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

Supporting Information

Regional Board 9 - San Diego Region

Water Body Name: San Diego Bay
Water Body ID: CAB9101000019990210132422
Water Body Type: Bay & Harbor
 
DECISION ID
4995
 
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)(2006)
Revision Status Original
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 line of evidence is available in the administrative record to assess this pollutant. None of the samples exceed 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 section 303(d) list in the Water Quality Limited Segments category.

This conclusion is based on the staff findings that:
1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy.
2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy.
3. None of the 3 samples exceeded the 3.1 ppb CTR chronic saltwater criteria 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: No new data were assessed for 2008. The decision has not changed.
 
SWRCB Board Decision / Staff Recommendation: After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because applicable water quality standards for the pollutant are not exceeded.
 
USEPA Decision:
 
 
Lines of Evidence (LOEs) for Decision ID 4995
 
LOE ID: 335
 
Pollutant: Copper
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Dissolved
 
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: Data were collected by the RWQCB in 03/20/2004. None of the 3 samples were in exceedance of either the acute or chronic criteria.

All 3 samples collected on 03/15/2004 in the ocean channel near ballast point in the middle of the channel between buoys 11 and 12 met both acute and chronic standards. One sample was collected at the same location on 03/20/2004. Both acute and chronic standards were met. (SDRWQCB, 2004c)
Data Reference: Placeholder reference 2006 303(d)
 
Water Quality Objective/Criterion: From the CTR: The dissolved copper acute saltwater criterion is 4.8 ppb. The dissolved copper chronic criterion is 3.1 ppb. This criteria is more stringent or as stringent as the other criteria found.
Objective/Criterion Reference: Placeholder reference 2006 303(d)
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: Samples were collected at the San Diego Bay in the open ocean south of buoy 3 and tip of Point Loma.

Samples were also collected in the San Diego Bay in the ocean channel near ballast point in the middle of the channel between buoys 11 and 12.
Temporal Representation: Samples were collected on 03/20/2004 and 03/15/2004.
Environmental Conditions:
QAPP Information: QA Info Missing
QAPP Information Reference(s):
 
DECISION ID
5334
 
Pollutant: PCBs (Polychlorinated biphenyls)
Final Listing Decision: List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision: List on 303(d) list (TMDL required list)(2006)
Revision Status Original
Sources: Source Unknown
Expected TMDL Completion Date: 2019
Impairment from Pollutant or Pollution: Pollutant
 
Weight of Evidence: This pollutant is being considered for placement on the section 303(d) list under section 3.5 of the Listing Policy. One line of evidence is available in the administrative record to assess this pollutant.

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

This conclusion is based on the staff findings that:
1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy.
2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy.
3. All 18 samples exceeded the OEHHA Screening Value 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.
 
RWQCB Board Decision / Staff Recommendation: No new data were assessed for 2008. The decision has not changed.
 
SWRCB Board Decision / Staff Recommendation: After review of the available data and information, SWRCB 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.
 
USEPA Decision:
 
 
Lines of Evidence (LOEs) for Decision ID 5334
 
LOE ID: 336
 
Pollutant: PCBs (Polychlorinated biphenyls)
LOE Subgroup: Pollutant-Tissue
Matrix: Tissue
Fraction: Total
 
Beneficial Use: Commercial or recreational collection of fish, shellfish, or organisms
 
Number of Samples: 18
Number of Exceedances: 18
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Eleven out of 11 samples exceeded the screening value. All 11 samples were filet composites. Six out of the 11 samples were spotted sand bass collected at least once at each station. The remaining species included barred sand bass, black surfperch, diamond turbot, and shiner surfperch. All samples exceeded guideline (TSMP, 2002). Seven out of 7 samples exceeded. Whole fish/Halibut. Bight 98 Data (City of San Diego, 2003).
Data Reference: Placeholder reference 2006 303(d)
 
Water Quality Objective/Criterion: San Diego RWQCB Basin Plan: No individual pesticide or combination of pesticides shall be present in the water column, sediments or biota that adversely affect beneficial uses. Pesticides shall not be present at levels which will bioaccumulate in aquatic organisms to levels which are harmful to human health, wildlife or aquatic organisms.
Objective/Criterion Reference: Placeholder reference 2006 303(d)
 
Evaluation Guideline: 20 ng/g OEHHA Screening Value (Brodberg & Pollock, 1999).
Guideline Reference: Placeholder reference 2006 303(d)
 
Spatial Representation: Four stations were sampled: 5th Avenue Marina Pier, Coronado Pier, J Street Pier - Chula Vista, and Shelter Island Pier.
Temporal Representation: Samples were collected in February, March, April, May, November 1999 and March 2000.
Environmental Conditions:
QAPP Information: CFCP 1998 Year 1 QA Summary: Pesticides and PCBs. California Department of Fish and Game.

CDFG Fish and Wildlife Water Pollution Control Laboratory Data Quality Assurance Report. 1999 Coastal Fish Contamination Program (CFCP Year 2). California Department of Fish and Game.
QAPP Information Reference(s):