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

Supporting Information

Regional Board 4 - Los Angeles Region

Water Body Name: Channel Islands Harbor
Water Body ID: CAB4031100019990204112803
Water Body Type: Bay & Harbor
 
DECISION ID
7048
 
Pollutant: Lead (sediment)
Final Listing Decision: Delist from 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision: List on 303(d) list (TMDL required list)(2006)
Revision Status Revised
Reason for Delisting: Flaws in original listing
Impairment from Pollutant or Pollution: Pollutant
 
Weight of Evidence: This pollutant is being considered for removal from the section 303(d) list under section 4.1 of the Listing Policy. Under this section a single line of evidence is necessary to assess listing status.

Four lines of evidence are available in the administrative record to assess this pollutant. Line of evidence (LOE) 4038 is a placeholder LOE and will not be considered in this decision due to LOE 28206 including all the data listed in LOE 4038.

Data used in the 1996 water quality assessment is included in LOE 28206. This water segment-pollutant combination was listed in 1996 based on two samples and only one of those samples exceed the probable effects level for lead.

Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification for removing this water segment-pollutant combination from the 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. In 1996, this water segment-pollutant was listed based on one of two samples exceeded the probable effects level for lead and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. Based on the listing factors in the Listing Policy, the original listing was faulty.
4. A review of the available data indicates that one of seven samples exceeded the probable effects level for Lead.
5. Pursuant to section 4.11 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 removed from the section 303(d) list because applicable water quality standards for the pollutant are not being exceeded and the original listing was faulty.
 
SWRCB Board Decision / Staff Recommendation:
 
USEPA Decision:
 
 
Lines of Evidence (LOEs) for Decision ID 7048
 
LOE ID: 28210
 
Pollutant: Lead
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: None
 
Beneficial Use: Marine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: Chemical monitoring of sediments
Data Used to Assess Water Quality: Zero out of one sample exceeded the probable effects level for Lead. Sediment samples were taken and analyzed for lead in accordance with the Southern California Bight 2003 Regional Marine Monitoring Survey monitoring and testing parameters.
Data Reference: Southern CA Bight 1998 Regional Marine Monitoring Survey Data
 
Water Quality Objective/Criterion: The Basin Plan states that, "[s]urface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use."
Objective/Criterion Reference: Water Quality Control Plan Los Angeles Region R4 Basin Plan
  Basin Plan Amendments to the Water Quality Control Plan Los Angeles Region R4 Basin Plan as of 02/02/2009
 
Evaluation Guideline: MacDonald et. al. lists a sediment probable effects level of 112.18 ug/g dry weight for lead.
Guideline Reference: Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278
 
Spatial Representation: Sampling was conducted in Channel Islands Harbor at station 4131 (Lat: 34.1623250326, Long: (-119.224169922).
Temporal Representation: Grab samples were taken and analyzed on 07/22/2003.
Environmental Conditions:
QAPP Information: Data was collected in compliance with the sampling and monitoring procedures detailed in Southern California Bight 2003 Regional Marine Monitoring Survey Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 2003 Regional Marine Monitoring Survey (Bight 03) Quality Assurance Manual
 
LOE ID: 28214
 
Pollutant: Lead
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Dissolved
 
Beneficial Use: Marine Habitat
 
Number of Samples: 3
Number of Exceedances: 0
 
Data and Information Type: Chemical monitoring of sediments
Data Used to Assess Water Quality: Zero of three samples exceeded the Criterion Continuous Concentrations for lead. Water quality samples were taken and analyzed for lead in accordance with the Southern California Bight 1998 Regional Marine Monitoring Survey monitoring and testing parameters.
Data Reference: Southern CA Bight 1998 Regional Marine Monitoring Survey Chemistry Data
 
Water Quality Objective/Criterion: The California Toxics Rule lists Criterion Continuous Concentrations of 8.1 ug/L for lead to protect aquatic life in marine waters.
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: Sampling was conducted in Channel Islands Harbor at the following stations: 2129, 2130, and 2131.
Temporal Representation: Grab samples were taken and analyzed on 07/24/1998.
Environmental Conditions:
QAPP Information: Data was collected in compliance with the sampling and monitoring procedures detailed in Southern California Bight 1998 Regional Marine Monitoring Survey Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 1998 Regional Marine Monitoring Survey (Bight 98) Quality Assurance Manual
 
LOE ID: 28209
 
Pollutant: Lead
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: None
 
Beneficial Use: Marine Habitat
 
Number of Samples: 4
Number of Exceedances: 0
 
Data and Information Type: Chemical monitoring of sediments
Data Used to Assess Water Quality: Zero out of four samples exceeded the probable effects level for Lead. Sediment samples were taken and analyzed for lead in accordance with the Southern California Bight 1998 Regional Marine Monitoring Survey monitoring and testing parameters.
Data Reference: Southern CA Bight 1998 Regional Marine Monitoring Survey Data
 
Water Quality Objective/Criterion: The Basin Plan states that, "[s]urface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use."
Objective/Criterion Reference: Water Quality Control Plan Los Angeles Region R4 Basin Plan
  Basin Plan Amendments to the Water Quality Control Plan Los Angeles Region R4 Basin Plan as of 02/02/2009
 
Evaluation Guideline: MacDonald et. al. lists a sediment probable effects level of 112.18 ug/g dry weight for lead.
Guideline Reference: Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278
 
Spatial Representation: Sampling was conducted in Channel Islands Harbor at the following stations: 2129, 2130, 2131, and 2132.
Temporal Representation: Grab samples were taken and analyzed on 07/24/1998.
Environmental Conditions:
QAPP Information: Data was collected in compliance with the sampling and monitoring procedures detailed in Southern California Bight 1998 Regional Marine Monitoring Survey Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 1998 Regional Marine Monitoring Survey (Bight 98) Quality Assurance Manual
 
LOE ID: 28206
 
Pollutant: Lead
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: None
 
Beneficial Use: Marine Habitat
 
Number of Samples: 2
Number of Exceedances: 1
 
Data and Information Type: Chemical monitoring of sediments
Data Used to Assess Water Quality: One of two samples exceeded the probable effects level for Lead. Sediment samples were taken and analyzed for lead in accordance with the Bay Protection Toxic Cleanup Program monitoring and testing parameters.
Data Reference: Zinc and Lead sediment data for Channel Islands Harbor. Bay Protection Toxics Clean Program
 
Water Quality Objective/Criterion: The Basin Plan states that, "[s]urface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use."
Objective/Criterion Reference: Water Quality Control Plan Los Angeles Region R4 Basin Plan
  Basin Plan Amendments to the Water Quality Control Plan Los Angeles Region R4 Basin Plan as of 02/02/2009
 
Evaluation Guideline: MacDonald et. al. lists a sediment probable effects level of 112.18 ug/g dry weight for lead.
Guideline Reference: Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278
 
Spatial Representation: State Board conducted sampling in Channel Islands Harbor at the following stations: 623 (lat: 34.17, long: -119.227222) and 1702 (lat: 34.1661667, long: -119.2247).
Temporal Representation: Grab samples were taken and analyzed 01/13/1993 and 02/03/1997.
Environmental Conditions:
QAPP Information: Data was collected in compliance with the sampling and monitoring procedures detailed in Bay Protection Toxic Cleanup Program Quality Assurance Plan.
QAPP Information Reference(s): Bay Protection and Toxic Cleanup Program QAPP. (BPTCP). Sacramento, CA: State Water Resources Control Board
 
DECISION ID
7049
 
Pollutant: Zinc (sediment)
Final Listing Decision: Delist from 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision: List on 303(d) list (TMDL required list)(2006)
Revision Status Revised
Reason for Delisting: Flaws in original listing
Impairment from Pollutant or Pollution: Pollutant
 
Weight of Evidence: This pollutant is being considered for removal from the section 303(d) list under section 4.1 of the Listing Policy. Under this section a single line of evidence is necessary to assess listing status.

Three lines of evidence are available in the administrative record to assess this pollutant. Line of evidence (LOE) 4084 is a placeholder LOE and will not be considered in this decision due to LOE 28207 including all the data listed in LOE 4084.

Data used in the 1996 water quality assessment is included in LOE 28207. This water segment-pollutant combination was listed in 1996 based on two samples and only none of those samples exceed the probable effects level for zinc.

Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification for removing this water segment-pollutant combination from the 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. In 1996, this water segment-pollutant was listed based on zero of two samples exceeded the probable effects level for zinc and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. Based on the listing factors in the Listing Policy, the original listing was faulty.
3. A review of the available data indicates that zero of seven samples exceeded the probable effects level for zinc.
4. Pursuant to section 4.11 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 removed from the section 303(d) list because applicable water quality standards for the pollutant are not being exceeded and the original listing was faulty.
 
SWRCB Board Decision / Staff Recommendation:
 
USEPA Decision:
 
 
Lines of Evidence (LOEs) for Decision ID 7049
 
LOE ID: 28213
 
Pollutant: Zinc
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Dissolved
 
Beneficial Use: Marine Habitat
 
Number of Samples: 3
Number of Exceedances: 0
 
Data and Information Type: Chemical monitoring of sediments
Data Used to Assess Water Quality: Zero of three samples exceeded the Criterion Continuous Concentrations for zinc. Water quality samples were taken and analyzed for lead in accordance with the Southern California Bight 1998 Regional Marine Monitoring Survey monitoring and testing parameters.
Data Reference: Southern CA Bight 1998 Regional Marine Monitoring Survey Chemistry Data
 
Water Quality Objective/Criterion: The California Toxics Rule lists Criterion Continuous Concentrations of 81 ug/L for zinc to protect aquatic life in marine waters.
Objective/Criterion Reference: Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: Sampling was conducted in Channel Islands Harbor at the following stations: 2129, 2130, and 2131.
Temporal Representation: Grab samples were taken and analyzed on 07/24/1998.
Environmental Conditions:
QAPP Information: Data was collected in compliance with the sampling and monitoring procedures detailed in Southern California Bight 1998 Regional Marine Monitoring Survey Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 1998 Regional Marine Monitoring Survey (Bight 98) Quality Assurance Manual
 
LOE ID: 28211
 
Pollutant: Zinc
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: None
 
Beneficial Use: Marine Habitat
 
Number of Samples: 4
Number of Exceedances: 0
 
Data and Information Type: Chemical monitoring of sediments
Data Used to Assess Water Quality: Zero out of four samples exceeded the effects range median for Zinc. Sediment samples were taken and analyzed for lead in accordance with the Southern California Bight 1998 Regional Marine Monitoring Survey monitoring and testing parameters.
Data Reference: Southern CA Bight 1998 Regional Marine Monitoring Survey Data
 
Water Quality Objective/Criterion: The Basin Plan states that, "[s]urface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use."
Objective/Criterion Reference: Water Quality Control Plan Los Angeles Region R4 Basin Plan
  Basin Plan Amendments to the Water Quality Control Plan Los Angeles Region R4 Basin Plan as of 02/02/2009
 
Evaluation Guideline: Long et. al. lists a sediment effects range median of 410 ug/g dry weight for Zinc.
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: Sampling was conducted in Channel Islands Harbor at the following stations: 2129, 2130, 2131, and 2132.
Temporal Representation: Grab samples were taken and analyzed on 07/24/1998.
Environmental Conditions:
QAPP Information: Data was collected in compliance with the sampling and monitoring procedures detailed in Southern California Bight 1998 Regional Marine Monitoring Survey Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 1998 Regional Marine Monitoring Survey (Bight 98) Quality Assurance Manual
 
LOE ID: 28212
 
Pollutant: Zinc
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: None
 
Beneficial Use: Marine Habitat
 
Number of Samples: 1
Number of Exceedances: 0
 
Data and Information Type: Chemical monitoring of sediments
Data Used to Assess Water Quality: Zero out of one sample exceeded the effects range median for Zinc. Sediment samples were taken and analyzed for lead in accordance with the Southern California Bight 2003 Regional Marine Monitoring Survey monitoring and testing parameters.
Data Reference: Southern CA Bight 1998 Regional Marine Monitoring Survey Data
 
Water Quality Objective/Criterion: The Basin Plan states that, "[s]urface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use."
Objective/Criterion Reference: Water Quality Control Plan Los Angeles Region R4 Basin Plan
  Basin Plan Amendments to the Water Quality Control Plan Los Angeles Region R4 Basin Plan as of 02/02/2009
 
Evaluation Guideline: Long et. al. lists a sediment effects range median of 410 ug/g dry weight for Zinc.
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: Sampling was conducted in Channel Islands Harbor at station 4131 (Lat: 34.1623250326, Long: (-119.224169922).
Temporal Representation: Grab samples were taken and analyzed on 07/22/2003.
Environmental Conditions:
QAPP Information: Data was collected in compliance with the sampling and monitoring procedures detailed in Southern California Bight 2003 Regional Marine Monitoring Survey Quality Assurance Manual.
QAPP Information Reference(s): Southern California Bight 2003 Regional Marine Monitoring Survey (Bight 03) Quality Assurance Manual
 
LOE ID: 28207
 
Pollutant: Zinc
LOE Subgroup: Pollutant-Sediment
Matrix: Sediment
Fraction: None
 
Beneficial Use: Marine Habitat
 
Number of Samples: 2
Number of Exceedances: 0
 
Data and Information Type: Chemical monitoring of sediments
Data Used to Assess Water Quality: Zero out of two samples exceeded the effects range median for Zinc. Sediment samples were taken and analyzed for Zinc in accordance with the Bay Protection Toxic Cleanup Program monitoring and testing parameters.
Data Reference: Zinc and Lead sediment data for Channel Islands Harbor. Bay Protection Toxics Clean Program
 
Water Quality Objective/Criterion: The Basin Plan states that, "[s]urface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use."
Objective/Criterion Reference: Water Quality Control Plan Los Angeles Region R4 Basin Plan
  Basin Plan Amendments to the Water Quality Control Plan Los Angeles Region R4 Basin Plan as of 02/02/2009
 
Evaluation Guideline: Long et. al. lists a sediment effects range median of 410 ug/g dry weight for Zinc.
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: State Board conducted sampling in Channel Islands Harbor at the following stations: 623 (lat: 34.17, long: -119.227222) and 1702 (lat: 34.1661667, long: -119.2247).
Temporal Representation: Grab samples were taken and analyzed 01/13/1993 and 02/03/1997.
Environmental Conditions:
QAPP Information: Data was collected in compliance with the sampling and monitoring procedures detailed in Bay Protection Toxic Cleanup Program Quality Assurance Plan.
QAPP Information Reference(s): Bay Protection and Toxic Cleanup Program QAPP. (BPTCP). Sacramento, CA: State Water Resources Control Board