoxin-A where the detection limit is no more than 1 ug/L as the water concentration that swimmers and other contact recreational users including water-skiing/jet-skiing, fishing, boating, sail boarding, and canoeing should use caution while recreating. As of the 2020 Listing Cycle this LOE intended as ancillary evidence only.
Guideline Reference: Appendix to the CCHAB preliminary changes to the statewide voluntary guidance on cyanoHABs in recreational waters, January 2016. Appendix A. Description of cyanotoxin triggers in recreational waters.
 
Spatial Representation: The samples were collected at 1 monitoring site (906LPCYNM)
Temporal Representation: The samples were collected between the dates of 2016-07-27 and 2016-09-12
Environmental Conditions:
QAPP Information: SWAMP QAPrP 2008, Nagoda and Busse, 2013. Quality Assurance Project Plan for Screening of Cyanotoxins in Lakes/Reservoirs and Coastal Wetlands in the San Diego Region, SWAMP QAPrP 2017
QAPP Information Reference(s): Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program
 
Line of Evidence (LOE) for Decision ID 106181, Anatoxin-A
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 140038
 
Pollutant: Anatoxin-A
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Water Contact Recreation
 
Number of Samples: 6
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed SWAMP RWB9 Monitoring data for Los Penasquitos Lagoon to determine beneficial use support and results are as follows: 0 of 6 samples exceeded the water quality threshold for Anatoxin-A.
Data Reference: Field, Habitat, Sediment, Tissue, Water data for the 2020/2022 integrated report in Region 9.
 
SWAMP Data: SWAMP
 
Water Quality Objective/Criterion: All waters shall be maintained free of toxic substances in concentrations that are toxic to, or 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 California Cyanobacteria and Harmful Algal Bloom (CCHAB) Network established 20 ug/L of Anatoxin-A as the water concentration protective of swimmers and other contact recreational users including water-skiing/jet-skiing, fishing, boating, sail boarding, and canoeing.
Guideline Reference: Appendix to the CCHAB preliminary changes to the statewide voluntary guidance on cyanoHABs in recreational waters, January 2016. Appendix A. Description of cyanotoxin triggers in recreational waters.
 
Spatial Representation: The samples were collected at 1 monitoring site (906LPCYNM)
Temporal Representation: The samples were collected between the dates of 2016-07-27 and 2016-09-12
Environmental Conditions:
QAPP Information: SWAMP QAPrP 2008, Nagoda and Busse, 2013. Quality Assurance Project Plan for Screening of Cyanotoxins in Lakes/Reservoirs and Coastal Wetlands in the San Diego Region, SWAMP QAPrP 2017
QAPP Information Reference(s): Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program
 
 
DECISION ID
106161
Region 9     
Los Penasquitos 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 106161, Antimony
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 78240
 
Pollutant: Antimony
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 5
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Bight data for Los Penasquitos Lagoon to determine beneficial use support and results are as follows: 0 of 5 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 Los Penasquitos Lagoon was collected at 5 monitoring sites [ 906_6228, 906_6229, 906_6230, 906_6232, 906_6236]
Temporal Representation: Data was collected on a single day 7/17/2008.
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 106161, Antimony
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 135308
 
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 Los Penasquitos 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): B13-8169.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-01 to 2013-08-01
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 106161, Antimony
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 135333
 
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 Los Penasquitos 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): B13-8176.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-01 to 2013-08-01
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 106161, Antimony
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 135406
 
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 Los Penasquitos 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): B13-8169.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-01 to 2013-08-01
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 106161, Antimony
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 135328
 
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 Los Penasquitos 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): B13-8176.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-01 to 2013-08-01
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
106163
Region 9     
Los Penasquitos 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 106163, Arsenic
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 135416
 
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 Los Penasquitos 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): B13-8169.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-01 to 2013-08-01
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 106163, Arsenic
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 78241
 
Pollutant: Arsenic
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 5
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Bight data for Los Penasquitos Lagoon to determine beneficial use support and results are as follows: 0 of 5 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 Los Penasquitos Lagoon was collected at 5 monitoring sites [ 906_6228, 906_6229, 906_6230, 906_6232, 906_6236]
Temporal Representation: Data was collected on a single day 7/17/2008.
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 106163, Arsenic
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 74213
 
Pollutant: Toxicity
LOE Subgroup: Toxicity
Matrix: Sediment
Fraction: None
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 3
Number of Exceedances: 2
 
Data and Information Type: TOXICITY TESTING
Data Used to Assess Water Quality: Three samples were collected to test for toxicity. Two 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.
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. 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: Methods for Assessing the Toxicity of Sediment-associated Contaminants with Estuarine and Marine Amphipods. June 1994. EPA 600/R-94/025
 
Spatial Representation: The samples were collected at 906LPL_2003, 906LPL_2004, and 906LPL_2005. Each of these sample location names consists of a composite from three different sites.
Temporal Representation: The samples were collected in 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 Elimination System (NPDES) Permit (RWQCB-Order NO. R9-2007-0001).
QAPP Information Reference(s): e-mail clarifying QAPP information
 
Line of Evidence (LOE) for Decision ID 106163, Arsenic
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 135404
 
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 Los Penasquitos 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): B13-8169.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-01 to 2013-08-01
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 106163, Arsenic
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 135277
 
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 Los Penasquitos 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): B13-8176.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-01 to 2013-08-01
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 106163, Arsenic
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 135375
 
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 Los Penasquitos 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): B13-8176.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-01 to 2013-08-01
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 106163, Arsenic
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 74214
 
Pollutant: Toxicity
LOE Subgroup: Toxicity
Matrix: Sediment
Fraction: None
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 5
Number of Exceedances: 1
 
Data and Information Type: TOXICITY TESTING
Data Used to Assess Water Quality: Five samples were collected to test for toxicity. One 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: Methods for Assessing the Toxicity of Sediment-associated Contaminants with Estuarine and Marine Amphipods. June 1994. EPA 600/R-94/025
 
Spatial Representation: The samples were collected from sites 906_6228, 906_6229, 906_6230, 906_6232, 906_6236 Los Penasquitos Lagoon.
Temporal Representation: The samples were collected in July 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
 
 
DECISION ID
106165
Region 9     
Los Penasquitos 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 106165, Benzo(a)anthracene
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 78242
 
Pollutant: Benzo(a)anthracene
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 5
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Bight data for Los Penasquitos Lagoon to determine beneficial use support and results are as follows: 0 of 5 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 Los Penasquitos Lagoon was collected at 5 monitoring sites [ 906_6228, 906_6229, 906_6230, 906_6232, 906_6236]
Temporal Representation: Data was collected on a single day 7/17/2008.
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 106165, Benzo(a)anthracene
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 135641
 
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 Los Penasquitos 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): B13-8176.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-01 to 2013-08-01
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 106165, Benzo(a)anthracene
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 135712
 
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 Los Penasquitos 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): B13-8169.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-01 to 2013-08-01
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 106165, Benzo(a)anthracene
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 135602
 
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 Los Penasquitos 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): B13-8176.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-01 to 2013-08-01
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 106165, Benzo(a)anthracene
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 135752
 
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 Los Penasquitos 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): B13-8169.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-01 to 2013-08-01
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
106164
Region 9     
Los Penasquitos 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 106164, Benzo(a)pyrene
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 135704
 
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 Los Penasquitos 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): B13-8169.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-01 to 2013-08-01
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 106164, Benzo(a)pyrene
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 135613
 
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 Los Penasquitos 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): B13-8176.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-01 to 2013-08-01
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 106164, Benzo(a)pyrene
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 135515
 
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 Los Penasquitos 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): B13-8176.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-01 to 2013-08-01
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 106164, Benzo(a)pyrene
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 135614
 
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 Los Penasquitos 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): B13-8169.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-01 to 2013-08-01
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
106166
Region 9     
Los Penasquitos Lagoon
 
Pollutant: Cadmium
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 106166, Cadmium
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 136068
 
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 Los Penasquitos 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): B13-8176.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-01 to 2013-08-01
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 106166, Cadmium
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 135808
 
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 Los Penasquitos 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): B13-8169.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-01 to 2013-08-01
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 106166, Cadmium
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 135897
 
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 Los Penasquitos 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): B13-8169.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-01 to 2013-08-01
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 106166, Cadmium
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 135784
 
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 Los Penasquitos 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): B13-8176.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-01 to 2013-08-01
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
106167
Region 9     
Los Penasquitos 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 106167, Chlordane
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 136290
 
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 Los Penasquitos 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): B13-8176.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-01 to 2013-08-01
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 106167, Chlordane
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 135868
 
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 Los Penasquitos 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): B13-8169.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-01 to 2013-08-01
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 106167, Chlordane
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 139217
 
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 Los Penasquitos 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): B13-8176.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-01 to 2013-08-01
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 106167, Chlordane
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 139086
 
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 Los Penasquitos 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): B13-8176.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-01 to 2013-08-01
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 106167, Chlordane
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 78244
 
Pollutant: Chlordane
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 5
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Bight data for Los Penasquitos Lagoon to determine beneficial use support and results are as follows: 0 of 5 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 Los Penasquitos Lagoon was collected at 5 monitoring sites [ 906_6228, 906_6229, 906_6230, 906_6232, 906_6236]
Temporal Representation: Data was collected on a single day 7/17/2008.
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 106167, Chlordane
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 139198
 
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 Los Penasquitos 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): B13-8169.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-01 to 2013-08-01
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 106167, Chlordane
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 135962
 
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 Los Penasquitos 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): B13-8169.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-01 to 2013-08-01
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 106167, Chlordane
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 139200
 
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 Los Penasquitos 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): B13-8169.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-01 to 2013-08-01
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 106167, Chlordane
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 135798
 
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 Los Penasquitos 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): B13-8176.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-01 to 2013-08-01
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 106167, Chlordane
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 74214
 
Pollutant: Toxicity
LOE Subgroup: Toxicity
Matrix: Sediment
Fraction: None
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 5
Number of Exceedances: 1
 
Data and Information Type: TOXICITY TESTING
Data Used to Assess Water Quality: Five samples were collected to test for toxicity. One 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: Methods for Assessing the Toxicity of Sediment-associated Contaminants with Estuarine and Marine Amphipods. June 1994. EPA 600/R-94/025
 
Spatial Representation: The samples were collected from sites 906_6228, 906_6229, 906_6230, 906_6232, 906_6236 Los Penasquitos Lagoon.
Temporal Representation: The samples were collected in July 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 106167, Chlordane
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 74213
 
Pollutant: Toxicity
LOE Subgroup: Toxicity
Matrix: Sediment
Fraction: None
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 3
Number of Exceedances: 2
 
Data and Information Type: TOXICITY TESTING
Data Used to Assess Water Quality: Three samples were collected to test for toxicity. Two 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.
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. 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: Methods for Assessing the Toxicity of Sediment-associated Contaminants with Estuarine and Marine Amphipods. June 1994. EPA 600/R-94/025
 
Spatial Representation: The samples were collected at 906LPL_2003, 906LPL_2004, and 906LPL_2005. Each of these sample location names consists of a composite from three different sites.
Temporal Representation: The samples were collected in 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 Elimination System (NPDES) Permit (RWQCB-Order NO. R9-2007-0001).
QAPP Information Reference(s): e-mail clarifying QAPP information
 
 
DECISION ID
106180
Region 9     
Los Penasquitos 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 106180, Chromium
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 136080
 
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 Los Penasquitos 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): B13-8176.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-01 to 2013-08-01
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 106180, Chromium
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 74214
 
Pollutant: Toxicity
LOE Subgroup: Toxicity
Matrix: Sediment
Fraction: None
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 5
Number of Exceedances: 1
 
Data and Information Type: TOXICITY TESTING
Data Used to Assess Water Quality: Five samples were collected to test for toxicity. One 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: Methods for Assessing the Toxicity of Sediment-associated Contaminants with Estuarine and Marine Amphipods. June 1994. EPA 600/R-94/025
 
Spatial Representation: The samples were collected from sites 906_6228, 906_6229, 906_6230, 906_6232, 906_6236 Los Penasquitos Lagoon.
Temporal Representation: The samples were collected in July 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 106180, Chromium
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 74213
 
Pollutant: Toxicity
LOE Subgroup: Toxicity
Matrix: Sediment
Fraction: None
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 3
Number of Exceedances: 2
 
Data and Information Type: TOXICITY TESTING
Data Used to Assess Water Quality: Three samples were collected to test for toxicity. Two 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.
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. 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: Methods for Assessing the Toxicity of Sediment-associated Contaminants with Estuarine and Marine Amphipods. June 1994. EPA 600/R-94/025
 
Spatial Representation: The samples were collected at 906LPL_2003, 906LPL_2004, and 906LPL_2005. Each of these sample location names consists of a composite from three different sites.
Temporal Representation: The samples were collected in 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 Elimination System (NPDES) Permit (RWQCB-Order NO. R9-2007-0001).
QAPP Information Reference(s): e-mail clarifying QAPP information
 
Line of Evidence (LOE) for Decision ID 106180, Chromium
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 78245
 
Pollutant: Chromium
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 5
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Bight data for Los Penasquitos Lagoon to determine beneficial use support and results are as follows: 0 of 5 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 Los Penasquitos Lagoon was collected at 5 monitoring sites [ 906_6228, 906_6229, 906_6230, 906_6232, 906_6236]
Temporal Representation: Data was collected on a single day 7/17/2008.
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 106180, Chromium
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 136240
 
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 Los Penasquitos 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): B13-8169.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-01 to 2013-08-01
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 106180, Chromium
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 136362
 
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 Los Penasquitos 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): B13-8169.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-01 to 2013-08-01
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 106180, Chromium
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 136199
 
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 Los Penasquitos 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): B13-8176.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-01 to 2013-08-01
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
106168
Region 9     
Los Penasquitos 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 106168, Chrysene (C1-C4)
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 78246
 
Pollutant: Chrysene (C1-C4)
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 5
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Bight data for Los Penasquitos Lagoon to determine beneficial use support and results are as follows: 0 of 5 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 Los Penasquitos Lagoon was collected at 5 monitoring sites [ 906_6228, 906_6229, 906_6230, 906_6232, 906_6236]
Temporal Representation: Data was collected on a single day 7/17/2008.
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 106168, Chrysene (C1-C4)
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 74213
 
Pollutant: Toxicity
LOE Subgroup: Toxicity
Matrix: Sediment
Fraction: None
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 3
Number of Exceedances: 2
 
Data and Information Type: TOXICITY TESTING
Data Used to Assess Water Quality: Three samples were collected to test for toxicity. Two 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.
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. 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: Methods for Assessing the Toxicity of Sediment-associated Contaminants with Estuarine and Marine Amphipods. June 1994. EPA 600/R-94/025
 
Spatial Representation: The samples were collected at 906LPL_2003, 906LPL_2004, and 906LPL_2005. Each of these sample location names consists of a composite from three different sites.
Temporal Representation: The samples were collected in 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 Elimination System (NPDES) Permit (RWQCB-Order NO. R9-2007-0001).
QAPP Information Reference(s): e-mail clarifying QAPP information
 
Line of Evidence (LOE) for Decision ID 106168, Chrysene (C1-C4)
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 74214
 
Pollutant: Toxicity
LOE Subgroup: Toxicity
Matrix: Sediment
Fraction: None
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 5
Number of Exceedances: 1
 
Data and Information Type: TOXICITY TESTING
Data Used to Assess Water Quality: Five samples were collected to test for toxicity. One 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: Methods for Assessing the Toxicity of Sediment-associated Contaminants with Estuarine and Marine Amphipods. June 1994. EPA 600/R-94/025
 
Spatial Representation: The samples were collected from sites 906_6228, 906_6229, 906_6230, 906_6232, 906_6236 Los Penasquitos Lagoon.
Temporal Representation: The samples were collected in July 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 106168, Chrysene (C1-C4)
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 136105
 
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 Los Penasquitos 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): B13-8176.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-01 to 2013-08-01
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 106168, Chrysene (C1-C4)
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 136207
 
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 Los Penasquitos 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): B13-8176.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-01 to 2013-08-01
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 106168, Chrysene (C1-C4)
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 136223
 
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 Los Penasquitos 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): B13-8169.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-01 to 2013-08-01
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 106168, Chrysene (C1-C4)
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 136285
 
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 Los Penasquitos 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): B13-8169.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-01 to 2013-08-01
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
106169
Region 9     
Los Penasquitos 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 106169, Copper
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 136443
 
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 Los Penasquitos 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): B13-8169.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-01 to 2013-08-01
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 106169, Copper
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 136408
 
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 Los Penasquitos 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): B13-8176.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-01 to 2013-08-01
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 106169, Copper
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 136544
 
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 Los Penasquitos 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): B13-8176.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-01 to 2013-08-01
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 106169, Copper
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 74214
 
Pollutant: Toxicity
LOE Subgroup: Toxicity
Matrix: Sediment
Fraction: None
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 5
Number of Exceedances: 1
 
Data and Information Type: TOXICITY TESTING
Data Used to Assess Water Quality: Five samples were collected to test for toxicity. One 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: Methods for Assessing the Toxicity of Sediment-associated Contaminants with Estuarine and Marine Amphipods. June 1994. EPA 600/R-94/025
 
Spatial Representation: The samples were collected from sites 906_6228, 906_6229, 906_6230, 906_6232, 906_6236 Los Penasquitos Lagoon.
Temporal Representation: The samples were collected in July 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 106169, Copper
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 74213
 
Pollutant: Toxicity
LOE Subgroup: Toxicity
Matrix: Sediment
Fraction: None
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 3
Number of Exceedances: 2
 
Data and Information Type: TOXICITY TESTING
Data Used to Assess Water Quality: Three samples were collected to test for toxicity. Two 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.
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. 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: Methods for Assessing the Toxicity of Sediment-associated Contaminants with Estuarine and Marine Amphipods. June 1994. EPA 600/R-94/025
 
Spatial Representation: The samples were collected at 906LPL_2003, 906LPL_2004, and 906LPL_2005. Each of these sample location names consists of a composite from three different sites.
Temporal Representation: The samples were collected in 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 Elimination System (NPDES) Permit (RWQCB-Order NO. R9-2007-0001).
QAPP Information Reference(s): e-mail clarifying QAPP information
 
Line of Evidence (LOE) for Decision ID 106169, Copper
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 78247
 
Pollutant: Copper
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 5
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Bight data for Los Penasquitos Lagoon to determine beneficial use support and results are as follows: 0 of 5 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 Los Penasquitos Lagoon was collected at 5 monitoring sites [ 906_6228, 906_6229, 906_6230, 906_6232, 906_6236]
Temporal Representation: Data was collected on a single day 7/17/2008.
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 106169, Copper
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 136691
 
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 Los Penasquitos 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): B13-8169.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-01 to 2013-08-01
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
106162
Region 9     
Los Penasquitos Lagoon
 
Pollutant: Cylindrospermopsin
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 106162, Cylindrospermopsin
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 141808
 
Pollutant: Cylindrospermopsin
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Dissolved
 
Beneficial Use: Water Contact Recreation
 
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 SWAMP RWB9 Monitoring data for Los Penasquitos Lagoon to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Cylindrospermopsin.
Data Reference: Field, Habitat, Sediment, Tissue, Water data for the 2020/2022 integrated report in Region 9.
 
SWAMP Data: SWAMP
 
Water Quality Objective/Criterion: All waters shall be maintained free of toxic substances in concentrations that are toxic to, or 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 California Cyanobacteria and Harmful Algal Bloom (CCHAB) Network established 1 ug/L of Cylindrospermopsin as the water concentration that swimmers and other contact recreational users including water-skiing/jet-skiing, fishing, boating, sail boarding, and canoeing should use caution while recreating. As of the 2020 Listing Cycle this LOE intended as ancillary evidence only.
Guideline Reference: Appendix to the CCHAB preliminary changes to the statewide voluntary guidance on cyanoHABs in recreational waters, January 2016. Appendix A. Description of cyanotoxin triggers in recreational waters.
 
Spatial Representation: The samples were collected at 1 monitoring site (906LPCYNO)
Temporal Representation: The samples were collected between the dates of 2016-07-27 and 2016-07-27
Environmental Conditions:
QAPP Information: SWAMP QAPrP 2008, Nagoda and Busse, 2013. Quality Assurance Project Plan for Screening of Cyanotoxins in Lakes/Reservoirs and Coastal Wetlands in the San Diego Region, SWAMP QAPrP 2017
QAPP Information Reference(s): Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program
 
Line of Evidence (LOE) for Decision ID 106162, Cylindrospermopsin
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 142023
 
Pollutant: Cylindrospermopsin
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Dissolved
 
Beneficial Use: Water Contact Recreation
 
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 SWAMP RWB9 Monitoring data for Los Penasquitos Lagoon to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Cylindrospermopsin.
Data Reference: Field, Habitat, Sediment, Tissue, Water data for the 2020/2022 integrated report in Region 9.
 
SWAMP Data: SWAMP
 
Water Quality Objective/Criterion: All waters shall be maintained free of toxic substances in concentrations that are toxic to, or 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 California Cyanobacteria and Harmful Algal Bloom (CCHAB) Network established 4 ug/L of Cylindrospermopsin as the water concentration protective of swimmers and other contact recreational users including water-skiing/jet-skiing, fishing, boating, sail boarding, and canoeing.
Guideline Reference: Appendix to the CCHAB preliminary changes to the statewide voluntary guidance on cyanoHABs in recreational waters, January 2016. Appendix A. Description of cyanotoxin triggers in recreational waters.
 
Spatial Representation: The samples were collected at 1 monitoring site (906LPCYNO)
Temporal Representation: The samples were collected between the dates of 2016-07-27 and 2016-07-27
Environmental Conditions:
QAPP Information: SWAMP QAPrP 2008, Nagoda and Busse, 2013. Quality Assurance Project Plan for Screening of Cyanotoxins in Lakes/Reservoirs and Coastal Wetlands in the San Diego Region, SWAMP QAPrP 2017
QAPP Information Reference(s): Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program
 
Line of Evidence (LOE) for Decision ID 106162, Cylindrospermopsin
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 142003
 
Pollutant: Cylindrospermopsin
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Water Contact Recreation
 
Number of Samples: 6
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed SWAMP RWB9 Monitoring data for Los Penasquitos Lagoon to determine beneficial use support and results are as follows: 0 of 6 samples exceeded the water quality threshold for Cylindrospermopsin.
Data Reference: Field, Habitat, Sediment, Tissue, Water data for the 2020/2022 integrated report in Region 9.
 
SWAMP Data: SWAMP
 
Water Quality Objective/Criterion: All waters shall be maintained free of toxic substances in concentrations that are toxic to, or 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 California Cyanobacteria and Harmful Algal Bloom (CCHAB) Network established 1 ug/L of Cylindrospermopsin as the water concentration that swimmers and other contact recreational users including water-skiing/jet-skiing, fishing, boating, sail boarding, and canoeing should use caution while recreating. As of the 2020 Listing Cycle this LOE intended as ancillary evidence only.
Guideline Reference: Appendix to the CCHAB preliminary changes to the statewide voluntary guidance on cyanoHABs in recreational waters, January 2016. Appendix A. Description of cyanotoxin triggers in recreational waters.
 
Spatial Representation: The samples were collected at 1 monitoring site (906LPCYNM)
Temporal Representation: The samples were collected between the dates of 2016-07-27 and 2016-09-12
Environmental Conditions:
QAPP Information: SWAMP QAPrP 2008, Nagoda and Busse, 2013. Quality Assurance Project Plan for Screening of Cyanotoxins in Lakes/Reservoirs and Coastal Wetlands in the San Diego Region, SWAMP QAPrP 2017
QAPP Information Reference(s): Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program
 
Line of Evidence (LOE) for Decision ID 106162, Cylindrospermopsin
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 142019
 
Pollutant: Cylindrospermopsin
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Water Contact Recreation
 
Number of Samples: 6
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed SWAMP RWB9 Monitoring data for Los Penasquitos Lagoon to determine beneficial use support and results are as follows: 0 of 6 samples exceeded the water quality threshold for Cylindrospermopsin.
Data Reference: Field, Habitat, Sediment, Tissue, Water data for the 2020/2022 integrated report in Region 9.
 
SWAMP Data: SWAMP
 
Water Quality Objective/Criterion: All waters shall be maintained free of toxic substances in concentrations that are toxic to, or 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 California Cyanobacteria and Harmful Algal Bloom (CCHAB) Network established 4 ug/L of Cylindrospermopsin as the water concentration protective of swimmers and other contact recreational users including water-skiing/jet-skiing, fishing, boating, sail boarding, and canoeing.
Guideline Reference: Appendix to the CCHAB preliminary changes to the statewide voluntary guidance on cyanoHABs in recreational waters, January 2016. Appendix A. Description of cyanotoxin triggers in recreational waters.
 
Spatial Representation: The samples were collected at 1 monitoring site (906LPCYNO)
Temporal Representation: The samples were collected between the dates of 2016-07-27 and 2016-09-12
Environmental Conditions:
QAPP Information: SWAMP QAPrP 2008, Nagoda and Busse, 2013. Quality Assurance Project Plan for Screening of Cyanotoxins in Lakes/Reservoirs and Coastal Wetlands in the San Diego Region, SWAMP QAPrP 2017
QAPP Information Reference(s): Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program
 
Line of Evidence (LOE) for Decision ID 106162, Cylindrospermopsin
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 142004
 
Pollutant: Cylindrospermopsin
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Water Contact Recreation
 
Number of Samples: 6
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed SWAMP RWB9 Monitoring data for Los Penasquitos Lagoon to determine beneficial use support and results are as follows: 0 of 6 samples exceeded the water quality threshold for Cylindrospermopsin.
Data Reference: Field, Habitat, Sediment, Tissue, Water data for the 2020/2022 integrated report in Region 9.
 
SWAMP Data: SWAMP
 
Water Quality Objective/Criterion: All waters shall be maintained free of toxic substances in concentrations that are toxic to, or 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 California Cyanobacteria and Harmful Algal Bloom (CCHAB) Network established 1 ug/L of Cylindrospermopsin as the water concentration that swimmers and other contact recreational users including water-skiing/jet-skiing, fishing, boating, sail boarding, and canoeing should use caution while recreating. As of the 2020 Listing Cycle this LOE intended as ancillary evidence only.
Guideline Reference: Appendix to the CCHAB preliminary changes to the statewide voluntary guidance on cyanoHABs in recreational waters, January 2016. Appendix A. Description of cyanotoxin triggers in recreational waters.
 
Spatial Representation: The samples were collected at 1 monitoring site (906LPCYNO)
Temporal Representation: The samples were collected between the dates of 2016-07-27 and 2016-09-12
Environmental Conditions:
QAPP Information: SWAMP QAPrP 2008, Nagoda and Busse, 2013. Quality Assurance Project Plan for Screening of Cyanotoxins in Lakes/Reservoirs and Coastal Wetlands in the San Diego Region, SWAMP QAPrP 2017
QAPP Information Reference(s): Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program
 
Line of Evidence (LOE) for Decision ID 106162, Cylindrospermopsin
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 142037
 
Pollutant: Cylindrospermopsin
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Water Contact Recreation
 
Number of Samples: 6
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed SWAMP RWB9 Monitoring data for Los Penasquitos Lagoon to determine beneficial use support and results are as follows: 0 of 6 samples exceeded the water quality threshold for Cylindrospermopsin.
Data Reference: Field, Habitat, Sediment, Tissue, Water data for the 2020/2022 integrated report in Region 9.
 
SWAMP Data: SWAMP
 
Water Quality Objective/Criterion: All waters shall be maintained free of toxic substances in concentrations that are toxic to, or 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 California Cyanobacteria and Harmful Algal Bloom (CCHAB) Network established 4 ug/L of Cylindrospermopsin as the water concentration protective of swimmers and other contact recreational users including water-skiing/jet-skiing, fishing, boating, sail boarding, and canoeing.
Guideline Reference: Appendix to the CCHAB preliminary changes to the statewide voluntary guidance on cyanoHABs in recreational waters, January 2016. Appendix A. Description of cyanotoxin triggers in recreational waters.
 
Spatial Representation: The samples were collected at 1 monitoring site (906LPCYNM)
Temporal Representation: The samples were collected between the dates of 2016-07-27 and 2016-09-12
Environmental Conditions:
QAPP Information: SWAMP QAPrP 2008, Nagoda and Busse, 2013. Quality Assurance Project Plan for Screening of Cyanotoxins in Lakes/Reservoirs and Coastal Wetlands in the San Diego Region, SWAMP QAPrP 2017
QAPP Information Reference(s): Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program
 
Line of Evidence (LOE) for Decision ID 106162, Cylindrospermopsin
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 142020
 
Pollutant: Cylindrospermopsin
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Dissolved
 
Beneficial Use: Water Contact Recreation
 
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 SWAMP RWB9 Monitoring data for Los Penasquitos Lagoon to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Cylindrospermopsin.
Data Reference: Field, Habitat, Sediment, Tissue, Water data for the 2020/2022 integrated report in Region 9.
 
SWAMP Data: SWAMP
 
Water Quality Objective/Criterion: All waters shall be maintained free of toxic substances in concentrations that are toxic to, or 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 California Cyanobacteria and Harmful Algal Bloom (CCHAB) Network established 4 ug/L of Cylindrospermopsin as the water concentration protective of swimmers and other contact recreational users including water-skiing/jet-skiing, fishing, boating, sail boarding, and canoeing.
Guideline Reference: Appendix to the CCHAB preliminary changes to the statewide voluntary guidance on cyanoHABs in recreational waters, January 2016. Appendix A. Description of cyanotoxin triggers in recreational waters.
 
Spatial Representation: The samples were collected at 1 monitoring site (906LPCYNM)
Temporal Representation: The samples were collected between the dates of 2016-07-27 and 2016-07-27
Environmental Conditions:
QAPP Information: SWAMP QAPrP 2008, Nagoda and Busse, 2013. Quality Assurance Project Plan for Screening of Cyanotoxins in Lakes/Reservoirs and Coastal Wetlands in the San Diego Region, SWAMP QAPrP 2017
QAPP Information Reference(s): Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program
 
Line of Evidence (LOE) for Decision ID 106162, Cylindrospermopsin
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 142035
 
Pollutant: Cylindrospermopsin
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Dissolved
 
Beneficial Use: Water Contact Recreation
 
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 SWAMP RWB9 Monitoring data for Los Penasquitos Lagoon to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Cylindrospermopsin.
Data Reference: Field, Habitat, Sediment, Tissue, Water data for the 2020/2022 integrated report in Region 9.
 
SWAMP Data: SWAMP
 
Water Quality Objective/Criterion: All waters shall be maintained free of toxic substances in concentrations that are toxic to, or 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 California Cyanobacteria and Harmful Algal Bloom (CCHAB) Network established 1 ug/L of Cylindrospermopsin as the water concentration that swimmers and other contact recreational users including water-skiing/jet-skiing, fishing, boating, sail boarding, and canoeing should use caution while recreating. As of the 2020 Listing Cycle this LOE intended as ancillary evidence only.
Guideline Reference: Appendix to the CCHAB preliminary changes to the statewide voluntary guidance on cyanoHABs in recreational waters, January 2016. Appendix A. Description of cyanotoxin triggers in recreational waters.
 
Spatial Representation: The samples were collected at 1 monitoring site (906LPCYNM)
Temporal Representation: The samples were collected between the dates of 2016-07-27 and 2016-07-27
Environmental Conditions:
QAPP Information: SWAMP QAPrP 2008, Nagoda and Busse, 2013. Quality Assurance Project Plan for Screening of Cyanotoxins in Lakes/Reservoirs and Coastal Wetlands in the San Diego Region, SWAMP QAPrP 2017
QAPP Information Reference(s): Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program
 
 
DECISION ID
106170
Region 9     
Los Penasquitos 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 106170, Dibenz[a,h]anthracene
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 74214
 
Pollutant: Toxicity
LOE Subgroup: Toxicity
Matrix: Sediment
Fraction: None
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 5
Number of Exceedances: 1
 
Data and Information Type: TOXICITY TESTING
Data Used to Assess Water Quality: Five samples were collected to test for toxicity. One 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: Methods for Assessing the Toxicity of Sediment-associated Contaminants with Estuarine and Marine Amphipods. June 1994. EPA 600/R-94/025
 
Spatial Representation: The samples were collected from sites 906_6228, 906_6229, 906_6230, 906_6232, 906_6236 Los Penasquitos Lagoon.
Temporal Representation: The samples were collected in July 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 106170, Dibenz[a,h]anthracene
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 137226
 
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 Los Penasquitos 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): B13-8176.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-01 to 2013-08-01
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 106170, Dibenz[a,h]anthracene
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 137234
 
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 Los Penasquitos 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): B13-8169.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-01 to 2013-08-01
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 106170, Dibenz[a,h]anthracene
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 74213
 
Pollutant: Toxicity
LOE Subgroup: Toxicity
Matrix: Sediment
Fraction: None
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 3
Number of Exceedances: 2
 
Data and Information Type: TOXICITY TESTING
Data Used to Assess Water Quality: Three samples were collected to test for toxicity. Two 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.
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. 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: Methods for Assessing the Toxicity of Sediment-associated Contaminants with Estuarine and Marine Amphipods. June 1994. EPA 600/R-94/025
 
Spatial Representation: The samples were collected at 906LPL_2003, 906LPL_2004, and 906LPL_2005. Each of these sample location names consists of a composite from three different sites.
Temporal Representation: The samples were collected in 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 Elimination System (NPDES) Permit (RWQCB-Order NO. R9-2007-0001).
QAPP Information Reference(s): e-mail clarifying QAPP information
 
Line of Evidence (LOE) for Decision ID 106170, Dibenz[a,h]anthracene
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 137233
 
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 Los Penasquitos 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): B13-8169.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-01 to 2013-08-01
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 106170, Dibenz[a,h]anthracene
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 78248
 
Pollutant: Dibenz[a,h]anthracene
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 5
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Bight data for Los Penasquitos Lagoon to determine beneficial use support and results are as follows: 0 of 5 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 Los Penasquitos Lagoon was collected at 5 monitoring sites [ 906_6228, 906_6229, 906_6230, 906_6232, 906_6236]
Temporal Representation: Data was collected on a single day 7/17/2008.
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 106170, Dibenz[a,h]anthracene
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 137199
 
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 Los Penasquitos 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): B13-8176.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-01 to 2013-08-01
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
106171
Region 9     
Los Penasquitos 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 106171, Lead
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 74214
 
Pollutant: Toxicity
LOE Subgroup: Toxicity
Matrix: Sediment
Fraction: None
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 5
Number of Exceedances: 1
 
Data and Information Type: TOXICITY TESTING
Data Used to Assess Water Quality: Five samples were collected to test for toxicity. One 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: Methods for Assessing the Toxicity of Sediment-associated Contaminants with Estuarine and Marine Amphipods. June 1994. EPA 600/R-94/025
 
Spatial Representation: The samples were collected from sites 906_6228, 906_6229, 906_6230, 906_6232, 906_6236 Los Penasquitos Lagoon.
Temporal Representation: The samples were collected in July 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 106171, Lead
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 74213
 
Pollutant: Toxicity
LOE Subgroup: Toxicity
Matrix: Sediment
Fraction: None
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 3
Number of Exceedances: 2
 
Data and Information Type: TOXICITY TESTING
Data Used to Assess Water Quality: Three samples were collected to test for toxicity. Two 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.
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. 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: Methods for Assessing the Toxicity of Sediment-associated Contaminants with Estuarine and Marine Amphipods. June 1994. EPA 600/R-94/025
 
Spatial Representation: The samples were collected at 906LPL_2003, 906LPL_2004, and 906LPL_2005. Each of these sample location names consists of a composite from three different sites.
Temporal Representation: The samples were collected in 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 Elimination System (NPDES) Permit (RWQCB-Order NO. R9-2007-0001).
QAPP Information Reference(s): e-mail clarifying QAPP information
 
Line of Evidence (LOE) for Decision ID 106171, Lead
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 137780
 
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 Los Penasquitos 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): B13-8176.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-01 to 2013-08-01
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 106171, Lead
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 137615
 
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 Los Penasquitos 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): B13-8169.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-01 to 2013-08-01
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 106171, Lead
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 78250
 
Pollutant: Lead
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 5
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Bight data for Los Penasquitos Lagoon to determine beneficial use support and results are as follows: 0 of 5 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 Los Penasquitos Lagoon was collected at 5 monitoring sites [ 906_6228, 906_6229, 906_6230, 906_6232, 906_6236]
Temporal Representation: Data was collected on a single day 7/17/2008.
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 106171, Lead
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 137704
 
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 Los Penasquitos 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): B13-8176.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-01 to 2013-08-01
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 106171, Lead
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 137822
 
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 Los Penasquitos 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): B13-8169.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-01 to 2013-08-01
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
128172
Region 9     
Los Penasquitos 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 128172, Mercury
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 138034
 
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 Los Penasquitos 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): B13-8169.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-01 to 2013-08-01
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 128172, Mercury
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 138095
 
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 Los Penasquitos 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): B13-8169.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-01 to 2013-08-01
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 128172, Mercury
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 74214
 
Pollutant: Toxicity
LOE Subgroup: Toxicity
Matrix: Sediment
Fraction: None
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 5
Number of Exceedances: 1
 
Data and Information Type: TOXICITY TESTING
Data Used to Assess Water Quality: Five samples were collected to test for toxicity. One 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: Methods for Assessing the Toxicity of Sediment-associated Contaminants with Estuarine and Marine Amphipods. June 1994. EPA 600/R-94/025
 
Spatial Representation: The samples were collected from sites 906_6228, 906_6229, 906_6230, 906_6232, 906_6236 Los Penasquitos Lagoon.
Temporal Representation: The samples were collected in July 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 128172, Mercury
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 137978
 
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 Los Penasquitos 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): B13-8176.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-01 to 2013-08-01
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 128172, Mercury
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 78252
 
Pollutant: Mercury
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 5
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Bight data for Los Penasquitos Lagoon to determine beneficial use support and results are as follows: 0 of 5 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 Los Penasquitos Lagoon was collected at 5 monitoring sites [ 906_6228, 906_6229, 906_6230, 906_6232, 906_6236]
Temporal Representation: Data was collected on a single day 7/17/2008.
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 128172, Mercury
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 137923
 
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 Los Penasquitos 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): B13-8176.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-01 to 2013-08-01
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 128172, Mercury
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 74213
 
Pollutant: Toxicity
LOE Subgroup: Toxicity
Matrix: Sediment
Fraction: None
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 3
Number of Exceedances: 2
 
Data and Information Type: TOXICITY TESTING
Data Used to Assess Water Quality: Three samples were collected to test for toxicity. Two 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.
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. 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: Methods for Assessing the Toxicity of Sediment-associated Contaminants with Estuarine and Marine Amphipods. June 1994. EPA 600/R-94/025
 
Spatial Representation: The samples were collected at 906LPL_2003, 906LPL_2004, and 906LPL_2005. Each of these sample location names consists of a composite from three different sites.
Temporal Representation: The samples were collected in 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 Elimination System (NPDES) Permit (RWQCB-Order NO. R9-2007-0001).
QAPP Information Reference(s): e-mail clarifying QAPP information
 
 
DECISION ID
126606
Region 9     
Los Penasquitos Lagoon
 
Pollutant: Microcystins
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 126606, Microcystins
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 143243
 
Pollutant: Microcystins
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Water Contact Recreation
 
Number of Samples: 6
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed SWAMP RWB9 Monitoring data for Los Penasquitos Lagoon to determine beneficial use support and results are as follows: 0 of 6 samples exceeded the water quality threshold for Microcystins.
Data Reference: Field, Habitat, Sediment, Tissue, Water data for the 2020/2022 integrated report in Region 9.
 
SWAMP Data: SWAMP
 
Water Quality Objective/Criterion: All waters shall be maintained free of toxic substances in concentrations that are toxic to, or 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 California Cyanobacteria and Harmful Algal Bloom (CCHAB) Network established 0.8 ug/L of Microcystins as the water concentration that swimmers and other contact recreational users including water-skiing/jet-skiing, fishing, boating, sail boarding, and canoeing should use caution while recreating. As of the 2020 Listing Cycle this LOE intended as ancillary evidence only.
Guideline Reference: Appendix to the CCHAB preliminary changes to the statewide voluntary guidance on cyanoHABs in recreational waters, January 2016. Appendix A. Description of cyanotoxin triggers in recreational waters.
 
Spatial Representation: The samples were collected at 1 monitoring site (906LPCYNM)
Temporal Representation: The samples were collected between the dates of 2016-07-27 and 2016-09-12
Environmental Conditions:
QAPP Information: SWAMP QAPrP 2008, Nagoda and Busse, 2013. Quality Assurance Project Plan for Screening of Cyanotoxins in Lakes/Reservoirs and Coastal Wetlands in the San Diego Region, SWAMP QAPrP 2017
QAPP Information Reference(s): Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program
 
Line of Evidence (LOE) for Decision ID 126606, Microcystins
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 143242
 
Pollutant: Microcystins
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Water Contact Recreation
 
Number of Samples: 6
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed SWAMP RWB9 Monitoring data for Los Penasquitos Lagoon to determine beneficial use support and results are as follows: 0 of 6 samples exceeded the water quality threshold for Microcystins.
Data Reference: Field, Habitat, Sediment, Tissue, Water data for the 2020/2022 integrated report in Region 9.
 
SWAMP Data: SWAMP
 
Water Quality Objective/Criterion: All waters shall be maintained free of toxic substances in concentrations that are toxic to, or 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: California Office of Environmental Health Hazard Assessment (OEHHA) established 2 ug/L as the water concentration that would that would protect swimmers and other recreational users including water-skiing/jet-skiing, fishing, boating, sail boarding, and canoeing (Office of Environmental Health Hazard Assessment Public Health Action Level for microcystin and Human Recreational Uses (May 2012)).
Guideline Reference: Toxicological Summary and Suggested Action Levels to Reduce Potential Adverse Health Effects of Six Cyanotoxins
 
Spatial Representation: The samples were collected at 1 monitoring site (906LPCYNM)
Temporal Representation: The samples were collected between the dates of 2016-07-27 and 2016-09-12
Environmental Conditions:
QAPP Information: SWAMP QAPrP 2008, Nagoda and Busse, 2013. Quality Assurance Project Plan for Screening of Cyanotoxins in Lakes/Reservoirs and Coastal Wetlands in the San Diego Region, SWAMP QAPrP 2017
QAPP Information Reference(s): Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program
 
Line of Evidence (LOE) for Decision ID 126606, Microcystins
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 143199
 
Pollutant: Microcystins
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Water Contact Recreation
 
Number of Samples: 6
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed SWAMP RWB9 Monitoring data for Los Penasquitos Lagoon to determine beneficial use support and results are as follows: 0 of 6 samples exceeded the water quality threshold for Microcystins.
Data Reference: Field, Habitat, Sediment, Tissue, Water data for the 2020/2022 integrated report in Region 9.
 
SWAMP Data: SWAMP
 
Water Quality Objective/Criterion: All waters shall be maintained free of toxic substances in concentrations that are toxic to, or 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 California Cyanobacteria and Harmful Algal Bloom (CCHAB) Network established 0.8 ug/L of Microcystins as the water concentration that swimmers and other contact recreational users including water-skiing/jet-skiing, fishing, boating, sail boarding, and canoeing should use caution while recreating. As of the 2020 Listing Cycle this LOE intended as ancillary evidence only.
Guideline Reference: Appendix to the CCHAB preliminary changes to the statewide voluntary guidance on cyanoHABs in recreational waters, January 2016. Appendix A. Description of cyanotoxin triggers in recreational waters.
 
Spatial Representation: The samples were collected at 1 monitoring site (906LPCYNO)
Temporal Representation: The samples were collected between the dates of 2016-07-27 and 2016-09-12
Environmental Conditions:
QAPP Information: SWAMP QAPrP 2008, Nagoda and Busse, 2013. Quality Assurance Project Plan for Screening of Cyanotoxins in Lakes/Reservoirs and Coastal Wetlands in the San Diego Region, SWAMP QAPrP 2017
QAPP Information Reference(s): Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program
 
Line of Evidence (LOE) for Decision ID 126606, Microcystins
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 143201
 
Pollutant: Microcystins
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Water Contact Recreation
 
Number of Samples: 6
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed SWAMP RWB9 Monitoring data for Los Penasquitos Lagoon to determine beneficial use support and results are as follows: 0 of 6 samples exceeded the water quality threshold for Microcystins.
Data Reference: Field, Habitat, Sediment, Tissue, Water data for the 2020/2022 integrated report in Region 9.
 
SWAMP Data: SWAMP
 
Water Quality Objective/Criterion: All waters shall be maintained free of toxic substances in concentrations that are toxic to, or 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: California Office of Environmental Health Hazard Assessment (OEHHA) established 2 ug/L as the water concentration that would that would protect swimmers and other recreational users including water-skiing/jet-skiing, fishing, boating, sail boarding, and canoeing (Office of Environmental Health Hazard Assessment Public Health Action Level for microcystin and Human Recreational Uses (May 2012)).
Guideline Reference: Toxicological Summary and Suggested Action Levels to Reduce Potential Adverse Health Effects of Six Cyanotoxins
 
Spatial Representation: The samples were collected at 1 monitoring site (906LPCYNO)
Temporal Representation: The samples were collected between the dates of 2016-07-27 and 2016-09-12
Environmental Conditions:
QAPP Information: SWAMP QAPrP 2008, Nagoda and Busse, 2013. Quality Assurance Project Plan for Screening of Cyanotoxins in Lakes/Reservoirs and Coastal Wetlands in the San Diego Region, SWAMP QAPrP 2017
QAPP Information Reference(s): Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program
 
 
DECISION ID
106172
Region 9     
Los Penasquitos Lagoon
 
Pollutant: Oxygen, Dissolved
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 106172, Oxygen, Dissolved
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 144470
 
Pollutant: Oxygen, Dissolved
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Marine Habitat
 
Number of Samples: 6
Number of Exceedances: 3
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed SWAMP RWB9 Monitoring data for Los Penasquitos Lagoon to determine beneficial use support and results are as follows: 3 of 6 samples exceeded the water quality threshold for Oxygen, Dissolved.
Data Reference: Field, Habitat, Sediment, Tissue, Water data for the 2020/2022 integrated report in Region 9.
 
SWAMP Data: SWAMP
 
Water Quality Objective/Criterion: Dissolved oxygen levels shall not be less than 5.0 mg/l in inland surface waters with designated the MAR beneficial use(Water Quality Control Plan, San Diego Basin)
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (906LPCYNM)
Temporal Representation: The samples were collected between the dates of 2016-07-27 and 2016-09-12
Environmental Conditions:
QAPP Information: SWAMP QAPrP 2008, Nagoda and Busse, 2013. Quality Assurance Project Plan for Screening of Cyanotoxins in Lakes/Reservoirs and Coastal Wetlands in the San Diego Region, SWAMP QAPrP 2017
QAPP Information Reference(s): Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program
 
Line of Evidence (LOE) for Decision ID 106172, Oxygen, Dissolved
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 144958
 
Pollutant: Oxygen, Dissolved
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Marine Habitat
 
Number of Samples: 7
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed SWAMP RWB9 Monitoring data for Los Penasquitos Lagoon to determine beneficial use support and results are as follows: 0 of 7 samples exceeded the water quality threshold for Oxygen, Dissolved.
Data Reference: Field, Habitat, Sediment, Tissue, Water data for the 2020/2022 integrated report in Region 9.
 
SWAMP Data: SWAMP
 
Water Quality Objective/Criterion: Dissolved oxygen levels shall not be less than 5.0 mg/l in inland surface waters with designated the MAR beneficial use(Water Quality Control Plan, San Diego Basin)
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (906LPCYNO)
Temporal Representation: The samples were collected between the dates of 2016-07-27 and 2016-09-29
Environmental Conditions:
QAPP Information: SWAMP QAPrP 2008, Nagoda and Busse, 2013. Quality Assurance Project Plan for Screening of Cyanotoxins in Lakes/Reservoirs and Coastal Wetlands in the San Diego Region, SWAMP QAPrP 2017
QAPP Information Reference(s): Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program
 
 
DECISION ID
127730
Region 9     
Los Penasquitos 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: 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.

Nine lines of evidence are available in the administrative record to assess this pollutant. Zero of the 21 samples exceed the water quality threshold for low molecular weight, high molecular weight, and total PAHs; zero of seven exceed the threshold for low molecular weight, zero of seven samples exceed the threshold for high molecular weight, and zero of seven exceed the threshold for total PAHs. This sample size is sufficient to determine beneficial use support with the power and confidence of the Listing Policy.

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 21 samples exceed the water quality threshold, and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy.
4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.
 
Regional Board Decision Recommendation: After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because applicable water quality standards are not being exceeded.
 
State Board Review of Regional Board Conclusion and Recommendation:
 
State Board Decision Recommendation: After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.
 
 
Line of Evidence (LOE) for Decision ID 127730, PAHs (Polycyclic Aromatic Hydrocarbons)
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 74213
 
Pollutant: Toxicity
LOE Subgroup: Toxicity
Matrix: Sediment
Fraction: None
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 3
Number of Exceedances: 2
 
Data and Information Type: TOXICITY TESTING
Data Used to Assess Water Quality: Three samples were collected to test for toxicity. Two 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.
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. 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: Methods for Assessing the Toxicity of Sediment-associated Contaminants with Estuarine and Marine Amphipods. June 1994. EPA 600/R-94/025
 
Spatial Representation: The samples were collected at 906LPL_2003, 906LPL_2004, and 906LPL_2005. Each of these sample location names consists of a composite from three different sites.
Temporal Representation: The samples were collected in 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 Elimination System (NPDES) Permit (RWQCB-Order NO. R9-2007-0001).
QAPP Information Reference(s): e-mail clarifying QAPP information
 
Line of Evidence (LOE) for Decision ID 127730, PAHs (Polycyclic Aromatic Hydrocarbons)
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 138600
 
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 Los Penasquitos 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): B13-8176.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-01 to 2013-08-01
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 127730, PAHs (Polycyclic Aromatic Hydrocarbons)
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 137930
 
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 Los Penasquitos 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): B13-8176.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-01 to 2013-08-01
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 127730, PAHs (Polycyclic Aromatic Hydrocarbons)
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 138280
 
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 Los Penasquitos 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): B13-8169.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-01 to 2013-08-01
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 127730, PAHs (Polycyclic Aromatic Hydrocarbons)
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 138147
 
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 Los Penasquitos 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): B13-8176.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-01 to 2013-08-01
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 127730, PAHs (Polycyclic Aromatic Hydrocarbons)
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 138140
 
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 Los Penasquitos 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): B13-8176.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-01 to 2013-08-01
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 127730, PAHs (Polycyclic Aromatic Hydrocarbons)
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 137640
 
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 Los Penasquitos 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): B13-8176.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-01 to 2013-08-01
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 127730, PAHs (Polycyclic Aromatic Hydrocarbons)
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 137623
 
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 Los Penasquitos 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): B13-8169.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-01 to 2013-08-01
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 127730, PAHs (Polycyclic Aromatic Hydrocarbons)
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 78255
 
Pollutant: PAHs (Polycyclic Aromatic Hydrocarbons)
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 5
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Bight data for Los Penasquitos Lagoon to determine beneficial use support and results are as follows: 0 of 5 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 Los Penasquitos Lagoon was collected at 5 monitoring sites [ 906_6228, 906_6229, 906_6230, 906_6232, 906_6236]
Temporal Representation: Data was collected on a single day 7/17/2008.
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 127730, PAHs (Polycyclic Aromatic Hydrocarbons)
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 78254
 
Pollutant: PAHs (Polycyclic Aromatic Hydrocarbons)
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 5
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Bight data for Los Penasquitos Lagoon to determine beneficial use support and results are as follows: 0 of 5 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 Los Penasquitos Lagoon was collected at 5 monitoring sites [ 906_6228, 906_6229, 906_6230, 906_6232, 906_6236]
Temporal Representation: Data was collected on a single day 7/17/2008.
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 127730, PAHs (Polycyclic Aromatic Hydrocarbons)
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 78253
 
Pollutant: PAHs (Polycyclic Aromatic Hydrocarbons)
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 5
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Bight data for Los Penasquitos Lagoon to determine beneficial use support and results are as follows: 0 of 5 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 Los Penasquitos Lagoon was collected at 5 monitoring sites [ 906_6228, 906_6229, 906_6230, 906_6232, 906_6236]
Temporal Representation: Data was collected on a single day 7/17/2008.
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 127730, PAHs (Polycyclic Aromatic Hydrocarbons)
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 138137
 
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 Los Penasquitos 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): B13-8169.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-01 to 2013-08-01
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 127730, PAHs (Polycyclic Aromatic Hydrocarbons)
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 74214
 
Pollutant: Toxicity
LOE Subgroup: Toxicity
Matrix: Sediment
Fraction: None
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 5
Number of Exceedances: 1
 
Data and Information Type: TOXICITY TESTING
Data Used to Assess Water Quality: Five samples were collected to test for toxicity. One 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: Methods for Assessing the Toxicity of Sediment-associated Contaminants with Estuarine and Marine Amphipods. June 1994. EPA 600/R-94/025
 
Spatial Representation: The samples were collected from sites 906_6228, 906_6229, 906_6230, 906_6232, 906_6236 Los Penasquitos Lagoon.
Temporal Representation: The samples were collected in July 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 127730, PAHs (Polycyclic Aromatic Hydrocarbons)
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 137644
 
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 Los Penasquitos 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): B13-8176.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-01 to 2013-08-01
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 127730, PAHs (Polycyclic Aromatic Hydrocarbons)
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 138620
 
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 Los Penasquitos 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): B13-8169.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-01 to 2013-08-01
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 127730, PAHs (Polycyclic Aromatic Hydrocarbons)
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 137697
 
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 Los Penasquitos 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): B13-8169.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-01 to 2013-08-01
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 127730, PAHs (Polycyclic Aromatic Hydrocarbons)
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 138043
 
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 Los Penasquitos 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): B13-8169.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-01 to 2013-08-01
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
106175
Region 9     
Los Penasquitos 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 106175, PCBs (Polychlorinated biphenyls)
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 78256
 
Pollutant: PCBs (Polychlorinated biphenyls)
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 5
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Bight data for Los Penasquitos Lagoon to determine beneficial use support and results are as follows: 0 of 5 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 Los Penasquitos Lagoon was collected at 5 monitoring sites [ 906_6228, 906_6229, 906_6230, 906_6232, 906_6236]
Temporal Representation: Data was collected on a single day 7/17/2008.
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 106175, PCBs (Polychlorinated biphenyls)
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 74213
 
Pollutant: Toxicity
LOE Subgroup: Toxicity
Matrix: Sediment
Fraction: None
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 3
Number of Exceedances: 2
 
Data and Information Type: TOXICITY TESTING
Data Used to Assess Water Quality: Three samples were collected to test for toxicity. Two 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.
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. 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: Methods for Assessing the Toxicity of Sediment-associated Contaminants with Estuarine and Marine Amphipods. June 1994. EPA 600/R-94/025
 
Spatial Representation: The samples were collected at 906LPL_2003, 906LPL_2004, and 906LPL_2005. Each of these sample location names consists of a composite from three different sites.
Temporal Representation: The samples were collected in 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 Elimination System (NPDES) Permit (RWQCB-Order NO. R9-2007-0001).
QAPP Information Reference(s): e-mail clarifying QAPP information
 
Line of Evidence (LOE) for Decision ID 106175, PCBs (Polychlorinated biphenyls)
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 74214
 
Pollutant: Toxicity
LOE Subgroup: Toxicity
Matrix: Sediment
Fraction: None
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 5
Number of Exceedances: 1
 
Data and Information Type: TOXICITY TESTING
Data Used to Assess Water Quality: Five samples were collected to test for toxicity. One 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: Methods for Assessing the Toxicity of Sediment-associated Contaminants with Estuarine and Marine Amphipods. June 1994. EPA 600/R-94/025
 
Spatial Representation: The samples were collected from sites 906_6228, 906_6229, 906_6230, 906_6232, 906_6236 Los Penasquitos Lagoon.
Temporal Representation: The samples were collected in July 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 106175, PCBs (Polychlorinated biphenyls)
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 138554
 
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 Los Penasquitos 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): B13-8169.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-01 to 2013-08-01
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 106175, PCBs (Polychlorinated biphenyls)
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 138458
 
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 Los Penasquitos 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): B13-8176.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-01 to 2013-08-01
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 106175, PCBs (Polychlorinated biphenyls)
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 138490
 
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 Los Penasquitos 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): B13-8176.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-01 to 2013-08-01
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 106175, PCBs (Polychlorinated biphenyls)
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 138479
 
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 Los Penasquitos 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): B13-8169.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-01 to 2013-08-01
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
106174
Region 9     
Los Penasquitos 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 106174, Phenanthrene
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 138470
 
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 Los Penasquitos 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): B13-8169.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-01 to 2013-08-01
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 106174, Phenanthrene
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 138688
 
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 Los Penasquitos 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): B13-8169.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-01 to 2013-08-01
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 106174, Phenanthrene
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 138706
 
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 Los Penasquitos 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): B13-8176.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-01 to 2013-08-01
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 106174, Phenanthrene
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 138845
 
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 Los Penasquitos 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): B13-8176.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-01 to 2013-08-01
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 106174, Phenanthrene
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 74214
 
Pollutant: Toxicity
LOE Subgroup: Toxicity
Matrix: Sediment
Fraction: None
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 5
Number of Exceedances: 1
 
Data and Information Type: TOXICITY TESTING
Data Used to Assess Water Quality: Five samples were collected to test for toxicity. One 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: Methods for Assessing the Toxicity of Sediment-associated Contaminants with Estuarine and Marine Amphipods. June 1994. EPA 600/R-94/025
 
Spatial Representation: The samples were collected from sites 906_6228, 906_6229, 906_6230, 906_6232, 906_6236 Los Penasquitos Lagoon.
Temporal Representation: The samples were collected in July 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 106174, Phenanthrene
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 74213
 
Pollutant: Toxicity
LOE Subgroup: Toxicity
Matrix: Sediment
Fraction: None
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 3
Number of Exceedances: 2
 
Data and Information Type: TOXICITY TESTING
Data Used to Assess Water Quality: Three samples were collected to test for toxicity. Two 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.
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. 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: Methods for Assessing the Toxicity of Sediment-associated Contaminants with Estuarine and Marine Amphipods. June 1994. EPA 600/R-94/025
 
Spatial Representation: The samples were collected at 906LPL_2003, 906LPL_2004, and 906LPL_2005. Each of these sample location names consists of a composite from three different sites.
Temporal Representation: The samples were collected in 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 Elimination System (NPDES) Permit (RWQCB-Order NO. R9-2007-0001).
QAPP Information Reference(s): e-mail clarifying QAPP information
 
Line of Evidence (LOE) for Decision ID 106174, Phenanthrene
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 78257
 
Pollutant: Phenanthrene
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 5
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Bight data for Los Penasquitos Lagoon to determine beneficial use support and results are as follows: 0 of 5 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 Los Penasquitos Lagoon was collected at 5 monitoring sites [ 906_6228, 906_6229, 906_6230, 906_6232, 906_6236]
Temporal Representation: Data was collected on a single day 7/17/2008.
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
106176
Region 9     
Los Penasquitos 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 106176, Pyrene
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 74213
 
Pollutant: Toxicity
LOE Subgroup: Toxicity
Matrix: Sediment
Fraction: None
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 3
Number of Exceedances: 2
 
Data and Information Type: TOXICITY TESTING
Data Used to Assess Water Quality: Three samples were collected to test for toxicity. Two 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.
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. 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: Methods for Assessing the Toxicity of Sediment-associated Contaminants with Estuarine and Marine Amphipods. June 1994. EPA 600/R-94/025
 
Spatial Representation: The samples were collected at 906LPL_2003, 906LPL_2004, and 906LPL_2005. Each of these sample location names consists of a composite from three different sites.
Temporal Representation: The samples were collected in 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 Elimination System (NPDES) Permit (RWQCB-Order NO. R9-2007-0001).
QAPP Information Reference(s): e-mail clarifying QAPP information
 
Line of Evidence (LOE) for Decision ID 106176, Pyrene
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 74214
 
Pollutant: Toxicity
LOE Subgroup: Toxicity
Matrix: Sediment
Fraction: None
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 5
Number of Exceedances: 1
 
Data and Information Type: TOXICITY TESTING
Data Used to Assess Water Quality: Five samples were collected to test for toxicity. One 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: Methods for Assessing the Toxicity of Sediment-associated Contaminants with Estuarine and Marine Amphipods. June 1994. EPA 600/R-94/025
 
Spatial Representation: The samples were collected from sites 906_6228, 906_6229, 906_6230, 906_6232, 906_6236 Los Penasquitos Lagoon.
Temporal Representation: The samples were collected in July 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 106176, Pyrene
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 78258
 
Pollutant: Pyrene
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 5
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Bight data for Los Penasquitos Lagoon to determine beneficial use support and results are as follows: 0 of 5 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 Los Penasquitos Lagoon was collected at 5 monitoring sites [ 906_6228, 906_6229, 906_6230, 906_6232, 906_6236]
Temporal Representation: Data was collected on a single day 7/17/2008.
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 106176, Pyrene
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 138949
 
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 Los Penasquitos 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): B13-8176.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-01 to 2013-08-01
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 106176, Pyrene
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 138753
 
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 Los Penasquitos 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): B13-8169.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-01 to 2013-08-01
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 106176, Pyrene
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 138852
 
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 Los Penasquitos 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): B13-8176.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-01 to 2013-08-01
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 106176, Pyrene
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 139019
 
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 Los Penasquitos 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): B13-8169.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-01 to 2013-08-01
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
106177
Region 9     
Los Penasquitos 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 106177, Silver
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 78259
 
Pollutant: Silver
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 5
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Bight data for Los Penasquitos Lagoon to determine beneficial use support and results are as follows: 0 of 5 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 Los Penasquitos Lagoon was collected at 5 monitoring sites [ 906_6228, 906_6229, 906_6230, 906_6232, 906_6236]
Temporal Representation: Data was collected on a single day 7/17/2008.
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 106177, Silver
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 74213
 
Pollutant: Toxicity
LOE Subgroup: Toxicity
Matrix: Sediment
Fraction: None
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 3
Number of Exceedances: 2
 
Data and Information Type: TOXICITY TESTING
Data Used to Assess Water Quality: Three samples were collected to test for toxicity. Two 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.
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. 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: Methods for Assessing the Toxicity of Sediment-associated Contaminants with Estuarine and Marine Amphipods. June 1994. EPA 600/R-94/025
 
Spatial Representation: The samples were collected at 906LPL_2003, 906LPL_2004, and 906LPL_2005. Each of these sample location names consists of a composite from three different sites.
Temporal Representation: The samples were collected in 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 Elimination System (NPDES) Permit (RWQCB-Order NO. R9-2007-0001).
QAPP Information Reference(s): e-mail clarifying QAPP information
 
Line of Evidence (LOE) for Decision ID 106177, Silver
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 74214
 
Pollutant: Toxicity
LOE Subgroup: Toxicity
Matrix: Sediment
Fraction: None
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 5
Number of Exceedances: 1
 
Data and Information Type: TOXICITY TESTING
Data Used to Assess Water Quality: Five samples were collected to test for toxicity. One 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: Methods for Assessing the Toxicity of Sediment-associated Contaminants with Estuarine and Marine Amphipods. June 1994. EPA 600/R-94/025
 
Spatial Representation: The samples were collected from sites 906_6228, 906_6229, 906_6230, 906_6232, 906_6236 Los Penasquitos Lagoon.
Temporal Representation: The samples were collected in July 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 106177, Silver
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 139309
 
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 Los Penasquitos 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): B13-8176.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-01 to 2013-08-01
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 106177, Silver
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 139075
 
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 Los Penasquitos 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): B13-8176.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-01 to 2013-08-01
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 106177, Silver
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 139035
 
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 Los Penasquitos 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): B13-8169.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-01 to 2013-08-01
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 106177, Silver
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 139113
 
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 Los Penasquitos 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): B13-8169.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-01 to 2013-08-01
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
106179
Region 9     
Los Penasquitos 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 106179, Zinc
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 74213
 
Pollutant: Toxicity
LOE Subgroup: Toxicity
Matrix: Sediment
Fraction: None
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 3
Number of Exceedances: 2
 
Data and Information Type: TOXICITY TESTING
Data Used to Assess Water Quality: Three samples were collected to test for toxicity. Two 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.
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. 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: Methods for Assessing the Toxicity of Sediment-associated Contaminants with Estuarine and Marine Amphipods. June 1994. EPA 600/R-94/025
 
Spatial Representation: The samples were collected at 906LPL_2003, 906LPL_2004, and 906LPL_2005. Each of these sample location names consists of a composite from three different sites.
Temporal Representation: The samples were collected in 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 Elimination System (NPDES) Permit (RWQCB-Order NO. R9-2007-0001).
QAPP Information Reference(s): e-mail clarifying QAPP information
 
Line of Evidence (LOE) for Decision ID 106179, Zinc
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 74214
 
Pollutant: Toxicity
LOE Subgroup: Toxicity
Matrix: Sediment
Fraction: None
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 5
Number of Exceedances: 1
 
Data and Information Type: TOXICITY TESTING
Data Used to Assess Water Quality: Five samples were collected to test for toxicity. One 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: Methods for Assessing the Toxicity of Sediment-associated Contaminants with Estuarine and Marine Amphipods. June 1994. EPA 600/R-94/025
 
Spatial Representation: The samples were collected from sites 906_6228, 906_6229, 906_6230, 906_6232, 906_6236 Los Penasquitos Lagoon.
Temporal Representation: The samples were collected in July 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 106179, Zinc
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 78260
 
Pollutant: Zinc
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 5
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Bight data for Los Penasquitos Lagoon to determine beneficial use support and results are as follows: 0 of 5 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 Los Penasquitos Lagoon was collected at 5 monitoring sites [ 906_6228, 906_6229, 906_6230, 906_6232, 906_6236]
Temporal Representation: Data was collected on a single day 7/17/2008.
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 106179, Zinc
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 139344
 
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 Los Penasquitos 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): B13-8169.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-01 to 2013-08-01
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 106179, Zinc
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 139339
 
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 Los Penasquitos 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): B13-8176.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-01 to 2013-08-01
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 106179, Zinc
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 139428
 
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 Los Penasquitos 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): B13-8169.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-01 to 2013-08-01
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 106179, Zinc
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 139337
 
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 Los Penasquitos 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): B13-8176.
Temporal Representation: Data for this waterbody were collected over the date range 2013-08-01 to 2013-08-01
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
106173
Region 9     
Los Penasquitos Lagoon
 
Pollutant: pH
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 106173, pH
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 145559
 
Pollutant: pH
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 2
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed SWAMP RWB9 Monitoring data for Los Penasquitos Lagoon to determine beneficial use support and results are as follows: 0 of 2 samples exceeded the water quality threshold for pH.
Data Reference: Field, Habitat, Sediment, Tissue, Water data for the 2020/2022 integrated report in Region 9.
 
SWAMP Data: SWAMP
 
Water Quality Objective/Criterion: Ranges (pH) of 6.5 to 9.0 are considered harmless (Water Quality Control Plan, San Diego Basin).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (906LSPNLG)
Temporal Representation: The samples were collected between the dates of 2013-07-01 and 2013-08-06
Environmental Conditions:
QAPP Information: SWAMP QAPrP 2008, Nagoda and Busse, 2013. Quality Assurance Project Plan for Screening of Cyanotoxins in Lakes/Reservoirs and Coastal Wetlands in the San Diego Region, SWAMP QAPrP 2017
QAPP Information Reference(s): Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program
 
Line of Evidence (LOE) for Decision ID 106173, pH
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 145398
 
Pollutant: pH
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Marine Habitat
 
Number of Samples: 2
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed SWAMP RWB9 Monitoring data for Los Penasquitos Lagoon to determine beneficial use support and results are as follows: 0 of 2 samples exceeded the water quality threshold for pH.
Data Reference: Field, Habitat, Sediment, Tissue, Water data for the 2020/2022 integrated report in Region 9.
 
SWAMP Data: SWAMP
 
Water Quality Objective/Criterion: Ranges (pH) of 6.5 to 9.0 are considered harmless (Water Quality Control Plan, San Diego Basin).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected at 1 monitoring site (906LSPNLG)
Temporal Representation: The samples were collected between the dates of 2013-07-01 and 2013-08-06
Environmental Conditions:
QAPP Information: SWAMP QAPrP 2008, Nagoda and Busse, 2013. Quality Assurance Project Plan for Screening of Cyanotoxins in Lakes/Reservoirs and Coastal Wetlands in the San Diego Region, SWAMP QAPrP 2017
QAPP Information Reference(s): Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program
 
 
DECISION ID
86349
Region 9     
Los Penasquitos Lagoon
 
Pollutant: Cadmium (sediment)
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 in sediment, and pollutant concentrations in sediment must be associated with sediment toxicity to justify adding that pollutant to the CWA section 303(d) List.

Two lines of evidence are available in the administrative record to assess this pollutant. Three of eight samples (sediment toxicity) and zero of five samples (sediment) exceeded the water quality objective.

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

This conclusion is based on the staff findings that:
1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy.
2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy.
3. Three of eight samples (sediment toxicity) and zero of five samples (sediment) exceeded the water quality objective. The level of toxicity in sediments indicates that the beneficial use is not fully supported. The applicable sediment quality standard for this pollutant is not being exceeded and is insufficient to determine use support.
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 though this water body is impaired for sediment toxicity, this water body-pollutant combination should not be placed on the section 303(d) list because applicable the water or sediment quality standards for these pollutants are not being exceeded or are insufficient to determine use support.
 
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 86349, Cadmium (sediment)
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 74214
 
Pollutant: Toxicity
LOE Subgroup: Toxicity
Matrix: Sediment
Fraction: None
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 5
Number of Exceedances: 1
 
Data and Information Type: TOXICITY TESTING
Data Used to Assess Water Quality: Five samples were collected to test for toxicity. One 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: Methods for Assessing the Toxicity of Sediment-associated Contaminants with Estuarine and Marine Amphipods. June 1994. EPA 600/R-94/025
 
Spatial Representation: The samples were collected from sites 906_6228, 906_6229, 906_6230, 906_6232, 906_6236 Los Penasquitos Lagoon.
Temporal Representation: The samples were collected in July 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 86349, Cadmium (sediment)
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 74213
 
Pollutant: Toxicity
LOE Subgroup: Toxicity
Matrix: Sediment
Fraction: None
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 3
Number of Exceedances: 2
 
Data and Information Type: TOXICITY TESTING
Data Used to Assess Water Quality: Three samples were collected to test for toxicity. Two 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.
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. 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: Methods for Assessing the Toxicity of Sediment-associated Contaminants with Estuarine and Marine Amphipods. June 1994. EPA 600/R-94/025
 
Spatial Representation: The samples were collected at 906LPL_2003, 906LPL_2004, and 906LPL_2005. Each of these sample location names consists of a composite from three different sites.
Temporal Representation: The samples were collected in 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 Elimination System (NPDES) Permit (RWQCB-Order NO. R9-2007-0001).
QAPP Information Reference(s): e-mail clarifying QAPP information
 
Line of Evidence (LOE) for Decision ID 86349, Cadmium (sediment)
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 78243
 
Pollutant: Cadmium
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 5
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Bight data for Los Penasquitos Lagoon to determine beneficial use support and results are as follows: 0 of 5 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 Los Penasquitos Lagoon was collected at 5 monitoring sites [ 906_6228, 906_6229, 906_6230, 906_6232, 906_6236]
Temporal Representation: Data was collected on a single day 7/17/2008.
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
86385
Region 9     
Los Penasquitos 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 in sediment, and pollutant concentrations in sediment must be associated with sediment toxicity to justify adding that pollutant to the CWA section 303(d) List.

Two lines of evidence are available in the administrative record to assess this pollutant. Three of eight samples (sediment toxicity) and zero of five samples (sediment) exceeded the water quality objective.

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

This conclusion is based on the staff findings that:
1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy.
2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy.
3. Three of eight samples (sediment toxicity) and zero of five samples (sediment) exceeded the water quality objective. The level of toxicity in sediments indicates that the beneficial use is not fully supported. The applicable sediment quality standard for this pollutant is not being exceeded and is insufficient to determine use support.
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 though this water body is impaired for sediment toxicity, this water body-pollutant combination should not be placed on the section 303(d) list because applicable the water or sediment quality standards for these pollutants are not being exceeded or are insufficient to determine use support.
 
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 86385, Endrin
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 78249
 
Pollutant: Endrin
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 3
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Bight data for Los Penasquitos Lagoon to determine beneficial use support and results are as follows: a total of 5 samples were collected and they were all non-detect, however 2 samples were not used in analysis because when the method detection limit was organic carbon normalized, the results were above the guideline and therefore could not be quanitified with the level of certainty required by the Listing Policy.
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 Los Penasquitos Lagoon was collected at 5 monitoring sites [ 906_6228, 906_6229, 906_6230, 906_6232, 906_6236]
Temporal Representation: Data was collected on a single day 7/17/2008.
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 86385, Endrin
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 74214
 
Pollutant: Toxicity
LOE Subgroup: Toxicity
Matrix: Sediment
Fraction: None
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 5
Number of Exceedances: 1
 
Data and Information Type: TOXICITY TESTING
Data Used to Assess Water Quality: Five samples were collected to test for toxicity. One 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: Methods for Assessing the Toxicity of Sediment-associated Contaminants with Estuarine and Marine Amphipods. June 1994. EPA 600/R-94/025
 
Spatial Representation: The samples were collected from sites 906_6228, 906_6229, 906_6230, 906_6232, 906_6236 Los Penasquitos Lagoon.
Temporal Representation: The samples were collected in July 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 86385, Endrin
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 74213
 
Pollutant: Toxicity
LOE Subgroup: Toxicity
Matrix: Sediment
Fraction: None
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 3
Number of Exceedances: 2
 
Data and Information Type: TOXICITY TESTING
Data Used to Assess Water Quality: Three samples were collected to test for toxicity. Two 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.
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. 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: Methods for Assessing the Toxicity of Sediment-associated Contaminants with Estuarine and Marine Amphipods. June 1994. EPA 600/R-94/025
 
Spatial Representation: The samples were collected at 906LPL_2003, 906LPL_2004, and 906LPL_2005. Each of these sample location names consists of a composite from three different sites.
Temporal Representation: The samples were collected in 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 Elimination System (NPDES) Permit (RWQCB-Order NO. R9-2007-0001).
QAPP Information Reference(s): e-mail clarifying QAPP information
 
 
DECISION ID
86692
Region 9     
Los Penasquitos 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 3.2 of the Listing Policy. Under section 3.2, one line of evidence are necessary to assess listing status.

Five lines of evidence are available in the administrative record to assess this pollutant. With data collected in 2008, zero of five single samples exceed the water quality objective for enterococcus for the protection of REC-1, one of five single samples exceed the water quality objective for total coliform of a SSM of 230/100ml for the protection of SHELL.

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. With data collected in 2008, zero of five single samples exceed the water quality objective for enterococcus for the protection of REC-1, one of five single samples exceed the water quality objective for total coliform of a SSM of 230/100ml for the protection of SHELL 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 26 samples is needed to determine if a beneficial use is fully supported using table 3.2.
4. Pursuant to [SECTION 3.11/4.11] of the Listing Policy, no additional data and information are available indicating that standards are not met.
 
Regional Board Decision Recommendation: After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because applicable water quality standards are not being exceeded.
 
State Board Review of Regional Board Conclusion and Recommendation:
 
State Board Decision Recommendation: After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.
 
 
Line of Evidence (LOE) for Decision ID 86692, Indicator Bacteria
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 74183
 
Pollutant: Fecal Coliform
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Non-Contact Recreation
 
Number of Samples: 5
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 Los Penasquitos Lagoon to determine beneficial use support and results are as follows: 0 of 5 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 Los Penasquitos Lagoon was collected at 5 monitoring sites [ Los Penasquitos Lagoon, Los Penasquitos Lagoon, Los Penasquitos Lagoon, Los Penasquitos Lagoon, Los Penasquitos Lagoon]
Temporal Representation: Data was collected on a single day 7/17/2008.
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 86692, Indicator Bacteria
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 74184
 
Pollutant: Fecal Coliform
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Water Contact Recreation
 
Number of Samples: 5
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 Los Penasquitos Lagoon to determine beneficial use support and results are as follows: 0 of 5 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 Los Penasquitos Lagoon was collected at 5 monitoring sites [ Los Penasquitos Lagoon, Los Penasquitos Lagoon, Los Penasquitos Lagoon, Los Penasquitos Lagoon, Los Penasquitos Lagoon]
Temporal Representation: Data was collected on a single day 7/17/2008.
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 86692, Indicator Bacteria
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 74182
 
Pollutant: Enterococcus
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Water Contact Recreation
 
Number of Samples: 5
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 Los Penasquitos Lagoon to determine beneficial use support and results are as follows: 0 of 5 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 Los Penasquitos Lagoon was collected at 5 monitoring sites [ Los Penasquitos Lagoon, Los Penasquitos Lagoon, Los Penasquitos Lagoon, Los Penasquitos Lagoon, Los Penasquitos Lagoon]
Temporal Representation: Data was collected on a single day 7/17/2008.
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 86692, Indicator Bacteria
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 74212
 
Pollutant: Total Coliform
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Water Contact Recreation
 
Number of Samples: 5
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 Los Penasquitos Lagoon to determine beneficial use support and results are as follows: 0 of 5 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 Los Penasquitos Lagoon was collected at 5 monitoring sites [ Los Penasquitos Lagoon, Los Penasquitos Lagoon, Los Penasquitos Lagoon, Los Penasquitos Lagoon, Los Penasquitos Lagoon]
Temporal Representation: Data was collected on a single day 7/17/2008.
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 86692, Indicator Bacteria
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 74201
 
Pollutant: Total Coliform
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Shellfish Harvesting
 
Number of Samples: 5
Number of Exceedances: 1
 
Data and Information Type: PATHOGEN MONITORING
Data Used to Assess Water Quality: Water Board staff assessed County of San Diego data for Los Penasquitos Lagoon to determine beneficial use support and results are as follows: 1 of 5 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 where shellfish harvesting for human consumption, commercial or sports purposes is designated the total coliform concetration shall not exceed 230 per 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 Los Penasquitos Lagoon was collected at 5 monitoring sites [ Los Penasquitos Lagoon, Los Penasquitos Lagoon, Los Penasquitos Lagoon, Los Penasquitos Lagoon, Los Penasquitos Lagoon]
Temporal Representation: Data was collected on a single day 7/17/2008.
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
86415
Region 9     
Los Penasquitos 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 in sediment, and pollutant concentrations in sediment must be associated with sediment toxicity to justify adding that pollutant to the CWA section 303(d) List.

Two lines of evidence are available in the administrative record to assess this pollutant. Three of eight samples (sediment toxicity) and zero of five samples (sediment) exceeded the water quality objective.

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

This conclusion is based on the staff findings that:
1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy.
2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy.
3. Three of eight samples (sediment toxicity) and zero of five samples (sediment) exceeded the water quality objective. The level of toxicity in sediments indicates that the beneficial use is not fully supported. The applicable sediment quality standard for this pollutant is not being exceeded and is insufficient to determine use support.
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 though this water body is impaired for sediment toxicity, this water body-pollutant combination should not be placed on the section 303(d) list because applicable the water or sediment quality standards for these pollutants are not being exceeded or are insufficient to determine use support.
 
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 86415, Lindane/gamma Hexachlorocyclohexane (gamma-HCH)
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 74214
 
Pollutant: Toxicity
LOE Subgroup: Toxicity
Matrix: Sediment
Fraction: None
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 5
Number of Exceedances: 1
 
Data and Information Type: TOXICITY TESTING
Data Used to Assess Water Quality: Five samples were collected to test for toxicity. One 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: Methods for Assessing the Toxicity of Sediment-associated Contaminants with Estuarine and Marine Amphipods. June 1994. EPA 600/R-94/025
 
Spatial Representation: The samples were collected from sites 906_6228, 906_6229, 906_6230, 906_6232, 906_6236 Los Penasquitos Lagoon.
Temporal Representation: The samples were collected in July 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 86415, Lindane/gamma Hexachlorocyclohexane (gamma-HCH)
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 74213
 
Pollutant: Toxicity
LOE Subgroup: Toxicity
Matrix: Sediment
Fraction: None
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 3
Number of Exceedances: 2
 
Data and Information Type: TOXICITY TESTING
Data Used to Assess Water Quality: Three samples were collected to test for toxicity. Two 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.
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. 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: Methods for Assessing the Toxicity of Sediment-associated Contaminants with Estuarine and Marine Amphipods. June 1994. EPA 600/R-94/025
 
Spatial Representation: The samples were collected at 906LPL_2003, 906LPL_2004, and 906LPL_2005. Each of these sample location names consists of a composite from three different sites.
Temporal Representation: The samples were collected in 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 Elimination System (NPDES) Permit (RWQCB-Order NO. R9-2007-0001).
QAPP Information Reference(s): e-mail clarifying QAPP information
 
Line of Evidence (LOE) for Decision ID 86415, Lindane/gamma Hexachlorocyclohexane (gamma-HCH)
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 78251
 
Pollutant: Lindane/gamma Hexachlorocyclohexane (gamma-HCH)
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: Total
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 5
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Water Board staff assessed Bight data for Los Penasquitos Lagoon to determine beneficial use support and results are as follows: 0 of 5 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 Los Penasquitos Lagoon was collected at 5 monitoring sites [ 906_6228, 906_6229, 906_6230, 906_6232, 906_6236]
Temporal Representation: Data was collected on a single day 7/17/2008.
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
86491
Region 9     
Los Penasquitos Lagoon
 
Pollutant: Toxicity
Final Listing Decision: List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision: List on 303(d) list (TMDL required list)(2016)
Revision Status Original
Sources: A Source Unknown
Expected TMDL Completion Date: 2027
Impairment from Pollutant or Pollution: Pollutant
 
Regional Board Conclusion: This pollutant is being considered for placement on the CWA section 303(d) List under section 3.6 of the Listing Policy. Under section 3.6 at least one line of evidence is necessary to assess listing status for toxicity in sediment, and waters may be placed on the CWA section 303(d) List for toxicity alone.

Two lines of evidence are available in the administrative record to assess sediment toxicity. Three of the eight samples exhibited sediment toxicity.

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

This conclusion is based on the staff findings that:
1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy.
2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy.
3. Three of the eight samples exhibited sediment toxicity, and this exceeds the allowable frequency listed in Table 3.1 of the Listing Policy.
4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.
 
Regional Board Decision Recommendation: After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should be placed on the section 303(d) list because applicable water quality standards are exceeded and a pollutant contributes to or causes the problem.
 
State Board Review of Regional Board Conclusion and Recommendation:
 
State Board Decision Recommendation: After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.
 
 
Line of Evidence (LOE) for Decision ID 86491, Toxicity
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 74213
 
Pollutant: Toxicity
LOE Subgroup: Toxicity
Matrix: Sediment
Fraction: None
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 3
Number of Exceedances: 2
 
Data and Information Type: TOXICITY TESTING
Data Used to Assess Water Quality: Three samples were collected to test for toxicity. Two 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.
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. 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: Methods for Assessing the Toxicity of Sediment-associated Contaminants with Estuarine and Marine Amphipods. June 1994. EPA 600/R-94/025
 
Spatial Representation: The samples were collected at 906LPL_2003, 906LPL_2004, and 906LPL_2005. Each of these sample location names consists of a composite from three different sites.
Temporal Representation: The samples were collected in 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 Elimination System (NPDES) Permit (RWQCB-Order NO. R9-2007-0001).
QAPP Information Reference(s): e-mail clarifying QAPP information
 
Line of Evidence (LOE) for Decision ID 86491, Toxicity
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 74214
 
Pollutant: Toxicity
LOE Subgroup: Toxicity
Matrix: Sediment
Fraction: None
 
Beneficial Use: Estuarine Habitat
 
Number of Samples: 5
Number of Exceedances: 1
 
Data and Information Type: TOXICITY TESTING
Data Used to Assess Water Quality: Five samples were collected to test for toxicity. One 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: Methods for Assessing the Toxicity of Sediment-associated Contaminants with Estuarine and Marine Amphipods. June 1994. EPA 600/R-94/025
 
Spatial Representation: The samples were collected from sites 906_6228, 906_6229, 906_6230, 906_6232, 906_6236 Los Penasquitos Lagoon.
Temporal Representation: The samples were collected in July 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
 
 
DECISION ID
86194
Region 9     
Los Penasquitos Lagoon
 
Pollutant: Sedimentation/Siltation
Final Listing Decision: List on 303(d) list (being addressed by USEPA approved TMDL)
Last Listing Cycle's Final Listing Decision: List on 303(d) list (being addressed by USEPA approved TMDL)(2016)
Revision Status Original
Sources: A Source Unknown | Channel Erosion | Channelization | Erosion/Siltation | Flow Alteration/Regulation/Modification | Hydromodification | Illicit Connections/Illegal Hook-ups/Dry Weather Flows | Streambank Modification/Destabilization | Urban Runoff/Storm Sewers
TMDL Name: Los Penasquitos Lagoon Sedimentation
TMDL Project Code: 695
Date TMDL Approved by USEPA: 10/30/2014
Impairment from Pollutant or Pollution: Pollutant
 
Regional Board Conclusion: Region 9 data was not included in the 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: Region 9 data was not included in the 2012 Integrated Report so all decisions are carried over from the 2010 listing cycle. The Regional Board will update this decision when new data and information become available and are assessed.
 
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 86194, Sedimentation/Siltation
Region 9     
Los Penasquitos Lagoon
 
LOE ID: 4456
 
Pollutant: Sedimentation/Siltation
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):