# Draft 2008 California 303(d)/305(b) Integrated Report

# Supporting Information

## Regional Board 3 - Central Coast Region

Water Body Name: | Pacific Ocean at Port San Luis Beach (oil pier)
Water Body ID: | 3030
Water Body Type: | Coastal & Bay Shoreline

DECISION ID | 15594
Pollutant: | Chlorpyrifos
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
Weight of Evidence: | This pollutant is being considered for placement on the section 303(d) list under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status. Two lines of evidence are available in the administrative record to assess this pollutant. None of the 4 samples exceed the Evaluation Guideline (OEHHA screening value , Brodberg and Pollock 1999) applied to the consumption beneficial uses. 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 section 303(d) list in the Water Quality Limited Segments category. However, there are an insufficient number of samples to make a "use rating" decision. Central Coast Water Board staff require a minimum of 16 samples to make a "use rating" decision of Fully Supporting. 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. None of the 4 samples exceed the Evaluation Guideline (Brodberg and Pollock 1999) 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.
RWQCB Board Decision / Staff 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.
SWRCB Board Decision / Staff Recommendation: |
USEPA Decision: |

Lines of Evidence (LOEs) for Decision ID 15594

LOE ID: | 14855
Pollutant: | Chlorpyrifos
LOE Subgroup: | Pollutant-Tissue
Matrix: | Tissue
Fraction: | None
Beneficial Use: | Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples: | 4
Number of Exceedances: | 0
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed Sand Crab Tissue Monitoring (SandCrabs) data for Pacific Ocean at Port San Luis Beach (oil pier) to determine beneficial use support and results are as follows: 0 of 4 samples exceed the criterion for Chlorpyrifos.
Data Reference: | Final Data File used for assessment: SWAMP Sand Crab Tissue Data
Water Quality Objective/Criterion: | A water segment shall be placed on the section 303(d) list if the tissue pollutant levels in organisms exceed a pollutant-specific evaluation guideline (OEHHA or EPA) using the binomial distribution as described in section 3.1 (Water Quality Control Policy, SWRCB 2004)
Objective/Criterion Reference: | Water Quality Control Plan Central Coast Region (R3) Basin Plan
Evaluation Guideline: | For the protection of human health from the consumption of fish and shellfish, the OEHHA screening value for Chlorpyrifos is 10,000 ug/Kg wet weight (Brodberg and Pollock 1999)
Guideline Reference: | Prevalence of Selected Target Chemical Contaminants in Sport Fish From Two California Lakes: Public health designed screening study. Sacramento, CA: Office of Environmental Health Hazard Assessment
Spatial Representation: | Data for this line of evidence for Pacific Ocean at Port San Luis Beach (oil pier) was collected at 4 monitoring sites [ SCS02SLOH001 - Port San Luis Harbor Beach 232E of pier, SCS02SLOH002 - Port San Luis Harbor Beach 232E of pier, SCS02SLOH003 - Port San Luis Harbor Beach 10Wof pier, SCS02SLOH004 - Port San Luis Harbor Beach 10Wof pier]
Temporal Representation: | Data was collected on a single day 8/26/2002.
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data.
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are not included in data submission.
QAPP Information Reference(s):
LOE ID: | 14856
Pollutant: | Chlorpyrifos
LOE Subgroup: | Pollutant-Tissue
Matrix: | Tissue
Fraction: | None
Beneficial Use: | Shellfish Harvesting
Number of Samples: | 4
Number of Exceedances: | 0
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed Sand Crab Tissue Monitoring (SandCrabs) data for Pacific Ocean at Port San Luis Beach (oil pier) to determine beneficial use support and results are as follows: 0 of 4 samples exceed the criterion for Chlorpyrifos.
Data Reference: | Final Data File used for assessment: SWAMP Sand Crab Tissue Data
Water Quality Objective/Criterion: | OEHHA Screening value for the protection of human health from the consumption of fish and shellfish. Brodberg and Pollock calculated "California Lakes Screening Values" for a 70 kg adult human and based on a fish consumption value of 21 g/day (1999)
Objective/Criterion Reference:
Evaluation Guideline: | OEHHA Screening Value in fish and shellfish tissue for Chlorpyrifos is 10000.0 ug/Kg
Guideline Reference: | Prevalence of Selected Target Chemical Contaminants in Sport Fish From Two California Lakes: Public health designed screening study. Sacramento, CA: Office of Environmental Health Hazard Assessment
Spatial Representation: | Data for this line of evidence for Pacific Ocean at Port San Luis Beach (oil pier) was collected at 4 monitoring sites [ SCS02SLOH001 - Port San Luis Harbor Beach 232E of pier, SCS02SLOH002 - Port San Luis Harbor Beach 232E of pier, SCS02SLOH003 - Port San Luis Harbor Beach 10Wof pier, SCS02SLOH004 - Port San Luis Harbor Beach 10Wof pier]
Temporal Representation: | Data was collected on a single day 8/26/2002.
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data.
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are not included in data submission.
QAPP Information Reference(s):

DECISION ID | 15595
Pollutant: | Diazinon
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
Weight of Evidence: | This pollutant is being considered for placement on the section 303(d) list under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status. Two lines of evidence are available in the administrative record to assess this pollutant. None of the 4 samples exceed the Evaluation Guideline (OEHHA screening value , Brodberg and Pollock 1999) applied to the consumption beneficial uses. 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 section 303(d) list in the Water Quality Limited Segments category. However, there are an insufficient number of samples to make a "use rating" decision. Central Coast Water Board staff require a minimum of 16 samples to make a "use rating" decision of Fully Supporting. 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. None of the 4 samples exceed the Evaluation Guideline (Brodberg and Pollock 1999) 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.
RWQCB Board Decision / Staff 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.
SWRCB Board Decision / Staff Recommendation: |
USEPA Decision: |

Lines of Evidence (LOEs) for Decision ID 15595

LOE ID: | 14876
Pollutant: | Diazinon
LOE Subgroup: | Pollutant-Tissue
Matrix: | Tissue
Fraction: | None
Beneficial Use: | Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples: | 4
Number of Exceedances: | 0
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed Sand Crab Tissue Monitoring (SandCrabs) data for Pacific Ocean at Port San Luis Beach (oil pier) to determine beneficial use support and results are as follows: 0 of 4 samples exceed the criterion for Diazinon.
Data Reference: | Final Data File used for assessment: SWAMP Sand Crab Tissue Data
Water Quality Objective/Criterion: | A water segment shall be placed on the section 303(d) list if the tissue pollutant levels in organisms exceed a pollutant-specific evaluation guideline (OEHHA or EPA) using the binomial distribution as described in section 3.1 (Water Quality Control Policy, SWRCB 2004)
Objective/Criterion Reference: | Water Quality Control Plan Central Coast Region (R3) Basin Plan
Evaluation Guideline: | For the protection of human health from the consumption of fish and shellfish, the OEHHA screening value for Diazinon is 300 ug/Kg wet weight (Brodberg and Pollock 1999)
Guideline Reference: | Prevalence of Selected Target Chemical Contaminants in Sport Fish From Two California Lakes: Public health designed screening study. Sacramento, CA: Office of Environmental Health Hazard Assessment
Spatial Representation: | Data for this line of evidence for Pacific Ocean at Port San Luis Beach (oil pier) was collected at 4 monitoring sites [ SCS02SLOH001 - Port San Luis Harbor Beach 232E of pier, SCS02SLOH002 - Port San Luis Harbor Beach 232E of pier, SCS02SLOH003 - Port San Luis Harbor Beach 10Wof pier, SCS02SLOH004 - Port San Luis Harbor Beach 10Wof pier]
Temporal Representation: | Data was collected on a single day 8/26/2002.
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data.
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are not included in data submission.
QAPP Information Reference(s):
LOE ID: | 14877
Pollutant: | Diazinon
LOE Subgroup: | Pollutant-Tissue
Matrix: | Tissue
Fraction: | None
Beneficial Use: | Shellfish Harvesting
Number of Samples: | 4
Number of Exceedances: | 0
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed Sand Crab Tissue Monitoring (SandCrabs) data for Pacific Ocean at Port San Luis Beach (oil pier) to determine beneficial use support and results are as follows: 0 of 4 samples exceed the criterion for Diazinon.
Data Reference: | Final Data File used for assessment: SWAMP Sand Crab Tissue Data
Water Quality Objective/Criterion: | OEHHA Screening value for the protection of human health from the consumption of fish and shellfish. Brodberg and Pollock calculated "California Lakes Screening Values" for a 70 kg adult human and based on a fish consumption value of 21 g/day (1999)
Objective/Criterion Reference:
Evaluation Guideline: | OEHHA Screening Value in fish and shellfish tissue for Diazinon is 300.0 ug/Kg
Guideline Reference: | Prevalence of Selected Target Chemical Contaminants in Sport Fish From Two California Lakes: Public health designed screening study. Sacramento, CA: Office of Environmental Health Hazard Assessment
Spatial Representation: | Data for this line of evidence for Pacific Ocean at Port San Luis Beach (oil pier) was collected at 4 monitoring sites [ SCS02SLOH001 - Port San Luis Harbor Beach 232E of pier, SCS02SLOH002 - Port San Luis Harbor Beach 232E of pier, SCS02SLOH003 - Port San Luis Harbor Beach 10Wof pier, SCS02SLOH004 - Port San Luis Harbor Beach 10Wof pier]
Temporal Representation: | Data was collected on a single day 8/26/2002.
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data.
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are not included in data submission.
QAPP Information Reference(s):

DECISION ID | 15596
Pollutant: | Dieldrin
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
Weight of Evidence: | This pollutant is being considered for placement on the section 303(d) list under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status. Two lines of evidence are available in the administrative record to assess this pollutant. None of the 4 samples exceed the Evaluation Guideline (OEHHA screening value , Brodberg and Pollock 1999) applied to the consumption beneficial uses. 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 section 303(d) list in the Water Quality Limited Segments category. However, there are an insufficient number of samples to make a "use rating" decision. Central Coast Water Board staff require a minimum of 16 samples to make a "use rating" decision of Fully Supporting. 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. None of the 4 samples exceed the Evaluation Guideline (Brodberg and Pollock 1999) 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.
RWQCB Board Decision / Staff 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.
SWRCB Board Decision / Staff Recommendation: |
USEPA Decision: |

Lines of Evidence (LOEs) for Decision ID 15596

LOE ID: | 14897
Pollutant: | Dieldrin
LOE Subgroup: | Pollutant-Tissue
Matrix: | Tissue
Fraction: | None
Beneficial Use: | Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples: | 4
Number of Exceedances: | 0
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed Sand Crab Tissue Monitoring (SandCrabs) data for Pacific Ocean at Port San Luis Beach (oil pier) to determine beneficial use support and results are as follows: 0 of 4 samples exceed the criterion for Dieldrin.
Data Reference: | Final Data File used for assessment: SWAMP Sand Crab Tissue Data
Water Quality Objective/Criterion: | A water segment shall be placed on the section 303(d) list if the tissue pollutant levels in organisms exceed a pollutant-specific evaluation guideline (OEHHA or EPA) using the binomial distribution as described in section 3.1 (Water Quality Control Policy, SWRCB 2004)
Objective/Criterion Reference: | Water Quality Control Plan Central Coast Region (R3) Basin Plan
Evaluation Guideline: | For the protection of human health from the consumption of fish and shellfish, the OEHHA screening value for Dieldrin is 2.0 ug/Kg wet weight (Brodberg and Pollock 1999)
Guideline Reference: | Prevalence of Selected Target Chemical Contaminants in Sport Fish From Two California Lakes: Public health designed screening study. Sacramento, CA: Office of Environmental Health Hazard Assessment
Spatial Representation: | Data for this line of evidence for Pacific Ocean at Port San Luis Beach (oil pier) was collected at 4 monitoring sites [ SCS02SLOH001 - Port San Luis Harbor Beach 232E of pier, SCS02SLOH002 - Port San Luis Harbor Beach 232E of pier, SCS02SLOH003 - Port San Luis Harbor Beach 10Wof pier, SCS02SLOH004 - Port San Luis Harbor Beach 10Wof pier]
Temporal Representation: | Data was collected on a single day 8/26/2002.
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data.
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are not included in data submission.
QAPP Information Reference(s):
LOE ID: | 14913
Pollutant: | Dieldrin
LOE Subgroup: | Pollutant-Tissue
Matrix: | Tissue
Fraction: | None
Beneficial Use: | Shellfish Harvesting
Number of Samples: | 4
Number of Exceedances: | 0
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed Sand Crab Tissue Monitoring (SandCrabs) data for Pacific Ocean at Port San Luis Beach (oil pier) to determine beneficial use support and results are as follows: 0 of 4 samples exceed the criterion for Dieldrin.
Data Reference: | Final Data File used for assessment: SWAMP Sand Crab Tissue Data
Water Quality Objective/Criterion: | OEHHA Screening value for the protection of human health from the consumption of fish and shellfish. Brodberg and Pollock calculated "California Lakes Screening Values" for a 70 kg adult human and based on a fish consumption value of 21 g/day (1999)
Objective/Criterion Reference:
Evaluation Guideline: | OEHHA Screening Value in fish and shellfish tissue for Dieldrin is 2.0 ug/Kg
Guideline Reference: | Prevalence of Selected Target Chemical Contaminants in Sport Fish From Two California Lakes: Public health designed screening study. Sacramento, CA: Office of Environmental Health Hazard Assessment
Spatial Representation: | Data for this line of evidence for Pacific Ocean at Port San Luis Beach (oil pier) was collected at 4 monitoring sites [ SCS02SLOH001 - Port San Luis Harbor Beach 232E of pier, SCS02SLOH002 - Port San Luis Harbor Beach 232E of pier, SCS02SLOH003 - Port San Luis Harbor Beach 10Wof pier, SCS02SLOH004 - Port San Luis Harbor Beach 10Wof pier]
Temporal Representation: | Data was collected on a single day 8/26/2002.
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data.
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are not included in data submission.
QAPP Information Reference(s):

DECISION ID | 15597
Pollutant: | Endosulfan
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
Weight of Evidence: | This pollutant is being considered for placement on the section 303(d) list under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status. One lines of evidence are available in the administrative record to assess this pollutant. None of the 4 samples exceed the Evaluation Guideline (OEHHA screening value , Brodberg and Pollock 1999) applied to the consumption beneficial uses. 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 section 303(d) list in the Water Quality Limited Segments category. However, there are an insufficient number of samples to make a "use rating" decision. Central Coast Water Board staff require a minimum of 16 samples to make a "use rating" decision of Fully Supporting. 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. None of the 4 samples exceed the Evaluation Guideline (Brodberg and Pollock 1999) 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.
RWQCB Board Decision / Staff 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.
SWRCB Board Decision / Staff Recommendation: |
USEPA Decision: |

Lines of Evidence (LOEs) for Decision ID 15597

LOE ID: | 14917
Pollutant: | Endosulfan
LOE Subgroup: | Pollutant-Tissue
Matrix: | Tissue
Fraction: | None
Beneficial Use: | Shellfish Harvesting
Number of Samples: | 4
Number of Exceedances: | 0
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed Sand Crab Tissue Monitoring (SandCrabs) data for Pacific Ocean at Port San Luis Beach (oil pier) to determine beneficial use support and results are as follows: 0 of 4 samples exceed the criterion for Endosulfan I.
Data Reference: | Final Data File used for assessment: SWAMP Sand Crab Tissue Data
Water Quality Objective/Criterion: | OEHHA Screening value for the protection of human health from the consumption of fish and shellfish. Brodberg and Pollock calculated "California Lakes Screening Values" for a 70 kg adult human and based on a fish consumption value of 21 g/day (1999)
Objective/Criterion Reference:
Evaluation Guideline: | OEHHA Screening Value in fish and shellfish tissue for Endoculfan is 20000.0 ug/Kg
Guideline Reference: | Prevalence of Selected Target Chemical Contaminants in Sport Fish From Two California Lakes: Public health designed screening study. Sacramento, CA: Office of Environmental Health Hazard Assessment
Spatial Representation: | Data for this line of evidence for Pacific Ocean at Port San Luis Beach (oil pier) was collected at 4 monitoring sites [ SCS02SLOH001 - Port San Luis Harbor Beach 232E of pier, SCS02SLOH002 - Port San Luis Harbor Beach 232E of pier, SCS02SLOH003 - Port San Luis Harbor Beach 10Wof pier, SCS02SLOH004 - Port San Luis Harbor Beach 10Wof pier]
Temporal Representation: | Data was collected on a single day 8/26/2002.
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data.
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are not included in data submission.
QAPP Information Reference(s):

DECISION ID | 15598
Pollutant: | Endrin
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
Weight of Evidence: | This pollutant is being considered for placement on the section 303(d) list under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status. Two lines of evidence are available in the administrative record to assess this pollutant. None of the 4 samples exceed the Evaluation Guideline (OEHHA screening value , Brodberg and Pollock 1999) applied to the consumption beneficial uses. 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 section 303(d) list in the Water Quality Limited Segments category. However, there are an insufficient number of samples to make a "use rating" decision. Central Coast Water Board staff require a minimum of 16 samples to make a "use rating" decision of Fully Supporting. 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. None of the 4 samples exceed the Evaluation Guideline (Brodberg and Pollock 1999) 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.
RWQCB Board Decision / Staff 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.
SWRCB Board Decision / Staff Recommendation: |
USEPA Decision: |

Lines of Evidence (LOEs) for Decision ID 15598

LOE ID: | 14937
Pollutant: | Endrin
LOE Subgroup: | Pollutant-Tissue
Matrix: | Tissue
Fraction: | None
Beneficial Use: | Shellfish Harvesting
Number of Samples: | 4
Number of Exceedances: | 0
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed Sand Crab Tissue Monitoring (SandCrabs) data for Pacific Ocean at Port San Luis Beach (oil pier) to determine beneficial use support and results are as follows: 0 of 4 samples exceed the criterion for Endrin.
Data Reference: | Final Data File used for assessment: SWAMP Sand Crab Tissue Data
Water Quality Objective/Criterion: | OEHHA Screening value for the protection of human health from the consumption of fish and shellfish. Brodberg and Pollock calculated "California Lakes Screening Values" for a 70 kg adult human and based on a fish consumption value of 21 g/day (1999)
Objective/Criterion Reference:
Evaluation Guideline: | OEHHA Screening Value in fish and shellfish tissue for Endrin is 1000.0 ug/Kg
Guideline Reference: | Prevalence of Selected Target Chemical Contaminants in Sport Fish From Two California Lakes: Public health designed screening study. Sacramento, CA: Office of Environmental Health Hazard Assessment
Spatial Representation: | Data for this line of evidence for Pacific Ocean at Port San Luis Beach (oil pier) was collected at 4 monitoring sites [ SCS02SLOH001 - Port San Luis Harbor Beach 232E of pier, SCS02SLOH002 - Port San Luis Harbor Beach 232E of pier, SCS02SLOH003 - Port San Luis Harbor Beach 10Wof pier, SCS02SLOH004 - Port San Luis Harbor Beach 10Wof pier]
Temporal Representation: | Data was collected on a single day 8/26/2002.
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data.
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are not included in data submission.
QAPP Information Reference(s):
LOE ID: | 14936
Pollutant: | Endrin
LOE Subgroup: | Pollutant-Tissue
Matrix: | Tissue
Fraction: | None
Beneficial Use: | Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples: | 4
Number of Exceedances: | 0
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed Sand Crab Tissue Monitoring (SandCrabs) data for Pacific Ocean at Port San Luis Beach (oil pier) to determine beneficial use support and results are as follows: 0 of 4 samples exceed the criterion for Endrin.
Data Reference: | Final Data File used for assessment: SWAMP Sand Crab Tissue Data
Water Quality Objective/Criterion: | A water segment shall be placed on the section 303(d) list if the tissue pollutant levels in organisms exceed a pollutant-specific evaluation guideline (OEHHA or EPA) using the binomial distribution as described in section 3.1 (Water Quality Control Policy, SWRCB 2004)
Objective/Criterion Reference: | Water Quality Control Policy For Developing California's Clean Water Act Section 303(d) List. Sacramento, CA: State Water Resources Control Board, California Environmental Protection Agency.
Evaluation Guideline: | For the protection of human health from the consumption of fish and shellfish, the OEHHA screening value for Endrin is 1,000 ug/Kg wet weight (Brodberg and Pollock 1999)
Guideline Reference: | Prevalence of Selected Target Chemical Contaminants in Sport Fish From Two California Lakes: Public health designed screening study. Sacramento, CA: Office of Environmental Health Hazard Assessment
Spatial Representation: | Data for this line of evidence for Pacific Ocean at Port San Luis Beach (oil pier) was collected at 4 monitoring sites [ SCS02SLOH001 - Port San Luis Harbor Beach 232E of pier, SCS02SLOH002 - Port San Luis Harbor Beach 232E of pier, SCS02SLOH003 - Port San Luis Harbor Beach 10Wof pier, SCS02SLOH004 - Port San Luis Harbor Beach 10Wof pier]
Temporal Representation: | Data was collected on a single day 8/26/2002.
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data.
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are not included in data submission.
QAPP Information Reference(s):

DECISION ID | 15599
Pollutant: | Heptachlor epoxide
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
Weight of Evidence: | This pollutant is being considered for placement on the section 303(d) list under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status. Two lines of evidence are available in the administrative record to assess this pollutant. None of the 4 samples exceed the Evaluation Guideline (OEHHA screening value , Brodberg and Pollock 1999) applied to the consumption beneficial uses. 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 section 303(d) list in the Water Quality Limited Segments category. However, there are an insufficient number of samples to make a "use rating" decision. Central Coast Water Board staff require a minimum of 16 samples to make a "use rating" decision of Fully Supporting. 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. None of the 4 samples exceed the Evaluation Guideline (Brodberg and Pollock 1999) 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.
RWQCB Board Decision / Staff 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.
SWRCB Board Decision / Staff Recommendation: |
USEPA Decision: |

Lines of Evidence (LOEs) for Decision ID 15599

LOE ID: | 14957
Pollutant: | Heptachlor epoxide
LOE Subgroup: | Pollutant-Tissue
Matrix: | Tissue
Fraction: | None
Beneficial Use: | Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples: | 4
Number of Exceedances: | 0
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed Sand Crab Tissue Monitoring (SandCrabs) data for Pacific Ocean at Port San Luis Beach (oil pier) to determine beneficial use support and results are as follows: 0 of 4 samples exceed the criterion for Heptachlor epoxide.
Data Reference: | Final Data File used for assessment: SWAMP Sand Crab Tissue Data
Water Quality Objective/Criterion: | A water segment shall be placed on the section 303(d) list if the tissue pollutant levels in organisms exceed a pollutant-specific evaluation guideline (OEHHA or EPA) using the binomial distribution as described in section 3.1 (Water Quality Control Policy, SWRCB 2004)
Objective/Criterion Reference: | Water Quality Control Plan Central Coast Region (R3) Basin Plan
Evaluation Guideline: | For the protection of human health from the consumption of fish and shellfish, the OEHHA screening value for Total Heptachlor Epoxide is 4.0 ug/Kg wet weight (Brodberg and Pollock 1999)
Guideline Reference: | Prevalence of Selected Target Chemical Contaminants in Sport Fish From Two California Lakes: Public health designed screening study. Sacramento, CA: Office of Environmental Health Hazard Assessment
Spatial Representation: | Data for this line of evidence for Pacific Ocean at Port San Luis Beach (oil pier) was collected at 4 monitoring sites [ SCS02SLOH001 - Port San Luis Harbor Beach 232E of pier, SCS02SLOH002 - Port San Luis Harbor Beach 232E of pier, SCS02SLOH003 - Port San Luis Harbor Beach 10Wof pier, SCS02SLOH004 - Port San Luis Harbor Beach 10Wof pier]
Temporal Representation: | Data was collected on a single day 8/26/2002.
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data.
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are not included in data submission.
QAPP Information Reference(s):
LOE ID: | 14972
Pollutant: | Heptachlor epoxide
LOE Subgroup: | Pollutant-Tissue
Matrix: | Tissue
Fraction: | None
Beneficial Use: | Shellfish Harvesting
Number of Samples: | 4
Number of Exceedances: | 0
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed Sand Crab Tissue Monitoring (SandCrabs) data for Pacific Ocean at Port San Luis Beach (oil pier) to determine beneficial use support and results are as follows: 0 of 4 samples exceed the criterion for Heptachlor epoxide.
Data Reference: | Final Data File used for assessment: SWAMP Sand Crab Tissue Data
Water Quality Objective/Criterion: | OEHHA Screening value for the protection of human health from the consumption of fish and shellfish. Brodberg and Pollock calculated "California Lakes Screening Values" for a 70 kg adult human and based on a fish consumption value of 21 g/day (1999)
Objective/Criterion Reference:
Evaluation Guideline: | OEHHA Screening Value in fish and shellfish tissue for Heptachlor Epoxide is 4.0 ug/Kg
Guideline Reference: | Prevalence of Selected Target Chemical Contaminants in Sport Fish From Two California Lakes: Public health designed screening study. Sacramento, CA: Office of Environmental Health Hazard Assessment
Spatial Representation: | Data for this line of evidence for Pacific Ocean at Port San Luis Beach (oil pier) was collected at 4 monitoring sites [ SCS02SLOH001 - Port San Luis Harbor Beach 232E of pier, SCS02SLOH002 - Port San Luis Harbor Beach 232E of pier, SCS02SLOH003 - Port San Luis Harbor Beach 10Wof pier, SCS02SLOH004 - Port San Luis Harbor Beach 10Wof pier]
Temporal Representation: | Data was collected on a single day 8/26/2002.
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data.
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are not included in data submission.
QAPP Information Reference(s):

DECISION ID | 15600
Pollutant: | Hexachlorobenzene/ HCB
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
Weight of Evidence: | This pollutant is being considered for placement on the section 303(d) list under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status. Two lines of evidence are available in the administrative record to assess this pollutant. None of the 4 samples exceed the Evaluation Guideline (OEHHA screening value , Brodberg and Pollock 1999) applied to the consumption beneficial uses. 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 section 303(d) list in the Water Quality Limited Segments category. However, there are an insufficient number of samples to make a "use rating" decision. Central Coast Water Board staff require a minimum of 16 samples to make a "use rating" decision of Fully Supporting. 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. None of the 4 samples exceed the Evaluation Guideline (Brodberg and Pollock 1999) 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.
RWQCB Board Decision / Staff 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.
SWRCB Board Decision / Staff Recommendation: |
USEPA Decision: |

Lines of Evidence (LOEs) for Decision ID 15600

LOE ID: | 14992
Pollutant: | Hexachlorobenzene/ HCB
LOE Subgroup: | Pollutant-Tissue
Matrix: | Tissue
Fraction: | None
Beneficial Use: | Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples: | 4
Number of Exceedances: | 0
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed Sand Crab Tissue Monitoring (SandCrabs) data for Pacific Ocean at Port San Luis Beach (oil pier) to determine beneficial use support and results are as follows: 0 of 4 samples exceed the criterion for Hexachlorobenzene.
Data Reference: | Final Data File used for assessment: SWAMP Sand Crab Tissue Data
Water Quality Objective/Criterion: | A water segment shall be placed on the section 303(d) list if the tissue pollutant levels in organisms exceed a pollutant-specific evaluation guideline (OEHHA or EPA) using the binomial distribution as described in section 3.1 (Water Quality Control Policy, SWRCB 2004)
Objective/Criterion Reference: | Water Quality Control Plan Central Coast Region (R3) Basin Plan
Evaluation Guideline: | For the protection of human health from the consumption of fish and shellfish, the OEHHA screening value for Total Hexachlorobenzene is 20 ug/Kg wet weight (Brodberg and Pollock 1999)
Guideline Reference: | Prevalence of Selected Target Chemical Contaminants in Sport Fish From Two California Lakes: Public health designed screening study. Sacramento, CA: Office of Environmental Health Hazard Assessment
Spatial Representation: | Data for this line of evidence for Pacific Ocean at Port San Luis Beach (oil pier) was collected at 4 monitoring sites [ SCS02SLOH001 - Port San Luis Harbor Beach 232E of pier, SCS02SLOH002 - Port San Luis Harbor Beach 232E of pier, SCS02SLOH003 - Port San Luis Harbor Beach 10Wof pier, SCS02SLOH004 - Port San Luis Harbor Beach 10Wof pier]
Temporal Representation: | Data was collected on a single day 8/26/2002.
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data.
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are not included in data submission.
QAPP Information Reference(s):
LOE ID: | 14993
Pollutant: | Hexachlorobenzene/ HCB
LOE Subgroup: | Pollutant-Tissue
Matrix: | Tissue
Fraction: | None
Beneficial Use: | Shellfish Harvesting
Number of Samples: | 4
Number of Exceedances: | 0
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed Sand Crab Tissue Monitoring (SandCrabs) data for Pacific Ocean at Port San Luis Beach (oil pier) to determine beneficial use support and results are as follows: 0 of 4 samples exceed the criterion for Hexachlorobenzene.
Data Reference: | Final Data File used for assessment: SWAMP Sand Crab Tissue Data
Water Quality Objective/Criterion: | OEHHA Screening value for the protection of human health from the consumption of fish and shellfish. Brodberg and Pollock calculated "California Lakes Screening Values" for a 70 kg adult human and based on a fish consumption value of 21 g/day (1999)
Objective/Criterion Reference:
Evaluation Guideline: | OEHHA Screening Value in fish and shellfish tissue for Hexachlorobenzene is 20.0 ug/Kg
Guideline Reference: | Prevalence of Selected Target Chemical Contaminants in Sport Fish From Two California Lakes: Public health designed screening study. Sacramento, CA: Office of Environmental Health Hazard Assessment
Spatial Representation: | Data for this line of evidence for Pacific Ocean at Port San Luis Beach (oil pier) was collected at 4 monitoring sites [ SCS02SLOH001 - Port San Luis Harbor Beach 232E of pier, SCS02SLOH002 - Port San Luis Harbor Beach 232E of pier, SCS02SLOH003 - Port San Luis Harbor Beach 10Wof pier, SCS02SLOH004 - Port San Luis Harbor Beach 10Wof pier]
Temporal Representation: | Data was collected on a single day 8/26/2002.
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data.
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are not included in data submission.
QAPP Information Reference(s):

DECISION ID | 15601
Pollutant: | Mirex
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
Weight of Evidence: | This pollutant is being considered for placement on the section 303(d) list under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status. Two lines of evidence are available in the administrative record to assess this pollutant. None of the 4 samples exceed the Evaluation Guideline (USEPA 2000) applied to the consumption beneficial uses. 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 section 303(d) list in the Water Quality Limited Segments category. However, there are an insufficient number of samples to make a "use rating" decision. Central Coast Water Board staff require a minimum of 16 samples to make a "use rating" decision of Fully Supporting. 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. None of the 4 samples exceed the Evaluation Guideline (USEPA 2000) 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.
RWQCB Board Decision / Staff 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.
SWRCB Board Decision / Staff Recommendation: |
USEPA Decision: |

Lines of Evidence (LOEs) for Decision ID 15601

LOE ID: | 15012
Pollutant: | Mirex
LOE Subgroup: | Pollutant-Tissue
Matrix: | Tissue
Fraction: | None
Beneficial Use: | Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples: | 4
Number of Exceedances: | 0
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed Sand Crab Tissue Monitoring (SandCrabs) data for Pacific Ocean at Port San Luis Beach (oil pier) to determine beneficial use support and results are as follows: 0 of 4 samples exceed the criterion for Mirex.
Data Reference: | Final Data File used for assessment: SWAMP Sand Crab Tissue Data
Water Quality Objective/Criterion: | A water segment shall be placed on the section 303(d) list if the tissue pollutant levels in organisms exceed a pollutant-specific evaluation guideline (OEHHA or EPA) using the binomial distribution as described in section 3.1 (Water Quality Control Policy, SWRCB 2004)
Objective/Criterion Reference: | Water Quality Control Policy For Developing California's Clean Water Act Section 303(d) List. Sacramento, CA: State Water Resources Control Board, California Environmental Protection Agency.
Evaluation Guideline: | For the protection of human health from the consumption of fish and shellfish, the EPA screening value for Mirex is 800 ug/Kg wet weight (USEPA 2000)
Guideline Reference: | Guidance for assessing chemical contaminant data for use in fish advisories. Vol. 1: Fish sampling and analysis. Third Edition. EPA823-B-00-007. Washington, D.C.: Office of Water, USEPA
Spatial Representation: | Data for this line of evidence for Pacific Ocean at Port San Luis Beach (oil pier) was collected at 4 monitoring sites [ SCS02SLOH001 - Port San Luis Harbor Beach 232E of pier, SCS02SLOH002 - Port San Luis Harbor Beach 232E of pier, SCS02SLOH003 - Port San Luis Harbor Beach 10Wof pier, SCS02SLOH004 - Port San Luis Harbor Beach 10Wof pier]
Temporal Representation: | Data was collected on a single day 8/26/2002.
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data.
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are not included in data submission.
QAPP Information Reference(s):
LOE ID: | 15013
Pollutant: | Mirex
LOE Subgroup: | Pollutant-Tissue
Matrix: | Tissue
Fraction: | None
Beneficial Use: | Shellfish Harvesting
Number of Samples: | 4
Number of Exceedances: | 0
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed Sand Crab Tissue Monitoring (SandCrabs) data for Pacific Ocean at Port San Luis Beach (oil pier) to determine beneficial use support and results are as follows: 0 of 4 samples exceed the criterion for Mirex.
Data Reference: | Final Data File used for assessment: SWAMP Sand Crab Tissue Data
Water Quality Objective/Criterion: | USEPA Recommended Screening Values for target analytes - recreational fishers (Table 5-3 in USEPA 2000 (page 5-11)).
Objective/Criterion Reference:
Evaluation Guideline: | USEPA Screening Value in fish and shellfish tissue for Mirex is 800.0 ug/Kg
Guideline Reference: | Guidance for assessing chemical contaminant data for use in fish advisories. Vol. 1: Fish sampling and analysis. Third Edition. EPA823-B-00-007. Washington, D.C.: Office of Water, USEPA
Spatial Representation: | Data for this line of evidence for Pacific Ocean at Port San Luis Beach (oil pier) was collected at 4 monitoring sites [ SCS02SLOH001 - Port San Luis Harbor Beach 232E of pier, SCS02SLOH002 - Port San Luis Harbor Beach 232E of pier, SCS02SLOH003 - Port San Luis Harbor Beach 10Wof pier, SCS02SLOH004 - Port San Luis Harbor Beach 10Wof pier]
Temporal Representation: | Data was collected on a single day 8/26/2002.
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data.
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are not included in data submission.
QAPP Information Reference(s):

DECISION ID | 15602
Pollutant: | Toxaphene
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
Weight of Evidence: | This pollutant is being considered for placement on the section 303(d) list under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status. Two lines of evidence are available in the administrative record to assess this pollutant. None of the 4 samples exceed the Evaluation Guideline (OEHHA screening value , Brodberg and Pollock 1999) applied to the consumption beneficial uses. 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 section 303(d) list in the Water Quality Limited Segments category. However, there are an insufficient number of samples to make a "use rating" decision. Central Coast Water Board staff require a minimum of 16 samples to make a "use rating" decision of Fully Supporting. 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. None of the 4 samples exceed the Evaluation Guideline (Brodberg and Pollock 1999) 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.
RWQCB Board Decision / Staff 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.
SWRCB Board Decision / Staff Recommendation: |
USEPA Decision: |

Lines of Evidence (LOEs) for Decision ID 15602

LOE ID: | 15797
Pollutant: | Toxaphene
LOE Subgroup: | Pollutant-Tissue
Matrix: | Tissue
Fraction: | None
Beneficial Use: | Shellfish Harvesting
Number of Samples: | 4
Number of Exceedances: | 0
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed Sand Crab Tissue Monitoring (SandCrabs) data for Pacific Ocean at Port San Luis Beach (oil pier) to determine beneficial use support and results are as follows: 0 of 4 samples exceed the criterion for Toxaphene.
Data Reference: | Final Data File used for assessment: SWAMP Sand Crab Tissue Data
Water Quality Objective/Criterion: | OEHHA Screening value for the protection of human health from the consumption of fish and shellfish. Brodberg and Pollock calculated "California Lakes Screening Values" for a 70 kg adult human and based on a fish consumption value of 21 g/day (1999)
Objective/Criterion Reference:
Evaluation Guideline: | OEHHA Screening Value in fish and shellfish tissue for Toxaphene is 30.0 ug/Kg
Guideline Reference: | Prevalence of Selected Target Chemical Contaminants in Sport Fish From Two California Lakes: Public health designed screening study. Sacramento, CA: Office of Environmental Health Hazard Assessment
Spatial Representation: | Data for this line of evidence for Pacific Ocean at Port San Luis Beach (oil pier) was collected at 4 monitoring sites [ SCS02SLOH001 - Port San Luis Harbor Beach 232E of pier, SCS02SLOH002 - Port San Luis Harbor Beach 232E of pier, SCS02SLOH003 - Port San Luis Harbor Beach 10Wof pier, SCS02SLOH004 - Port San Luis Harbor Beach 10Wof pier]
Temporal Representation: | Data was collected on a single day 8/26/2002.
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data.
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are not included in data submission.
QAPP Information Reference(s):
LOE ID: | 15796
Pollutant: | Toxaphene
LOE Subgroup: | Pollutant-Tissue
Matrix: | Tissue
Fraction: | None
Beneficial Use: | Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples: | 4
Number of Exceedances: | 0
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed Sand Crab Tissue Monitoring (SandCrabs) data for Pacific Ocean at Port San Luis Beach (oil pier) to determine beneficial use support and results are as follows: 0 of 4 samples exceed the criterion for Toxaphene.
Data Reference: | Final Data File used for assessment: SWAMP Sand Crab Tissue Data
Water Quality Objective/Criterion: | A water segment shall be placed on the section 303(d) list if the tissue pollutant levels in organisms exceed a pollutant-specific evaluation guideline (OEHHA or EPA) using the binomial distribution as described in section 3.1 (Water Quality Control Policy, SWRCB 2004)
Objective/Criterion Reference:
Evaluation Guideline: | For the protection of human health from the consumption of fish and shellfish, the OEHHA screening value for total Toxaphene is 30 ug/Kg wet weight (Brodberg and Pollock 1999)
Guideline Reference: | Prevalence of Selected Target Chemical Contaminants in Sport Fish From Two California Lakes: Public health designed screening study. Sacramento, CA: Office of Environmental Health Hazard Assessment
Spatial Representation: | Data for this line of evidence for Pacific Ocean at Port San Luis Beach (oil pier) was collected at 4 monitoring sites [ SCS02SLOH001 - Port San Luis Harbor Beach 232E of pier, SCS02SLOH002 - Port San Luis Harbor Beach 232E of pier, SCS02SLOH003 - Port San Luis Harbor Beach 10Wof pier, SCS02SLOH004 - Port San Luis Harbor Beach 10Wof pier]
Temporal Representation: | Data was collected on a single day 8/26/2002.
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data.
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are not included in data submission.
QAPP Information Reference(s):