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

Supporting Information

Regional Board 9 - San Diego Region

Water Body Name: Oceanside Harbor
Water Body ID: CAB9021100019991117130531
Water Body Type: Bay & Harbor
 
DECISION ID
16614
 
Pollutant: Toxicity
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 3.6 of the Listing Policy. Under section 3.6 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 two samples exceed the Basin Plan water quality objective for toxicity.

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 two samples exceed the water quality objective for toxicity 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 16614
 
LOE ID: 26501
 
Pollutant: Toxicity
LOE Subgroup: Toxicity
Matrix: Water
Fraction: None
 
Beneficial Use: Marine Habitat
 
Number of Samples: 2
Number of Exceedances: 0
 
Data and Information Type: Fixed station physical/chemical (conventional plus toxic pollutants)
Data Used to Assess Water Quality: Toxicity tests were conducted using the upper water column sample on the mussel Mytilus galloprovincialis. Toxicity was not observed at either location.
Data Reference: Extent and Magnitude of Copper Contamination in Marinas of the San Diego Region, California. Technical Report 483.
 
Water Quality Objective/Criterion: From the Basin Plan on toxicity, all waters shall be free of toxic substances that are toxic to, or that produce detrimental physiological responses in human, plant, animal, or aquatic life.

From the Basin Plan on pesticides, no individual pesticide or combination of pesticides shall be present in the water column, sediments or biota at concentration(s) 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
(RWQCB, 2007).
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin (9).
 
Evaluation Guideline: The threshold for toxicity was less than 80% development relative to the control test species (Schiff et al, 2006)
Guideline Reference: Extent and Magnitude of Copper Contamination in Marinas of the San Diego Region, California. Technical Report 483.
 
Spatial Representation: Two stations were sampled in Oceanside Harbor. One station was located in the North Harbor, and the other in the South Harbor. Each station was sampled at upper, middle and lower levels within the water column to total three samples. Only the upper sample was used for toxicity testing.
Temporal Representation: All samples were collected on August 15, 2005.
Environmental Conditions:
QAPP Information: Quality control conducted according to SCCWRP's Quality Assurance Project Plan for the Marina Copper Monitoring Study.
QAPP Information Reference(s): Quality Assurance Project Plan, Marina Copper Monitoring Study. SWRCB Agreement No. 04-236-190-0. A
 
DECISION ID
16613
 
Pollutant: Copper
Final Listing Decision: List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision: New Decision
Revision Status Revised
Sources: Source Unknown | Unknown Nonpoint Source | Urban Runoff/Storm Sewers
Expected TMDL Completion Date: 2021
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. Two of the five samples exceed the Basin Plan water quality objective for copper.

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. Two of the five samples exceed the Basin Plan water quality objective for copper 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: 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.
 
SWRCB Board Decision / Staff Recommendation:
 
USEPA Decision:
 
 
Lines of Evidence (LOEs) for Decision ID 16613
 
LOE ID: 26500
 
Pollutant: Copper
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Marine Habitat
 
Number of Samples: 2
Number of Exceedances: 0
 
Data and Information Type: Fixed station physical/chemical (conventional plus toxic pollutants)
Data Used to Assess Water Quality: Water samples were collected from two stations in the Oceanside Harbor at upper, middle, and lower levels. The means of 3 water samples from the two stations did not exceed the acute or chronic water quality objective.
Data Reference: Extent and Magnitude of Copper Contamination in Marinas of the San Diego Region, California. Technical Report 483.
 
Water Quality Objective/Criterion: From the CTR, the dissolved copper chronic criterion is 3.1 ppb and the acute criterion is 4.8 ppb.
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin (9).
  Water Quality Standards; Establishment of Numeric Criteria for Priority Toxic Pollutants for the State of California; Rule. 40 CFR Part 131. U.S. Environmental Protection Agency, Region IX, Water Division, San Francisco, CA.
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: Two stations were sampled in Oceanside Harbor. One station was located in the North Harbor, and the other in the South Harbor. Each station was sampled at upper, middle, and lower levels within the water column to total three samples.
Temporal Representation: All samples were collected on August 15, 2005.
Environmental Conditions:
QAPP Information: Quality assurance conducted under SCCWRP's Quality Assurance Project Plan for the Marina Copper Monitoring Study.
QAPP Information Reference(s): Quality Assurance Project Plan, Marina Copper Monitoring Study. SWRCB Agreement No. 04-236-190-0. A
 
LOE ID: 26502
 
Pollutant: Copper
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Marine Habitat
 
Number of Samples: 3
Number of Exceedances: 2
 
Data and Information Type: Fixed station physical/chemical (conventional plus toxic pollutants)
Data Used to Assess Water Quality: Three water samples were collected from three stations in the Oceanside Harbor, two exceeded the acute and chronic water quality criteria.
Data Reference: Regional Harbor Monitoring Program Pilot Project 2005-06.
  Regional Harbor Monitoring Program Pilot Project 2006-07.
 
Water Quality Objective/Criterion: From the CTR, the dissolved copper chronic criterion is 3.1 ppb and the acute criterion is 4.8 ppb (U.S. EPA, 2000)
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin (9).
  Water Quality Standards; Establishment of Numeric Criteria for Priority Toxic Pollutants for the State of California; Rule. 40 CFR Part 131. U.S. Environmental Protection Agency, Region IX, Water Division, San Francisco, CA.
 
Evaluation Guideline:
Guideline Reference: Water Quality Standards; Establishment of Numeric Criteria for Priority Toxic Pollutants for the State of California; Rule. 40 CFR Part 131. U.S. Environmental Protection Agency, Region IX, Water Division, San Francisco, CA.
 
Spatial Representation: One station (O1M) was sampled in 2005 and two stations (O406M and O506M) in 2006 in Oceanside Harbor.
Temporal Representation: Samples were collected on August 15, 2005 and August 21, 2006.
Environmental Conditions:
QAPP Information: Quality assurance conducted according to Weston Solution's Quality Assurance Project Plan for San Diego Regional Harbor Monitoring Program Pilot Project.
QAPP Information Reference(s): Quality Assurance Project Plan for San Diego Regional Harbor Monitoring Program Pilot Project.