Final California 2026 Integrated Report (303(d) List/305(b) Report)
Supporting Information
Regional Board 7 - Colorado River Basin Region
Water Body Name:
Wiest Lake
Water Body ID:
CAL7231000020000127135508
Water Body Type:
Lake & Reservoir
DECISION ID
170140
Region 7
Wiest Lake
Pollutant:
DDT (Dichlorodiphenyltrichloroethane)
Final Listing Decision:
Do Not Delist from 303(d) list (being addressed with USEPA approved TMDL)
Last Listing Cycle's Final Listing Decision:
Do Not Delist from 303(d) list (TMDL required list)(2018)
Revision Status
Revised
Sources:
Agriculture
TMDL Name:
Imperial Valley Organochlorine Compounds and Organophosphate Pesticides TMDL
TMDL Project Code:
1289
Date TMDL Approved by USEPA:
03/19/2024
Impairment from Pollutant or Pollution:
Pollutant
Regional Board Conclusion:
This pollutant is being considered for removal from the section 303(d) list under section 3.11 and 4.5 of the Listing Policy. Under section 4.5 a single line of evidence is necessary to assess listing status.
Under section 3.11 when all other listing factors do not result in the listing of a water segment, but information indicates non-attainment of standards, a water segment shall be evaluated to determine whether the weight of evidence demonstrates that water quality standard is not attained. If the weight of evidence indicates non-attainment, the water segment shall be placed on the CWA section 303(d) List.
The COMM beneficial use has not been designated to this waterbody. However, data were collected in this waterbody by the Surface Water Ambient Monitoring Program to monitor pollutants in fish tissue for the purpose of evaluating risks to human health from consumption. Additionally, this waterbody was planted by CDFW in 2023
Data were collected as recent as 2018 and 2 out of 2 and 7 out of 10 samples exceed the allowable frequency based on table 3.1 of the Listing Policy.
The weight of evidence of the data and information indicate water quality standards are not attained.
Fourteen lines of evidence are available in the administrative record to assess this pollutant.
Two of two total fraction and seven of ten fish fillet fraction tissue samples exceeded the water quality OEHHA guideline.
Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against 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. Two of two total fraction and seven of ten fish fillet fraction tissue samples exceeded the water quality OEHHA guideline.
This exceeds the allowable frequency listed in Table 4.1 of the Listing Policy. 4. Pursuant to section 4.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.
Regional Board Decision Recommendation:
After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be removed from the section 303(d) list because applicable water quality standards for the pollutant are being exceeded.
State Board Review of Regional Board Conclusion and Recommendation:
State Board Decision Recommendation:
After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.
Listing Extent:
Line of Evidence (LOE) for Decision ID 170140, DDT (Dichlorodiphenyltrichloroethane)
Region 7
Wiest Lake
LOE ID:
126635
Pollutant:
Total DDT (sum of 4,4'- and 2,4'- isomers of DDT, DDE, and DDD)
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Cold Freshwater Habitat
Number of Samples:
3
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP RWB7 Monitoring data for Wiest Lake to determine beneficial use support and the results are as follows 0 of the 3 samples exceeded the water quality standard for Total DDT (sum of 4,4'- and 2,4'- isomers of DDT, DDE, and DDD). Data were collected for 3 fish species (1 composite(s) of Channel Catfish each composed of 3 fish per composite, 1 composite(s) of Channel Catfish each composed of 9 fish per composite, 1 composite(s) of Striped Bass each composed of 3 fish per composite).
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
National Academy of Science guidelines (NAS 1972) establish a maximum total DDT concentration of 1000 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Line of Evidence (LOE) for Decision ID 170140, DDT (Dichlorodiphenyltrichloroethane)
Region 7
Wiest Lake
LOE ID:
46280
Pollutant:
Total DDT (sum of 4,4'- and 2,4'- isomers of DDT, DDE, and DDD)
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Cold Freshwater Habitat
Number of Samples:
2
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use support and results
Final California 2026 Integrated Report (303(d) List/305(b) Report)
Supporting Information
Regional Board 7 - Colorado River Basin Region
Water Body Name:
Wiest Lake
Water Body ID:
CAL7231000020000127135508
Water Body Type:
Lake & Reservoir
DECISION ID
170140
Region 7
Wiest Lake
Pollutant:
DDT (Dichlorodiphenyltrichloroethane)
Final Listing Decision:
Do Not Delist from 303(d) list (being addressed with USEPA approved TMDL)
Last Listing Cycle's Final Listing Decision:
Do Not Delist from 303(d) list (TMDL required list)(2018)
Revision Status
Revised
Sources:
Agriculture
TMDL Name:
Imperial Valley Organochlorine Compounds and Organophosphate Pesticides TMDL
TMDL Project Code:
1289
Date TMDL Approved by USEPA:
03/19/2024
Impairment from Pollutant or Pollution:
Pollutant
Regional Board Conclusion:
This pollutant is being considered for removal from the section 303(d) list under section 3.11 and 4.5 of the Listing Policy. Under section 4.5 a single line of evidence is necessary to assess listing status.
Under section 3.11 when all other listing factors do not result in the listing of a water segment, but information indicates non-attainment of standards, a water segment shall be evaluated to determine whether the weight of evidence demonstrates that water quality standard is not attained. If the weight of evidence indicates non-attainment, the water segment shall be placed on the CWA section 303(d) List.
The COMM beneficial use has not been designated to this waterbody. However, data were collected in this waterbody by the Surface Water Ambient Monitoring Program to monitor pollutants in fish tissue for the purpose of evaluating risks to human health from consumption. Additionally, this waterbody was planted by CDFW in 2023
Data were collected as recent as 2018 and 2 out of 2 and 7 out of 10 samples exceed the allowable frequency based on table 3.1 of the Listing Policy.
The weight of evidence of the data and information indicate water quality standards are not attained.
Fourteen lines of evidence are available in the administrative record to assess this pollutant.
Two of two total fraction and seven of ten fish fillet fraction tissue samples exceeded the water quality OEHHA guideline.
Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against 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. Two of two total fraction and seven of ten fish fillet fraction tissue samples exceeded the water quality OEHHA guideline.
This exceeds the allowable frequency listed in Table 4.1 of the Listing Policy. 4. Pursuant to section 4.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.
Regional Board Decision Recommendation:
After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be removed from the section 303(d) list because applicable water quality standards for the pollutant are being exceeded.
State Board Review of Regional Board Conclusion and Recommendation:
State Board Decision Recommendation:
After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.
Listing Extent:
Line of Evidence (LOE) for Decision ID 170140, DDT (Dichlorodiphenyltrichloroethane)
Region 7
Wiest Lake
LOE ID:
126635
Pollutant:
Total DDT (sum of 4,4'- and 2,4'- isomers of DDT, DDE, and DDD)
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Cold Freshwater Habitat
Number of Samples:
3
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP RWB7 Monitoring data for Wiest Lake to determine beneficial use support and the results are as follows 0 of the 3 samples exceeded the water quality standard for Total DDT (sum of 4,4'- and 2,4'- isomers of DDT, DDE, and DDD). Data were collected for 3 fish species (1 composite(s) of Channel Catfish each composed of 3 fish per composite, 1 composite(s) of Channel Catfish each composed of 9 fish per composite, 1 composite(s) of Striped Bass each composed of 3 fish per composite).
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
National Academy of Science guidelines (NAS 1972) establish a maximum total DDT concentration of 1000 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Line of Evidence (LOE) for Decision ID 170140, DDT (Dichlorodiphenyltrichloroethane)
Region 7
Wiest Lake
LOE ID:
46280
Pollutant:
Total DDT (sum of 4,4'- and 2,4'- isomers of DDT, DDE, and DDD)
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Cold Freshwater Habitat
Number of Samples:
2
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for DDT, Total. Six composites were generated from two species: black crappie and channel catfish. Composites comprised of 3 - 4 fish for black crappie and 2 -3 fish for channel catfish. Total DDT was calculated as the sum of 4,4'- and 2,4'- isomers of DDT, DDE, and DDD. Composites collected at the same time on the same day for the same species were averaged in accordance with the listing policy.
No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (Water Quality Control Plan, Colorado River Basin).
National Academy of Science guidelines (NAS 1972) establish a maximum total DDT concentration of 1000 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Line of Evidence (LOE) for Decision ID 170140, DDT (Dichlorodiphenyltrichloroethane)
Region 7
Wiest Lake
LOE ID:
46297
Pollutant:
Total DDT (sum of 4,4'- and 2,4'- isomers of DDT, DDE, and DDD)
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Cold Freshwater Habitat
Number of Samples:
1
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for DDT, Total. One composite (3 fish per composite) was generated from one species: channel catfish. Details of the compositing protocol can be found in the March 2009 report entitled: "Contaminants in Fish from California Lakes and Reservoirs: Technical Report on Year One of a Two-Year Screening Study" (SWAMP, 2009). Total DDT was calculated as the sum of 4,4'- and 2,4'- isomers of DDT, DDE, and DDD.
No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (Water Quality Control Plan, Colorado River Basin).
National Academy of Science guidelines (NAS 1972) establish a maximum total DDT concentration of 1000 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Data for this line of evidence for Wiest Lake was collected at 1 monitoring site [ Wiest Lake_BOG - 723PWT019]. Samples were collected from 1 location. Individual sample locations consisted of an area within a given waterbody from which fish tissue samples were collected. The number of sample locations per waterbody was based on the overall size of the waterbody (SWAMP, 2010). Specifics of individual sampling locations can be found in the supplemental report entitled "Cruise Report for the Surface Waters Ambient Monitoring Program (SWAMP) Bioaccumulation Screening Study in California Lakes and Reservoirs, Sampling Dates: June 2007- March 2008" (SWAMP, 2008).
Temporal Representation:
Data was collected on a single day 11/1/2007.
Environmental Conditions:
Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:
Samples were collected, processed, and analyzed in accordance with the methods described in Quality Assurance Project Plan "Screening Study of Bioaccumulation in California Lakes and Reservoirs." (SWAMP, 2002).
Line of Evidence (LOE) for Decision ID 170140, DDT (Dichlorodiphenyltrichloroethane)
Region 7
Wiest Lake
LOE ID:
5588
Pollutant:
DDT (Dichlorodiphenyltrichloroethane)
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Total
Beneficial Use:
Warm Freshwater Habitat
Number of Samples:
2
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Two fish fillet samples were taken at 1 location in the lake. The samples were generally collected in 10/1989 and 12/1999. Of these two samples, neither exceeded the NAS tissue guideline (TSMP, 2007).
Basin Plan: No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (CRBRWQCB, 2006).
Samples were collected from the interior of Wiest Lake.
Temporal Representation:
Two largemouth bass fillet composite samples were collected in 10/1989 and 12/1999.
Environmental Conditions:
QAPP Information:
The field procedures are described in TSMP Data Reports and associated Appendices. CDFG's Laboratory applies Quality Assurance Program Plan procedures for laboratory Quality Assurance and Quality Control, as described in Rasmussen (1993).
Line of Evidence (LOE) for Decision ID 170140, DDT (Dichlorodiphenyltrichloroethane)
Region 7
Wiest Lake
LOE ID:
5551
Pollutant:
DDT (Dichlorodiphenyltrichloroethane)
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Total
Beneficial Use:
Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:
2
Number of Exceedances:
2
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Two fish fillet samples were taken at 1 location in the lake. The samples were generally collected in 10/1989 and 12/1999. Of these two samples, both exceeded the OEHHA Fish Contaminant Goal. The exceedances were found in 2 largemouth bass fillet composite samples collected on 10/31/1989, and 12/06/1999 (TSMP, 2007).
Basin Plan: No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (CRBRWQCB, 2006).
Samples were collected from the interior of Wiest Lake.
Temporal Representation:
Two largemouth bass fillet composite samples were collected in 10/1989 and 12/1999. Exceedances were found in samples collected on 10/31/1989, and 12/06/1999.
Environmental Conditions:
QAPP Information:
The field procedures are described in TSMP Data Reports and associated Appendices. CDFG's Laboratory applies Quality Assurance Program Plan procedures for laboratory Quality Assurance and Quality Control, as described in Rasmussen (1993).
Line of Evidence (LOE) for Decision ID 170140, DDT (Dichlorodiphenyltrichloroethane)
Region 7
Wiest Lake
LOE ID:
126618
Pollutant:
Total DDT (sum of 4,4'- and 2,4'- isomers of DDT, DDE, and DDD)
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Cold Freshwater Habitat
Number of Samples:
4
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed RWB7 TMDL data for Wiest Lake to determine beneficial use support and the results are as follows 0 of the 4 samples exceeded the water quality standard for Total DDT (sum of 4,4'- and 2,4'- isomers of DDT, DDE, and DDD). Data were collected for 4 fish species (1 composite(s) of Largemouth Bass each composed of 1 fish per composite, 1 composite(s) of Black Crappie each composed of 5 fish per composite, 1 composite(s) of Common Carp each composed of 5 fish per composite, 1 composite(s) of Largemouth Bass each composed of 5 fish per composite).
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
National Academy of Science guidelines (NAS 1972) establish a maximum total DDT concentration of 1000 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Line of Evidence (LOE) for Decision ID 170140, DDT (Dichlorodiphenyltrichloroethane)
Region 7
Wiest Lake
LOE ID:
46281
Pollutant:
Total DDT (sum of 4,4'- and 2,4'- isomers of DDT, DDE, and DDD)
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Warm Freshwater Habitat
Number of Samples:
2
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use are as follows: 0 of 2 samples exceed the criterion for DDT, Total. Six composites were generated from two species: black crappie and channel catfish. Composites comprised of 3 - 4 fish for black crappie and 2 -3 fish for channel catfish. Total DDT was calculated as the sum of 4,4'- and 2,4'- isomers of DDT, DDE, and DDD. Composites collected at the same time on the same day for the same species were averaged in accordance with the listing policy.
No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (Water Quality Control Plan, Colorado River Basin).
National Academy of Science guidelines (NAS 1972) establish a maximum total DDT concentration of 1000 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Line of Evidence (LOE) for Decision ID 170140, DDT (Dichlorodiphenyltrichloroethane)
Region 7
Wiest Lake
LOE ID:
46297
Pollutant:
Total DDT (sum of 4,4'- and 2,4'- isomers of DDT, DDE, and DDD)
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Cold Freshwater Habitat
Number of Samples:
1
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for DDT, Total. One composite (3 fish per composite) was generated from one species: channel catfish. Details of the compositing protocol can be found in the March 2009 report entitled: "Contaminants in Fish from California Lakes and Reservoirs: Technical Report on Year One of a Two-Year Screening Study" (SWAMP, 2009). Total DDT was calculated as the sum of 4,4'- and 2,4'- isomers of DDT, DDE, and DDD.
No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (Water Quality Control Plan, Colorado River Basin).
National Academy of Science guidelines (NAS 1972) establish a maximum total DDT concentration of 1000 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Line of Evidence (LOE) for Decision ID 170140, DDT (Dichlorodiphenyltrichloroethane)
Region 7
Wiest Lake
LOE ID:
126271
Pollutant:
Total DDT (sum of 4,4'- and 2,4'- isomers of DDT, DDE, and DDD)
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:
3
Number of Exceedances:
2
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP RWB7 Monitoring data for Wiest Lake to determine beneficial use support and the results are as follows 2 of the 3 samples exceeded the water quality standard for Total DDT (sum of 4,4'- and 2,4'- isomers of DDT, DDE, and DDD). Data were collected for 3 fish species (1 composite(s) of Channel Catfish each composed of 3 fish per composite, 1 composite(s) of Channel Catfish each composed of 9 fish per composite, 1 composite(s) of Striped Bass each composed of 3 fish per composite). Of these, 1 species (Channel Catfish) exceeded the water quality standard.
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
The modified OEHHA Fish Contaminant Goal for total DDT in fish tissue is 15 ppb. This screening level assumes an average body weight of 70 kg and a consumption rate of 32 g/day for a 30 year exposure over a 70-year lifetime. This constituent is a carcinogen therefore the risk level is set to one in a million. A cooking reduction factor of 1 is applied for skin-off fillets. (Klasing, S., and R. Brodberg, 2008)
Line of Evidence (LOE) for Decision ID 170140, DDT (Dichlorodiphenyltrichloroethane)
Region 7
Wiest Lake
LOE ID:
46269
Pollutant:
Total DDT (sum of 4,4'- and 2,4'- isomers of DDT, DDE, and DDD)
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:
2
Number of Exceedances:
1
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use support and results are as follows: 1 of 2 samples exceed the criterion for DDT, Total. Six composites were generated from two species: black crappie and channel catfish. Composites comprised of 3 - 4 fish for black crappie and 2 -3 fish for channel catfish. Total DDT was calculated as the sum of 4,4'- and 2,4'- isomers of DDT, DDE, and DDD. Composites collected at the same time on the same day for the same species were averaged in accordance with the listing policy.
No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (Water Quality Control Plan, Colorado River Basin).
The modified OEHHA Fish Contaminant Goal for total DDT in fish tissue is 15 ppb. This screening level assumes an average body weight of 70 kg and a consumption rate of 32 g/day for a 30 year exposure over a 70-year lifetime. This constituent is a carcinogen therefore the risk level is set to one in a million. A cooking reduction factor of 1 is applied for skin-off fillets.
No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (Water Quality Control Plan, Colorado River Basin).
National Academy of Science guidelines (NAS 1972) establish a maximum total DDT concentration of 1000 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Data for this line of evidence for Wiest Lake was collected at 1 monitoring site [ Wiest Lake_BOG - 723PWT019]. Samples were collected from 1 location. Individual sample locations consisted of an area within a given waterbody from which fish tissue samples were collected. The number of sample locations per waterbody was based on the overall size of the waterbody (SWAMP, 2010). Specifics of individual sampling locations can be found in the supplemental report entitled "Cruise Report for the Surface Waters Ambient Monitoring Program (SWAMP) Bioaccumulation Screening Study in California Lakes and Reservoirs, Sampling Dates: June 2007- March 2008" (SWAMP, 2008).
Temporal Representation:
Data was collected on a single day 11/1/2007.
Environmental Conditions:
Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:
Samples were collected, processed, and analyzed in accordance with the methods described in Quality Assurance Project Plan "Screening Study of Bioaccumulation in California Lakes and Reservoirs." (SWAMP, 2002).
Line of Evidence (LOE) for Decision ID 170140, DDT (Dichlorodiphenyltrichloroethane)
Region 7
Wiest Lake
LOE ID:
5588
Pollutant:
DDT (Dichlorodiphenyltrichloroethane)
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Total
Beneficial Use:
Warm Freshwater Habitat
Number of Samples:
2
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Two fish fillet samples were taken at 1 location in the lake. The samples were generally collected in 10/1989 and 12/1999. Of these two samples, neither exceeded the NAS tissue guideline (TSMP, 2007).
Basin Plan: No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (CRBRWQCB, 2006).
Line of Evidence (LOE) for Decision ID 170140, DDT (Dichlorodiphenyltrichloroethane)
Region 7
Wiest Lake
LOE ID:
126380
Pollutant:
Total DDT (sum of 4,4'- and 2,4'- isomers of DDT, DDE, and DDD)
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:
4
Number of Exceedances:
3
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed RWB7 TMDL data for Wiest Lake to determine beneficial use support and the results are as follows 3 of the 4 samples exceeded the water quality standard for Total DDT (sum of 4,4'- and 2,4'- isomers of DDT, DDE, and DDD). Data were collected for 4 fish species (1 composite(s) of Largemouth Bass each composed of 1 fish per composite, 1 composite(s) of Black Crappie each composed of 5 fish per composite, 1 composite(s) of Common Carp each composed of 5 fish per composite, 1 composite(s) of Largemouth Bass each composed of 5 fish per composite). Of these, 2 species (Common Carp, Largemouth Bass) exceeded the water quality standard.
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
The modified OEHHA Fish Contaminant Goal for total DDT in fish tissue is 15 ppb. This screening level assumes an average body weight of 70 kg and a consumption rate of 32 g/day for a 30 year exposure over a 70-year lifetime. This constituent is a carcinogen therefore the risk level is set to one in a million. A cooking reduction factor of 1 is applied for skin-off fillets. (Klasing, S., and R. Brodberg, 2008)
Line of Evidence (LOE) for Decision ID 170140, DDT (Dichlorodiphenyltrichloroethane)
Region 7
Wiest Lake
LOE ID:
46298
Pollutant:
Total DDT (sum of 4,4'- and 2,4'- isomers of DDT, DDE, and DDD)
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Warm Freshwater Habitat
Number of Samples:
1
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for DDT, Total. One composite (3 fish per composite) was generated from one species: channel catfish. Details of the compositing protocol can be found in the March 2009 report entitled: "Contaminants in Fish from California Lakes and Reservoirs: Technical Report on Year One of a Two-Year Screening Study" (SWAMP, 2009). Total DDT was calculated as the sum of 4,4'- and 2,4'- isomers of DDT, DDE, and DDD.
No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (Water Quality Control Plan, Colorado River Basin).
National Academy of Science guidelines (NAS 1972) establish a maximum total DDT concentration of 1000 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Data for this line of evidence for Wiest Lake was collected at 1 monitoring site [ Wiest Lake_BOG - 723PWT019]. Samples were collected from 1 location. Individual sample locations consisted of an area within a given waterbody from which fish tissue samples were collected. The number of sample locations per waterbody was based on the overall size of the waterbody (SWAMP, 2010). Specifics of individual sampling locations can be found in the supplemental report entitled "Cruise Report for the Surface Waters Ambient Monitoring Program (SWAMP) Bioaccumulation Screening Study in California Lakes and Reservoirs, Sampling Dates: June 2007- March 2008" (SWAMP, 2008).
Temporal Representation:
Data was collected on a single day 11/1/2007.
Environmental Conditions:
Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:
Samples were collected, processed, and analyzed in accordance with the methods described in Quality Assurance Project Plan "Screening Study of Bioaccumulation in California Lakes and Reservoirs." (SWAMP, 2002).
Line of Evidence (LOE) for Decision ID 170140, DDT (Dichlorodiphenyltrichloroethane)
Region 7
Wiest Lake
LOE ID:
126270
Pollutant:
Total DDT (sum of 4,4'- and 2,4'- isomers of DDT, DDE, and DDD)
LOE Subgroup:
Spatial Representation:
Samples were collected from the interior of Wiest Lake.
Temporal Representation:
Two largemouth bass fillet composite samples were collected in 10/1989 and 12/1999.
Environmental Conditions:
QAPP Information:
The field procedures are described in TSMP Data Reports and associated Appendices. CDFG's Laboratory applies Quality Assurance Program Plan procedures for laboratory Quality Assurance and Quality Control, as described in Rasmussen (1993).
Line of Evidence (LOE) for Decision ID 170140, DDT (Dichlorodiphenyltrichloroethane)
Region 7
Wiest Lake
LOE ID:
5551
Pollutant:
DDT (Dichlorodiphenyltrichloroethane)
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Total
Beneficial Use:
Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:
2
Number of Exceedances:
2
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Two fish fillet samples were taken at 1 location in the lake. The samples were generally collected in 10/1989 and 12/1999. Of these two samples, both exceeded the OEHHA Fish Contaminant Goal. The exceedances were found in 2 largemouth bass fillet composite samples collected on 10/31/1989, and 12/06/1999 (TSMP, 2007).
Basin Plan: No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (CRBRWQCB, 2006).
Samples were collected from the interior of Wiest Lake.
Temporal Representation:
Two largemouth bass fillet composite samples were collected in 10/1989 and 12/1999. Exceedances were found in samples collected on 10/31/1989, and 12/06/1999.
Environmental Conditions:
QAPP Information:
The field procedures are described in TSMP Data Reports and associated Appendices. CDFG's Laboratory applies Quality Assurance Program Plan procedures for laboratory Quality Assurance and Quality Control, as described in Rasmussen (1993).
Line of Evidence (LOE) for Decision ID 170140, DDT (Dichlorodiphenyltrichloroethane)
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Warm Freshwater Habitat
Number of Samples:
4
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed RWB7 TMDL data for Wiest Lake to determine beneficial use support and the results are as follows 0 of the 4 samples exceeded the water quality standard for Total DDT (sum of 4,4'- and 2,4'- isomers of DDT, DDE, and DDD). Data were collected for 4 fish species (1 composite(s) of Largemouth Bass each composed of 1 fish per composite, 1 composite(s) of Black Crappie each composed of 5 fish per composite, 1 composite(s) of Common Carp each composed of 5 fish per composite, 1 composite(s) of Largemouth Bass each composed of 5 fish per composite).
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
National Academy of Science guidelines (NAS 1972) establish a maximum total DDT concentration of 1000 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Line of Evidence (LOE) for Decision ID 170140, DDT (Dichlorodiphenyltrichloroethane)
Region 7
Wiest Lake
LOE ID:
126634
Pollutant:
Total DDT (sum of 4,4'- and 2,4'- isomers of DDT, DDE, and DDD)
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Warm Freshwater Habitat
Number of Samples:
3
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP RWB7 Monitoring data for Wiest Lake to determine beneficial use support and the results are as follows 0 of the 3 samples exceeded the water quality standard for Total DDT (sum of 4,4'- and 2,4'- isomers of DDT, DDE, and DDD). Data were collected for 3 fish species (1 composite(s) of Channel Catfish each composed of 3 fish per composite, 1 composite(s) of Channel Catfish each composed of 9 fish per composite, 1 composite(s) of Striped Bass each composed of 3 fish per composite).
Total DDT (sum of 4,4'- and 2,4'- isomers of DDT, DDE, and DDD)
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Cold Freshwater Habitat
Number of Samples:
4
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed RWB7 TMDL data for Wiest Lake to determine beneficial use support and the results are as follows 0 of the 4 samples exceeded the water quality standard for Total DDT (sum of 4,4'- and 2,4'- isomers of DDT, DDE, and DDD). Data were collected for 4 fish species (1 composite(s) of Largemouth Bass each composed of 1 fish per composite, 1 composite(s) of Black Crappie each composed of 5 fish per composite, 1 composite(s) of Common Carp each composed of 5 fish per composite, 1 composite(s) of Largemouth Bass each composed of 5 fish per composite).
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
National Academy of Science guidelines (NAS 1972) establish a maximum total DDT concentration of 1000 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Line of Evidence (LOE) for Decision ID 170140, DDT (Dichlorodiphenyltrichloroethane)
Region 7
Wiest Lake
LOE ID:
46281
Pollutant:
Total DDT (sum of 4,4'- and 2,4'- isomers of DDT, DDE, and DDD)
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Warm Freshwater Habitat
Number of Samples:
2
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for DDT, Total. Six composites were generated from two species: black crappie and channel catfish. Composites comprised of 3 - 4 fish for black crappie and 2 -3 fish for channel catfish. Total DDT was calculated as the sum of 4,4'- and 2,4'- isomers of DDT, DDE, and DDD. Composites collected at the same time on the same day for the same species were averaged in accordance with the listing policy.
No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (Water Quality Control Plan, Colorado River Basin).
National Academy of Science guidelines (NAS 1972) establish a maximum total DDT concentration of 1000 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Line of Evidence (LOE) for Decision ID 170140, DDT (Dichlorodiphenyltrichloroethane)
Region 7
Wiest Lake
LOE ID:
126271
Pollutant:
Total DDT (sum of 4,4'- and 2,4'- isomers of DDT, DDE, and DDD)
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:
3
Number of Exceedances:
2
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP RWB7 Monitoring data for Wiest Lake to determine beneficial use support and the results are as follows 2 of the 3 samples exceeded the water quality standard for Total DDT (sum of 4,4'- and 2,4'- isomers of DDT, DDE, and DDD). Data were collected for 3 fish species (1 composite(s) of Channel Catfish each composed of 3 fish per composite, 1 composite(s) of Channel Catfish each composed of 9 fish per composite, 1 composite(s) of Striped Bass each composed of 3 fish per composite). Of these, 1 species (Channel Catfish) exceeded the water quality standard.
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
National Academy of Science guidelines (NAS 1972) establish a maximum total DDT concentration of 1000 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Line of Evidence (LOE) for Decision ID 170140, DDT (Dichlorodiphenyltrichloroethane)
Region 7
Wiest Lake
LOE ID:
46296
Pollutant:
Total DDT (sum of 4,4'- and 2,4'- isomers of DDT, DDE, and DDD)
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:
1
Number of Exceedances:
1
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use support and results are as follows: 1 of 1 samples exceed the criterion for DDT, Total. One composite (3 fish per composite) was generated from one species: channel catfish. Details of the compositing protocol can be found in the March 2009 report entitled: "Contaminants in Fish from California Lakes and Reservoirs: Technical Report on Year One of a Two-Year Screening Study" (SWAMP, 2009). Total DDT was calculated as the sum of 4,4'- and 2,4'- isomers of DDT, DDE, and DDD.
No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (Water Quality Control Plan, Colorado River Basin).
The modified OEHHA Fish Contaminant Goal for total DDT in fish tissue is 15 ppb. This screening level assumes an average body weight of 70 kg and a consumption rate of 32 g/day for a 30 year exposure over a 70-year lifetime. This constituent is a carcinogen therefore the risk level is set to one in a million. A cooking reduction factor of 1 is applied for skin-off fillets.
Data for this line of evidence for Wiest Lake was collected at 1 monitoring site [ Wiest Lake_BOG - 723PWT019]. Samples were collected from 1 location. Individual sample locations consisted of an area within a given waterbody from which fish tissue samples were collected. The number of sample locations per waterbody was based on the overall size of the waterbody (SWAMP, 2010). Specifics of individual sampling locations can be found in the supplemental report entitled "Cruise Report for the Surface Waters Ambient Monitoring Program (SWAMP) Bioaccumulation Screening Study in California Lakes and Reservoirs, Sampling Dates: June 2007- March 2008" (SWAMP, 2008).
Temporal Representation:
Data was collected on a single day 11/1/2007.
Environmental Conditions:
Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:
Samples were collected, processed, and analyzed in accordance with the methods described in Quality Assurance Project Plan "Screening Study of Bioaccumulation in California Lakes and Reservoirs." (SWAMP, 2002).
>The modified OEHHA Fish Contaminant Goal for total DDT in fish tissue is 15 ppb. This screening level assumes an average body weight of 70 kg and a consumption rate of 32 g/day for a 30 year exposure over a 70-year lifetime. This constituent is a carcinogen therefore the risk level is set to one in a million. A cooking reduction factor of 1 is applied for skin-off fillets. (Klasing, S., and R. Brodberg, 2008)
Line of Evidence (LOE) for Decision ID 170140, DDT (Dichlorodiphenyltrichloroethane)
Region 7
Wiest Lake
LOE ID:
46269
Pollutant:
Total DDT (sum of 4,4'- and 2,4'- isomers of DDT, DDE, and DDD)
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:
2
Number of Exceedances:
1
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use support and results are as follows: 1 of 2 samples exceed the criterion for DDT, Total. Six composites were generated from two species: black crappie and channel catfish. Composites comprised of 3 - 4 fish for black crappie and 2 -3 fish for channel catfish. Total DDT was calculated as the sum of 4,4'- and 2,4'- isomers of DDT, DDE, and DDD. Composites collected at the same time on the same day for the same species were averaged in accordance with the listing policy.
No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (Water Quality Control Plan, Colorado River Basin).
The modified OEHHA Fish Contaminant Goal for total DDT in fish tissue is 15 ppb. This screening level assumes an average body weight of 70 kg and a consumption rate of 32 g/day for a 30 year exposure over a 70-year lifetime. This constituent is a carcinogen therefore the risk level is set to one in a million. A cooking reduction factor of 1 is applied for skin-off fillets.
Line of Evidence (LOE) for Decision ID 170140, DDT (Dichlorodiphenyltrichloroethane)
Region 7
Wiest Lake
LOE ID:
126380
Pollutant:
Total DDT (sum of 4,4'- and 2,4'- isomers of DDT, DDE, and DDD)
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:
4
Number of Exceedances:
3
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed RWB7 TMDL data for Wiest Lake to determine beneficial use support and the results are as follows 3 of the 4 samples exceeded the water quality standard for Total DDT (sum of 4,4'- and 2,4'- isomers of DDT, DDE, and DDD). Data were collected for 4 fish species (1 composite(s) of Largemouth Bass each composed of 1 fish per composite, 1 composite(s) of Black Crappie each composed of 5 fish per composite, 1 composite(s) of Common Carp each composed of 5 fish per composite, 1 composite(s) of Largemouth Bass each composed of 5 fish per composite). Of these, 2 species (Common Carp, Largemouth Bass) exceeded the water quality standard.
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
The modified OEHHA Fish Contaminant Goal for total DDT in fish tissue is 15 ppb. This screening level assumes an average body weight of 70 kg and a consumption rate of 32 g/day for a 30 year exposure over a 70-year lifetime. This constituent is a carcinogen therefore the risk level is set to one in a million. A cooking reduction factor of 1 is applied for skin-off fillets. (Klasing, S., and R. Brodberg, 2008)
Line of Evidence (LOE) for Decision ID 170140, DDT (Dichlorodiphenyltrichloroethane)
Region 7
Wiest Lake
LOE ID:
46298
Pollutant:
Total DDT (sum of 4,4'- and 2,4'- isomers of DDT, DDE, and DDD)
L
DECISION ID
164475
Region 7
Wiest Lake
Pollutant:
Dieldrin
Final Listing Decision:
Do Not Delist from 303(d) list (being addressed with USEPA approved TMDL)
Last Listing Cycle's Final Listing Decision:
Do Not Delist from 303(d) list (TMDL required list)(2018)
Revision Status
Revised
Sources:
Agriculture
TMDL Name:
Imperial Valley Organochlorine Compounds and Organophosphate Pesticides TMDL
TMDL Project Code:
1289
Date TMDL Approved by USEPA:
03/19/2024
Impairment from Pollutant or Pollution:
Pollutant
Regional Board Conclusion:
This pollutant is being considered for removal from the CWA section 303(d) List under section 3.11 and 4.1 of the Listing Policy. Under section 4.1 a single line of evidence is necessary to assess listing status.
Under section 3.11 when all other listing factors do not result in the listing of a water segment, but information indicates non-attainment of standards, a water segment shall be evaluated to determine whether the weight of evidence demonstrates that water quality standard is not attained. If the weight of evidence indicates non-attainment, the water segment shall be placed on the CWA section 303(d) List.
The COMM beneficial use has not been designated to this waterbody. However, data were collected in this waterbody by the Surface Water Ambient Monitoring Program to monitor pollutants in fish tissue for the purpose of evaluating risks to human health from consumption. Additionally, this waterbody was planted with fish from CDFW in 2023.
Data were collected as recent as 2018 and 4 out of 4 samples exceed the allowable frequency based on table 3.1 of the Listing Policy.
The weight of evidence of the data and information indicate water quality standards are not attained.
Thirteen lines of evidence are available in the administrative record to assess this pollutant.
Four 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 removing this water segment-pollutant combination from the CWA section 303(d) List.
This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. Four of four fish tissue samples exceeded the modified OEHHA fish tissue guideline.
This exceeds the allowable frequency listed in Table 4.1 of the Listing Policy. 4. Pursuant to section 4.11 of the Listing Policy, no additional data and information are available indicating that standards are met.
Regional Board Decision Recommendation:
After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be removed from the section 303(d) list because applicable water quality standards for the pollutant are being exceeded.
State Board Review of Regional Board Conclusion and Recommendation:
State Board Decision Recommendation:
After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.
Listing Extent:
Line of Evidence (LOE) for Decision ID 164475, Dieldrin
Region 7
Wiest Lake
LOE ID:
46299
Pollutant:
Dieldrin
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:
1
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Warm Freshwater Habitat
Number of Samples:
1
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for DDT, Total. One composite (3 fish per composite) was generated from one species: channel catfish. Details of the compositing protocol can be found in the March 2009 report entitled: "Contaminants in Fish from California Lakes and Reservoirs: Technical Report on Year One of a Two-Year Screening Study" (SWAMP, 2009). Total DDT was calculated as the sum of 4,4'- and 2,4'- isomers of DDT, DDE, and DDD.
No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (Water Quality Control Plan, Colorado River Basin).
National Academy of Science guidelines (NAS 1972) establish a maximum total DDT concentration of 1000 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Data for this line of evidence for Wiest Lake was collected at 1 monitoring site [ Wiest Lake_BOG - 723PWT019]. Samples were collected from 1 location. Individual sample locations consisted of an area within a given waterbody from which fish tissue samples were collected. The number of sample locations per waterbody was based on the overall size of the waterbody (SWAMP, 2010). Specifics of individual sampling locations can be found in the supplemental report entitled "Cruise Report for the Surface Waters Ambient Monitoring Program (SWAMP) Bioaccumulation Screening Study in California Lakes and Reservoirs, Sampling Dates: June 2007- March 2008" (SWAMP, 2008).
Temporal Representation:
Data was collected on a single day 11/1/2007.
Environmental Conditions:
Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:
Samples were collected, processed, and analyzed in accordance with the methods described in Quality Assurance Project Plan "Screening Study of Bioaccumulation in California Lakes and Reservoirs." (SWAMP, 2002).
Line of Evidence (LOE) for Decision ID 170140, DDT (Dichlorodiphenyltrichloroethane)
Region 7
Wiest Lake
LOE ID:
126270
Pollutant:
Total DDT (sum of 4,4'- and 2,4'- isomers of DDT, DDE, and DDD)
LOE Subgroup:
Number of Exceedances:
1
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use support and results are as follows: 1 of 1 samples exceed the criterion for Dieldrin. One composite (3 fish per composite) was generated from one species: channel catfish. Details of the compositing protocol can be found in the March 2009 report entitled: "Contaminants in Fish from California Lakes and Reservoirs: Technical Report on Year One of a Two-Year Screening Study" (SWAMP, 2009).
No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (Water Quality Control Plan, Colorado River Basin).
The modified OEHHA Fish Contaminant Goal for dieldrin in fish tissue is 0.32 ppb. This screening level assumes an average body weight of 70 kg and a consumption rate of 32 g/day for a 30 year exposure over a 70-year lifetime. This constituent is a carcinogen therefore the risk level is set to one in a million. A cooking reduction factor of 1 is applied for skin-off fillets.
Data for this line of evidence for Wiest Lake was collected at 1 monitoring site [ Wiest Lake_BOG - 723PWT019]. Samples were collected from 1 location. Individual sample locations consisted of an area within a given waterbody from which fish tissue samples were collected. The number of sample locations per waterbody was based on the overall size of the waterbody (SWAMP, 2010). Specifics of individual sampling locations can be found in the supplemental report entitled "Cruise Report for the Surface Waters Ambient Monitoring Program (SWAMP) Bioaccumulation Screening Study in California Lakes and Reservoirs, Sampling Dates: June 2007- March 2008" (SWAMP, 2008).
Temporal Representation:
Data was collected on a single day 11/1/2007.
Environmental Conditions:
Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:
Samples were collected, processed, and analyzed in accordance with the methods described in Quality Assurance Project Plan "Screening Study of Bioaccumulation in California Lakes and Reservoirs." (SWAMP, 2002).
Line of Evidence (LOE) for Decision ID 164475, Dieldrin
Region 7
Wiest Lake
LOE ID:
46300
Pollutant:
Dieldrin
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Cold Freshwater Habitat
Number of Samples:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Warm Freshwater Habitat
Number of Samples:
4
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed RWB7 TMDL data for Wiest Lake to determine beneficial use support and the results are as follows 0 of the 4 samples exceeded the water quality standard for Total DDT (sum of 4,4'- and 2,4'- isomers of DDT, DDE, and DDD). Data were collected for 4 fish species (1 composite(s) of Largemouth Bass each composed of 1 fish per composite, 1 composite(s) of Black Crappie each composed of 5 fish per composite, 1 composite(s) of Common Carp each composed of 5 fish per composite, 1 composite(s) of Largemouth Bass each composed of 5 fish per composite).
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
National Academy of Science guidelines (NAS 1972) establish a maximum total DDT concentration of 1000 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Line of Evidence (LOE) for Decision ID 170140, DDT (Dichlorodiphenyltrichloroethane)
Region 7
Wiest Lake
LOE ID:
126634
Pollutant:
Total DDT (sum of 4,4'- and 2,4'- isomers of DDT, DDE, and DDD)
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Warm Freshwater Habitat
Number of Samples:
3
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP RWB7 Monitoring data for Wiest Lake to determine beneficial use support and the results are as follows 0 of the 3 samples exceeded the water quality standard for Total DDT (sum of 4,4'- and 2,4'- isomers of DDT, DDE, and DDD). Data were collected for 3 fish species (1 composite(s) of Channel Catfish each composed of 3 fish per composite, 1 composite(s) of Channel Catfish each composed of 9 fish per composite, 1 composite(s) of Striped Bass each composed of 3 fish per composite).
Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Dieldrin. One composite (3 fish per composite) was generated from one species: channel catfish. Details of the compositing protocol can be found in the March 2009 report entitled: "Contaminants in Fish from California Lakes and Reservoirs: Technical Report on Year One of a Two-Year Screening Study" (SWAMP, 2009).
No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (Water Quality Control Plan, Colorado River Basin).
National Academy of Science guidelines (NAS 1972) establish a maximum Dieldrin concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Data for this line of evidence for Wiest Lake was collected at 1 monitoring site [ Wiest Lake_BOG - 723PWT019]. Samples were collected from 1 location. Individual sample locations consisted of an area within a given waterbody from which fish tissue samples were collected. The number of sample locations per waterbody was based on the overall size of the waterbody (SWAMP, 2010). Specifics of individual sampling locations can be found in the supplemental report entitled "Cruise Report for the Surface Waters Ambient Monitoring Program (SWAMP) Bioaccumulation Screening Study in California Lakes and Reservoirs, Sampling Dates: June 2007- March 2008" (SWAMP, 2008).
Temporal Representation:
Data was collected on a single day 11/1/2007.
Environmental Conditions:
Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:
Samples were collected, processed, and analyzed in accordance with the methods described in Quality Assurance Project Plan "Screening Study of Bioaccumulation in California Lakes and Reservoirs." (SWAMP, 2002).
Line of Evidence (LOE) for Decision ID 164475, Dieldrin
Region 7
Wiest Lake
LOE ID:
46094
Pollutant:
Dieldrin
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Cold Freshwater Habitat
Number of Samples:
2
Number of Exceedances:
0
SWAMP Data:
SWAMP
Water Quality Objective/Criterion:
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
National Academy of Science guidelines (NAS 1972) establish a maximum total DDT concentration of 1000 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Line of Evidence (LOE) for Decision ID 170140, DDT (Dichlorodiphenyltrichloroethane)
Region 7
Wiest Lake
LOE ID:
46296
Pollutant:
Total DDT (sum of 4,4'- and 2,4'- isomers of DDT, DDE, and DDD)
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:
1
Number of Exceedances:
1
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use support and results are as follows: 1 of 1 samples exceed the criterion for DDT, Total. One composite (3 fish per composite) was generated from one species: channel catfish. Details of the compositing protocol can be found in the March 2009 report entitled: "Contaminants in Fish from California Lakes and Reservoirs: Technical Report on Year One of a Two-Year Screening Study" (SWAMP, 2009). Total DDT was calculated as the sum of 4,4'- and 2,4'- isomers of DDT, DDE, and DDD.
No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (Water Quality Control Plan, Colorado River Basin).
The modified OEHHA Fish Contaminant Goal for total DDT in fish tissue is 15 ppb. This screening level assumes an average body weight of 70 kg and a consumption rate of 32 g/day for a 30 year exposure over a 70-year lifetime. This constituent is a carcinogen therefore the risk level is set to one in a million. A cooking reduction factor of 1 is applied for skin-off fillets.
Data for this line of evidence for Wiest Lake was collected at 1 monitoring site [ Wiest Lake_BOG - 723PWT019]. Samples were collected from 1 location. Individual sample locations consisted of an area within a given waterbody from which fish tissue samples were collected. The number of sample locations per waterbody was based on the overall size of the waterbody (SWAMP, 2010). Specifics of individual sampling locations can be found in the supplemental report entitled "Cruise Report for the Surface Waters Ambient Monitoring Program (SWAMP) Bioaccumulation Screening Study in California Lakes and Reservoirs, Sampling Dates: June 2007- March 2008" (SWAMP, 2008).
Temporal Representation:
Data was collected on a single day 11/1/2007.
Environmental Conditions:
Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:
Samples were collected, processed, and analyzed in accordance with the methods described in Quality Assurance Project Plan "Screening Study of Bioaccumulation in California Lakes and Reservoirs." (SWAMP, 2002).
ft" valign="top" width="33%">Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for Dieldrin. Six composites were generated from two species: black crappie and channel catfish. Composites comprised of 3 - 4 fish for black crappie and 2 -3 fish for channel catfish. Composites collected at the same time on the same day for the same species were averaged in accordance with the listing policy.
No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (Water Quality Control Plan, Colorado River Basin).
National Academy of Science guidelines (NAS 1972) establish a maximum Dieldrin concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Line of Evidence (LOE) for Decision ID 164475, Dieldrin
Region 7
Wiest Lake
LOE ID:
126562
Pollutant:
Dieldrin
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Cold Freshwater Habitat
Number of Samples:
4
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed RWB7 TMDL data for Wiest Lake to determine beneficial use support and the results are as follows 0 of the 4 samples exceeded the water quality standard for Dieldrin. Data were collected for 4 fish species (1 composite(s) of Largemouth Bass each composed of 1 fish per composite, 1 composite(s) of Black Crappie each composed of 5 fish per composite, 1 composite(s) of Common Carp each composed of 5 fish per composite, 1 composite(s) of Largemouth Bass each composed of 5 fish per composite).
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
National Academy of Science guidelines (NAS 1972) establish a maximum Dieldrin concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Line of Evidence (LOE) for Decision ID 164475, Dieldrin
Region 7
Wiest Lake
LOE ID:
126167
Pollutant:
Dieldrin
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Cold Freshwater Habitat
Number of Samples:
1
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP RWB7 Monitoring data for Wiest Lake to determine beneficial use support and the results are as follows 0 of the 1 samples exceeded the water quality standard for Dieldrin. Data were collected for 1 fish species (1 composite(s) of Striped Bass each composed of 3 fish per composite).
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
National Academy of Science guidelines (NAS 1972) establish a maximum Dieldrin concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Line of Evidence (LOE) for Decision ID 164475, Dieldrin
DECISION ID
164475
Region 7
Wiest Lake
Pollutant:
Dieldrin
Final Listing Decision:
Do Not Delist from 303(d) list (being addressed with USEPA approved TMDL)
Last Listing Cycle's Final Listing Decision:
Do Not Delist from 303(d) list (TMDL required list)(2018)
Revision Status
Revised
Sources:
Agriculture
TMDL Name:
Imperial Valley Organochlorine Compounds and Organophosphate Pesticides TMDL
TMDL Project Code:
1289
Date TMDL Approved by USEPA:
03/19/2024
Impairment from Pollutant or Pollution:
Pollutant
Regional Board Conclusion:
This pollutant is being considered for removal from the CWA section 303(d) List under section 3.11 and 4.1 of the Listing Policy. Under section 4.1 a single line of evidence is necessary to assess listing status.
Under section 3.11 when all other listing factors do not result in the listing of a water segment, but information indicates non-attainment of standards, a water segment shall be evaluated to determine whether the weight of evidence demonstrates that water quality standard is not attained. If the weight of evidence indicates non-attainment, the water segment shall be placed on the CWA section 303(d) List.
The COMM beneficial use has not been designated to this waterbody. However, data were collected in this waterbody by the Surface Water Ambient Monitoring Program to monitor pollutants in fish tissue for the purpose of evaluating risks to human health from consumption. Additionally, this waterbody was planted with fish from CDFW in 2023.
Data were collected as recent as 2018 and 4 out of 4 samples exceed the allowable frequency based on table 3.1 of the Listing Policy.
The weight of evidence of the data and information indicate water quality standards are not attained.
Thirteen lines of evidence are available in the administrative record to assess this pollutant.
Four 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 removing this water segment-pollutant combination from the CWA section 303(d) List.
This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. Four of four fish tissue samples exceeded the modified OEHHA fish tissue guideline.
This exceeds the allowable frequency listed in Table 4.1 of the Listing Policy. 4. Pursuant to section 4.11 of the Listing Policy, no additional data and information are available indicating that standards are met.
Regional Board Decision Recommendation:
After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be removed from the section 303(d) list because applicable water quality standards for the pollutant are being exceeded.
State Board Review of Regional Board Conclusion and Recommendation:
State Board Decision Recommendation:
After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.
Listing Extent:
Line of Evidence (LOE) for Decision ID 164475, Dieldrin
Region 7
Wiest Lake
LOE ID:
46299
Pollutant:
Dieldrin
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:
1Region 7
Wiest Lake
LOE ID:
126228
Pollutant:
Dieldrin
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:
0
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Waterboard staff assessed SWAMP RWB7 Monitoring data for Wiest Lake to determine beneficial use support and the results are as follows: Zero of Zero samples exceeded the water quality standard for Dieldrin. Although data was collected for 1 fish species (1 composite(s) of Striped Bass each composed of 3 fish per composite), all 1 sample(s) had to be thrown out due to quantitation issues.
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
The modified OEHHA Fish Contaminant Goal for dieldrin in fish tissue is 0.32 ppb. This screening level assumes an average body weight of 70 kg and a consumption rate of 32 g/day for a 30 year exposure over a 70-year lifetime. This constituent is a carcinogen therefore the risk level is set to one in a million. A cooking reduction factor of 1 is applied for skin-off fillets. (Klasing, S., and R. Brodberg, 2008)
Line of Evidence (LOE) for Decision ID 164475, Dieldrin
Region 7
Wiest Lake
LOE ID:
5599
Pollutant:
Dieldrin
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Total
Beneficial Use:
Warm Freshwater Habitat
Number of Samples:
2
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Two fish fillet samples were taken at 1 location in the lake. The samples were generally collected in 10/1989 and 12/1999. Of these two samples, neither exceeded the NAd>
Number of Exceedances:
1
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use support and results are as follows: 1 of 1 samples exceed the criterion for Dieldrin. One composite (3 fish per composite) was generated from one species: channel catfish. Details of the compositing protocol can be found in the March 2009 report entitled: "Contaminants in Fish from California Lakes and Reservoirs: Technical Report on Year One of a Two-Year Screening Study" (SWAMP, 2009).
No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (Water Quality Control Plan, Colorado River Basin).
The modified OEHHA Fish Contaminant Goal for dieldrin in fish tissue is 0.32 ppb. This screening level assumes an average body weight of 70 kg and a consumption rate of 32 g/day for a 30 year exposure over a 70-year lifetime. This constituent is a carcinogen therefore the risk level is set to one in a million. A cooking reduction factor of 1 is applied for skin-off fillets.
Data for this line of evidence for Wiest Lake was collected at 1 monitoring site [ Wiest Lake_BOG - 723PWT019]. Samples were collected from 1 location. Individual sample locations consisted of an area within a given waterbody from which fish tissue samples were collected. The number of sample locations per waterbody was based on the overall size of the waterbody (SWAMP, 2010). Specifics of individual sampling locations can be found in the supplemental report entitled "Cruise Report for the Surface Waters Ambient Monitoring Program (SWAMP) Bioaccumulation Screening Study in California Lakes and Reservoirs, Sampling Dates: June 2007- March 2008" (SWAMP, 2008).
Temporal Representation:
Data was collected on a single day 11/1/2007.
Environmental Conditions:
Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:
Samples were collected, processed, and analyzed in accordance with the methods described in Quality Assurance Project Plan "Screening Study of Bioaccumulation in California Lakes and Reservoirs." (SWAMP, 2002).
Basin Plan: No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (CRBRWQCB, 2006).
Samples were collected from the interior of Wiest Lake.
Temporal Representation:
Two largemouth bass fillet composite samples were collected in 10/1989 and 12/1999.
Environmental Conditions:
QAPP Information:
The field procedures are described in TSMP Data Reports and associated Appendices. CDFG's Laboratory applies Quality Assurance Program Plan procedures for laboratory Quality Assurance and Quality Control, as described in Rasmussen (1993).
Line of Evidence (LOE) for Decision ID 164475, Dieldrin
Region 7
Wiest Lake
LOE ID:
46301
Pollutant:
Dieldrin
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Warm Freshwater Habitat
Number of Samples:
1
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Dieldrin. One composite (3 fish per composite) was generated from one species: channel catfish. Details of the compositing protocol can be found in the March 2009 report entitled: "Contaminants in Fish from California Lakes and Reservoirs: Technical Report on Year One of a Two-Year Screening Study" (SWAMP, 2009).
No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical="top" width="67%">1
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Dieldrin. One composite (3 fish per composite) was generated from one species: channel catfish. Details of the compositing protocol can be found in the March 2009 report entitled: "Contaminants in Fish from California Lakes and Reservoirs: Technical Report on Year One of a Two-Year Screening Study" (SWAMP, 2009).
No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (Water Quality Control Plan, Colorado River Basin).
National Academy of Science guidelines (NAS 1972) establish a maximum Dieldrin concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Data for this line of evidence for Wiest Lake was collected at 1 monitoring site [ Wiest Lake_BOG - 723PWT019]. Samples were collected from 1 location. Individual sample locations consisted of an area within a given waterbody from which fish tissue samples were collected. The number of sample locations per waterbody was based on the overall size of the waterbody (SWAMP, 2010). Specifics of individual sampling locations can be found in the supplemental report entitled "Cruise Report for the Surface Waters Ambient Monitoring Program (SWAMP) Bioaccumulation Screening Study in California Lakes and Reservoirs, Sampling Dates: June 2007- March 2008" (SWAMP, 2008).
Temporal Representation:
Data was collected on a single day 11/1/2007.
Environmental Conditions:
Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:
Samples were collected, processed, and analyzed in accordance with the methods described in Quality Assurance Project Plan "Screening Study of Bioaccumulation in California Lakes and Reservoirs." (SWAMP, 2002).
National Academy of Science guidelines (NAS 1972) establish a maximum Dieldrin concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Data for this line of evidence for Wiest Lake was collected at 1 monitoring site [ Wiest Lake_BOG - 723PWT019]. Samples were collected from 1 location. Individual sample locations consisted of an area within a given waterbody from which fish tissue samples were collected. The number of sample locations per waterbody was based on the overall size of the waterbody (SWAMP, 2010). Specifics of individual sampling locations can be found in the supplemental report entitled "Cruise Report for the Surface Waters Ambient Monitoring Program (SWAMP) Bioaccumulation Screening Study in California Lakes and Reservoirs, Sampling Dates: June 2007- March 2008" (SWAMP, 2008).
Temporal Representation:
Data was collected on a single day 11/1/2007.
Environmental Conditions:
Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:
Samples were collected, processed, and analyzed in accordance with the methods described in Quality Assurance Project Plan "Screening Study of Bioaccumulation in California Lakes and Reservoirs." (SWAMP, 2002).
Line of Evidence (LOE) for Decision ID 164475, Dieldrin
Region 7
Wiest Lake
LOE ID:
46095
Pollutant:
Dieldrin
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Warm Freshwater Habitat
Number of Samples:
2
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for Dieldrin. Six composites were generated from two species: black crappie and channel catfish. Composites comprised of 3 - 4 fish for black crappie and 2 -3 fish for channel catfish. Composites collected at the same time on the same day for the same species were averaged in accordance with the listing policy.
No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (Water Quality Control Plan, Colorado River Basin).
National Academy of Science guidelines (NAS 1972) establish a maximum Dieldrin concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Data for this line of evidence for Wiest Lake was collected at 1 monitoring site [ Wiest Lake - 723WIESLK]
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for Dieldrin. Six composites were generated from two species: black crappie and channel catfish. Composites comprised of 3 - 4 fish for black crappie and 2 -3 fish for channel catfish. Composites collected at the same time on the same day for the same species were averaged in accordance with the listing policy.
No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (Water Quality Control Plan, Colorado River Basin).
National Academy of Science guidelines (NAS 1972) establish a maximum Dieldrin concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Line of Evidence (LOE) for Decision ID 164475, Dieldrin
Region 7
Wiest Lake
LOE ID:
126562
Pollutant:
Dieldrin
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Cold Freshwater Habitat
Number of Samples:
4
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed RWB7 TMDL data for Wiest Lake to determine beneficial use support and the results are as follows 0 of the 4 samples exceeded the water quality standard for Dieldrin. Data were collected for 4 fish species (1 composite(s) of Largemouth Bass each composed of 1 fish per composite, 1 composite(s) of Black Crappie each composed of 5 fish per composite, 1 composite(s) of Common Carp each composed of 5 fish per composite, 1 composite(s) of Largemouth Bass each composed of 5 fish per composite).
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
National Academy of Science guidelines (NAS 1972) establish a maximum Dieldrin concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Line of Evidence (LOE) for Decision ID 164475, Dieldrin
Region 7
Wiest Lake
LOE ID:
126167
Pollutant:
Dieldrin
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Cold Freshwater Habitat
Number of Samples:
1
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP RWB7 Monitoring data for Wiest Lake to determine beneficial use support and the results are as follows 0 of the 1 samples exceeded the water quality standard for Dieldrin. Data were collected for 1 fish species (1 composite(s) of Striped Bass each composed of 3 fish per composite).
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
National Academy of Science guidelines (NAS 1972) establish a maximum Dieldrin concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Line of Evidence (LOE) for Decision ID 164475, Dieldrin
Region 7
Wiest Lake
LOE ID:
126229
Pollutant:
Dieldrin
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Warm Freshwater Habitat
Number of Samples:
1
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP RWB7 Monitoring data for Wiest Lake to determine beneficial use support and the results are as follows 0 of the 1 samples exceeded the water quality standard for Dieldrin. Data were collected for 1 fish species (1 composite(s) of Striped Bass each composed of 3 fish per composite).
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
National Academy of Science guidelines (NAS 1972) establish a maximum Dieldrin concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Line of Evidence (LOE) for Decision ID 164475, Dieldrin
Region 7
Wiest Lake
LOE ID:
126595
Pollutant:
Dieldrin
LOE Subgroup:
Pollutant-TissueRegion 7
Wiest Lake
LOE ID:
126228
Pollutant:
Dieldrin
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:
0
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Waterboard staff assessed SWAMP RWB7 Monitoring data for Wiest Lake to determine beneficial use support and the results are as follows: Zero of Zero samples exceeded the water quality standard for Dieldrin. Although data was collected for 1 fish species (1 composite(s) of Striped Bass each composed of 3 fish per composite), all 1 sample(s) had to be thrown out due to quantitation issues.
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
The modified OEHHA Fish Contaminant Goal for dieldrin in fish tissue is 0.32 ppb. This screening level assumes an average body weight of 70 kg and a consumption rate of 32 g/day for a 30 year exposure over a 70-year lifetime. This constituent is a carcinogen therefore the risk level is set to one in a million. A cooking reduction factor of 1 is applied for skin-off fillets. (Klasing, S., and R. Brodberg, 2008)
Line of Evidence (LOE) for Decision ID 164475, Dieldrin
Region 7
Wiest Lake
LOE ID:
5599
Pollutant:
Dieldrin
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Total
Beneficial Use:
Warm Freshwater Habitat
Number of Samples:
2
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Two fish fillet samples were taken at 1 location in the lake. The samples were generally collected in 10/1989 and 12/1999. Of these two samples, neither exceeded the NA>
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Warm Freshwater Habitat
Number of Samples:
4
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed RWB7 TMDL data for Wiest Lake to determine beneficial use support and the results are as follows 0 of the 4 samples exceeded the water quality standard for Dieldrin. Data were collected for 4 fish species (1 composite(s) of Largemouth Bass each composed of 1 fish per composite, 1 composite(s) of Black Crappie each composed of 5 fish per composite, 1 composite(s) of Common Carp each composed of 5 fish per composite, 1 composite(s) of Largemouth Bass each composed of 5 fish per composite).
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
National Academy of Science guidelines (NAS 1972) establish a maximum Dieldrin concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Line of Evidence (LOE) for Decision ID 164475, Dieldrin
Region 7
Wiest Lake
LOE ID:
46283
Pollutant:
Dieldrin
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:
2
Number of Exceedances:
2
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use support and results are as follows: 2 of 2 samples exceed the criterion for Dieldrin. Six composites were generated from two species: black crappie and channel catfish. Composites comprised of 3 - 4 fish for black crappie and 2 -3 fish for channel catfish. Composites collected at the same time on the same day for the same species were averaged in accordance with the listing policy.
Basin Plan: No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (CRBRWQCB, 2006).
Samples were collected from the interior of Wiest Lake.
Temporal Representation:
Two largemouth bass fillet composite samples were collected in 10/1989 and 12/1999.
Environmental Conditions:
QAPP Information:
The field procedures are described in TSMP Data Reports and associated Appendices. CDFG's Laboratory applies Quality Assurance Program Plan procedures for laboratory Quality Assurance and Quality Control, as described in Rasmussen (1993).
Line of Evidence (LOE) for Decision ID 164475, Dieldrin
Region 7
Wiest Lake
LOE ID:
46301
Pollutant:
Dieldrin
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Warm Freshwater Habitat
Number of Samples:
1
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Dieldrin. One composite (3 fish per composite) was generated from one species: channel catfish. Details of the compositing protocol can be found in the March 2009 report entitled: "Contaminants in Fish from California Lakes and Reservoirs: Technical Report on Year One of a Two-Year Screening Study" (SWAMP, 2009).
No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (Water Quality Control Plan, Colorado River Basin).
The modified OEHHA Fish Contaminant Goal for dieldrin in fish tissue is 0.32 ppb. This screening level assumes an average body weight of 70 kg and a consumption rate of 32 g/day for a 30 year exposure over a 70-year lifetime. This constituent is a carcinogen therefore the risk level is set to one in a million. A cooking reduction factor of 1 is applied for skin-off fillets.
Line of Evidence (LOE) for Decision ID 164475, Dieldrin
Region 7
Wiest Lake
LOE ID:
126253
Pollutant:
Dieldrin
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:
1
Number of Exceedances:
1
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed RWB7 TMDL data for Wiest Lake to determine beneficial use support and the results are as follows 1 of the 1 samples exceeded the water quality standard for Dieldrin. Data were collected for 4 fish species (1 composite(s) of Largemouth Bass each composed of 1 fish per composite, 1 composite(s) of Black Crappie each composed of 5 fish per composite, 1 composite(s) of Common Carp each composed of 5 fish per composite, 1 composite(s) of Largemouth Bass each composed of 5 fish per composite). Of these species, 1 species (Largemouth Bass) exceeded the evaluation guideline. Although a total of 4 samples were collected 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the objective and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
The modified OEHHA Fish Contaminant Goal for dieldrin in fish tissue is 0.32 ppb. This screening level assumes an average body weight of 70 kg and a consumption rate of 32 g/day for a 30 year exposure over a 70-year lifetime. This constituent is a carcinogen therefore the risk level is set to one in a million. A cooking reduction factor of 1 is applied for skin-off fillets. (Klasing, S., and R. Brodberg, 2008)
National Academy of Science guidelines (NAS 1972) establish a maximum Dieldrin concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Data for this line of evidence for Wiest Lake was collected at 1 monitoring site [ Wiest Lake_BOG - 723PWT019]. Samples were collected from 1 location. Individual sample locations consisted of an area within a given waterbody from which fish tissue samples were collected. The number of sample locations per waterbody was based on the overall size of the waterbody (SWAMP, 2010). Specifics of individual sampling locations can be found in the supplemental report entitled "Cruise Report for the Surface Waters Ambient Monitoring Program (SWAMP) Bioaccumulation Screening Study in California Lakes and Reservoirs, Sampling Dates: June 2007- March 2008" (SWAMP, 2008).
Temporal Representation:
Data was collected on a single day 11/1/2007.
Environmental Conditions:
Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:
Samples were collected, processed, and analyzed in accordance with the methods described in Quality Assurance Project Plan "Screening Study of Bioaccumulation in California Lakes and Reservoirs." (SWAMP, 2002).
Line of Evidence (LOE) for Decision ID 164475, Dieldrin
Region 7
Wiest Lake
LOE ID:
46095
Pollutant:
Dieldrin
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Warm Freshwater Habitat
Number of Samples:
2
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for Dieldrin. Six composites were generated from two species: black crappie and channel catfish. Composites comprised of 3 - 4 fish for black crappie and 2 -3 fish for channel catfish. Composites collected at the same time on the same day for the same species were averaged in accordance with the listing policy.
No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (Water Quality Control Plan, Colorado River Basin).
National Academy of Science guidelines (NAS 1972) establish a maximum Dieldrin concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Data for this line of evidence for Wiest Lake was collected at 1 monitoring site [ Wiest Lake - 723WIESLK]
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DECISION ID
164482
Region 7
Wiest Lake
Pollutant:
PCBs (Polychlorinated biphenyls)
Final Listing Decision:
Do Not Delist from 303(d) list (being addressed with USEPA approved TMDL)
Last Listing Cycle's Final Listing Decision:
Do Not Delist from 303(d) list (TMDL required list)(2018)
Revision Status
Revised
Sources:
Agriculture
TMDL Name:
Imperial Valley Organochlorine Compounds and Organophosphate Pesticides TMDL
TMDL Project Code:
1289
Date TMDL Approved by USEPA:
03/19/2024
Impairment from Pollutant or Pollution:
Pollutant
Regional Board Conclusion:
This pollutant is being considered for removal from the CWA section 303(d) List under section 3.11 and 4.1 of the Listing Policy. Under section 4.1, a single line of evidence is necessary to assess listing status.
Under section 3.11 when all other listing factors do not result in the listing of a water segment, but information indicates non-attainment of standards, a water segment shall be evaluated to determine whether the weight of evidence demonstrates that water quality standard is not attained. If the weight of evidence indicates non-attainment, the water segment shall be placed on the CWA section 303(d) List.
While there is not a specific health advisory for Wiest Lake, in 2022 OEHHA released Statewide Advisory for Eating Fish from California's Lakes and Reservoirs without Site-specific Advice for PCBs. Fishing occurs in Wiest Lake and the fish species common carp and largemouth bass used for the assessments are part of 2022 Advisory. Data were collected in this waterbody by the Surface Water Ambient Monitoring Program to monitor pollutants in fish tissue for the purpose of evaluating risks to human health from consumption as recent as 2018. Additionally, Weist Lake was planted by CDFW in 2023
The weight of evidence of the data and information indicate water quality standards are not attained.
Twelve lines of evidence are available in the administrative record to assess this pollutant. LOE No. 5444 is replaced by the LOE No. 46909, which is assessed based on the new evaluation guideline. Thus, LOE No. 5444 is not used in the final use rating.
Three out of five fish fillet and one out of 1 total fraction fish tissue 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 removing this water segment-pollutant combination from the CWA section 303(d) List.
This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. Three of five fish fillet and one of one total fraction fish tissue samples exceeded the modified OEHHA and this exceeds the allowable frequency listed in Table 4.1 of the Listing Policy. 4. Pursuant to section 4.11 of the Listing Policy, no additional data and information are available indicating that standards are met.
Regional Board Decision Recommendation:
After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be removed from the section 303(d) list because applicable water quality standards for the pollutant are being exceeded.
State Board Review of Regional Board Conclusion and Recommendation:
State Board Decision Recommendation:
After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.
Listing Extent:
Line of Evidence (LOE) for Decision ID 164482, PCBs (Polychlorinated biphenyls)
Region 7
Wiest Lake
LOE ID:
46239
Pollutant:
PCBs (Polychlorinated biphenyls)
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:Temporal Representation:
Data was collected on a single day 11/6/2004.
Environmental Conditions:
Staff is not aware of any special conditions that might affect interpretation of the data.
Line of Evidence (LOE) for Decision ID 164475, Dieldrin
Region 7
Wiest Lake
LOE ID:
126229
Pollutant:
Dieldrin
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Warm Freshwater Habitat
Number of Samples:
1
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP RWB7 Monitoring data for Wiest Lake to determine beneficial use support and the results are as follows 0 of the 1 samples exceeded the water quality standard for Dieldrin. Data were collected for 1 fish species (1 composite(s) of Striped Bass each composed of 3 fish per composite).
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
National Academy of Science guidelines (NAS 1972) establish a maximum Dieldrin concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Line of Evidence (LOE) for Decision ID 164475, Dieldrin
Region 7
Wiest Lake
LOE ID:
126595
Pollutant:
Dieldrin
LOE Subgroup:
Pollutant-Tissue
Fish fillet
Beneficial Use:
Cold Freshwater Habitat
Number of Samples:
2
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for PCB, Total. Six composites were generated from two species: black crappie and channel catfish. Composites comprised of 3 - 4 fish for black crappie and 2 -3 fish for channel catfish. Composites were averaged for species collected at the same time and location. Total PCB was assessed for as follows: PCB aroclors and congeners were summed separately and the sum that yielded the highest value was used for the assessment.
No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (Water Quality Control Plan, Colorado River Basin).
National Academy of Science guidelines (NAS 1972) establish a maximum total PCB concentration of 500 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Line of Evidence (LOE) for Decision ID 164482, PCBs (Polychlorinated biphenyls)
Region 7
Wiest Lake
LOE ID:
46320
Pollutant:
PCBs (Polychlorinated biphenyls)
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Cold Freshwater Habitat
Number of Samples:
1
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for PCB, Total. One composite (3 fish per composite) was generated from one species: channel catfish. Details of the compositing protocol can be found in the March 2009 report entitled: "Contaminants in Fish from California Lakes and Reservoirs: Technical Report on Year One of a Two-Year Screening Study" (SWAMP, 2009). Total PCB was assessed for as follows: PCB aroclors and congeners were summed separately and the sum that yielded the highest value was used for the assessment.
Water Board staff assessed RWB7 TMDL data for Wiest Lake to determine beneficial use support and the results are as follows 0 of the 4 samples exceeded the water quality standard for Dieldrin. Data were collected for 4 fish species (1 composite(s) of Largemouth Bass each composed of 1 fish per composite, 1 composite(s) of Black Crappie each composed of 5 fish per composite, 1 composite(s) of Common Carp each composed of 5 fish per composite, 1 composite(s) of Largemouth Bass each composed of 5 fish per composite).
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
National Academy of Science guidelines (NAS 1972) establish a maximum Dieldrin concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Line of Evidence (LOE) for Decision ID 164475, Dieldrin
Region 7
Wiest Lake
LOE ID:
46283
Pollutant:
Dieldrin
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:
2
Number of Exceedances:
2
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use support and results are as follows: 2 of 2 samples exceed the criterion for Dieldrin. Six composites were generated from two species: black crappie and channel catfish. Composites comprised of 3 - 4 fish for black crappie and 2 -3 fish for channel catfish. Composites collected at the same time on the same day for the same species were averaged in accordance with the listing policy.
No individual chemical or combination of chemicalov/water_issues/programs/tmdl/records/state_board/2010/ref3814.xlsx">Statewide Lakes Sportfish Contamination Study 2007 2008
No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (Water Quality Control Plan, Colorado River Basin).
National Academy of Science guidelines (NAS 1972) establish a maximum total PCB concentration of 500 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Data for this line of evidence for Wiest Lake was collected at 1 monitoring site [ Wiest Lake_BOG - 723PWT019]. Samples were collected from 1 location. Individual sample locations consisted of an area within a given waterbody from which fish tissue samples were collected. The number of sample locations per waterbody was based on the overall size of the waterbody (SWAMP, 2010). Specifics of individual sampling locations can be found in the supplemental report entitled "Cruise Report for the Surface Waters Ambient Monitoring Program (SWAMP) Bioaccumulation Screening Study in California Lakes and Reservoirs, Sampling Dates: June 2007- March 2008" (SWAMP, 2008).
Temporal Representation:
Data was collected on a single day 11/1/2007.
Environmental Conditions:
Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:
Samples were collected, processed, and analyzed in accordance with the methods described in Quality Assurance Project Plan "Screening Study of Bioaccumulation in California Lakes and Reservoirs." (SWAMP, 2002).
Line of Evidence (LOE) for Decision ID 164482, PCBs (Polychlorinated biphenyls)
Region 7
Wiest Lake
LOE ID:
126342
Pollutant:
PCBs (Polychlorinated biphenyls)
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Cold Freshwater Habitat
Number of Samples:
2
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed RWB7 TMDL data for Wiest Lake to determine beneficial use support and the results are as follows 0 of the 2 samples exceeded the water quality standard for PCBs (Polychlorinated biphenyls). Data were collected for 2 fish species (1 composite(s) of Common Carp each composed of 5 fish per composite, 1 composite(s) of Largemouth Bass each composed of 5 fish per composite).
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
National Academy of Science guidelines (NAS 1972) establish a maximum total PCB concentration of 500 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Line of Evidence (LOE) for Decision ID 164482, PCBs (Polychlorinated biphenyls)
Region 7
Wiest Lake
LOE ID:
126431
Pollutant:
PCBs (Polychlorinated biphenyls)
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:
2
Number of Exceedances:
1
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed RWB7 TMDL data for Wiest Lake to determine beneficial use support and the results are as follows 1 of the 2 samples exceeded the water quality standard for PCBs (Polychlorinated biphenyls). Data were collected for 2 fish species (1 composite(s) of Common Carp each composed of 5 fish per composite, 1 composite(s) of Largemouth Bass each composed of 5 fish per composite). Of these, 1 species (Common Carp) exceeded the water quality standard.
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
The modified OEHHA Fish Contaminant Goal for polychlorinated biphenyls in fish tissue is 2.6 ppb. This screening level assumes an average body weight of 70 kg and a consumption rate of 32 g/day for a 30 year exposure over a 70-year lifetime. This constituent is a carcinogen therefore the risk level is set to one in a million. A cooking reduction factor of 1 is applied for skin-off fillets. (Klasing, S., and R. Brodberg, 2008)
The modified OEHHA Fish Contaminant Goal for dieldrin in fish tissue is 0.32 ppb. This screening level assumes an average body weight of 70 kg and a consumption rate of 32 g/day for a 30 year exposure over a 70-year lifetime. This constituent is a carcinogen therefore the risk level is set to one in a million. A cooking reduction factor of 1 is applied for skin-off fillets.
Line of Evidence (LOE) for Decision ID 164475, Dieldrin
Region 7
Wiest Lake
LOE ID:
126253
Pollutant:
Dieldrin
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:
1
Number of Exceedances:
1
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed RWB7 TMDL data for Wiest Lake to determine beneficial use support and the results are as follows 1 of the 1 samples exceeded the water quality standard for Dieldrin. Data were collected for 4 fish species (1 composite(s) of Largemouth Bass each composed of 1 fish per composite, 1 composite(s) of Black Crappie each composed of 5 fish per composite, 1 composite(s) of Common Carp each composed of 5 fish per composite, 1 composite(s) of Largemouth Bass each composed of 5 fish per composite). Of these species, 1 species (Largemouth Bass) exceeded the evaluation guideline. Although a total of 4 samples were collected 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the objective and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
The modified OEHHA Fish Contaminant Goal for dieldrin in fish tissue is 0.32 ppb. This screening level assumes an average body weight of 70 kg and a consumption rate of 32 g/day for a 30 year exposure over a 70-year lifetime. This constituent is a carcinogen therefore the risk level is set to one in a million. A cooking reduction factor of 1 is applied for skin-off fillets. (Klasing, S., and R. Brodberg, 2008)
Line of Evidence (LOE) for Decision ID 164482, PCBs (Polychlorinated biphenyls)
Region 7
Wiest Lake
LOE ID:
46909
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:
1
Number of Exceedances:
1
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Two fish fillet samples were taken at 1 location in lake. One fish fillet sample result could not be used in this assessment because the sample results were non-detect and the detection limit was above the criteria concentrations. The 1 fish fillet sample that was acceptable was generally collected in 12/1999. Of these total samples, 1 sample collected at 1 location exceeded the OEHHA Fish Contaminant Goal. The exceedance was found in a largemouth bass fillet composite sample collected on 12/06/1999 (TSMP, 2007).
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life (Water Quality Control Plan, Colorado River Basin).
The modified OEHHA Fish Contaminant Goal for polychlorinated biphenyls in fish tissue is 2.6 ppb. This screening level assumes an average body weight of 70 kg and a consumption rate of 32 g/day for a 30 year exposure over a 70-year lifetime. This constituent is a carcinogen therefore the risk level is set to one in a million. A cooking reduction factor of 1 is applied.
Samples were collected from the interior of Wiest Lake.
Temporal Representation:
Two largemouth bass fillet composite samples were collected in 10/1989 and 12/1999. The exceedance was found in the sample collected on 12/06/1999.
Environmental Conditions:
QAPP Information:
Field procedures described in TSMP Data Reports and associated Appendices. Used CDFG's Laboratory Quality Assurance Program Plan procedures for laboratory Quality Assurance and Quality Control, as described in Rasmussen (1993).
Line of Evidence (LOE) for Decision ID 164482, PCBs (Polychlorinated biphenyls)
Region 7
Wiest Lake
DECISION ID
164482
Region 7
Wiest Lake
Pollutant:
PCBs (Polychlorinated biphenyls)
Final Listing Decision:
Do Not Delist from 303(d) list (being addressed with USEPA approved TMDL)
Last Listing Cycle's Final Listing Decision:
Do Not Delist from 303(d) list (TMDL required list)(2018)
Revision Status
Revised
Sources:
Agriculture
TMDL Name:
Imperial Valley Organochlorine Compounds and Organophosphate Pesticides TMDL
TMDL Project Code:
1289
Date TMDL Approved by USEPA:
03/19/2024
Impairment from Pollutant or Pollution:
Pollutant
Regional Board Conclusion:
This pollutant is being considered for removal from the CWA section 303(d) List under section 3.11 and 4.1 of the Listing Policy. Under section 4.1, a single line of evidence is necessary to assess listing status.
Under section 3.11 when all other listing factors do not result in the listing of a water segment, but information indicates non-attainment of standards, a water segment shall be evaluated to determine whether the weight of evidence demonstrates that water quality standard is not attained. If the weight of evidence indicates non-attainment, the water segment shall be placed on the CWA section 303(d) List.
While there is not a specific health advisory for Wiest Lake, in 2022 OEHHA released Statewide Advisory for Eating Fish from California's Lakes and Reservoirs without Site-specific Advice for PCBs. Fishing occurs in Wiest Lake and the fish species common carp and largemouth bass used for the assessments are part of 2022 Advisory. Data were collected in this waterbody by the Surface Water Ambient Monitoring Program to monitor pollutants in fish tissue for the purpose of evaluating risks to human health from consumption as recent as 2018. Additionally, Weist Lake was planted by CDFW in 2023
The weight of evidence of the data and information indicate water quality standards are not attained.
Twelve lines of evidence are available in the administrative record to assess this pollutant. LOE No. 5444 is replaced by the LOE No. 46909, which is assessed based on the new evaluation guideline. Thus, LOE No. 5444 is not used in the final use rating.
Three out of five fish fillet and one out of 1 total fraction fish tissue 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 removing this water segment-pollutant combination from the CWA section 303(d) List.
This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. Three of five fish fillet and one of one total fraction fish tissue samples exceeded the modified OEHHA and this exceeds the allowable frequency listed in Table 4.1 of the Listing Policy. 4. Pursuant to section 4.11 of the Listing Policy, no additional data and information are available indicating that standards are met.
Regional Board Decision Recommendation:
After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be removed from the section 303(d) list because applicable water quality standards for the pollutant are being exceeded.
State Board Review of Regional Board Conclusion and Recommendation:
State Board Decision Recommendation:
After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.
Listing Extent:
Line of Evidence (LOE) for Decision ID 164482, PCBs (Polychlorinated biphenyls)
Region 7
Wiest Lake
LOE ID:
46239
Pollutant:
PCBs (Polychlorinated biphenyls)
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
LOE ID:
5646
Pollutant:
PCBs (Polychlorinated biphenyls)
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Total
Beneficial Use:
Warm Freshwater Habitat
Number of Samples:
2
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Two fish fillet samples were taken at 1 location in the lake. The samples were generally collected in 10/1989 and 12/1999. Of these two samples, neither exceeded the NAS tissue guideline (TSMP, 2007).
Basin Plan: No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (CRBRWQCB, 2006).
Samples were collected from the interior of Wiest Lake.
Temporal Representation:
Two largemouth bass fillet composite samples were collected in 10/1989 and 12/1999.
Environmental Conditions:
QAPP Information:
The field procedures are described in TSMP Data Reports and associated Appendices. CDFG's Laboratory applies Quality Assurance Program Plan procedures for laboratory Quality Assurance and Quality Control, as described in Rasmussen (1993).
Line of Evidence (LOE) for Decision ID 164482, PCBs (Polychlorinated biphenyls)
Region 7
Wiest Lake
LOE ID:
126288
Pollutant:
PCBs (Polychlorinated biphenyls)
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Warm Freshwater Habitat
Number of Samples:
2
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed RWB7 TMDL data for Wiest Lake to determine beneficial use support and the results are as follows 0 of the 2 samples exceeded the water quality standard for PCBs (Polychlorinated biphenyls). Data were collected for 2 fish species (1 composite(s) of Common Carp each composed of 5 fish per composite, 1 composite(s) of Largemouth Bass each composed of 5 fish per composite).
Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for PCB, Total. Six composites were generated from two species: black crappie and channel catfish. Composites comprised of 3 - 4 fish for black crappie and 2 -3 fish for channel catfish. Composites were averaged for species collected at the same time and location. Total PCB was assessed for as follows: PCB aroclors and congeners were summed separately and the sum that yielded the highest value was used for the assessment.
No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (Water Quality Control Plan, Colorado River Basin).
National Academy of Science guidelines (NAS 1972) establish a maximum total PCB concentration of 500 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Line of Evidence (LOE) for Decision ID 164482, PCBs (Polychlorinated biphenyls)
Region 7
Wiest Lake
LOE ID:
46320
Pollutant:
PCBs (Polychlorinated biphenyls)
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Cold Freshwater Habitat
Number of Samples:
1
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for PCB, Total. One composite (3 fish per composite) was generated from one species: channel catfish. Details of the compositing protocol can be found in the March 2009 report entitled: "Contaminants in Fish from California Lakes and Reservoirs: Technical Report on Year One of a Two-Year Screening Study" (SWAMP, 2009). Total PCB was assessed for as follows: PCB aroclors and congeners were summed separately and the sum that yielded the highest value was used for the assessment.
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
National Academy of Science guidelines (NAS 1972) establish a maximum total PCB concentration of 500 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Line of Evidence (LOE) for Decision ID 164482, PCBs (Polychlorinated biphenyls)
Region 7
Wiest Lake
LOE ID:
46329
Pollutant:
PCBs (Polychlorinated biphenyls)
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Warm Freshwater Habitat
Number of Samples:
1
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for PCB, Total. One composite (3 fish per composite) was generated from one species: channel catfish. Details of the compositing protocol can be found in the March 2009 report entitled: "Contaminants in Fish from California Lakes and Reservoirs: Technical Report on Year One of a Two-Year Screening Study" (SWAMP, 2009). Total PCB was assessed for as follows: PCB aroclors and congeners were summed separately and the sum that yielded the highest value was used for the assessment.
No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (Water Quality Control Plan, Colorado River Basin).
No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (Water Quality Control Plan, Colorado River Basin).
National Academy of Science guidelines (NAS 1972) establish a maximum total PCB concentration of 500 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Data for this line of evidence for Wiest Lake was collected at 1 monitoring site [ Wiest Lake_BOG - 723PWT019]. Samples were collected from 1 location. Individual sample locations consisted of an area within a given waterbody from which fish tissue samples were collected. The number of sample locations per waterbody was based on the overall size of the waterbody (SWAMP, 2010). Specifics of individual sampling locations can be found in the supplemental report entitled "Cruise Report for the Surface Waters Ambient Monitoring Program (SWAMP) Bioaccumulation Screening Study in California Lakes and Reservoirs, Sampling Dates: June 2007- March 2008" (SWAMP, 2008).
Temporal Representation:
Data was collected on a single day 11/1/2007.
Environmental Conditions:
Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:
Samples were collected, processed, and analyzed in accordance with the methods described in Quality Assurance Project Plan "Screening Study of Bioaccumulation in California Lakes and Reservoirs." (SWAMP, 2002).
Line of Evidence (LOE) for Decision ID 164482, PCBs (Polychlorinated biphenyls)
Region 7
Wiest Lake
LOE ID:
126342
Pollutant:
PCBs (Polychlorinated biphenyls)
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Cold Freshwater Habitat
Number of Samples:
2
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed RWB7 TMDL data for Wiest Lake to determine beneficial use support and the results are as follows 0 of the 2 samples exceeded the water quality standard for PCBs (Polychlorinated biphenyls). Data were collected for 2 fish species (1 composite(s) of Common Carp each composed of 5 fish per composite, 1 composite(s) of Largemouth Bass each composed of 5 fish per composite).
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
National Academy of Science guidelines (NAS 1972) establish a maximum total PCB concentration of 500 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Line of Evidence (LOE) for Decision ID 164482, PCBs (Polychlorinated biphenyls)
Region 7
Wiest Lake
LOE ID:
126431
Pollutant:
PCBs (Polychlorinated biphenyls)
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:
2
Number of Exceedances:
1
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed RWB7 TMDL data for Wiest Lake to determine beneficial use support and the results are as follows 1 of the 2 samples exceeded the water quality standard for PCBs (Polychlorinated biphenyls). Data were collected for 2 fish species (1 composite(s) of Common Carp each composed of 5 fish per composite, 1 composite(s) of Largemouth Bass each composed of 5 fish per composite). Of these, 1 species (Common Carp) exceeded the water quality standard.
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
The modified OEHHA Fish Contaminant Goal for polychlorinated biphenyls in fish tissue is 2.6 ppb. This screening level assumes an average body weight of 70 kg and a consumption rate of 32 g/day for a 30 year exposure over a 70-year lifetime. This constituent is a carcinogen therefore the risk level is set to one in a million. A cooking reduction factor of 1 is applied for skin-off fillets. (Klasing, S., and R. Brodberg, 2008)
Data was collected from 1 station(s) with the station code(s): 723PWT019.
Temporal Representation:
Data for this line of evidence were collected between 2016-03-01 and 2016-03-01
Environmental Conditions:
Evaluation Guideline:
National Academy of Science guidelines (NAS 1972) establish a maximum total PCB concentration of 500 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Data for this line of evidence for Wiest Lake was collected at 1 monitoring site [ Wiest Lake_BOG - 723PWT019]. Samples were collected from 1 location. Individual sample locations consisted of an area within a given waterbody from which fish tissue samples were collected. The number of sample locations per waterbody was based on the overall size of the waterbody (SWAMP, 2010). Specifics of individual sampling locations can be found in the supplemental report entitled "Cruise Report for the Surface Waters Ambient Monitoring Program (SWAMP) Bioaccumulation Screening Study in California Lakes and Reservoirs, Sampling Dates: June 2007- March 2008" (SWAMP, 2008).
Temporal Representation:
Data was collected on a single day 11/1/2007.
Environmental Conditions:
Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:
Samples were collected, processed, and analyzed in accordance with the methods described in Quality Assurance Project Plan "Screening Study of Bioaccumulation in California Lakes and Reservoirs." (SWAMP, 2002).
Line of Evidence (LOE) for Decision ID 164482, PCBs (Polychlorinated biphenyls)
Region 7
Wiest Lake
LOE ID:
46240
Pollutant:
PCBs (Polychlorinated biphenyls)
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Warm Freshwater Habitat
Number of Samples:
2
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for PCB, Total. Six composites were generated from two species: black crappie and channel catfish. Composites comprised of 3 - 4 fish for black crappie and 2 -3 fish for channel catfish. Composites were averaged for species collected at the same time and location. Total PCB was assessed for as follows: PCB aroclors and congeners were summed separately and the sum that yielded the highest value was used for the assessment.
No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (Water Quality Control Plan, Colorado River Basin).
National Academy of Science guidelines (NAS 1972) establish a maximum total PCB concentration of 500 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Line of Evidence (LOE) for Decision ID 164482, PCBs (Polychlorinated biphenyls)
Region 7
Wiest Lake
LOE ID:
46319
Pollutant:
PCBs (Polychlorinated biphenyls)
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:
1
Number of Exceedances:
1
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use support and results are as follows: 1 of 1 samples exceed the criterion for PCB, Total. One composite (3 fish per composite) was generated from one species: channel catfish. Details of the compositing protocol can be found in the March 2009 report entitled: "Contaminants in Fish from California Lakes and Reservoirs: Technical Report on Year One of a Two-Year Screening Study" (SWAMP, 2009). Total PCB was assessed for as follows: PCB aroclors and congeners were summed separately and the sum that yielded the highest value was used for the assessment.
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life (Water Quality Control Plan, Colorado River Basin).
The modified OEHHA Fish Contaminant Goal for polychlorinated biphenyls in fish tissue is 2.6 ppb. This screening level assumes an average body weight of 70 kg and a consumption rate of 32 g/day for a 30 year exposure over a 70-year lifetime. This constituent is a carcinogen therefore the risk level is set to one in a million. A cooking reduction factor of 1 is applied for skin-off fillets.
Data for this line of evidence for Wiest Lake was collected at 1 monitoring site [ Wiest Lake_BOG - 723PWT019]. Samples were collected from 1 location. Individual sample locations consisted of an area within a given waterbody from which fish tissue samples were collected. The number of sample locations per waterbody was based on the overall size of the waterbody (SWAMP, 2010). Specifics of individual sampling locations can be found in the supplemental report entitled "Cruise Report for the Surface Waters Ambient Monitoring Program (SWAMP) Bioaccumulation Screening Study in California Lakes and Reservoirs, Sampling Dates: June 2007- March 2008" (SWAMP, 2008).
Temporal Representation:
Data was collected on a single day 11/1/2007.QAPP Information:
Quality Assurance Program Plan and Standard Operating Procedures for SWAMP program
Line of Evidence (LOE) for Decision ID 164482, PCBs (Polychlorinated biphenyls)
Region 7
Wiest Lake
LOE ID:
46909
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:
1
Number of Exceedances:
1
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Two fish fillet samples were taken at 1 location in lake. One fish fillet sample result could not be used in this assessment because the sample results were non-detect and the detection limit was above the criteria concentrations. The 1 fish fillet sample that was acceptable was generally collected in 12/1999. Of these total samples, 1 sample collected at 1 location exceeded the OEHHA Fish Contaminant Goal. The exceedance was found in a largemouth bass fillet composite sample collected on 12/06/1999 (TSMP, 2007).
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life (Water Quality Control Plan, Colorado River Basin).
The modified OEHHA Fish Contaminant Goal for polychlorinated biphenyls in fish tissue is 2.6 ppb. This screening level assumes an average body weight of 70 kg and a consumption rate of 32 g/day for a 30 year exposure over a 70-year lifetime. This constituent is a carcinogen therefore the risk level is set to one in a million. A cooking reduction factor of 1 is applied.
Samples were collected from the interior of Wiest Lake.
Temporal Representation:
Two largemouth bass fillet composite samples were collected in 10/1989 and 12/1999. The exceedance was found in the sample collected on 12/06/1999.
Environmental Conditions:
QAPP Information:
Field procedures described in TSMP Data Reports and associated Appendices. Used CDFG's Laboratory Quality Assurance Program Plan procedures for laboratory Quality Assurance and Quality Control, as described in Rasmussen (1993).
Line of Evidence (LOE) for Decision ID 164482, PCBs (Polychlorinated biphenyls)
Region 7
Wiest Lake
LOE ID:
5646
Pollutant:
PCBs (Polychlorinated biphenyls)
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Total
Beneficial Use:
Warm Freshwater Habitat
Number of Samples:
2
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Two fish fillet samples were taken at 1 location in the lake. The samples were generally collected in 10/1989 and 12/1999. Of these two samples, neither exceeded the NAS tissue guideline (TSMP, 2007).
Basin Plan: No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (CRBRWQCB, 2006).
Samples were collected from the interior of Wiest Lake.
Temporal Representation:
Two largemouth bass fillet composite samples were collected in 10/1989 and 12/1999.
Environmental Conditions:
QAPP Information:
The field procedures are described in TSMP Data Reports and associated Appendices. CDFG's Laboratory applies Quality Assurance Program Plan procedures for laboratory Quality Assurance and Quality Control, as described in Rasmussen (1993).
Line of Evidence (LOE) for Decision ID 164482, PCBs (Polychlorinated biphenyls)
Region 7
Wiest Lake
LOE ID:
126288
Pollutant:
PCBs (Polychlorinated biphenyls)
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Warm Freshwater Habitat
Number of Samples:
2
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed RWB7 TMDL data for Wiest Lake to determine beneficial use support and the results are as follows 0 of the 2 samples exceeded the water quality standard for PCBs (Polychlorinated biphenyls). Data were collected for 2 fish species (1 composite(s) of Common Carp each composed of 5 fish per composite, 1 composite(s) of Largemouth Bass each composed of 5 fish per composite).
Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:
Samples were collected, processed, and analyzed in accordance with the methods described in Quality Assurance Project Plan "Screening Study of Bioaccumulation in California Lakes and Reservoirs." (SWAMP, 2002).
Line of Evidence (LOE) for Decision ID 164482, PCBs (Polychlorinated biphenyls)
Region 7
Wiest Lake
LOE ID:
46227
Pollutant:
PCBs (Polychlorinated biphenyls)
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:
2
Number of Exceedances:
1
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use support and results are as follows: 1 of 2 samples exceed the criterion for PCB, Total. Six composites were generated from two species: black crappie and channel catfish. Composites were averaged for species collected at the same time and location. Composites comprised of 2-3 fish for channel catfish and 1 fish for Tilapia spp. and flathead catfish.Composites comprised of 3 - 4 fish for black crappie and 2 -3 fish for channel catfish. Total PCB was assessed for as follows: PCB aroclors and congeners were summed separately and the sum that yielded the highest value was used for the assessment.
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life (Water Quality Control Plan, Colorado River Basin).
The modified OEHHA Fish Contaminant Goal for polychlorinated biphenyls in fish tissue is 2.6 ppb. This screening level assumes an average body weight of 70 kg and a consumption rate of 32 g/day for a 30 year exposure over a 70-year lifetime. This constituent is a carcinogen therefore the risk level is set to one in a million. A cooking reduction factor of 1 is applied for skin-off fillets.
Line of Evidence (LOE) for Decision ID 164482, PCBs (Polychlorinated biphenyls)
Region 7
Wiest Lake
LOE ID:
5444
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:
1
Number of Exceedances:
1
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Two fish fillet samples were taken at 1 location in lake. One fish fillet sample result could not be used in this assessment because the sample results were non-detect and the detection limit was above the criteria concentrations. The 1 fish fillet sample that was acceptable was generally collected in 12/1999. Of these total samples, 1 sample collected at 1 location exceeded the OEHHA Fish Contaminant Goal. The exceedance was found in a largemouth bass fillet composite sample collected on 12/06/1999 (TSMP, 2007).
Basin Plan: No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (CRBRWQCB, 2006).
Samples were collected from the interior of Wiest Lake.
Temporal Representation:
Two largemouth bass fillet composite samples were collected in 10/1989 and 12/1999. The exceedance was found in the sample collected on 12/06/1999.
Environmental Conditions:
QAPP Information:
Field procedures described in TSMP Data Reports and associated Appendices. Used CDFG's Laboratory Quality Assurance Program Plan procedures for laboratory Quality Assurance and Quality Control, as described in Rasmussen (1993).
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
National Academy of Science guidelines (NAS 1972) establish a maximum total PCB concentration of 500 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Line of Evidence (LOE) for Decision ID 164482, PCBs (Polychlorinated biphenyls)
Region 7
Wiest Lake
LOE ID:
46329
Pollutant:
PCBs (Polychlorinated biphenyls)
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Warm Freshwater Habitat
Number of Samples:
1
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for PCB, Total. One composite (3 fish per composite) was generated from one species: channel catfish. Details of the compositing protocol can be found in the March 2009 report entitled: "Contaminants in Fish from California Lakes and Reservoirs: Technical Report on Year One of a Two-Year Screening Study" (SWAMP, 2009). Total PCB was assessed for as follows: PCB aroclors and congeners were summed separately and the sum that yielded the highest value was used for the assessment.
No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (Water Quality Control Plan, Colorado River Basin).
National Academy of Science guidelines (NAS 1972) establish a maximum total PCB concentration of 500 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Data for this line of evidence for Wiest Lake was collected at 1 monitoring site [ Wiest Lake_BOG - 723PWT019]. Samples were collected from 1 location. Individual sample locations consisted of an area within a given waterbody from which fish tissue samples were collected. The number of sample locations per waterbody was based on the overall size of the waterbody (SWAMP, 2010). Specifics of individual sampling locations can be found in the supplemental report entitled "Cruise Report for the Surface Waters Ambient Monitoring Program (SWAMP) Bioaccumulation Screening Study in California Lakes and Reservoirs, Sampling Dates: June 2007- March 2008" (SWAMP, 2008).
Temporal Representation:
Data was collected on a single day 11/1/2007.
Environmental Conditions:
Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:
Samples were collected, processed, and analyzed in accordance with the methods described in Quality Assurance Project Plan "Screening Study of Bioaccumulation in California Lakes and Reservoirs." (SWAMP, 2002).
Line of Evidence (LOE) for Decision ID 164482, PCBs (Polychlorinated biphenyls)
Region 7
Wiest Lake
LOE ID:
46240
Pollutant:
PCBs (Polychlorinated biphenyls)
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Warm Freshwater Habitat
Number of Samples:
2
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for PCB, Total. Six composites were generated from two species: black crappie and channel catfish. Composites comprised of 3 - 4 fish for black crappie and 2 -3 fish for channel catfish. Composites were averaged for species collected at the same time and location. Total PCB was assessed for as follows: PCB aroclors and congeners were summed separately and the sum that yielded the highest value was used for the assessment.
No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (Water Quality Control Plan, Colorado River Basin).
National Academy of Science guidelines (NAS 1972) establish a maximum total PCB concentration of 500 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Line of Evidence (LOE) for Decision ID 164482, PCBs (Polychlorinated biphenyls)
Region 7
Wiest Lake
LOE ID:
46319
Pollutant:
PCBs (Polychlorinated biphenyls)
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:
1
Number of Exceedances:
1
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use support and results are as follows: 1 of 1 samples exceed the criterion for PCB, Total. One composite (3 fish per composite) was generated from one species: channel catfish. Details of the compositing protocol can be found in the March 2009 report entitled: "Contaminants in Fish from California Lakes and Reservoirs: Technical Report on Year One of a Two-Year Screening Study" (SWAMP, 2009). Total PCB was assessed for as follows: PCB aroclors and congeners were summed separately and the sum that yielded the highest value was used for the assessment.
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life (Water Quality Control Plan, Colorado River Basin).
The modified OEHHA Fish Contaminant Goal for polychlorinated biphenyls in fish tissue is 2.6 ppb. This screening level assumes an average body weight of 70 kg and a consumption rate of 32 g/day for a 30 year exposure over a 70-year lifetime. This constituent is a carcinogen therefore the risk level is set to one in a million. A cooking reduction factor of 1 is applied for skin-off fillets.
Data for this line of evidence for Wiest Lake was collected at 1 monitoring site [ Wiest Lake_BOG - 723PWT019]. Samples were collected from 1 location. Individual sample locations consisted of an area within a given waterbody from which fish tissue samples were collected. The number of sample locations per waterbody was based on the overall size of the waterbody (SWAMP, 2010). Specifics of individual sampling locations can be found in the supplemental report entitled "Cruise Report for the Surface Waters Ambient Monitoring Program (SWAMP) Bioaccumulation Screening Study in California Lakes and Reservoirs, Sampling Dates: June 2007- March 2008" (SWAMP, 2008).
Temporal Representation:
Data was collected on a single day 11/1/2007.
Environmental Conditions:
Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:
Samples were collected, processed, and analyzed in accordance with the methods described in Quality Assurance Project Plan "Screening Study of Bioaccumulation in California Lakes and Reservoirs." (SWAMP, 2002).
Line of Evidence (LOE) for Decision ID 164482, PCBs (Polychlorinated biphenyls)
Region 7
Wiest Lake
LOE ID:
46227
Pollutant:
PCBs (Polychlorinated biphenyls)
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:
2
Number of Exceedances:
1
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use support and results are as follows: 1 of 2 samples exceed the criterion for PCB, Total. Six composites were generated from two species: black crappie and channel catfish. Composites were averaged for species collected at the same time and location. Composites comprised of 2-3 fish for channel catfish and 1 fish for Tilapia spp. and flathead catfish.Composites comprised of 3 - 4 fish for black crappie and 2 -3 fish for channel catfish. Total PCB was assessed for as follows: PCB aroclors and congeners were summed separately and the sum that yielded the highest value was used for the assessment.
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life (Water Quality Control Plan, Colorado River Basin).
The modified OEHHA Fish Contaminant Goal for polychlorinated biphenyls in fish tissue is 2.6 ppb. This screening level assumes an average body weight of 70 kg and a consumption rate of 32 g/day for a 30 year exposure over a 70-year lifetime. This constituent is a carcinogen therefore the risk level is set to one in a million. A cooking reduction factor of 1 is applied for skin-off fillets.
Line of Evidence (LOE) for Decision ID 164482, PCBs (Polychlorinated biphenyls)
Region 7
Wiest Lake
LOE ID:
5444
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:
1
Number of Exceedances:
1
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Two fish fillet samples were taken at 1 location in lake. One fish fillet sample result could not be used in this assessment because the sample results were non-detect and the detection limit was above the criteria concentrations. The 1 fish fillet sample that was acceptable was generally collected in 12/1999. Of these total samples, 1 sample collected at 1 location exceeded the OEHHA Fish Contaminant Goal. The exceedance was found in a largemouth bass fillet composite sample collected on 12/06/1999 (TSMP, 2007).
Basin Plan: No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (CRBRWQCB, 2006).
Samples were collected from the interior of Wiest Lake.
Temporal Representation:
Two largemouth bass fillet composite samples were collected in 10/1989 and 12/1999. The exceedance was found in the sample collected on 12/06/1999.
Environmental Conditions:
QAPP Information:
Field procedures described in TSMP Data Reports and associated Appendices. Used CDFG's Laboratory Quality Assurance Program Plan procedures for laboratory Quality Assurance and Quality Control, as described in Rasmussen (1993).
Do Not List on 303(d) list (TMDL required list)(2016)
Revision Status
Revised
Impairment from Pollutant or Pollution:
Pollutant
Regional Board Conclusion:
This pollutant is being considered for placement on the section 303(d) list under section 3.5 of the Listing Policy. Under section 3.5 a single line of evidence is necessary to assess listing status.
Nine lines of evidence are available in the administrative record to assess this pollutant.
None of the samples exceed the water quality objectives.
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 ten fish fillet fraction and none of two total fraction fish tissue samples exceeded the NAS fish tissue guideline and the sample sizes are insufficient to determine with the power and confidence of the Listing Policy if standards are not met. A minimum of 16 samples is needed for application of table 3.1.
4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.
Regional Board Decision Recommendation:
After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
State Board Review of Regional Board Conclusion and Recommendation:
State Board Decision Recommendation:
Listing Extent:
Line of Evidence (LOE) for Decision ID 70055, Aldrin
Region 7
Wiest Lake
LOE ID:
46238
Pollutant:
Aldrin
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Cold Freshwater Habitat
Number of Samples:
2
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for Aldrin. Six composites were generated from two species: black crappie and channel catfish. Composites comprised of 3 - 4 fish for black crappie and 2 -3 fish for channel catfish. Composites collected at the same time on the same day for the same species were averaged in accordance with the listing policy.
No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (Water Quality Control Plan, Colorado River Basin).
National Academy of Science guidelines (NAS 1972) establish a maximum Aldrin concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Line of Evidence (LOE) for Decision ID 70055, Aldrin
Region 7
Wiest Lake
LOE ID:
5572
Pollutant:
Aldrin
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Total
Beneficial Use:
Warm Freshwater Habitat
Number of Samples:
2
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Two fish fillet samples were taken at 1 location in the lake. The samples were generally collected in 10/1989 and 12/1999. Of these two samples, neither exceeded the NAS tissue guideline (TSMP, 2007).
Basin Plan: No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (CRBRWQCB, 2006).
Samples were collected from the interior of Wiest Lake.
Temporal Representation:
Two largemouth bass fillet composite samples were collected in 10/1989 and 12/1999.
Environmental Conditions:
QAPP Information:
The field procedures are described in TSMP Data Reports and associated Appendices. CDFG's Laboratory applies Quality Assurance Program Plan procedures for laboratory Quality Assurance and Quality Control, as described in Rasmussen (1993).
Line of Evidence (LOE) for Decision ID 70055, Aldrin
Region 7
Wiest Lake
LOE ID:
126237
Pollutant:
Aldrin
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Cold Freshwater Habitat
Number of Samples:
3
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP RWB7 Monitoring data for Wiest Lake to determine beneficial use support and the results are as follows 0 of the 3 samples exceeded the water quality standard for Aldrin. Data were collected for 3 fish species (1 composite(s) of Channel Catfish each composed of 3 fish per composite, 1 composite(s) of Channel Catfish each composed of 9 fish per composite, 1 composite(s) of Striped Bass each composed of 3 fish per composite).
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
National Academy of Science guidelines (NAS 1972) establish a maximum Aldrin concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Line of Evidence (LOE) for Decision ID 70055, Aldrin
Region 7
Wiest Lake
LOE ID:
126464
Pollutant:
Aldrin
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Cold Freshwater Habitat
Number of Samples:
4
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed RWB7 TMDL data for Wiest Lake to determine beneficial use support and the results are as follows 0 of the 4 samples exceeded the water quality standard for Aldrin. Data were collected for 4 fish species (1 composite(s) of Largemouth Bass each composed of 1 fish per composite, 1 composite(s) of Black Crappie each composed of 5 fish per composite, 1 composite(s) of Common Carp each composed of 5 fish per composite, 1 composite(s) of Largemouth Bass each composed of 5 fish per composite).
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
National Academy of Science guidelines (NAS 1972) establish a maximum Aldrin concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Line of Evidence (LOE) for Decision ID 70055, Aldrin
Region 7
Wiest Lake
LOE ID:
46251
Pollutant:
Aldrin
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Warm Freshwater Habitat
Number of Samples:
2
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for Aldrin. Six composites were generated from two species: black crappie and channel catfish. Composites comprised of 3 - 4 fish for black crappie and 2 -3 fish for channel catfish. Composites collected at the same time on the same day for the same species were averaged in accordance with the listing policy.
No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (Water Quality Control Plan, Colorado River Basin).
National Academy of Science guidelines (NAS 1972) establish a maximum Aldrin concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Line of Evidence (LOE) for Decision ID 70055, Aldrin
Region 7
Wiest Lake
LOE ID:
46292
Pollutant:
Aldrin
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Warm Freshwater Habitat
Number of Samples:
1
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Aldrin. One composite (3 fish per composite) was generated from one species: channel catfish. Details of the compositing protocol can be found in the March 2009 report entitled: "Contaminants in Fish from California Lakes and Reservoirs: Technical Report on Year One of a Two-Year Screening Study" (SWAMP, 2009).
No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (Water Quality Control Plan, Colorado River Basin).
National Academy of Science guidelines (NAS 1972) establish a maximum Aldrin concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Data for this line of evidence for Wiest Lake was collected at 1 monitoring site [ Wiest Lake_BOG - 723PWT019]. Samples were collected from 1 location. Individual sample locations consisted of an area within a given waterbody from which fish tissue samples were collected. The number of sample locations per waterbody was based on the overall size of the waterbody (SWAMP, 2010). Specifics of individual sampling locations can be found in the supplemental report entitled "Cruise Report for the Surface Waters Ambient Monitoring Program (SWAMP) Bioaccumulation Screening Study in California Lakes and Reservoirs, Sampling Dates: June 2007- March 2008" (SWAMP, 2008).
Temporal Representation:
Data was collected on a single day 11/1/2007.
Environmental Conditions:
Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:
Samples were collected, processed, and analyzed in accordance with the methods described in Quality Assurance Project Plan "Screening Study of Bioaccumulation in California Lakes and Reservoirs." (SWAMP, 2002).
Line of Evidence (LOE) for Decision ID 70055, Aldrin
Region 7
Wiest Lake
LOE ID:
46291
Pollutant:
Aldrin
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Cold Freshwater Habitat
Number of Samples:
1
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Aldrin. One composite (3 fish per composite) was generated from one species: channel catfish. Details of the compositing protocol can be found in the March 2009 report entitled: "Contaminants in Fish from California Lakes and Reservoirs: Technical Report on Year One of a Two-Year Screening Study" (SWAMP, 2009).
No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (Water Quality Control Plan, Colorado River Basin).
National Academy of Science guidelines (NAS 1972) establish a maximum Aldrin concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Data for this line of evidence for Wiest Lake was collected at 1 monitoring site [ Wiest Lake_BOG - 723PWT019]. Samples were collected from 1 location. Individual sample locations consisted of an area within a given waterbody from which fish tissue samples were collected. The number of sample locations per waterbody was based on the overall size of the waterbody (SWAMP, 2010). Specifics of individual sampling locations can be found in the supplemental report entitled "Cruise Report for the Surface Waters Ambient Monitoring Program (SWAMP) Bioaccumulation Screening Study in California Lakes and Reservoirs, Sampling Dates: June 2007- March 2008" (SWAMP, 2008).
Temporal Representation:
Data was collected on a single day 11/1/2007.
Environmental Conditions:
Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:
Samples were collected, processed, and analyzed in accordance with the methods described in Quality Assurance Project Plan "Screening Study of Bioaccumulation in California Lakes and Reservoirs." (SWAMP, 2002).
Line of Evidence (LOE) for Decision ID 70055, Aldrin
Region 7
Wiest Lake
LOE ID:
126238
Pollutant:
Aldrin
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Warm Freshwater Habitat
Number of Samples:
3
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP RWB7 Monitoring data for Wiest Lake to determine beneficial use support and the results are as follows 0 of the 3 samples exceeded the water quality standard for Aldrin. Data were collected for 3 fish species (1 composite(s) of Channel Catfish each composed of 3 fish per composite, 1 composite(s) of Channel Catfish each composed of 9 fish per composite, 1 composite(s) of Striped Bass each composed of 3 fish per composite).
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
National Academy of Science guidelines (NAS 1972) establish a maximum Aldrin concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Line of Evidence (LOE) for Decision ID 70055, Aldrin
Region 7
Wiest Lake
LOE ID:
126221
Pollutant:
Aldrin
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Warm Freshwater Habitat
Number of Samples:
4
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed RWB7 TMDL data for Wiest Lake to determine beneficial use support and the results are as follows 0 of the 4 samples exceeded the water quality standard for Aldrin. Data were collected for 4 fish species (1 composite(s) of Largemouth Bass each composed of 1 fish per composite, 1 composite(s) of Black Crappie each composed of 5 fish per composite, 1 composite(s) of Common Carp each composed of 5 fish per composite, 1 composite(s) of Largemouth Bass each composed of 5 fish per composite).
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
National Academy of Science guidelines (NAS 1972) establish a maximum Aldrin concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.
Regional Board Decision Recommendation:
After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
State Board Review of Regional Board Conclusion and Recommendation:
State Board Decision Recommendation:
After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.
Listing Extent:
Line of Evidence (LOE) for Decision ID 158770, Alkalinity as CaCO3
Region 7
Wiest Lake
LOE ID:
334472
Pollutant:
Alkalinity as CaCO3
LOE Subgroup:
Pollutant-Water
Matrix:
Water
Fraction:
None
Beneficial Use:
Warm Freshwater Habitat
Number of Samples:
1
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP RWB7 Monitoring data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Alkalinity as CaCO3.
The USEPA recommended alkalinity criterion continuous concentration (CCC) for the protection of aquatic life in freshwater is a minimum value of 20,000 ug/L (4-day average).
Line of Evidence (LOE) for Decision ID 158770, Alkalinity as CaCO3
Region 7
Wiest Lake
LOE ID:
334474
Pollutant:
Alkalinity as CaCO3
LOE Subgroup:
Pollutant-Water
Matrix:
Water
Fraction:
None
Beneficial Use:
Cold Freshwater Habitat
Number of Samples:
1
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP RWB7 Monitoring data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Alkalinity as CaCO3.
The USEPA recommended alkalinity criterion continuous concentration (CCC) for the protection of aquatic life in freshwater is a minimum value of 20,000 ug/L (4-day average).
Do Not List on 303(d) list (TMDL required list)(2018)
Revision Status
Revised
Impairment from Pollutant or Pollution:
Pollutant
Regional Board Conclusion:
Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available
Regional Board Decision Recommendation:
After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
State Board Review of Regional Board Conclusion and Recommendation:
State Board Decision Recommendation:
After review of 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 it cannot be determined if applicable water quality standards are not being exceeded.
Listing Extent:
Line of Evidence (LOE) for Decision ID 164470, Arsenic
Region 7
Wiest Lake
LOE ID:
46252
Pollutant:
Arsenic
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:
0
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 0 samples exceed the criterion for Arsenic. Six composites were generated from two species: black crappie and channel catfish. Composites comprised of 3 - 4 fish for black crappie and 2 -3 fish for channel catfish. Six samples were not used in the assessment because the laboratory data reporting limit(s) was above the objective and therefore the results could not be quantified with the level of certainty required by the Listing Policy.
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life (Water Quality Control Plan, Colorado River Basin).
The modified OEHHA Fish Contaminant Goal for arsenic in fish tissue is 0.0034 ppm. This screening level assumes an average body weight of 70 kg and a consumption rate of 32 g/day for a 30 year exposure over a 70-year lifetime. It is assumed that 10% of the total arsenic is present as inorganic arsenic. This constituent is a carcinogen therefore the risk level is set to one in a million.
Line of Evidence (LOE) for Decision ID 164470, Arsenic
Region 7
Wiest Lake
LOE ID:
5560
Pollutant:
Arsenic
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Total
Beneficial Use:
Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:
1
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Two fish fillet samples were taken at 1 location in lake. One fish fillet sample result could not be used in this assessment because the constituent was not analyzed for in the sample. The 1 fish fillet sample that was acceptable was generally collected in 12/1999. This sample did not exceeded the OEHHA Screening Value (TSMP, 2007).
Basin Plan: No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (CRBRWQCB, 2006).
Samples were collected from the interior of Wiest Lake.
Temporal Representation:
Two largemouth bass fillet composite samples were collected in 10/1989 and 12/1999.
Environmental Conditions:
QAPP Information:
The field procedures are described in TSMP Data Reports and associated Appendices. CDFG's Laboratory applies Quality Assurance Program Plan procedures for laboratory Quality Assurance and Quality Control, as described in Rasmussen (1993).
Do Not List on 303(d) list (TMDL required list)(2018)
Revision Status
Revised
Impairment from Pollutant or Pollution:
Pollutant
Regional Board Conclusion:
Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available
Regional Board Decision Recommendation:
After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
State Board Review of Regional Board Conclusion and Recommendation:
State Board Decision Recommendation:
After review of 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 it cannot be determined if applicable water quality standards are not being exceeded.
Listing Extent:
Line of Evidence (LOE) for Decision ID 164471, Cadmium
Region 7
Wiest Lake
LOE ID:
46253
Pollutant:
Cadmium
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:
2
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for Cadmium. Six composites were generated from two species: black crappie and channel catfish. Composites comprised of 3 - 4 fish for black crappie and 2 -3 fish for channel catfish. Composites collected at the same time on the same day for the same species were averaged in accordance with the listing policy.
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life (Water Quality Control Plan, Colorado River Basin).
The modified OEHHA Fish Contaminant Goal for cadmium in fish tissue is 2.2 ppm. This screening level assumes an average body weight of 70 kg and a consumption rate of 32 g/day.
Do Not List on 303(d) list (TMDL required list)(2018)
Revision Status
Revised
Impairment from Pollutant or Pollution:
Pollutant
Regional Board Conclusion:
Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available
Regional Board Decision Recommendation:
After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
State Board Review of Regional Board Conclusion and Recommendation:
State Board Decision Recommendation:
After review of 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 it cannot be determined if applicable water quality standards are not being exceeded.
Listing Extent:
Line of Evidence (LOE) for Decision ID 158764, Chlordane
Region 7
Wiest Lake
LOE ID:
336347
Pollutant:
Chlordane
LOE Subgroup:
Pollutant-Water
Matrix:
Water
Fraction:
Total
Beneficial Use:
Municipal & Domestic Supply
Number of Samples:
1
Number of Exceedances:
1
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP RWB7 Monitoring data for Wiest Lake to determine beneficial use support and results are as follows: 1 of 1 samples exceeded the water quality threshold for Total Chlordane.
Line of Evidence (LOE) for Decision ID 158764, Chlordane
Region 7
Wiest Lake
LOE ID:
5549
Pollutant:
Chlordane
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Total
Beneficial Use:
Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:
2
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Two fish fillet samples were taken at 1 location in the lake. The samples were generally collected in 10/1989 and 12/1999. Of these two samples, neither exceeded the OEHHA Fish Contaminant Goal (TSMP, 2007).
Basin Plan: No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (CRBRWQCB, 2006).
Samples were collected from the interior of Wiest Lake.
Temporal Representation:
Two largemouth bass fillet composite samples were collected in 10/1989 and 12/1999.
Environmental Conditions:
QAPP Information:
The field procedures are described in TSMP Data Reports and associated Appendices. CDFG's Laboratory applies Quality Assurance Program Plan procedures for laboratory Quality Assurance and Quality Control, as described in Rasmussen (1993).
Line of Evidence (LOE) for Decision ID 158764, Chlordane
Region 7
Wiest Lake
LOE ID:
5580
Pollutant:
Chlordane
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Total
Beneficial Use:
Warm Freshwater Habitat
Number of Samples:
2
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Two fish fillet samples were taken at 1 location in the lake. The samples were generally collected in 10/1989 and 12/1999. Of these two samples, neither exceeded the NAS tissue guideline (TSMP, 2007).
Basin Plan: No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (CRBRWQCB, 2006).
Samples were collected from the interior of Wiest Lake.
Temporal Representation:
Two largemouth bass fillet composite samples were collected in 10/1989 and 12/1999.
Environmental Conditions:
QAPP Information:
The field procedures are described in TSMP Data Reports and associated Appendices. CDFG's Laboratory applies Quality Assurance Program Plan procedures for laboratory Quality Assurance and Quality Control, as described in Rasmussen (1993).
Line of Evidence (LOE) for Decision ID 158764, Chlordane
Region 7
Wiest Lake
LOE ID:
46295
Pollutant:
Chlordane
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Warm Freshwater Habitat
Number of Samples:
1
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Chlordane, Total. One composite (3 fish per composite) was generated from one species: channel catfish. Details of the compositing protocol can be found in the March 2009 report entitled: "Contaminants in Fish from California Lakes and Reservoirs: Technical Report on Year One of a Two-Year Screening Study" (SWAMP, 2009). Total chlordane was calculated as the sum of the following chlordane isomers: cis- and trans-chlordane, cis- and trans-nonachlor, and oxychlordane.
No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (Water Quality Control Plan, Colorado River Basin).
National Academy of Science guidelines (NAS 1972) establish a maximum total Chlordane concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Data for this line of evidence for Wiest Lake was collected at 1 monitoring site [ Wiest Lake_BOG - 723PWT019]. Samples were collected from 1 location. Individual sample locations consisted of an area within a given waterbody from which fish tissue samples were collected. The number of sample locations per waterbody was based on the overall size of the waterbody (SWAMP, 2010). Specifics of individual sampling locations can be found in the supplemental report entitled "Cruise Report for the Surface Waters Ambient Monitoring Program (SWAMP) Bioaccumulation Screening Study in California Lakes and Reservoirs, Sampling Dates: June 2007- March 2008" (SWAMP, 2008).
Temporal Representation:
Data was collected on a single day 11/1/2007.
Environmental Conditions:
Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:
Samples were collected, processed, and analyzed in accordance with the methods described in Quality Assurance Project Plan "Screening Study of Bioaccumulation in California Lakes and Reservoirs." (SWAMP, 2002).
Line of Evidence (LOE) for Decision ID 158764, Chlordane
Region 7
Wiest Lake
LOE ID:
46267
Pollutant:
Chlordane
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Warm Freshwater Habitat
Number of Samples:
2
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for Chlordane, Total. Six composites were generated from two species: black crappie and channel catfish. Composites comprised of 3 - 4 fish for black crappie and 2 -3 fish for channel catfish. Total chlordane was calculated as the sum of the following chlordane isomers: cis- and trans-chlordane, cis- and trans-nonachlor, and oxychlordane. Composites collected at the same time on the same day for the same species were averaged in accordance with the listing policy.
No individual chemical or combination of chemicals shall be present in concentrations that adversely affect
DECISION ID
70055
Region 7
Wiest Lake
Pollutant:
Aldrin
Final Listing Decision:
Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:
Do Not List on 303(d) list (TMDL required list)(2016)
Revision Status
Revised
Impairment from Pollutant or Pollution:
Pollutant
Regional Board Conclusion:
This pollutant is being considered for placement on the section 303(d) list under section 3.5 of the Listing Policy. Under section 3.5 a single line of evidence is necessary to assess listing status.
Nine lines of evidence are available in the administrative record to assess this pollutant.
None of the samples exceed the water quality objectives.
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 ten fish fillet fraction and none of two total fraction fish tissue samples exceeded the NAS fish tissue guideline and the sample sizes are insufficient to determine with the power and confidence of the Listing Policy if standards are not met. A minimum of 16 samples is needed for application of table 3.1.
4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.
Regional Board Decision Recommendation:
After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
State Board Review of Regional Board Conclusion and Recommendation:
State Board Decision Recommendation:
Listing Extent:
Line of Evidence (LOE) for Decision ID 70055, Aldrin
Region 7
Wiest Lake
LOE ID:
46238
Pollutant:
Aldrin
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Cold Freshwater Habitat
Number of Samples:
2
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for Aldrin. Six composites were generated from two species: black crappie and channel catfish. Composites comprised of 3 - 4 fish for black crappie and 2 -3 fish for channel catfish. Composites collected at the same time on the same day for the same species were averaged in accordance with the listing policy.
No individual chemical or combination of chemicals shall be present in conbeneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (Water Quality Control Plan, Colorado River Basin).
National Academy of Science guidelines (NAS 1972) establish a maximum total Chlordane concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Line of Evidence (LOE) for Decision ID 158764, Chlordane
Region 7
Wiest Lake
LOE ID:
126556
Pollutant:
Chlordane
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Warm Freshwater Habitat
Number of Samples:
4
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed RWB7 TMDL data for Wiest Lake to determine beneficial use support and the results are as follows 0 of the 4 samples exceeded the water quality standard for Total Chlordanes. Data were collected for 4 fish species (1 composite(s) of Largemouth Bass each composed of 1 fish per composite, 1 composite(s) of Black Crappie each composed of 5 fish per composite, 1 composite(s) of Common Carp each composed of 5 fish per composite, 1 composite(s) of Largemouth Bass each composed of 5 fish per composite).
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
National Academy of Science guidelines (NAS 1972) establish a maximum total Chlordane concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Line of Evidence (LOE) for Decision ID 158764, Chlordane
Region 7
Wiest Lake
LOE ID:
126256
Pollutant:
Chlordane
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Warm Freshwater Habitat
Number of Samples:
3
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP RWB7 Monitoring data for Wiest Lake to determine beneficial use support and the results are as follows 0 of the 3 samples exceeded the water quality standard for Total Chlordanes. Data were collected for 3 fish species (1 composite(s) of Channel Catfish each composed of 3 fish per composite, 1 composite(s) of Channel Catfish each composed of 9 fish per composite, 1 composite(s) of Striped Bass each composed of 3 fish per composite).
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
National Academy of Science guidelines (NAS 1972) establish a maximum total Chlordane concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Line of Evidence (LOE) for Decision ID 158764, Chlordane
Region 7
Wiest Lake
LOE ID:
126291
Pollutant:
Chlordane
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Commercial or recreational collection of fish, shellfiscentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (Water Quality Control Plan, Colorado River Basin).
National Academy of Science guidelines (NAS 1972) establish a maximum Aldrin concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Line of Evidence (LOE) for Decision ID 70055, Aldrin
Region 7
Wiest Lake
LOE ID:
5572
Pollutant:
Aldrin
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Total
Beneficial Use:
Warm Freshwater Habitat
Number of Samples:
2
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Two fish fillet samples were taken at 1 location in the lake. The samples were generally collected in 10/1989 and 12/1999. Of these two samples, neither exceeded the NAS tissue guideline (TSMP, 2007).
Basin Plan: No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (CRBRWQCB, 2006).
Samples were collected from the interior of Wiest Lake.
Temporal Representation:
Two largemouth bass fillet composite samples were collected in 10/1989 and 12/1999.
Environmental Conditions:
QAPP Information:
The field procedures are described in TSMP Data Reports and associated Appendices. CDFG's Laboratory applies Quality Assurance Program Plan procedures for laboratory Quality Assurance and Quality Control, as described in Rasmussen (1993).
Line of Evidence (LOE) for Decision ID 70055, Aldrin
Region 7
Wiest Lake
LOE ID:
126237
Pollutant:
Aldrin
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Cold Freshwater Habitat
Number of Samples:
3
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP RWB7 Monitoring data for Wiest Lake to determine beneficial use support and the results are as follows 0 of the 3 samples exceeded the water quality standard for Aldrin. Data were collected for 3 fish species (1 composite(s) of Channel Catfish each composed of 3 fish per composite, 1 composite(s) of Channel Catfish each composed of 9 fish per composite, 1 composite(s) of Striped Bass each composed of 3 fish per composite).
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
National Academy of Science guidelines (NAS 1972) establish a maximum Aldrin concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Line of Evidence (LOE) for Decision ID 70055, Aldrin
Region 7
Wiest Lake
LOE ID:
126464
Pollutant:
Aldrin
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Cold Freshwater Habitat
Number of Samples:
4
Number of Samples:
4
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed RWB7 TMDL data for Wiest Lake to determine beneficial use support and the results are as follows 0 of the 4 samples exceeded the water quality standard for Total Chlordanes. Data were collected for 4 fish species (1 composite(s) of Largemouth Bass each composed of 1 fish per composite, 1 composite(s) of Black Crappie each composed of 5 fish per composite, 1 composite(s) of Common Carp each composed of 5 fish per composite, 1 composite(s) of Largemouth Bass each composed of 5 fish per composite).
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
The modified OEHHA Fish Contaminant Goal for total chlordane in fish tissue is 3.9 ppb. This screening level assumes an average body weight of 70 kg and a consumption rate of 32 g/day for a 30 year exposure over a 70-year lifetime. This constituent is a carcinogen therefore the risk level is set to one in a million. A cooking reduction factor of 1 is applied for skin-off fillets. (Klasing, S., and R. Brodberg, 2008)
Line of Evidence (LOE) for Decision ID 158764, Chlordane
Region 7
Wiest Lake
LOE ID:
126515
Pollutant:
Chlordane
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:
3
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP RWB7 Monitoring data for Wiest Lake to determine beneficial use support and the results are as follows 0 of the 3 samples exceeded the water quality standard for Total Chlordanes. Data were collected for 3 fish species (1 composite(s) of Channel Catfish each composed of 3 fish per composite, 1 composite(s) of Channel Catfish each composed of 9 fish per composite, 1 composite(s) of Striped Bass each composed of 3 fish per composite).
All waters shall be maintained free of toxic substances in concentrati3%">Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed RWB7 TMDL data for Wiest Lake to determine beneficial use support and the results are as follows 0 of the 4 samples exceeded the water quality standard for Aldrin. Data were collected for 4 fish species (1 composite(s) of Largemouth Bass each composed of 1 fish per composite, 1 composite(s) of Black Crappie each composed of 5 fish per composite, 1 composite(s) of Common Carp each composed of 5 fish per composite, 1 composite(s) of Largemouth Bass each composed of 5 fish per composite).
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
National Academy of Science guidelines (NAS 1972) establish a maximum Aldrin concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Line of Evidence (LOE) for Decision ID 70055, Aldrin
Region 7
Wiest Lake
LOE ID:
46251
Pollutant:
Aldrin
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Warm Freshwater Habitat
Number of Samples:
2
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for Aldrin. Six composites were generated from two species: black crappie and channel catfish. Composites comprised of 3 - 4 fish for black crappie and 2 -3 fish for channel catfish. Composites collected at the same time on the same day for the same species were averaged in accordance with the listing policy.
No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (Water Quality Control Plan, Colorado River Basin).
The modified OEHHA Fish Contaminant Goal for total chlordane in fish tissue is 3.9 ppb. This screening level assumes an average body weight of 70 kg and a consumption rate of 32 g/day for a 30 year exposure over a 70-year lifetime. This constituent is a carcinogen therefore the risk level is set to one in a million. A cooking reduction factor of 1 is applied for skin-off fillets. (Klasing, S., and R. Brodberg, 2008)
Line of Evidence (LOE) for Decision ID 158764, Chlordane
Region 7
Wiest Lake
LOE ID:
46293
Pollutant:
Chlordane
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:
1
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Chlordane, Total. One composite (3 fish per composite) was generated from one species: channel catfish. Details of the compositing protocol can be found in the March 2009 report entitled: "Contaminants in Fish from California Lakes and Reservoirs: Technical Report on Year One of a Two-Year Screening Study" (SWAMP, 2009). Total chlordane was calculated as the sum of the following chlordane isomers: cis- and trans-chlordane, cis- and trans-nonachlor, and oxychlordane.
No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (Water Quality Control Plan, Colorado River Basin).
National Academy of Science guidelines (NAS 1972) establish a maximum Aldrin concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Line of Evidence (LOE) for Decision ID 70055, Aldrin
Region 7
Wiest Lake
LOE ID:
46292
Pollutant:
Aldrin
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Warm Freshwater Habitat
Number of Samples:
1
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Aldrin. One composite (3 fish per composite) was generated from one species: channel catfish. Details of the compositing protocol can be found in the March 2009 report entitled: "Contaminants in Fish from California Lakes and Reservoirs: Technical Report on Year One of a Two-Year Screening Study" (SWAMP, 2009).
No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (Water Quality Control Plan, Colorado River Basin).
National Academy of Science guidelines (NAS 1972) establish a maximum Aldrin concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Data for this line of evidence for Wiest Lake was collected at 1 monitoring site [ Wiest Lake_BOG - 723PWT019]. Samples were collected from 1 location. Individual sample locations c>
Evaluation Guideline:
The modified OEHHA Fish Contaminant Goal for total chlordane in fish tissue is 3.9 ppb. This screening level assumes an average body weight of 70 kg and a consumption rate of 32 g/day for a 30 year exposure over a 70-year lifetime. This constituent is a carcinogen therefore the risk level is set to one in a million. A cooking reduction factor of 1 is applied for skin-off fillets.
Data for this line of evidence for Wiest Lake was collected at 1 monitoring site [ Wiest Lake_BOG - 723PWT019]. Samples were collected from 1 location. Individual sample locations consisted of an area within a given waterbody from which fish tissue samples were collected. The number of sample locations per waterbody was based on the overall size of the waterbody (SWAMP, 2010). Specifics of individual sampling locations can be found in the supplemental report entitled "Cruise Report for the Surface Waters Ambient Monitoring Program (SWAMP) Bioaccumulation Screening Study in California Lakes and Reservoirs, Sampling Dates: June 2007- March 2008" (SWAMP, 2008).
Temporal Representation:
Data was collected on a single day 11/1/2007.
Environmental Conditions:
Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:
Samples were collected, processed, and analyzed in accordance with the methods described in Quality Assurance Project Plan "Screening Study of Bioaccumulation in California Lakes and Reservoirs." (SWAMP, 2002).
Line of Evidence (LOE) for Decision ID 158764, Chlordane
Region 7
Wiest Lake
LOE ID:
46254
Pollutant:
Chlordane
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:
2
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for Chlordane, Total. Six composites were generated from two species: black crappie and channel catfish. Composites comprised of 3 - 4 fish for black crappie and 2 -3 fish for channel catfish. Total chlordane was calculated as the sum of the following chlordane isomers: cis- and trans-chlordane, cis- and trans-nonachlor, and oxychlordane. Composites collected at the same time on the same day for the same species were averaged in accordance with the listing policy.
No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (Water Quality Control Plan, Colorado River Basin).
The modified OEHHA Fish Contaminant Goal for total chlordane in fish tissue is 3.9 ppb. This screening level assumes an average body weight of 70 kg and a consumption rate of 32 g/day for a 30 year exposure over a 70-year lifetime. This constituent is a carcinogen therefore the risk level is set to one in a million. A cooking reduction factor of 1 is applied for skin-off fillets.
Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:
Samples were collected, processed, and analyzed in accordance with the methods described in Quality Assurance Project Plan "Screening Study of Bioaccumulation in California Lakes and Reservoirs." (SWAMP, 2002).
Line of Evidence (LOE) for Decision ID 70055, Aldrin
Region 7
Wiest Lake
LOE ID:
46291
Pollutant:
Aldrin
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Cold Freshwater Habitat
Number of Samples:
1
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Aldrin. One composite (3 fish per composite) was generated from one species: channel catfish. Details of the compositing protocol can be found in the March 2009 report entitled: "Contaminants in Fish from California Lakes and Reservoirs: Technical Report on Year One of a Two-Year Screening Study" (SWAMP, 2009).
No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (Water Quality Control Plan, Colorado River Basin).
National Academy of Science guidelines (NAS 1972) establish a maximum Aldrin concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Data for this line of evidence for Wiest Lake was collected at 1 monitoring site [ Wiest Lake_BOG - 723PWT019]. Samples were collected from 1 location. Individual sample locations consisted of an area within a given waterbody from which fish tissue samples were collected. The number of sample locations per waterbody was based on the overall size of the waterbody (SWAMP, 2010). Specifics of ign="top" width="33%">Spatial Representation:
Data for this line of evidence for Wiest Lake was collected at 1 monitoring site [ Wiest Lake - 723WIESLK]
Temporal Representation:
Data was collected on a single day 11/6/2004.
Environmental Conditions:
Staff is not aware of any special conditions that might affect interpretation of the data.
Line of Evidence (LOE) for Decision ID 158764, Chlordane
Region 7
Wiest Lake
LOE ID:
46294
Pollutant:
Chlordane
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Cold Freshwater Habitat
Number of Samples:
1
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Chlordane, Total. One composite (3 fish per composite) was generated from one species: channel catfish. Details of the compositing protocol can be found in the March 2009 report entitled: "Contaminants in Fish from California Lakes and Reservoirs: Technical Report on Year One of a Two-Year Screening Study" (SWAMP, 2009). Total chlordane was calculated as the sum of the following chlordane isomers: cis- and trans-chlordane, cis- and trans-nonachlor, and oxychlordane.
No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (Water Quality Control Plan, Colorado River Basin).
National Academy of Science guidelines (NAS 1972) establish a maximum total Chlordane concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Data for this line of evidence for Wiest Lake was collected at 1 monitoring site [ Wiest Lake_BOG - 723PWT019]. Samples were collected from 1 location. Individual sample locations consisted of an area within a given waterbody from which fish tissue samples were collected. The number of sample locations per waterbody was based on the overall size of the waterbody (SWAMP, 2010). Specifics of individual sampling locations can be found in the supplemental report entitled "Cruise Report for the Surface Waters Ambient Monitoring Program (SWAMP) Bioaccumulation Screening Study in California Lakes and Reservoirs, Sampling Dates: June 2007- March 2008" (SWAMP, 2008).
ndividual sampling locations can be found in the supplemental report entitled "Cruise Report for the Surface Waters Ambient Monitoring Program (SWAMP) Bioaccumulation Screening Study in California Lakes and Reservoirs, Sampling Dates: June 2007- March 2008" (SWAMP, 2008).
Temporal Representation:
Data was collected on a single day 11/1/2007.
Environmental Conditions:
Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:
Samples were collected, processed, and analyzed in accordance with the methods described in Quality Assurance Project Plan "Screening Study of Bioaccumulation in California Lakes and Reservoirs." (SWAMP, 2002).
Line of Evidence (LOE) for Decision ID 70055, Aldrin
Region 7
Wiest Lake
LOE ID:
126238
Pollutant:
Aldrin
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Warm Freshwater Habitat
Number of Samples:
3
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP RWB7 Monitoring data for Wiest Lake to determine beneficial use support and the results are as follows 0 of the 3 samples exceeded the water quality standard for Aldrin. Data were collected for 3 fish species (1 composite(s) of Channel Catfish each composed of 3 fish per composite, 1 composite(s) of Channel Catfish each composed of 9 fish per composite, 1 composite(s) of Striped Bass each composed of 3 fish per composite).
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
National Academy of Science guidelines (NAS 1972) establish a maximum Aldrin concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Line of Evidence (LOE) for Decision ID 70055, Aldrin
Region 7
Wiest Lake
LOE ID:
126221
Pollutant:
Aldrin
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Warm Freshwater Habitat
Number of Samples:
4
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed RWB7 TMDL data for Wiest Lake to determine beneficial use support and the results are as follows 0 of the 4 samples exceeded the water quality standard for Aldrin. Data were collected for 4 fish species (1 composite(s) of Largemouth Bass each composed of 1 fish per composite, 1 composite(s) of Black Crappie each composed of 5 fish per composite, 1 composite(s) of Common Carp each composed of 5 fish per composite, 1 composite(s) of Largemouth Bass each composed of 5 fish per composite).
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
National Academy of Science guidelines (NAS 1972) establish a maximum Aldrin concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:
Samples were collected, processed, and analyzed in accordance with the methods described in Quality Assurance Project Plan "Screening Study of Bioaccumulation in California Lakes and Reservoirs." (SWAMP, 2002).
Line of Evidence (LOE) for Decision ID 158764, Chlordane
Region 7
Wiest Lake
LOE ID:
46266
Pollutant:
Chlordane
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Cold Freshwater Habitat
Number of Samples:
2
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for Chlordane, Total. Six composites were generated from two species: black crappie and channel catfish. Composites comprised of 3 - 4 fish for black crappie and 2 -3 fish for channel catfish. Total chlordane was calculated as the sum of the following chlordane isomers: cis- and trans-chlordane, cis- and trans-nonachlor, and oxychlordane. Composites collected at the same time on the same day for the same species were averaged in accordance with the listing policy.
No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (Water Quality Control Plan, Colorado River Basin).
National Academy of Science guidelines (NAS 1972) establish a maximum total Chlordane concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Line of Evidence (LOE) for Decision ID 158764, Chlordane
Region 7
Wiest Lake
LOE ID:
126520
Pollutant:
Chlordane
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Cold Freshwater Habitat
Number of Samples:
3
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP RWB7 Monitoring data for Wiest Lake to determine beneficial use support and the results are as follows 0 of the 3 samples exceeded the water quality standard for Total Chlordanes. Data were collected for 3 fish species (1 composite(s) of Channel Catfish each composed of 3 fish per composite, 1 composite(s) of Channel Catfish each composed of 9 fish per composite, 1 composite(s) of Striped Bass each composed of 3 fish per composite).
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
National Academy of Science guidelines (NAS 1972) establish a maximum total Chlordane concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Line of Evidence (LOE) for Decision ID 158764, Chlordane
Region 7
Wiest Lake
LOE ID:
126222
Pollutant:
Chlordane
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Cold Freshwater Habitat
Number of Samples:
4
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed RWB7 TMDL data for Wiest Lake to determine beneficial use support and the results are as follows 0 of the 4 samples exceeded the water quality standard for Total Chlordanes. Data were collected for 4 fish species (1 composite(s) of Largemouth Bass each composed of 1 fish per composite, 1 composite(s) of Black Crappie each composed of 5 fish per composite, 1 composite(s) of Common Carp each composed of 5 fish per composite, 1 composite(s) of Largemouth Bass each composed of 5 fish per composite).
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
National Academy of Science guidelines (NAS 1972) establish a maximum total Chlordane concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.
Regional Board Decision Recommendation:
After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
State Board Review of Regional Board Conclusion and Recommendation:
State Board Decision Recommendation:
After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.
Listing Extent:
Line of Evidence (LOE) for Decision ID 158770, Alkalinity as CaCO3
Region 7
Wiest Lake
LOE ID:
334472
Pollutant:
Alkalinity as CaCO3
LOE Subgroup:
Pollutant-Water
Matrix:
Water
Fraction:
None
Beneficial Use:
Warm Freshwater Habitat
Number of Samples:
1
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP RWB7 Monitoring data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Alkalinity as CaCO3.
The USEPA recommended alkalinity criterion continuous concentration (CCC) for the protection of aquatic life in freshwater is a minimum value of 20,000 ug/L (4-day average).
Line of Evidence (LOE) for Decision ID 158770, Alkalinity as CaCO3
Region 7
Wiest Lake
LOE ID:
334474
Pollutant:
Alkalinity as CaCO3
LOE Subgroup:
Pollutant-Water
Matrix:
Water
Fraction:
None
Beneficial Use:
Cold Freshwater Habitat
Number of Samples:
1
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP RWB7 Monitoring data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Alkalinity as CaCO3.
The USEPA recommended alkalinity criterion continuous concentration (CCC) for the protection of aquatic life in freshwater is a minimum value of 20,000 ug/L (4-day average).
Do Not List on 303(d) list (TMDL required list)(2018)
Revision Status
Revised
Impairment from Pollutant or Pollution:
Pollutant
Regional Board Conclusion:
Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available
Regional Board Decision Recommendation:
After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
State Board Review of Regional Board Conclusion and Recommendation:
State Board Decision Recommendation:
After review of 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 it cannot be determined if applicable water quality standards are not being exceeded.
Listing Extent:
Line of Evidence (LOE) for Decision ID 164472, Chlorpyrifos
Region 7
Wiest Lake
LOE ID:
5550
Pollutant:
Chlorpyrifos
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Total
Beneficial Use:
Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:
2
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Two fish fillet samples were taken at 1 location in the lake. The samples were generally collected in 10/1989 and 12/1999. Of these two samples, neither exceeded the OEHHA Screening Value (TSMP, 2007).
Basin Plan: No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (CRBRWQCB, 2006).
Samples were collected from the interior of Wiest Lake.
Temporal Representation:
Two largemouth bass fillet composite samples were collected in 10/1989 and 12/1999.
Environmental Conditions:
QAPP Information:
The field procedures are described in TSMP Data Reports and associated Appendices. CDFG's Laboratory applies Quality Assurance Program Plan procedures for laboratory Quality Assurance and Quality Control, as described in Rasmussen (1993).
Line of Evidence (LOE) for Decision ID 164472, Chlorpyrifos
Region 7
Wiest Lake
LOE ID:
46268
Pollutant:
Chlorpyrifos
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:
2
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for Chlorpyrifos. Six composites were generated from two species: black crappie and channel catfish. Composites comprised of 3 - 4 fish for black crappie and 2 -3 fish for channel catfish. Composites collected at the same time on the same day for the same species were averaged in accordance with the listing policy.
No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (Water Quality Control Plan, Colorado River Basin).
The modified OEHHA Fish Contaminant Goal for chlorpyrifos in fish tissue is 660 ppb. This screening level assumes an average body weight of 70 kg and a consumption rate of 32 g/day. A cooking reduction factor of 1 is applied for skin-off fillets.
Do Not List on 303(d) list (TMDL required list)(2018)
Revision Status
Revised
Impairment from Pollutant or Pollution:
Pollutant
Regional Board Conclusion:
Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available
Regional Board Decision Recommendation:
After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
State Board Review of Regional Board Conclusion and Recommendation:
State Board Decision Recommendation:
After review of 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 it cannot be determined if applicable water quality standards are not being exceeded.
Listing Extent:
Line of Evidence (LOE) for Decision ID 164470, Arsenic
Region 7
Wiest Lake
LOE ID:
46252
Pollutant:
Arsenic
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:
0
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 0 samples exceed the criterion for Arsenic. Six composites were generated from two species: black crappie and channel catfish. Composites comprised of 3 - 4 fish for black crappie and 2 -3 fish for channel catfish. Six samples were not used in the assessment because the laboratory data reporting limit(s) was above the objective and therefore the results could not be quantified with the level of certainty required by the Listing Policy.
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life (Water Quality Control Plan, Colorado River Basin).
The modified OEHHA Fish Contaminant Goal for arsenic in fish tissue is 0.0034 ppm. This screening level assumes an average body weight of 70 kg and a consumption rate of 32 g/day for a 30 year exposure over a 70-year lifetime. It is assumed that 10% of the total arsenic is present as inorganic arsenic. This constituent is a carcinogen therefore the risk level is set to one in a million.
Line of Evidence (LOE) for Decision ID 164470, Arsenic
Region 7
Wiest Lake
LOE ID:
5560
Pollutant:
Arsenic
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Total
Beneficial Use:
Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:
1
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Two fish fillet samples were taken at 1 location in lake. One fish fillet sample result could not be used in this assessment because the constituent was not analyzed for in the sample. The 1 fish fillet sample that was acceptable was generally collected in 12/1999. This sample did not exceeded the OEHHA Screening Value (TSMP, 2007).
Basin Plan: No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (CRBRWQCB, 2006).
Samples were collected from the interior of Wiest Lake.
Temporal Representation:
Two largemouth bass fillet composite samples were collected in 10/1989 and 12/1999.
Environmental Conditions:
QAPP Information:
The field procedures are described in TSMP Data Reports and associated Appendices. CDFG's Laboratory applies Quality Assurance Program Plan procedures for laboratory Quality Assurance and Quality Control, as described in Rasmussen (1993).
Do Not List on 303(d) list (TMDL required list)(2018)
Revision Status
Revised
Impairment from Pollutant or Pollution:
Pollutant
Regional Board Conclusion:
Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available
Regional Board Decision Recommendation:
After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
State Board Review of Regional Board Conclusion and Recommendation:
State Board Decision Recommendation:
After review of 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 it cannot be determined if applicable water quality standards are not being exceeded.
Listing Extent:
Line of Evidence (LOE) for Decision ID 164471, Cadmium
Region 7
Wiest Lake
LOE ID:
46253
Pollutant:
Cadmium
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:
2
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for Cadmium. Six composites were generated from two species: black crappie and channel catfish. Composites comprised of 3 - 4 fish for black crappie and 2 -3 fish for channel catfish. Composites collected at the same time on the same day for the same species were averaged in accordance with the listing policy.
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life (Water Quality Control Plan, Colorado River Basin).
The modified OEHHA Fish Contaminant Goal for cadmium in fish tissue is 2.2 ppm. This screening level assumes an average body weight of 70 kg and a consumption rate of 32 g/day.
Do Not List on 303(d) list (TMDL required list)(2018)
Revision Status
Revised
Impairment from Pollutant or Pollution:
Pollutant
Regional Board Conclusion:
Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available
Regional Board Decision Recommendation:
After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
State Board Review of Regional Board Conclusion and Recommendation:
State Board Decision Recommendation:
After review of 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 it cannot be determined if applicable water quality standards are not being exceeded.
Listing Extent:
Line of Evidence (LOE) for Decision ID 164474, Diazinon
Region 7
Wiest Lake
LOE ID:
5552
Pollutant:
Diazinon
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Total
Beneficial Use:
Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:
2
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Two fish fillet samples were taken at 1 location in the lake. The samples were generally collected in 10/1989 and 12/1999. Of these two samples, neither exceeded the OEHHA Screening Value (TSMP, 2007).
Basin Plan: No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (CRBRWQCB, 2006).
Samples were collected from the interior of Wiest Lake.
Temporal Representation:
Two largemouth bass fillet composite samples were collected in 10/1989 and 12/1999.
Environmental Conditions:
QAPP Information:
The field procedures are described in TSMP Data Reports and associated Appendices. CDFG's Laboratory applies Quality Assurance Program Plan procedures for laboratory Quality Assurance and Quality Control, as described in Rasmussen (1993).
Line of Evidence (LOE) for Decision ID 164474, Diazinon
Region 7
Wiest Lake
LOE ID:
46282
Pollutant:
Diazinon
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:
2
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for Diazinon. Six composites were generated from two species: black crappie and channel catfish. Composites comprised of 3 - 4 fish for black crappie and 2 -3 fish for channel catfish. Composites collected at the same time on the same day for the same species were averaged in accordance with the listing policy.
No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (Water Quality Control Plan, Colorado River Basin).
The modified OEHHA Fish Contaminant Goal for diazinon in fish tissue is 1,500 ppb. This screening level assumes an average body weight of 70 kg and a consumption rate of 32 g/day. A cooking reduction factor of 1 is applied for skin-off fillets.
Do Not List on 303(d) list (TMDL required list)(2018)
Revision Status
Revised
Impairment from Pollutant or Pollution:
Pollutant
Regional Board Conclusion:
Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available
Regional Board Decision Recommendation:
After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
State Board Review of Regional Board Conclusion and Recommendation:
State Board Decision Recommendation:
After review of 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 it cannot be determined if applicable water quality standards are not being exceeded.
Listing Extent:
Line of Evidence (LOE) for Decision ID 164476, Endosulfan
Region 7
Wiest Lake
LOE ID:
126176
Pollutant:
Endosulfan
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:
1
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP RWB7 Monitoring data for Wiest Lake to determine beneficial use support and the results are as follows 0 of the 1 samples exceeded the water quality standard for Endosulfan. Data were collected for 1 fish species (1 composite(s) of Striped Bass each composed of 3 fish per composite).
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
The modified OEHHA Fish Contaminant Goal for endosulfan (l and ll) in fish tissue is 13,000 ppb. This screening level assumes an average body weight of 70 kg and a consumption rate of 32 g/day. A cooking reduction factor of 1 is applied for skin-off fillets. (Klasing, S., and R. Brodberg, 2008; USEPA, 2000)
Line of Evidence (LOE) for Decision ID 164476, Endosulfan
Region 7
Wiest Lake
LOE ID:
46096
Pollutant:
Endosulfan
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:
2
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for Endosulfan, Total. Six composites were generated from two species: black crappie and channel catfish. Composites comprised of 3 - 4 fish for black crappie and 2 -3 fish for channel catfish. Total endosulfan was calculated as the sum of endosulfan l and endosulfan ll. Composites collected at the same time on the same day for the same species were averaged in accordance with the listing policy.
No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (Water Quality Control Plan, Colorado River Basin).
The modified OEHHA Fish Contaminant Goal for endosulfan (l and ll) in fish tissue is 13,000 ppb. This screening level assumes an average body weight of 70 kg and a consumption rate of 32 g/day. A cooking reduction factor of 1 is applied for skin-off fillets.
Data for this line of evidence for Wiest Lake was collected at 1 monitoring site [ Wiest Lake - 723WIESLK]
Temporal Representation:
Data was collected on a single day 11/6/2004.
Environmental Conditions:
Staff is not aware of any special conditions that might affect interpretation of the data.
DECISION ID
158764
Region 7
Wiest Lake
Pollutant:
Chlordane
Final Listing Decision:
Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:
Do Not List on 303(d) list (TMDL required list)(2018)
Revision Status
Revised
Impairment from Pollutant or Pollution:
Pollutant
Regional Board Conclusion:
Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available
Regional Board Decision Recommendation:
After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
State Board Review of Regional Board Conclusion and Recommendation:
State Board Decision Recommendation:
After review of 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 it cannot be determined if applicable water quality standards are not being exceeded.
Listing Extent:
Line of Evidence (LOE) for Decision ID 158764, Chlordane
Region 7
Wiest Lake
LOE ID:
336347
Pollutant:
Chlordane
LOE Subgroup:
Pollutant-Water
Matrix:
Water
Fraction:
Total
Beneficial Use:
Municipal & Domestic Supply
Number of Samples:
1
Number of Exceedances:
1
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP RWB7 Monitoring data for Wiest Lake to determine beneficial use support and results are as follows: 1 of 1 samples exceeded the water quality threshold for Total Chlordane.
Line of Evidence (LOE) for Decision ID 158764, Chlordane
Region 7
Wiest Lake
LOE ID:
5549
Pollutant:
Chlordane
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Total
Beneficial Use:
Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:
2
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Two fish fillet samples were taken at 1 location in the lake. The samples were generally collected in 10/1989 and 12/1999. Of these two samples, neither exceeded the OEHHA Fish Contaminant Goal (TSMP, 2007).
Basin Plan: No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (CRBRWQCB, 2006).
Samples were collected from the interior of Wiest Lake.
Temporal Representation:
Two largemouth bass fillet composite samples were collected in 10/1989 and 12/1999.
Environmental Conditions:
QAPP Information:
The field procedures are described in TSMP Data Reports and associated Appendices. CDFG's Laboratory applies Quality Assurance Program Plan procedures for laboratory Quality Assurance and Quality Control, as described in Rasmussen (1993).
Line of Evidence (LOE) for Decision ID 164476, Endosulfan
Region 7
Wiest Lake
LOE ID:
126326
Pollutant:
Endosulfan
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Warm Freshwater Habitat
Number of Samples:
1
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP RWB7 Monitoring data for Wiest Lake to determine beneficial use support and the results are as follows 0 of the 1 samples exceeded the water quality standard for Endosulfan. Data were collected for 1 fish species (1 composite(s) of Striped Bass each composed of 3 fish per composite).
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
National Academy of Science guidelines (NAS 1972) establish a maximum Endosulfan, Total concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Line of Evidence (LOE) for Decision ID 164476, Endosulfan
Region 7
Wiest Lake
LOE ID:
126667
Pollutant:
Endosulfan
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Warm Freshwater Habitat
Matrix:
Tissue
Fraction:
Total
Beneficial Use:
Warm Freshwater Habitat
Number of Samples:
2
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Two fish fillet samples were taken at 1 location in the lake. The samples were generally collected in 10/1989 and 12/1999. Of these two samples, neither exceeded the NAS tissue guideline (TSMP, 2007).
Basin Plan: No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (CRBRWQCB, 2006).
Samples were collected from the interior of Wiest Lake.
Temporal Representation:
Two largemouth bass fillet composite samples were collected in 10/1989 and 12/1999.
Environmental Conditions:
QAPP Information:
The field procedures are described in TSMP Data Reports and associated Appendices. CDFG's Laboratory applies Quality Assurance Program Plan procedures for laboratory Quality Assurance and Quality Control, as described in Rasmussen (1993).
Line of Evidence (LOE) for Decision ID 158764, Chlordane
Region 7
Wiest Lake
LOE ID:
46295
Pollutant:
Chlordane
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Warm Freshwater Habitat
Number of Samples:
1
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Chlordane, Total. One composite (3 fish per composite) was generated from one species: channel catfish. Details of the compositing protocol can be found in the March 2009 report entitled: "Contaminants in Fish from California Lakes and Reservoirs: Technical Report on Year One of a Two-Year Screening Study" (SWAMP, 2009). Total chlordane was calculated as the sum of the following chlordane isomers: cis- and trans-chlordane, cis- and trans-nonachlor, and oxychlordane.
Water Board staff assessed RWB7 TMDL data for Wiest Lake to determine beneficial use support and the results are as follows 0 of the 4 samples exceeded the water quality standard for Endosulfan. Data were collected for 4 fish species (1 composite(s) of Largemouth Bass each composed of 1 fish per composite, 1 composite(s) of Black Crappie each composed of 5 fish per composite, 1 composite(s) of Common Carp each composed of 5 fish per composite, 1 composite(s) of Largemouth Bass each composed of 5 fish per composite).
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
National Academy of Science guidelines (NAS 1972) establish a maximum Endosulfan, Total concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Line of Evidence (LOE) for Decision ID 164476, Endosulfan
Region 7
Wiest Lake
LOE ID:
46177
Pollutant:
Endosulfan
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Warm Freshwater Habitat
Number of Samples:
2
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for Endosulfan, Total. Six composites were generated from two species: black crappie and channel catfish. Composites comprised of 3 - 4 fish for black crappie and 2 -3 fish for channel catfish. Total endosulfan was calculated as the sum of endosulfan l and endosulfan ll. Composites collected at the same time on the same day for the same species were averaged in accordance with the listing policy.
No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (Water Quality Control Plan, Colorado River Basin).
No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (Water Quality Control Plan, Colorado River Basin).
National Academy of Science guidelines (NAS 1972) establish a maximum total Chlordane concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Data for this line of evidence for Wiest Lake was collected at 1 monitoring site [ Wiest Lake_BOG - 723PWT019]. Samples were collected from 1 location. Individual sample locations consisted of an area within a given waterbody from which fish tissue samples were collected. The number of sample locations per waterbody was based on the overall size of the waterbody (SWAMP, 2010). Specifics of individual sampling locations can be found in the supplemental report entitled "Cruise Report for the Surface Waters Ambient Monitoring Program (SWAMP) Bioaccumulation Screening Study in California Lakes and Reservoirs, Sampling Dates: June 2007- March 2008" (SWAMP, 2008).
Temporal Representation:
Data was collected on a single day 11/1/2007.
Environmental Conditions:
Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:
Samples were collected, processed, and analyzed in accordance with the methods described in Quality Assurance Project Plan "Screening Study of Bioaccumulation in California Lakes and Reservoirs." (SWAMP, 2002).
Line of Evidence (LOE) for Decision ID 158764, Chlordane
Region 7
Wiest Lake
LOE ID:
46267
Pollutant:
Chlordane
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Warm Freshwater Habitat
Number of Samples:
2
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for Chlordane, Total. Six composites were generated from two species: black crappie and channel catfish. Composites comprised of 3 - 4 fish for black crappie and 2 -3 fish for channel catfish. Total chlordane was calculated as the sum of the following chlordane isomers: cis- and trans-chlordane, cis- and trans-nonachlor, and oxychlordane. Composites collected at the same time on the same day for the same species were averaged in accordance with the listing policy.
National Academy of Science guidelines (NAS 1972) establish a maximum total Endosulfan concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Line of Evidence (LOE) for Decision ID 164476, Endosulfan
Region 7
Wiest Lake
LOE ID:
5553
Pollutant:
Endosulfan
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Total
Beneficial Use:
Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:
2
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Two fish fillet samples were taken at 1 location in the lake. The samples were generally collected in 10/1989 and 12/1999. Of these two samples, neither exceeded the OEHHA Screening Value (TSMP, 2007).
Basin Plan: No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (CRBRWQCB, 2006).
Samples were collected from the interior of Wiest Lake.
Temporal Representation:
Two largemouth bass fillet composite samples were collected in 10/1989 and 12/1999.
Environmental Conditions:
QAPP Information:
The field procedures are described in TSMP Data Reports and associated Appendices. CDFG's Laboratory applies Quality Assurance Program Plan procedures for laboratory Quality Assurance and Quality Control, as described in Rasmussen (1993).
Line of Evidence (LOE) for Decision ID 164476, Endosulfan
Region 7
Wiest Lake
LOE ID:
5606
Pollutant:
Endosulfan
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Total
Beneficial Use:
Warm Freshwater Habitat
Number of Samples:
2
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Two fish fillet samples were taken at 1 location in the lake. The samples were generally collected in 10/1989 and 12/1999. Of these two samples, neither exceeded the NAS tissue guideline (TSMP, 2007).
Basin Plan: No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (CRBRWQCB, 2006).
Samples were collected from the interior of Wiest Lake.
Temporal Representation:
Two largemouth bass fillet composite samples were collected in 10/1989 and 12/1999.
Environmental Conditions:
QAPP Information:
The field procedures are described in TSMP Data Reports and associated Appendices. CDFG's Laboratory applies Quality Assurance Program Plan procedures for laboratory Quality Assurance and Quality Control, as described in Rasmussen (1993).
Line of Evidence (LOE) for Decision ID 164476, Endosulfan
Region 7
Wiest Lake
LOE ID:
126177
Pollutant:
Endosulfan
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Cold Freshwater Habitat
Number of Samples:
1
Number of Exceedances:
0
Data and Information Type:
PHYSICALbeneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (Water Quality Control Plan, Colorado River Basin).
National Academy of Science guidelines (NAS 1972) establish a maximum total Chlordane concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Line of Evidence (LOE) for Decision ID 158764, Chlordane
Region 7
Wiest Lake
LOE ID:
126556
Pollutant:
Chlordane
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Warm Freshwater Habitat
Number of Samples:
4
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed RWB7 TMDL data for Wiest Lake to determine beneficial use support and the results are as follows 0 of the 4 samples exceeded the water quality standard for Total Chlordanes. Data were collected for 4 fish species (1 composite(s) of Largemouth Bass each composed of 1 fish per composite, 1 composite(s) of Black Crappie each composed of 5 fish per composite, 1 composite(s) of Common Carp each composed of 5 fish per composite, 1 composite(s) of Largemouth Bass each composed of 5 fish per composite).
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
National Academy of Science guidelines (NAS 1972) establish a maximum total Chlordane concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Line of Evidence (LOE) for Decision ID 158764, Chlordane
Region 7
Wiest Lake
LOE ID:
126256
Pollutant:
Chlordane
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Warm Freshwater Habitat
Number of Samples:
3
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP RWB7 Monitoring data for Wiest Lake to determine beneficial use support and the results are as follows 0 of the 3 samples exceeded the water quality standard for Total Chlordanes. Data were collected for 3 fish species (1 composite(s) of Channel Catfish each composed of 3 fish per composite, 1 composite(s) of Channel Catfish each composed of 9 fish per composite, 1 composite(s) of Striped Bass each composed of 3 fish per composite).
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
National Academy of Science guidelines (NAS 1972) establish a maximum total Chlordane concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Line of Evidence (LOE) for Decision ID 158764, Chlordane
Region 7
Wiest Lake
LOE ID:
126291
Pollutant:
Chlordane
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Commercial or recreational collection of fish, shellfis/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP RWB7 Monitoring data for Wiest Lake to determine beneficial use support and the results are as follows 0 of the 1 samples exceeded the water quality standard for Endosulfan. Data were collected for 1 fish species (1 composite(s) of Striped Bass each composed of 3 fish per composite).
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
National Academy of Science guidelines (NAS 1972) establish a maximum Endosulfan, Total concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Line of Evidence (LOE) for Decision ID 164476, Endosulfan
Region 7
Wiest Lake
LOE ID:
46097
Pollutant:
Endosulfan
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Cold Freshwater Habitat
Number of Samples:
2
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for Endosulfan, Total. Six composites were generated from two species: black crappie and channel catfish. Composites comprised of 3 - 4 fish for black crappie and 2 -3 fish for channel catfish. Total endosulfan was calculated as the sum of endosulfan l and endosulfan ll. Composites collected at the same time on the same day for the same species were averaged in accordance with the listing policy.
No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (Water Quality Control Plan, Colorado River Basin).
National Academy of Science guidelines (NAS 1972) establish a maximum total Endosulfan concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
h, or organisms
Number of Samples:
4
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed RWB7 TMDL data for Wiest Lake to determine beneficial use support and the results are as follows 0 of the 4 samples exceeded the water quality standard for Total Chlordanes. Data were collected for 4 fish species (1 composite(s) of Largemouth Bass each composed of 1 fish per composite, 1 composite(s) of Black Crappie each composed of 5 fish per composite, 1 composite(s) of Common Carp each composed of 5 fish per composite, 1 composite(s) of Largemouth Bass each composed of 5 fish per composite).
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
The modified OEHHA Fish Contaminant Goal for total chlordane in fish tissue is 3.9 ppb. This screening level assumes an average body weight of 70 kg and a consumption rate of 32 g/day for a 30 year exposure over a 70-year lifetime. This constituent is a carcinogen therefore the risk level is set to one in a million. A cooking reduction factor of 1 is applied for skin-off fillets. (Klasing, S., and R. Brodberg, 2008)
Line of Evidence (LOE) for Decision ID 158764, Chlordane
Region 7
Wiest Lake
LOE ID:
126515
Pollutant:
Chlordane
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:
3
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP RWB7 Monitoring data for Wiest Lake to determine beneficial use support and the results are as follows 0 of the 3 samples exceeded the water quality standard for Total Chlordanes. Data were collected for 3 fish species (1 composite(s) of Channel Catfish each composed of 3 fish per composite, 1 composite(s) of Channel Catfish each composed of 9 fish per composite, 1 composite(s) of Striped Bass each composed of 3 fish per composite).
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
The modified OEHHA Fish Contaminant Goal for total chlordane in fish tissue is 3.9 ppb. This screening level assumes an average body weight of 70 kg and a consumption rate of 32 g/day for a 30 year exposure over a 70-year lifetime. This constituent is a carcinogen therefore the risk level is set to one in a million. A cooking reduction factor of 1 is applied for skin-off fillets. (Klasing, S., and R. Brodberg, 2008)
Line of Evidence (LOE) for Decision ID 158764, Chlordane
Region 7
Wiest Lake
LOE ID:
46293
Pollutant:
Chlordane
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:
1
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Chlordane, Total. One composite (3 fish per composite) was generated from one species: channel catfish. Details of the compositing protocol can be found in the March 2009 report entitled: "Contaminants in Fish from California Lakes and Reservoirs: Technical Report on Year One of a Two-Year Screening Study" (SWAMP, 2009). Total chlordane was calculated as the sum of the following chlordane isomers: cis- and trans-chlordane, cis- and trans-nonachlor, and oxychlordane.
No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (Water Quality Control Plan, Colorado River Basin).
Line of Evidence (LOE) for Decision ID 164476, Endosulfan
Region 7
Wiest Lake
LOE ID:
126476
Pollutant:
Endosulfan
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Cold Freshwater Habitat
Number of Samples:
4
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed RWB7 TMDL data for Wiest Lake to determine beneficial use support and the results are as follows 0 of the 4 samples exceeded the water quality standard for Endosulfan. Data were collected for 4 fish species (1 composite(s) of Largemouth Bass each composed of 1 fish per composite, 1 composite(s) of Black Crappie each composed of 5 fish per composite, 1 composite(s) of Common Carp each composed of 5 fish per composite, 1 composite(s) of Largemouth Bass each composed of 5 fish per composite).
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
National Academy of Science guidelines (NAS 1972) establish a maximum Endosulfan, Total concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Line of Evidence (LOE) for Decision ID 164476, Endosulfan
Region 7
Wiest Lake
LOE ID:
126384
Pollutant:
Endosulfan
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
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:
Water Board staff assessed RWB7 TMDL data for Wiest Lake to determine beneficial use support and the results are as follows 0 of the 4 samples exceeded the water quality standard for Endosulfan. Data were collected for 4 fish species (1 composite(s) of Largemouth Bass each composed of 1 fish per composite, 1 composite(s) of Black Crappie each composed of 5 fish per composite, 1 composite(s) of Common Carp each composed of 5 fish per composite, 1 composite(s) of Largemouth Bass each composed of 5 fish per composite).
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
The modified OEHHA Fish Contaminant Goal for endosulfan (l and ll) in fish tissue is 13,000 ppb. This screening level assumes an average body weight of 70 kg and a consumption rate of 32 g/day. A cooking reduction factor of 1 is applied for skin-off fillets. (Klasing, S., and R. Brodberg, 2008; USEPA, 2000)
The modified OEHHA Fish Contaminant Goal for total chlordane in fish tissue is 3.9 ppb. This screening level assumes an average body weight of 70 kg and a consumption rate of 32 g/day for a 30 year exposure over a 70-year lifetime. This constituent is a carcinogen therefore the risk level is set to one in a million. A cooking reduction factor of 1 is applied for skin-off fillets.
Data for this line of evidence for Wiest Lake was collected at 1 monitoring site [ Wiest Lake_BOG - 723PWT019]. Samples were collected from 1 location. Individual sample locations consisted of an area within a given waterbody from which fish tissue samples were collected. The number of sample locations per waterbody was based on the overall size of the waterbody (SWAMP, 2010). Specifics of individual sampling locations can be found in the supplemental report entitled "Cruise Report for the Surface Waters Ambient Monitoring Program (SWAMP) Bioaccumulation Screening Study in California Lakes and Reservoirs, Sampling Dates: June 2007- March 2008" (SWAMP, 2008).
Temporal Representation:
Data was collected on a single day 11/1/2007.
Environmental Conditions:
Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:
Samples were collected, processed, and analyzed in accordance with the methods described in Quality Assurance Project Plan "Screening Study of Bioaccumulation in California Lakes and Reservoirs." (SWAMP, 2002).
Line of Evidence (LOE) for Decision ID 158764, Chlordane
Region 7
Wiest Lake
LOE ID:
46254
Pollutant:
Chlordane
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:
2
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for Chlordane, Total. Six composites were generated from two species: black crappie and channel catfish. Composites comprised of 3 - 4 fish for black crappie and 2 -3 fish for channel catfish. Total chlordane was calculated as the sum of the following chlordane isomers: cis- and trans-chlordane, cis- and trans-nonachlor, and oxychlordane. Composites collected at the same time on the same day for the same species were averaged in accordance with the listing policy.
No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (Water Quality Control Plan, Colorado River Basin).
The modified OEHHA Fish Contaminant Goal for total chlordane in fish tissue is 3.9 ppb. This screening level assumes an average body weight of 70 kg and a consumption rate of 32 g/day for a 30 year exposure over a 70-year lifetime. This constituent is a carcinogen therefore the risk level is set to one in a million. A cooking reduction factor of 1 is applied for skin-off fillets.
Line of Evidence (LOE) for Decision ID 158764, Chlordane
Region 7
Wiest Lake
LOE ID:
46294
Pollutant:
Chlordane
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Cold Freshwater Habitat
Number of Samples:
1
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Chlordane, Total. One composite (3 fish per composite) was generated from one species: channel catfish. Details of the compositing protocol can be found in the March 2009 report entitled: "Contaminants in Fish from California Lakes and Reservoirs: Technical Report on Year One of a Two-Year Screening Study" (SWAMP, 2009). Total chlordane was calculated as the sum of the following chlordane isomers: cis- and trans-chlordane, cis- and trans-nonachlor, and oxychlordane.
No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (Water Quality Control Plan, Colorado River Basin).
National Academy of Science guidelines (NAS 1972) establish a maximum total Chlordane concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Data for this line of evidence for Wiest Lake was collected at 1 monitoring site [ Wiest Lake_BOG - 723PWT019]. Samples were collected from 1 location. Individual sample locations consisted of an area within a given waterbody from which fish tissue samples were collected. The number of sample locations per waterbody was based on the overall size of the waterbody (SWAMP, 2010). Specifics of individual sampling locations can be found in the supplemental report entitled "Cruise Report for the Surface Waters Ambient Monitoring Program (SWAMP) Bioaccumulation Screening Study in California Lakes and Reservoirs, Sampling Dates: June 2007- March 2008" (SWAMP, 2008).
DECISION ID
164477
Region 7
Wiest Lake
Pollutant:
Endrin
Final Listing Decision:
Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:
Do Not List on 303(d) list (TMDL required list)(2018)
Revision Status
Revised
Impairment from Pollutant or Pollution:
Pollutant
Regional Board Conclusion:
Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available
Regional Board Decision Recommendation:
After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
State Board Review of Regional Board Conclusion and Recommendation:
State Board Decision Recommendation:
After review of 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 it cannot be determined if applicable water quality standards are not being exceeded.
Listing Extent:
Line of Evidence (LOE) for Decision ID 164477, Endrin
Region 7
Wiest Lake
LOE ID:
46306
Pollutant:
Endrin
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Cold Freshwater Habitat
Number of Samples:
1
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Endrin. One composite (3 fish per composite) was generated from one species: channel catfish. Details of the compositing protocol can be found in the March 2009 report entitled: "Contaminants in Fish from California Lakes and Reservoirs: Technical Report on Year One of a Two-Year Screening Study" (SWAMP, 2009).
Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:
Samples were collected, processed, and analyzed in accordance with the methods described in Quality Assurance Project Plan "Screening Study of Bioaccumulation in California Lakes and Reservoirs." (SWAMP, 2002).
Line of Evidence (LOE) for Decision ID 158764, Chlordane
Region 7
Wiest Lake
LOE ID:
46266
Pollutant:
Chlordane
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Cold Freshwater Habitat
Number of Samples:
2
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for Chlordane, Total. Six composites were generated from two species: black crappie and channel catfish. Composites comprised of 3 - 4 fish for black crappie and 2 -3 fish for channel catfish. Total chlordane was calculated as the sum of the following chlordane isomers: cis- and trans-chlordane, cis- and trans-nonachlor, and oxychlordane. Composites collected at the same time on the same day for the same species were averaged in accordance with the listing policy.
No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (Water Quality Control Plan, Colorado River Basin).
National Academy of Science guidelines (NAS 1972) establish a maximum total Chlordane concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Line of Evidence (LOE) for Decision ID 158764, Chlordane
Region 7
SWAMP Data:
SWAMP
Water Quality Objective/Criterion:
No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (Water Quality Control Plan, Colorado River Basin).
National Academy of Science guidelines (NAS 1972) establish a maximum Endrin concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Data for this line of evidence for Wiest Lake was collected at 1 monitoring site [ Wiest Lake_BOG - 723PWT019]. Samples were collected from 1 location. Individual sample locations consisted of an area within a given waterbody from which fish tissue samples were collected. The number of sample locations per waterbody was based on the overall size of the waterbody (SWAMP, 2010). Specifics of individual sampling locations can be found in the supplemental report entitled "Cruise Report for the Surface Waters Ambient Monitoring Program (SWAMP) Bioaccumulation Screening Study in California Lakes and Reservoirs, Sampling Dates: June 2007- March 2008" (SWAMP, 2008).
Temporal Representation:
Data was collected on a single day 11/1/2007.
Environmental Conditions:
Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:
Samples were collected, processed, and analyzed in accordance with the methods described in Quality Assurance Project Plan "Screening Study of Bioaccumulation in California Lakes and Reservoirs." (SWAMP, 2002).
Line of Evidence (LOE) for Decision ID 164477, Endrin
Region 7
Wiest Lake
LOE ID:
46179
Pollutant:
Endrin
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Cold Freshwater Habitat
Number of Samples:
2
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for Endrin. Six composites were generated from two species: black crappie and channel catfish. Composites comprised of 3 - 4 fish for black crappie and 2 -3 fish for channel catfish. Composites collected at the same time on the same day for the same species were averaged in accordance with the listing policy.
No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (Water Quality Control Plan, Colorado River Basin).
National Academy of Science guidelines (NAS 1972) establish a maximum Endrin concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Line of Evidence (LOE) for Decision ID 164477, Endrin
Region 7
Wiest Lake
LOE ID:
126350
Pollutant:
Endrin
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Cold Freshwater Habitat
Number of Samples:
1
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP RWB7 Monitoring data for Wiest Lake to determine beneficial use support and the results are as follows 0 of the 1 samples exceeded the water quality standard for Endrin. Data were collected for 1 fish species (1 composite(s) of Striped Bass each composed of 3 fish per composite).
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
National Academy of Science guidelines (NAS 1972) establish a maximum Endrin concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Line of Evidence (LOE) for Decision ID 164477, Endrin
Region 7
Wiest Lake
LOE ID:
126520
Pollutant:
Chlordane
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Cold Freshwater Habitat
Number of Samples:
3
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP RWB7 Monitoring data for Wiest Lake to determine beneficial use support and the results are as follows 0 of the 3 samples exceeded the water quality standard for Total Chlordanes. Data were collected for 3 fish species (1 composite(s) of Channel Catfish each composed of 3 fish per composite, 1 composite(s) of Channel Catfish each composed of 9 fish per composite, 1 composite(s) of Striped Bass each composed of 3 fish per composite).
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
National Academy of Science guidelines (NAS 1972) establish a maximum total Chlordane concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Line of Evidence (LOE) for Decision ID 158764, Chlordane
Region 7
Wiest Lake
LOE ID:
126222
Pollutant:
Chlordane
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Cold Freshwater Habitat
Number of Samples:
4
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed RWB7 TMDL data for Wiest Lake to determine beneficial use support and the results are as follows 0 of the 4 samples exceeded the water quality standard for Total Chlordanes. Data were collected for 4 fish species (1 composite(s) of Largemouth Bass each composed of 1 fish per composite, 1 composite(s) of Black Crappie each composed of 5 fish per composite, 1 composite(s) of Common Carp each composed of 5 fish per composite, 1 composite(s) of Largemouth Bass each composed of 5 fish per composite).
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
National Academy of Science guidelines (NAS 1972) establish a maximum total Chlordane concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Water Board staff assessed RWB7 TMDL data for Wiest Lake to determine beneficial use support and the results are as follows 0 of the 4 samples exceeded the water quality standard for Endrin. Data were collected for 4 fish species (1 composite(s) of Largemouth Bass each composed of 1 fish per composite, 1 composite(s) of Black Crappie each composed of 5 fish per composite, 1 composite(s) of Common Carp each composed of 5 fish per composite, 1 composite(s) of Largemouth Bass each composed of 5 fish per composite).
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
National Academy of Science guidelines (NAS 1972) establish a maximum Endrin concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Line of Evidence (LOE) for Decision ID 164477, Endrin
Region 7
Wiest Lake
LOE ID:
46305
Pollutant:
Endrin
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:
1
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Endrin. One composite (3 fish per composite) was generated from one species: channel catfish. Details of the compositing protocol can be found in the March 2009 report entitled: "Contaminants in Fish from California Lakes and Reservoirs: Technical Report on Year One of a Two-Year Screening Study" (SWAMP, 2009).
No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (Water Quality Control Plan, Colorado River Basin).
The modified OEHHA Fish Contaminant Goal for endrin in fish tissue is 660 ppb. This screening level assumes an average body weight of 70 kg and a consumption rate of 32 g/day. A cooking reduction factor of 1 is applied for skin-off fillets.
Data for this line of evidence for Wiest Lake was collected at 1 monitoring site [ Wiest Lake_BOG - 723PWT019]. Samples were collected from 1 location. Individual sample locations consisted of an area within a given waterbody from which fish tissue samples were collected. The number of sample locations per waterbody was based on the overall size of the waterbody (SWAMP, 2010). Specifics of individual sampling locations can be found in the supplemental report entitled "Cruise Report for the Surface Waters Ambient Monitoring Program (SWAMP) Bioaccumulation Screening Study in California Lakes and Reservoirs, Sampling Dates: June 2007- March 2008" (SWAMP, 2008).
Temporal Representation:
Data was collected on a single day 11/1/2007.
Environmental Conditions:
Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:
Samples were collected, processed, and analyzed in accordance with the methods described in Quality Assurance Project Plan "Screening Study of Bioaccumulation in California Lakes and Reservoirs." (SWAMP, 2002).
Line of Evidence (LOE) for Decision ID 164477, Endrin
Region 7
Wiest Lake
LOE ID:
46178
Pollutant:
Endrin
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:
2
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for Endrin. Six composites were generated from two species: black crappie and channel catfish. Composites comprised of 3 - 4 fish for black crappie and 2 -3
DECISION ID
164472
Region 7
Wiest Lake
Pollutant:
Chlorpyrifos
Final Listing Decision:
Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:
Do Not List on 303(d) list (TMDL required list)(2018)
Revision Status
Revised
Impairment from Pollutant or Pollution:
Pollutant
Regional Board Conclusion:
Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available
Regional Board Decision Recommendation:
After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
State Board Review of Regional Board Conclusion and Recommendation:
State Board Decision Recommendation:
After review of 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 it cannot be determined if applicable water quality standards are not being exceeded.
Listing Extent:
Line of Evidence (LOE) for Decision ID 164472, Chlorpyrifos
Region 7
Wiest Lake
LOE ID:
5550
Pollutant:
Chlorpyrifos
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Total
Beneficial Use:
Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:
2
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Two fish fillet samples were taken at 1 location in the lake. The samples were generally collected in 10/1989 and 12/1999. Of these two samples, neither exceeded the OEHHA Screening Value (TSMP, 2007).
Basin Plan: No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (CRBRWQCB, 2006).
Samples were collected from the interior of Wiest Lake.
Temporal Representation:
Two largemouth bass fillet composite samples were collected in 10/1989 and 12/1999.
Environmental Conditions:
QAPP Information:
The field procedures are described in TSMP Data Reports and associated Appendices. CDFG's Laboratory applies Quality Assurance Program Plan procedures for laboratory Quality Assurance and Quality Control, as described in Rasmussen (1993).
Line of Evidence (LOE) for Decision ID 164472, Chlorpyrifos
Region 7
Wiest Lake
LOE ID:
46268
Pollutant:
Chlorpyrifos
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:
2
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for Chlorpyrifos. Six composites were generated from two species: black crappie and channel catfish. Composites comprised of 3 - 4 fish for black crappie and 2 -3 fish for channel catfish. Composites collected at the same time on the same day for the same species were averaged in accordance with the listing policy.
No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (Water Quality Control Plan, Colorado River Basin).
The modified OEHHA Fish Contaminant Goal for chlorpyrifos in fish tissue is 660 ppb. This screening level assumes an average body weight of 70 kg and a consumption rate of 32 g/day. A cooking reduction factor of 1 is applied for skin-off fillets.
fish for channel catfish. Composites collected at the same time on the same day for the same species were averaged in accordance with the listing policy.
No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (Water Quality Control Plan, Colorado River Basin).
The modified OEHHA Fish Contaminant Goal for endrin in fish tissue is 660 ppb. This screening level assumes an average body weight of 70 kg and a consumption rate of 32 g/day. A cooking reduction factor of 1 is applied for skin-off fillets.
Line of Evidence (LOE) for Decision ID 164477, Endrin
Region 7
Wiest Lake
LOE ID:
126226
Pollutant:
Endrin
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
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:
Water Board staff assessed RWB7 TMDL data for Wiest Lake to determine beneficial use support and the results are as follows 0 of the 4 samples exceeded the water quality standard for Endrin. Data were collected for 4 fish species (1 composite(s) of Largemouth Bass each composed of 1 fish per composite, 1 composite(s) of Black Crappie each composed of 5 fish per composite, 1 composite(s) of Common Carp each composed of 5 fish per composite, 1 composite(s) of Largemouth Bass each composed of 5 fish per composite).
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
The modified OEHHA Fish Contaminant Goal for endrin in fish tissue is 660 ppb. This screening level assumes an average body weight of 70 kg and a consumption rate of 32 g/day. A cooking reduction factor of 1 is applied for skin-off fillets. (Klasing, S., and R. Brodberg, 2008; USEPA, 2000)
Line of Evidence (LOE) for Decision ID 164477, Endrin
Region 7
Wiest Lake
LOE ID:
126351
Pollutant:
Endrin
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:
1
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP RWB7 Monitoring data for Wiest Lake to determine beneficial use support and the results are as follows 0 of the 1 samples exceeded the water quality standard for Endrin. Data were collected for 1 fish species (1 composite(s) of Striped Bass each composed of 3 fish per composite).
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
The modified OEHHA Fish Contaminant Goal for endrin in fish tissue is 660 ppb. This screening level assumes an average body weight of 70 kg and a consumption rate of 32 g/day. A cooking reduction factor of 1 is applied for skin-off fillets. (Klasing, S., and R. Brodberg, 2008; USEPA, 2000)
Data was collected from 1 station(s) with the station code(s): 723PWT019.
Temporal Representation:
Data for this line of evidence were collected between 2014-10-01 and 2014-10-01
Environmental Conditions:
QAPP Information:
Quality Assurance Program Plan and Standard Operating Procedures for SWAMP program
DECISION ID
164474
Region 7
Wiest Lake
Pollutant:
Diazinon
Final Listing Decision:
Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:
Do Not List on 303(d) list (TMDL required list)(2018)
Revision Status
Revised
Impairment from Pollutant or Pollution:
Pollutant
Regional Board Conclusion:
Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available
Regional Board Decision Recommendation:
After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
State Board Review of Regional Board Conclusion and Recommendation:
State Board Decision Recommendation:
After review of 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 it cannot be determined if applicable water quality standards are not being exceeded.
Listing Extent:
Line of Evidence (LOE) for Decision ID 164474, Diazinon
Region 7
Wiest Lake
LOE ID:
5552
Pollutant:
Diazinon
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Total
Beneficial Use:
Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:
2
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Two fish fillet samples were taken at 1 location in the lake. The samples were generally collected in 10/1989 and 12/1999. Of these two samples, neither exceeded the OEHHA Screening Value (TSMP, 2007).
Basin Plan: No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (CRBRWQCB, 2006).
Samples were collected from the interior of Wiest Lake.
Temporal Representation:
Two largemouth bass fillet composite samples were collected in 10/1989 and 12/1999.
Environmental Conditions:
QAPP Information:
The field procedures are described in TSMP Data Reports and associated Appendices. CDFG's Laboratory applies Quality Assurance Program Plan procedures for laboratory Quality Assurance and Quality Control, as described in Rasmussen (1993).
Line of Evidence (LOE) for Decision ID 164474, Diazinon
Region 7
Wiest Lake
LOE ID:
46282
Pollutant:
Diazinon
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:
2
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for Diazinon. Six composites were generated from two species: black crappie and channel catfish. Composites comprised of 3 - 4 fish for black crappie and 2 -3 fish for channel catfish. Composites collected at the same time on the same day for the same species were averaged in accordance with the listing policy.
No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (Water Quality Control Plan, Colorado River Basin).
The modified OEHHA Fish Contaminant Goal for diazinon in fish tissue is 1,500 ppb. This screening level assumes an average body weight of 70 kg and a consumption rate of 32 g/day. A cooking reduction factor of 1 is applied for skin-off fillets.
Line of Evidence (LOE) for Decision ID 164477, Endrin
Region 7
Wiest Lake
LOE ID:
126348
Pollutant:
Endrin
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Warm Freshwater Habitat
Number of Samples:
1
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP RWB7 Monitoring data for Wiest Lake to determine beneficial use support and the results are as follows 0 of the 1 samples exceeded the water quality standard for Endrin. Data were collected for 1 fish species (1 composite(s) of Striped Bass each composed of 3 fish per composite).
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
National Academy of Science guidelines (NAS 1972) establish a maximum Endrin concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Line of Evidence (LOE) for Decision ID 164477, Endrin
Region 7
Wiest Lake
LOE ID:
126232
Pollutant:
Endrin
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Warm Freshwater Habitat
Number of Samples:
4
Number of Exceedances
DECISION ID
164476
Region 7
Wiest Lake
Pollutant:
Endosulfan
Final Listing Decision:
Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:
Do Not List on 303(d) list (TMDL required list)(2018)
Revision Status
Revised
Impairment from Pollutant or Pollution:
Pollutant
Regional Board Conclusion:
Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available
Regional Board Decision Recommendation:
After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
State Board Review of Regional Board Conclusion and Recommendation:
State Board Decision Recommendation:
After review of 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 it cannot be determined if applicable water quality standards are not being exceeded.
Listing Extent:
Line of Evidence (LOE) for Decision ID 164476, Endosulfan
Region 7
Wiest Lake
LOE ID:
126176
Pollutant:
Endosulfan
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:
1
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP RWB7 Monitoring data for Wiest Lake to determine beneficial use support and the results are as follows 0 of the 1 samples exceeded the water quality standard for Endosulfan. Data were collected for 1 fish species (1 composite(s) of Striped Bass each composed of 3 fish per composite).
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
The modified OEHHA Fish Contaminant Goal for endosulfan (l and ll) in fish tissue is 13,000 ppb. This screening level assumes an average body weight of 70 kg and a consumption rate of 32 g/day. A cooking reduction factor of 1 is applied for skin-off fillets. (Klasing, S., and R. Brodberg, 2008; USEPA, 2000)
Line of Evidence (LOE) for Decision ID 164476, Endosulfan
Region 7
Wiest Lake
LOE ID:
46096
Pollutant:
Endosulfan
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:
2
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for Endosulfan, Total. Six composites were generated from two species: black crappie and channel catfish. Composites comprised of 3 - 4 fish for black crappie and 2 -3 fish for channel catfish. Total endosulfan was calculated as the sum of endosulfan l and endosulfan ll. Composites collected at the same time on the same day for the same species were averaged in accordance with the listing policy.
No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (Water Quality Control Plan, Colorado River Basin).
The modified OEHHA Fish Contaminant Goal for endosulfan (l and ll) in fish tissue is 13,000 ppb. This screening level assumes an average body weight of 70 kg and a consumption rate of 32 g/day. A cooking reduction factor of 1 is applied for skin-off fillets.
Data for this line of evidence for Wiest Lake was collected at 1 monitoring site [ Wiest Lake - 723WIESLK]
Temporal Representation:
Data was collected on a single day 11/6/2004.
Environmental Conditions:
Staff is not aware of any special conditions that might affect interpretation of the data.
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed RWB7 TMDL data for Wiest Lake to determine beneficial use support and the results are as follows 0 of the 4 samples exceeded the water quality standard for Endrin. Data were collected for 4 fish species (1 composite(s) of Largemouth Bass each composed of 1 fish per composite, 1 composite(s) of Black Crappie each composed of 5 fish per composite, 1 composite(s) of Common Carp each composed of 5 fish per composite, 1 composite(s) of Largemouth Bass each composed of 5 fish per composite).
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
National Academy of Science guidelines (NAS 1972) establish a maximum Endrin concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Line of Evidence (LOE) for Decision ID 164477, Endrin
Region 7
Wiest Lake
LOE ID:
46307
Pollutant:
Endrin
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Warm Freshwater Habitat
Number of Samples:
1
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Endrin. One composite (3 fish per composite) was generated from one species: channel catfish. Details of the compositing protocol can be found in the March 2009 report entitled: "Contaminants in Fish from California Lakes and Reservoirs: Technical Report on Year One of a Two-Year Screening Study" (SWAMP, 2009).
Line of Evidence (LOE) for Decision ID 164476, Endosulfan
Region 7
Wiest Lake
LOE ID:
126326
Pollutant:
Endosulfan
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Warm Freshwater Habitat
Number of Samples:
1
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP RWB7 Monitoring data for Wiest Lake to determine beneficial use support and the results are as follows 0 of the 1 samples exceeded the water quality standard for Endosulfan. Data were collected for 1 fish species (1 composite(s) of Striped Bass each composed of 3 fish per composite).
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
National Academy of Science guidelines (NAS 1972) establish a maximum Endosulfan, Total concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Line of Evidence (LOE) for Decision ID 164476, Endosulfan
Region 7
Wiest Lake
LOE ID:
126667
Pollutant:
Endosulfan
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Warm Freshwater Habitat
SWAMP Data:
SWAMP
Water Quality Objective/Criterion:
No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (Water Quality Control Plan, Colorado River Basin).
National Academy of Science guidelines (NAS 1972) establish a maximum Endrin concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Data for this line of evidence for Wiest Lake was collected at 1 monitoring site [ Wiest Lake_BOG - 723PWT019]. Samples were collected from 1 location. Individual sample locations consisted of an area within a given waterbody from which fish tissue samples were collected. The number of sample locations per waterbody was based on the overall size of the waterbody (SWAMP, 2010). Specifics of individual sampling locations can be found in the supplemental report entitled "Cruise Report for the Surface Waters Ambient Monitoring Program (SWAMP) Bioaccumulation Screening Study in California Lakes and Reservoirs, Sampling Dates: June 2007- March 2008" (SWAMP, 2008).
Temporal Representation:
Data was collected on a single day 11/1/2007.
Environmental Conditions:
Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:
Samples were collected, processed, and analyzed in accordance with the methods described in Quality Assurance Project Plan "Screening Study of Bioaccumulation in California Lakes and Reservoirs." (SWAMP, 2002).
Line of Evidence (LOE) for Decision ID 164477, Endrin
Region 7
Wiest Lake
LOE ID:
46180
Pollutant:
Endrin
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Warm Freshwater Habitat
Number of Samples:
2
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for Endrin. Six composites were generated from two species: black crappie and channel catfish. Composites comprised of 3 - 4 fish for black crappie and 2 -3 fish for channel catfish. Composites collected at the same time on the same day for the same species were averaged in accordance with the listing policy.
No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (Water Quality Control Plan, Colorado River Basin).
National Academy of Science guidelines (NAS 1972) establish a maximum Endrin concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxitd>
Number of Samples:
4
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed RWB7 TMDL data for Wiest Lake to determine beneficial use support and the results are as follows 0 of the 4 samples exceeded the water quality standard for Endosulfan. Data were collected for 4 fish species (1 composite(s) of Largemouth Bass each composed of 1 fish per composite, 1 composite(s) of Black Crappie each composed of 5 fish per composite, 1 composite(s) of Common Carp each composed of 5 fish per composite, 1 composite(s) of Largemouth Bass each composed of 5 fish per composite).
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
National Academy of Science guidelines (NAS 1972) establish a maximum Endosulfan, Total concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Line of Evidence (LOE) for Decision ID 164476, Endosulfan
Region 7
Wiest Lake
LOE ID:
46177
Pollutant:
Endosulfan
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Warm Freshwater Habitat
Number of Samples:
2
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for Endosulfan, Total. Six composites were generated from two species: black crappie and channel catfish. Composites comprised of 3 - 4 fish for black crappie and 2 -3 fish for channel catfish. Total endosulfan was calculated as the sum of endosulfan l and endosulfan ll. Composites collected at the same time on the same day for the same species were averaged in accordance with the listing policy.
No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (Water Quality Control Plan, Colorado River Basin).
National Academy of Science guidelines (NAS 1972) establish a maximum total Endosulfan concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Line of Evidence (LOE) for Decision ID 164476, Endosulfan
Region 7
Wiest Lake
LOE ID:
5553
Pollutant:
Endosulfan
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Total
Beneficial Use:
Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:
2
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Two fish fillet samples were taken at 1 location in the lake. The samples were generally collected in 10/1989 and 12/1999. Of these two samples, neither exceeded the OEHHA Screening Value (TSMP, 2007).
Basin Plan: No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (CRBRWQCB, 2006).
Samples were collected from the interior of Wiest Lake.
Temporal Representation:
Two largemouth bass fillet composite samples were collected in 10/1989 and 12/1999.
Environmental Conditions:
QAPP Information:
The field procedures are described in TSMP Data Reports and associated Appendices. CDFG's Laboratory applies Quality Assurance Program Plan procedures for laboratory Quality Assurance and Quality Control, as described in Rasmussen (1993).
Line of Evidence (LOE) for Decision ID 164477, Endrin
Region 7
Wiest Lake
LOE ID:
5554
Pollutant:
Endrin
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Total
Beneficial Use:
Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:
2
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Two fish fillet samples were taken at 1 location in the lake. The samples were generally collected in 10/1989 and 12/1999. Of these two samples, neither exceeded the OEHHA Screening Value (TSMP, 2007).
Basin Plan: No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (CRBRWQCB, 2006).
Samples were collected from the interior of Wiest Lake.
Temporal Representation:
Two largemouth bass fillet composite samples were collected in 10/1989 and 12/1999.
Environmental Conditions:
QAPP Information:
The field procedures are described in TSMP Data Reports and associated Appendices. CDFG's Laboratory applies Quality Assurance Program Plan procedures for laboratory Quality Assurance and Quality Control, as described in Rasmussen (1993).
Line of Evidence (LOE) for Decision ID 164477, Endrin
Region 7
Wiest Lake
LOE ID:
5614
Pollutant:
Endrin
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Total
Beneficial Use:
Warm Freshwater Habitat
Number of Samples:
2
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Two fish fillet samples were taken at 1 location in the lake. The samples were generally collected in 10/1989 and 12/1999. Of these two samples, neither exceeded the NAS tissue guideline (TSMP, 2007).
Basin Plan: No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (CRBRWQCB, 2006).
Samples were collected from the interior of Wiest Lake.
Temporal Representation:
Two largemouth bass fillet composite samples were collected in 10/1989 and 12/1999.
Environmental Conditions:
QAPP Information:
The field procedures are described in TSMP Data Reports and associated Appendices. CDFG's Laboratory applies Quality Assurance Program Plan procedures for laboratory Quality Assurance and Quality Control, as described in Rasmussen (1993).
Do Not List on 303(d) list (TMDL required list)(2018)
Revision Status
Revised
Impairment from Pollutant or Pollution:
Pollutant
Regional Board Conclusion:
Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available
Regional Board Decision Recommendation:
After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
State Board Review of Regional Board Conclusion and Recommendation:
State Board Decision Recommendation:
After review of 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 it cannot be determined if applicable water quality standards are not being exceeded.
Listing Extent:
Line of Evidence (LOE) for Decision ID 164484, Ethion
Region 7
Wiest Lake
LOE ID:
5555
Pollutant:
Ethion
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Total
Beneficial Use:
Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:
2
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Two fish fillet samples were taken at 1 location in the lake. The samples were generally collected in 10/1989 and 12/1999. Of these two samples, neither exceeded the OEHHA Screening Value (TSMP, 2007).
Basin Plan: No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (CRBRWQCB, 2006).
Samples were collected from the interior of Wiest Lake.
Temporal Representation:
Two largemouth bass fillet composite samples were collected in 10/1989 and 12/1999.
Environmental Conditions:
QAPP Information:
The field procedures are described in TSMP Data Reports and associated Appendices. CDFG's Laboratory applies Quality Assurance Program Plan procedures for laboratory Quality Assurance and Quality Control, as described in Rasmussen (1993).
ol Board (SWRCB), Division of Water Quality. Sacramento, CA.
Line of Evidence (LOE) for Decision ID 164476, Endosulfan
Region 7
Wiest Lake
LOE ID:
5606
Pollutant:
Endosulfan
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Total
Beneficial Use:
Warm Freshwater Habitat
Number of Samples:
2
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Two fish fillet samples were taken at 1 location in the lake. The samples were generally collected in 10/1989 and 12/1999. Of these two samples, neither exceeded the NAS tissue guideline (TSMP, 2007).
Basin Plan: No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (CRBRWQCB, 2006).
Samples were collected from the interior of Wiest Lake.
Temporal Representation:
Two largemouth bass fillet composite samples were collected in 10/1989 and 12/1999.
Environmental Conditions:
QAPP Information:
The field procedures are described in TSMP Data Reports and associated Appendices. CDFG's Laboratory applies Quality Assurance Program Plan procedures for laboratory Quality Assurance and Quality Control, as described in Rasmussen (1993).
Line of Evidence (LOE) for Decision ID 164476, Endosulfan
Region 7
Wiest Lake
LOE ID:
126177
Pollutant:
Endosulfan
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Cold Freshwater Habitat
Number of Samples:
1
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP RWB7 Monitoring data for Wiest Lake to determine beneficial use support and the results are as follows 0 of the 1 samples exceeded the water quality standard for Endosulfan. Data were collected for 1 fish species (1 composite(s) of Striped Bass each composed of 3 fish per composite).
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
National Academy of Science guidelines (NAS 1972) establish a maximum Endosulfan, Total concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Line of Evidence (LOE) for Decision ID 164476, Endosulfan
Region 7
Wiest Lake
LOE ID:
46097
Pollutant:
Endosulfan
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Cold Freshwater Habitat
Number of Samples:
2
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for Endosulfan, Total. Six composites were generated from two species: black crappie and channel catfish. Composites comprised of 3 - 4 fish for black crappie and 2 -3 fish for channel catfish. Total endosulfan was calculated as the sum of endosulfan l and endosulfan ll. Composites collected at the same time on the same day for the same species were averaged in accordance with the listing policy.
No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (Water Quality Control Plan, Colorado River Basin).
National Academy of Science guidelines (NAS 1972) establish a maximum total Endosulfan concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
DECISION ID
69983
Region 7
Wiest Lake
Pollutant:
Heptachlor
Final Listing Decision:
Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:
Do Not List on 303(d) list (TMDL required list)(2016)
Revision Status
Revised
Impairment from Pollutant or Pollution:
Pollutant
Regional Board Conclusion:
This pollutant is being considered for placement on the section 303(d) list under section 3.5 of the Listing Policy. Under section 3.5 a single line of evidence is necessary to assess listing status.
Nine lines of evidence are available in the administrative record to assess this pollutant.
None of samples exceeds the water quality objectives.
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 ten fish fillet fraction and none of two total fraction fish tissue samples exceeded the NAS fish tissue guideline and the sample sizes are insufficient to determine with the power and confidence of the Listing Policy if standards are not met. A minimum of 16 samples is needed for application of table 3.1.
4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.
Regional Board Decision Recommendation:
After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
State Board Review of Regional Board Conclusion and Recommendation:
State Board Decision Recommendation:
Listing Extent:
Line of Evidence (LOE) for Decision ID 69983, Heptachlor
Region 7
Wiest Lake
LOE ID:
46196
Pollutant:
Heptachlor
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Cold Freshwater Habitat
Number of Samples:
2
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for Heptachlor. Six composites were generated from two species: black crappie and channel catfish. Composites comprised of 3 - 4 fish for black crappie and 2 -3 fish for channel catfish. Composites collected at the same time on the same day for the same species were averaged in accordance with the listing policy.
Line of Evidence (LOE) for Decision ID 164476, Endosulfan
Region 7
Wiest Lake
LOE ID:
126476
Pollutant:
Endosulfan
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Cold Freshwater Habitat
Number of Samples:
4
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed RWB7 TMDL data for Wiest Lake to determine beneficial use support and the results are as follows 0 of the 4 samples exceeded the water quality standard for Endosulfan. Data were collected for 4 fish species (1 composite(s) of Largemouth Bass each composed of 1 fish per composite, 1 composite(s) of Black Crappie each composed of 5 fish per composite, 1 composite(s) of Common Carp each composed of 5 fish per composite, 1 composite(s) of Largemouth Bass each composed of 5 fish per composite).
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
National Academy of Science guidelines (NAS 1972) establish a maximum Endosulfan, Total concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Line of Evidence (LOE) for Decision ID 164476, Endosulfan
Region 7
Wiest Lake
LOE ID:
126384
Pollutant:
Endosulfan
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
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:
Water Board staff assessed RWB7 TMDL data for Wiest Lake to determine beneficial use support and the results are as follows 0 of the 4 samples exceeded the water quality standard for Endosulfan. Data were collected for 4 fish species (1 composite(s) of Largemouth Bass each composed of 1 fish per composite, 1 composite(s) of Black Crappie each composed of 5 fish per composite, 1 composite(s) of Common Carp each composed of 5 fish per composite, 1 composite(s) of Largemouth Bass each composed of 5 fish per composite).
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
The modified OEHHA Fish Contaminant Goal for endosulfan (l and ll) in fish tissue is 13,000 ppb. This screening level assumes an average body weight of 70 kg and a consumption rate of 32 g/day. A cooking reduction factor of 1 is applied for skin-off fillets. (Klasing, S., and R. Brodberg, 2008; USEPA, 2000)
resent in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (Water Quality Control Plan, Colorado River Basin).
National Academy of Science guidelines (NAS 1972) establish a maximum Heptachlor concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Line of Evidence (LOE) for Decision ID 69983, Heptachlor
Region 7
Wiest Lake
LOE ID:
46311
Pollutant:
Heptachlor
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Cold Freshwater Habitat
Number of Samples:
1
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Heptachlor. One composite (3 fish per composite) was generated from one species: channel catfish. Details of the compositing protocol can be found in the March 2009 report entitled: "Contaminants in Fish from California Lakes and Reservoirs: Technical Report on Year One of a Two-Year Screening Study" (SWAMP, 2009).
No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (Water Quality Control Plan, Colorado River Basin).
National Academy of Science guidelines (NAS 1972) establish a maximum Heptachlor concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Data for this line of evidence for Wiest Lake was collected at 1 monitoring site [ Wiest Lake_BOG - 723PWT019]. Samples were collected from 1 location. Individual sample locations consisted of an area within a given waterbody from which fish tissue samples were collected. The number of sample locations per waterbody was based on the overall size of the waterbody (SWAMP, 2010). Specifics of individual sampling locations can be found in the supplemental report entitled "Cruise Report for the Surface Waters Ambient Monitoring Program (SWAMP) Bioaccumulation Screening Study in California Lakes and Reservoirs, Sampling Dates: June 2007- March 2008" (SWAMP, 2008).
Temporal Representation:
Data was collected on a single day 11/1/2007.
Environmental Conditions:
Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:
Samples were collected, processed, and analyzed in accordance with the methods described in Quality Assurance Project Plan "Screening Study of Bioaccumulation in California Lakes and Reservoirs." (SWAMP, 2002).
Line of Evidence (LOE) for Decision ID 69983, Heptachlor
Region 7
Wiest Lake
LOE ID:
126549
Pollutant:
Heptachlor
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Cold Freshwater Habitat
Number of Samples:
3
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP RWB7 Monitoring data for Wiest Lake to determine beneficial use support and the results are as follows 0 of the 3 samples exceeded the water quality standard for Heptachlor. Data were collected for 3 fish species (1 composite(s) of Channel Catfish each composed of 3 fish per composite, 1 composite(s) of Channel Catfish each composed of 9 fish per composite, 1 composite(s) of Striped Bass each composed of 3 fish per composite).
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
National Academy of Science guidelines (NAS 1972) establish a maximum Heptachlor concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Data was collected from 1 station(s) with the station code(s): 723PWT019.
Temporal Representation:
Data for this line of evidence were collected between 2014-10-01 and 2014-10-01
Environmental Conditions:
QAPP Information:
Quality Assurance Program Plan and Standard Operating Procedures for SWAMP program
QAPP Information Reference(s):
DECISION ID
164477
Region 7
Wiest Lake
Pollutant:
Endrin
Final Listing Decision:
Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:
Do Not List on 303(d) list (TMDL required list)(2018)
Revision Status
Revised
Impairment from Pollutant or Pollution:
Pollutant
Regional Board Conclusion:
Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available
Regional Board Decision Recommendation:
After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
State Board Review of Regional Board Conclusion and Recommendation:
State Board Decision Recommendation:
After review of 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 it cannot be determined if applicable water quality standards are not being exceeded.
Listing Extent:
Line of Evidence (LOE) for Decision ID 164477, Endrin
Region 7
Wiest Lake
LOE ID:
46306
Pollutant:
Endrin
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Cold Freshwater Habitat
Number of Samples:
1
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Endrin. One composite (3 fish per composite) was generated from one species: channel catfish. Details of the compositing protocol can be found in the March 2009 report entitled: "Contaminants in Fish from California Lakes and Reservoirs: Technical Report on Year One of a Two-Year Screening Study" (SWAMP, 2009).
Line of Evidence (LOE) for Decision ID 69983, Heptachlor
Region 7
Wiest Lake
LOE ID:
126411
Pollutant:
Heptachlor
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Cold Freshwater Habitat
Number of Samples:
4
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed RWB7 TMDL data for Wiest Lake to determine beneficial use support and the results are as follows 0 of the 4 samples exceeded the water quality standard for Heptachlor. Data were collected for 4 fish species (1 composite(s) of Largemouth Bass each composed of 1 fish per composite, 1 composite(s) of Black Crappie each composed of 5 fish per composite, 1 composite(s) of Common Carp each composed of 5 fish per composite, 1 composite(s) of Largemouth Bass each composed of 5 fish per composite).
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
National Academy of Science guidelines (NAS 1972) establish a maximum Heptachlor concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Line of Evidence (LOE) for Decision ID 69983, Heptachlor
Region 7
Wiest Lake
LOE ID:
46209
Pollutant:
Heptachlor
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Warm Freshwater Habitat
Number of Samples:
2
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for Heptachlor. Six composites were generated from two species: black crappie and channel catfish. Composites comprised of 3 - 4 fish for black crappie and 2 -3 fish for channel catfish. Composites collected at the same time on the same day for the same species were averaged in accordance with the listing policy.
No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (Water Quality Control Plan, Colorado River Basin).
National Academy of Science guidelines (NAS 1972) establish a maximum Heptachlor concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Line of Evidence (LOE) for Decision ID 69983, Heptachlor
Region 7
Wiest Lake
LOE ID:
46312
Pollutant:
Heptachlor
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Warm Freshwater Habitat
Number of Samples:
1
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Heptachlor. One composite (3 fish per composite) was generated from one species: channel catfish. Details of the compositing protocol can be found in the March 2009 report entitled: "Contaminants in Fish from California Lakes and Reservoirs: Technical Report on Year One of a Two-Year Screening Study" (SWAMP, 2009).
No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (Water Quality Control Plan, Colorado River Basin).
National Academy of Science guidelines (NAS 1972) establish a maximum Endrin concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Data for this line of evidence for Wiest Lake was collected at 1 monitoring site [ Wiest Lake_BOG - 723PWT019]. Samples were collected from 1 location. Individual sample locations consisted of an area within a given waterbody from which fish tissue samples were collected. The number of sample locations per waterbody was based on the overall size of the waterbody (SWAMP, 2010). Specifics of individual sampling locations can be found in the supplemental report entitled "Cruise Report for the Surface Waters Ambient Monitoring Program (SWAMP) Bioaccumulation Screening Study in California Lakes and Reservoirs, Sampling Dates: June 2007- March 2008" (SWAMP, 2008).
Temporal Representation:
Data was collected on a single day 11/1/2007.
Environmental Conditions:
Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:
Samples were collected, processed, and analyzed in accordance with the methods described in Quality Assurance Project Plan "Screening Study of Bioaccumulation in California Lakes and Reservoirs." (SWAMP, 2002).
Line of Evidence (LOE) for Decision ID 164477, Endrin
Region 7
Wiest Lake
LOE ID:
46179
Pollutant:
Endrin
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Cold Freshwater Habitat
Number of Samples:
2
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for Endrin. Six composites were generated from two species: black crappie and channel catfish. Composites comprised of 3 - 4 fish for black crappie and 2 -3 fish for channel catfish. Composites collected at the same time on the same day for the same species were averaged in accordance with the listing policy.
No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (Water Quality Control Plan, Colorado River Basin).
National Academy of Science guidelines (NAS 1972) establish a maximum Endrin concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Guideline Reference:
SWAMP Data:
SWAMP
Water Quality Objective/Criterion:
No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (Water Quality Control Plan, Colorado River Basin).
National Academy of Science guidelines (NAS 1972) establish a maximum Heptachlor concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Data for this line of evidence for Wiest Lake was collected at 1 monitoring site [ Wiest Lake_BOG - 723PWT019]. Samples were collected from 1 location. Individual sample locations consisted of an area within a given waterbody from which fish tissue samples were collected. The number of sample locations per waterbody was based on the overall size of the waterbody (SWAMP, 2010). Specifics of individual sampling locations can be found in the supplemental report entitled "Cruise Report for the Surface Waters Ambient Monitoring Program (SWAMP) Bioaccumulation Screening Study in California Lakes and Reservoirs, Sampling Dates: June 2007- March 2008" (SWAMP, 2008).
Temporal Representation:
Data was collected on a single day 11/1/2007.
Environmental Conditions:
Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:
Samples were collected, processed, and analyzed in accordance with the methods described in Quality Assurance Project Plan "Screening Study of Bioaccumulation in California Lakes and Reservoirs." (SWAMP, 2002).
Line of Evidence (LOE) for Decision ID 69983, Heptachlor
Region 7
Wiest Lake
LOE ID:
5624
Pollutant:
Heptachlor
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Total
Beneficial Use:
Warm Freshwater Habitat
Number of Samples:
2
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Two fish fillet samples were taken at 1 location in the lake. The samples were generally collected in 10/1989 and 12/1999. Of these two samples, neither exceeded the NAS tissue guideline (TSMP, 2007).
Basin Plan: No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (CRBRWQCB, 2006).
Line of Evidence (LOE) for Decision ID 164477, Endrin
Region 7
Wiest Lake
LOE ID:
126350
Pollutant:
Endrin
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Cold Freshwater Habitat
Number of Samples:
1
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP RWB7 Monitoring data for Wiest Lake to determine beneficial use support and the results are as follows 0 of the 1 samples exceeded the water quality standard for Endrin. Data were collected for 1 fish species (1 composite(s) of Striped Bass each composed of 3 fish per composite).
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
National Academy of Science guidelines (NAS 1972) establish a maximum Endrin concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Line of Evidence (LOE) for Decision ID 164477, Endrin
Region 7
Wiest Lake
LOE ID:
126569
Pollutant:
Endrin
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Cold Freshwater Habitat
Number of Samples:
4
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed RWB7 TMDL data for Wiest Lake to determine beneficial use support and the results are as follows 0 of the 4 samples exceeded the water quality standard for Endrin. Data were collected for 4 fish species (1 composite(s) of Largemouth Bass each composed of 1 fish per composite, 1 composite(s) of Black Crappie each composed of 5 fish per composite, 1 composite(s) of Common Carp each composed of 5 fish per composite, 1 composite(s) of Largemouth Bass each composed of 5 fish per composite).
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
National Academy of Science guidelines (NAS 1972) establish a maximum Endrin concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Line of Evidence (LOE) for Decision ID 164477, Endrin
Region 7
Wiest Lake
LOE ID:
46305
Pollutant:
Endrin
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:
1
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Endrin. One composite (3 fish per composite) was generated from one species: channel catfish. Details of the compositing protocol can be found in the March 2009 report entitled: "Contaminants in Fish from California Lakes and Reservoirs: Technical Report on Year One of a Two-Year Screening Study" (SWAMP, 2009).
Data Reference:
National Academy of Sciences. Water Quality Criteria 1972. EPA-R3-73-033. Washington, D.C.: U.S. Environmental Protection Agency
Spatial Representation:
Samples were collected from the interior of Wiest Lake.
Temporal Representation:
Two largemouth bass fillet composite samples were collected in 10/1989 and 12/1999.
Environmental Conditions:
QAPP Information:
The field procedures are described in TSMP Data Reports and associated Appendices. CDFG's Laboratory applies Quality Assurance Program Plan procedures for laboratory Quality Assurance and Quality Control, as described in Rasmussen (1993).
Line of Evidence (LOE) for Decision ID 69983, Heptachlor
Region 7
Wiest Lake
LOE ID:
126527
Pollutant:
Heptachlor
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Warm Freshwater Habitat
Number of Samples:
3
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP RWB7 Monitoring data for Wiest Lake to determine beneficial use support and the results are as follows 0 of the 3 samples exceeded the water quality standard for Heptachlor. Data were collected for 3 fish species (1 composite(s) of Channel Catfish each composed of 3 fish per composite, 1 composite(s) of Channel Catfish each composed of 9 fish per composite, 1 composite(s) of Striped Bass each composed of 3 fish per composite).
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
National Academy of Science guidelines (NAS 1972) establish a maximum Heptachlor concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Line of Evidence (LOE) for Decision ID 69983, Heptachlor
Region 7
Wiest Lake
LOE ID:
126547
Pollutant:
Heptachlor
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Warm Freshwater Habitat
Number of Samples:
4
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed RWB7 TMDL data for Wiest Lake to determine beneficial use support and the results are as follows 0 of the 4 samples exceeded the water quality standard for Heptachlor. Data were collected for 4 fish species (1 composite(s) of Largemouth Bass each composed of 1 fish per composite, 1 composite(s) of Black Crappie each composed of 5 fish per composite, 1 composite(s) of Common Carp each composed of 5 fish per composite, 1 composite(s) of Largemouth Bass each composed of 5 fish per composite).
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
National Academy of Science guidelines (NAS 1972) establish a maximum Heptachlor concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (Water Quality Control Plan, Colorado River Basin).
The modified OEHHA Fish Contaminant Goal for endrin in fish tissue is 660 ppb. This screening level assumes an average body weight of 70 kg and a consumption rate of 32 g/day. A cooking reduction factor of 1 is applied for skin-off fillets.
Data for this line of evidence for Wiest Lake was collected at 1 monitoring site [ Wiest Lake_BOG - 723PWT019]. Samples were collected from 1 location. Individual sample locations consisted of an area within a given waterbody from which fish tissue samples were collected. The number of sample locations per waterbody was based on the overall size of the waterbody (SWAMP, 2010). Specifics of individual sampling locations can be found in the supplemental report entitled "Cruise Report for the Surface Waters Ambient Monitoring Program (SWAMP) Bioaccumulation Screening Study in California Lakes and Reservoirs, Sampling Dates: June 2007- March 2008" (SWAMP, 2008).
Temporal Representation:
Data was collected on a single day 11/1/2007.
Environmental Conditions:
Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:
Samples were collected, processed, and analyzed in accordance with the methods described in Quality Assurance Project Plan "Screening Study of Bioaccumulation in California Lakes and Reservoirs." (SWAMP, 2002).
Line of Evidence (LOE) for Decision ID 164477, Endrin
Region 7
Wiest Lake
LOE ID:
46178
Pollutant:
Endrin
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:
2
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for Endrin. Six composites were generated from two species: black crappie and channel catfish. Composites comprised of 3 - 4 fish for black crappie and 2 -3 fish for channel catfish. Composites collected at the same time on the same day for the same species were averaged in accordance with the listing policy.
No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (Water Quality Control Plan, Colorado River Basin).
The modified OEHHA Fish Contaminant Goal for endrin in fish tissue is 660 ppb. This screening level assumes an average body weight of 70 kg and a consumption rate of 32 g/day. A cooking reduction factor of 1 is applied for skin-off fillets.
Line of Evidence (LOE) for Decision ID 164477, Endrin
Region 7
Wiest Lake
LOE ID:
126226
Pollutant:
Endrin
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
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:
Water Board staff assessed RWB7 TMDL data for Wiest Lake to determine beneficial use support and the results are as follows 0 of the 4 samples exceeded the water quality standard for Endrin. Data were collected for 4 fish species (1 composite(s) of Largemouth Bass each composed of 1 fish per composite, 1 composite(s) of Black Crappie each composed of 5 fish per composite, 1 composite(s) of Common Carp each composed of 5 fish per composite, 1 composite(s) of Largemouth Bass each composed of 5 fish per composite).
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
The modified OEHHA Fish Contaminant Goal for endrin in fish tissue is 660 ppb. This screening level assumes an average body weight of 70 kg and a consumption rate of 32 g/day. A cooking reduction factor of 1 is applied for skin-off fillets. (Klasing, S., and R. Brodberg, 2008; USEPA, 2000)
Line of Evidence (LOE) for Decision ID 164477, Endrin
Region 7
Wiest Lake
LOE ID:
126351
Pollutant:
Endrin
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:
1
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP RWB7 Monitoring data for Wiest Lake to determine beneficial use support and the results are as follows 0 of the 1 samples exceeded the water quality standard for Endrin. Data were collected for 1 fish species (1 composite(s) of Striped Bass each composed of 3 fish per composite).
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
The modified OEHHA Fish Contaminant Goal for endrin in fish tissue is 660 ppb. This screening level assumes an average body weight of 70 kg and a consumption rate of 32 g/day. A cooking reduction factor of 1 is applied for skin-off fillets. (Klasing, S., and R. Brodberg, 2008; USEPA, 2000)
Data was collected from 1 station(s) with the station code(s): 723PWT019.
Temporal Representation:
Data for this line of evidence were collected between 2014-10-01 and 2014-10-01
Environmental Conditions:
QAPP Information:
Quality Assurance Program Plan and Standard Operating Procedures for SWAMP program
DECISION ID
164478
Region 7
Wiest Lake
Pollutant:
Heptachlor epoxide
Final Listing Decision:
Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:
Do Not List on 303(d) list (TMDL required list)(2018)
Revision Status
Revised
Impairment from Pollutant or Pollution:
Pollutant
Regional Board Conclusion:
Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available
Regional Board Decision Recommendation:
After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
State Board Review of Regional Board Conclusion and Recommendation:
State Board Decision Recommendation:
After review of 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 it cannot be determined if applicable water quality standards are not being exceeded.
Listing Extent:
Line of Evidence (LOE) for Decision ID 164478, Heptachlor epoxide
Region 7
Wiest Lake
LOE ID:
126195
Pollutant:
Heptachlor epoxide
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:
0
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Waterboard staff assessed SWAMP RWB7 Monitoring data for Wiest Lake to determine beneficial use support and the results are as follows: Zero of Zero samples exceeded the water quality standard for Heptachlor Epoxide. Although data was collected for 3 fish species (1 composite(s) of Channel Catfish each composed of 3 fish per composite, 1 composite(s) of Channel Catfish each composed of 9 fish per composite, 1 composite(s) of Striped Bass each composed of 3 fish per composite), all 3 sample(s) had to be thrown out due to quantitation issues.
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
The modified OEHHA Fish Contaminant Goal for heptachlor epoxide in fish tissue is 0.93 ppb. This screening level assumes an average body weight of 70 kg and a consumption rate of 32 g/day for a 30 year exposure over a 70-year lifetime. This constituent is a carcinogen therefore the risk level is set to one in a million. A cooking reduction factor of 1 is applied for skin-off fillets. (Klasing, S., and R. Brodberg, 2008; OEHHA, 1999)
Line of Evidence (LOE) for Decision ID 164478, Heptachlor epoxide
Region 7
Wiest Lake
LOE ID:
46313
Pollutant:
Heptachlor epoxide
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:
0
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 0 samples exceed the criterion for Heptachlor epoxide. One composite (3 fish per composite) was generated from one species: channel catfish. Details of the compositing protocol can be found in the March 2009 report entitled: "Contaminants in Fish from California Lakes and Reservoirs: Technical Report on Year One of a Two-Year Screening Study" (SWAMP, 2009). One sample was not used in the assessment because the laboratory data reporting limit(s) was above the objective and therefore the results could not be quantified with the level of certainty required by the Listing Policy.
No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (Water Quality Control Plan, Colorado River Basin).
The modified OEHHA Fish Contaminant Goal for heptachlor epoxide in fish tissue is 0.93 ppb. This screening level assumes an average body weight of 70 kg and a consumption rate of 32 g/day for a 30 year exposure over a 70-year lifetime. This constituent is a carcinogen therefore the risk level is set to one in a million. A cooking reduction factor of 1 is applied for skin-off fillets.
Data for this line of evidence for Wiest Lake was collected at 1 monitoring site [ Wiest Lake_BOG - 723PWT019]. Samples were collected from 1 location. Individual sample locations consisted of an area within a given waterbody from which fish tissue samples were collected. The number of sample locations per waterbody was based on the overall size of the waterbody (SWAMP, 2010). Specifics of individual sampling locations can be found in the supplemental report entitled "Cruise Report for the Surface Waters Ambient Monitoring Program (SWAMP) Bioaccumulation Screening Study in California Lakes and Reservoirs, Sampling Dates: June 2007- March 2008" (SWAMP, 2008).
Temporal Representation:
Data was collected on a single day 11/1/2007.
Environmental Conditions:
Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:
Samples were collected, processed, and analyzed in accordance with the methods described in Quality Assurance Project Plan "Screening Study of Bioaccumulation in California Lakes and Reservoirs." (SWAMP, 2002).
Line of Evidence (LOE) for Decision ID 164478, Heptachlor epoxide
Region 7
Wiest Lake
LOE ID:
126156
Pollutant:
Heptachlor epoxide
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:
0
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Waterboard staff assessed RWB7 TMDL data for Wiest Lake to determine beneficial use support and the results are as follows: Zero of Zero samples exceeded the water quality standard for Heptachlor Epoxide. Although data was collected for 4 fish species (1 composite(s) of Black Crappie each composed of 5 fish per composite, 1 composite(s) of Common Carp each composed of 5 fish per composite, 1 composite(s) of Largemouth Bass each composed of 1 fish per composite, 1 composite(s) of Largemouth Bass each composed of 5 fish per composite), all 4 sample(s) had to be thrown out due to quantitation issues.
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
The modified OEHHA Fish Contaminant Goal for heptachlor epoxide in fish tissue is 0.93 ppb. This screening level assumes an average body weight of 70 kg and a consumption rate of 32 g/day for a 30 year exposure over a 70-year lifetime. This constituent is a carcinogen therefore the risk level is set to one in a million. A cooking reduction factor of 1 is applied for skin-off fillets. (Klasing, S., and R. Brodberg, 2008; OEHHA, 1999)
Line of Evidence (LOE) for Decision ID 164477, Endrin
Region 7
Wiest Lake
LOE ID:
126348
Pollutant:
Endrin
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Warm Freshwater Habitat
Number of Samples:
1
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP RWB7 Monitoring data for Wiest Lake to determine beneficial use support and the results are as follows 0 of the 1 samples exceeded the water quality standard for Endrin. Data were collected for 1 fish species (1 composite(s) of Striped Bass each composed of 3 fish per composite).
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
National Academy of Science guidelines (NAS 1972) establish a maximum Endrin concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Line of Evidence (LOE) for Decision ID 164477, Endrin
Region 7
Wiest Lake
LOE ID:
126232
Pollutant:
Endrin
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Warm Freshwater Habitat
Number of Samples:
4
Number of Exceedancess.ca.gov/water_issues/programs/tmdl/records/state_board/2008/ref2456.pdf" >Development of Fish Contaminant Goals and Advisory Tissue Levels for Common Contaminants in California Sport Fish: Chlordane, DDTs, Dieldrin, Methylmercury, PCBs, Selenium, and Toxaphene
Line of Evidence (LOE) for Decision ID 164478, Heptachlor epoxide
Region 7
Wiest Lake
LOE ID:
46210
Pollutant:
Heptachlor epoxide
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:
0
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 0 samples exceed the criterion for Heptachlor epoxide. Six composites were generated from two species: black crappie and channel catfish. Composites comprised of 3 - 4 fish for black crappie and 2 -3 fish for channel catfish. Six samples were not used in the assessment because the laboratory data reporting limit(s) was above the objective and therefore the results could not be quantified with the level of certainty required by the Listing Policy.
No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (Water Quality Control Plan, Colorado River Basin).
The modified OEHHA Fish Contaminant Goal for heptachlor epoxide in fish tissue is 0.93 ppb. This screening level assumes an average body weight of 70 kg and a consumption rate of 32 g/day for a 30 year exposure over a 70-year lifetime. This constituent is a carcinogen therefore the risk level is set to one in a million. A cooking reduction factor of 1 is applied for skin-off fillets.
Water Board staff assessed RWB7 TMDL data for Wiest Lake to determine beneficial use support and the results are as follows 0 of the 4 samples exceeded the water quality standard for Endrin. Data were collected for 4 fish species (1 composite(s) of Largemouth Bass each composed of 1 fish per composite, 1 composite(s) of Black Crappie each composed of 5 fish per composite, 1 composite(s) of Common Carp each composed of 5 fish per composite, 1 composite(s) of Largemouth Bass each composed of 5 fish per composite).
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
National Academy of Science guidelines (NAS 1972) establish a maximum Endrin concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Line of Evidence (LOE) for Decision ID 164477, Endrin
Region 7
Wiest Lake
LOE ID:
46307
Pollutant:
Endrin
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Warm Freshwater Habitat
Number of Samples:
1
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Endrin. One composite (3 fish per composite) was generated from one species: channel catfish. Details of the compositing protocol can be found in the March 2009 report entitled: "Contaminants in Fish from California Lakes and Reservoirs: Technical Report on Year One of a Two-Year Screening Study" (SWAMP, 2009).
Line of Evidence (LOE) for Decision ID 164478, Heptachlor epoxide
Region 7
Wiest Lake
LOE ID:
46314
Pollutant:
Heptachlor epoxide
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Cold Freshwater Habitat
Number of Samples:
1
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Heptachlor epoxide. One composite (3 fish per composite) was generated from one species: channel catfish. Details of the compositing protocol can be found in the March 2009 report entitled: "Contaminants in Fish from California Lakes and Reservoirs: Technical Report on Year One of a Two-Year Screening Study" (SWAMP, 2009).
No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (Water Quality Control Plan, Colorado River Basin).
National Academy of Science guidelines (NAS 1972) establish a maximum Heptachlor Epoxide concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Data for this line of evidence for Wiest Lake was collected at 1 monitoring site [ Wiest Lake_BOG - 723PWT019]. Samples were collected from 1 location. Individual sample locations consisted of an area within a given waterbody from which fish tissue samples were collected. The number of sample locations per waterbody was based on the overall size of the waterbody (SWAMP, 2010). Specifics of individual sampling locations can be found in the supplemental report entitled "Cruise Report for the Surface Waters Ambient Monitoring Program (SWAMP) Bioaccumulation Screening Study in California Lakes and Reservoirs, Sampling Dates: June 2007- March 2008" (SWAMP, 2008).
Temporal Representation:
Data was collected on a single day 11/1/2007.
Environmental Conditions:
Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:
Samples were collected, processed, and analyzed in accordance with the methods described in Quality Assurance Project Plan "Screening Study of Bioaccumulation in California Lakes and Reservoirs." (SWAMP, 2002).
No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (Water Quality Control Plan, Colorado River Basin).
National Academy of Science guidelines (NAS 1972) establish a maximum Endrin concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Data for this line of evidence for Wiest Lake was collected at 1 monitoring site [ Wiest Lake_BOG - 723PWT019]. Samples were collected from 1 location. Individual sample locations consisted of an area within a given waterbody from which fish tissue samples were collected. The number of sample locations per waterbody was based on the overall size of the waterbody (SWAMP, 2010). Specifics of individual sampling locations can be found in the supplemental report entitled "Cruise Report for the Surface Waters Ambient Monitoring Program (SWAMP) Bioaccumulation Screening Study in California Lakes and Reservoirs, Sampling Dates: June 2007- March 2008" (SWAMP, 2008).
Temporal Representation:
Data was collected on a single day 11/1/2007.
Environmental Conditions:
Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:
Samples were collected, processed, and analyzed in accordance with the methods described in Quality Assurance Project Plan "Screening Study of Bioaccumulation in California Lakes and Reservoirs." (SWAMP, 2002).
Line of Evidence (LOE) for Decision ID 164477, Endrin
Region 7
Wiest Lake
LOE ID:
46180
Pollutant:
Endrin
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Warm Freshwater Habitat
Number of Samples:
2
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for Endrin. Six composites were generated from two species: black crappie and channel catfish. Composites comprised of 3 - 4 fish for black crappie and 2 -3 fish for channel catfish. Composites collected at the same time on the same day for the same species were averaged in accordance with the listing policy.
No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (Water Quality Control Plan, Colorado River Basin).
National Academy of Science guidelines (NAS 1972) establish a maximum Endrin concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxiram. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version)
Line of Evidence (LOE) for Decision ID 164478, Heptachlor epoxide
Region 7
Wiest Lake
LOE ID:
126293
Pollutant:
Heptachlor epoxide
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Cold Freshwater Habitat
Number of Samples:
4
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed RWB7 TMDL data for Wiest Lake to determine beneficial use support and the results are as follows 0 of the 4 samples exceeded the water quality standard for Heptachlor Epoxide. Data were collected for 4 fish species (1 composite(s) of Largemouth Bass each composed of 1 fish per composite, 1 composite(s) of Black Crappie each composed of 5 fish per composite, 1 composite(s) of Common Carp each composed of 5 fish per composite, 1 composite(s) of Largemouth Bass each composed of 5 fish per composite).
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
National Academy of Science guidelines (NAS 1972) establish a maximum Heptachlor Epoxide concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Line of Evidence (LOE) for Decision ID 164477, Endrin
Region 7
Wiest Lake
LOE ID:
5554
Pollutant:
Endrin
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Total
Beneficial Use:
Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:
2
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Two fish fillet samples were taken at 1 location in the lake. The samples were generally collected in 10/1989 and 12/1999. Of these two samples, neither exceeded the OEHHA Screening Value (TSMP, 2007).
Basin Plan: No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (CRBRWQCB, 2006).
Samples were collected from the interior of Wiest Lake.
Temporal Representation:
Two largemouth bass fillet composite samples were collected in 10/1989 and 12/1999.
Environmental Conditions:
QAPP Information:
The field procedures are described in TSMP Data Reports and associated Appendices. CDFG's Laboratory applies Quality Assurance Program Plan procedures for laboratory Quality Assurance and Quality Control, as described in Rasmussen (1993).
Line of Evidence (LOE) for Decision ID 164477, Endrin
Region 7
Wiest Lake
LOE ID:
5614
Pollutant:
Endrin
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Total
Beneficial Use:
Warm Freshwater Habitat
Number of Samples:
2
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Two fish fillet samples were taken at 1 location in the lake. The samples were generally collected in 10/1989 and 12/1999. Of these two samples, neither exceeded the NAS tissue guideline (TSMP, 2007).
Basin Plan: No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (CRBRWQCB, 2006).
Samples were collected from the interior of Wiest Lake.
Temporal Representation:
Two largemouth bass fillet composite samples were collected in 10/1989 and 12/1999.
Environmental Conditions:
QAPP Information:
The field procedures are described in TSMP Data Reports and associated Appendices. CDFG's Laboratory applies Quality Assurance Program Plan procedures for laboratory Quality Assurance and Quality Control, as described in Rasmussen (1993).
Water Board staff assessed SWAMP RWB7 Monitoring data for Wiest Lake to determine beneficial use support and the results are as follows 0 of the 3 samples exceeded the water quality standard for Heptachlor Epoxide. Data were collected for 3 fish species (1 composite(s) of Channel Catfish each composed of 3 fish per composite, 1 composite(s) of Channel Catfish each composed of 9 fish per composite, 1 composite(s) of Striped Bass each composed of 3 fish per composite).
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
National Academy of Science guidelines (NAS 1972) establish a maximum Heptachlor Epoxide concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Line of Evidence (LOE) for Decision ID 164478, Heptachlor epoxide
Region 7
Wiest Lake
LOE ID:
46211
Pollutant:
Heptachlor epoxide
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Cold Freshwater Habitat
Number of Samples:
2
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for Heptachlor epoxide. Six composites were generated from two species: black crappie and channel catfish. Composites comprised of 3 - 4 fish for black crappie and 2 -3 fish for channel catfish. Composites collected at the same time on the same day for the same species were averaged in accordance with the listing policy.
No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (Water Quality Control Plan, Colorado River Basin).
Do Not List on 303(d) list (TMDL required list)(2018)
Revision Status
Revised
Impairment from Pollutant or Pollution:
Pollutant
Regional Board Conclusion:
Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available
Regional Board Decision Recommendation:
After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
State Board Review of Regional Board Conclusion and Recommendation:
State Board Decision Recommendation:
After review of 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 it cannot be determined if applicable water quality standards are not being exceeded.
Listing Extent:
Line of Evidence (LOE) for Decision ID 164484, Ethion
Region 7
Wiest Lake
LOE ID:
5555
Pollutant:
Ethion
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Total
Beneficial Use:
Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:
2
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Two fish fillet samples were taken at 1 location in the lake. The samples were generally collected in 10/1989 and 12/1999. Of these two samples, neither exceeded the OEHHA Screening Value (TSMP, 2007).
Basin Plan: No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (CRBRWQCB, 2006).
Samples were collected from the interior of Wiest Lake.
Temporal Representation:
Two largemouth bass fillet composite samples were collected in 10/1989 and 12/1999.
Environmental Conditions:
QAPP Information:
The field procedures are described in TSMP Data Reports and associated Appendices. CDFG's Laboratory applies Quality Assurance Program Plan procedures for laboratory Quality Assurance and Quality Control, as described in Rasmussen (1993).
National Academy of Science guidelines (NAS 1972) establish a maximum Heptachlor Epoxide concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Line of Evidence (LOE) for Decision ID 164478, Heptachlor epoxide
Region 7
Wiest Lake
LOE ID:
5633
Pollutant:
Heptachlor epoxide
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Total
Beneficial Use:
Warm Freshwater Habitat
Number of Samples:
2
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Two fish fillet samples were taken at 1 location in the lake. The samples were generally collected in 10/1989 and 12/1999. Of these two samples, neither exceeded the NAS tissue guideline (TSMP, 2007).
Basin Plan: No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (CRBRWQCB, 2006).
Samples were collected from the interior of Wiest Lake.
Temporal Representation:
Two largemouth bass fillet composite samples were collected in 10/1989 and 12/1999.
Environmental Conditions:
QAPP Information:
The field procedures are described in TSMP Data Reports and associated Appendices. CDFG's Laboratory applies Quality Assurance Program Plan procedures for laboratory Quality Assurance and Quality Control, as described in Rasmussen (1993).
Line of Evidence (LOE) for Decision ID 164478, Heptachlor epoxide
Region 7
Wiest Lake
LOE ID:
5556
Pollutant:
Heptachlor epoxide
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Total
Beneficial Use:
Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:
1
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Two fish fillet samples were taken at 1 location in lake. One fish fillet sample result could not be used in this assessment because the sample results were non-detect and the detection limit was above the criteria concentrations. The 1 fish fillet sample that was acceptable was generally collected in 12/1999. This sample did not exceeded the OEHHA Screening Value. (TSMP, 2007).
Basin Plan: No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (CRBRWQCB, 2006).
Samples were collected from the interior of Wiest Lake.
Temporal Representation:
Two largemouth bass fillet composite samples were collected in 10/1989 and 12/1999.
Environmental Conditions:
QAPP Information:
The field procedures are described in TSMP Data Reports and associated Appendices. CDFG's Laboratory applies Quality Assurance Program Plan procedures for laboratory Quality Assurance and Quality Control, as described in Rasmussen (1993).
QAPP Information Reference(s):
Line of Evidence (LOE) for Decision ID 164478, Heptachlor epoxide
Region 7
Wiest Lake
LOE ID:
46315
Pollutant:
Heptachlor epoxide
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Warm Freshwater Habitat
Number of Samples:
1
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Heptachlor epoxide. One composite (3 fish per composite) was generated from one speci
DECISION ID
69983
Region 7
Wiest Lake
Pollutant:
Heptachlor
Final Listing Decision:
Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:
Do Not List on 303(d) list (TMDL required list)(2016)
Revision Status
Revised
Impairment from Pollutant or Pollution:
Pollutant
Regional Board Conclusion:
This pollutant is being considered for placement on the section 303(d) list under section 3.5 of the Listing Policy. Under section 3.5 a single line of evidence is necessary to assess listing status.
Nine lines of evidence are available in the administrative record to assess this pollutant.
None of samples exceeds the water quality objectives.
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 ten fish fillet fraction and none of two total fraction fish tissue samples exceeded the NAS fish tissue guideline and the sample sizes are insufficient to determine with the power and confidence of the Listing Policy if standards are not met. A minimum of 16 samples is needed for application of table 3.1.
4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.
Regional Board Decision Recommendation:
After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
State Board Review of Regional Board Conclusion and Recommendation:
State Board Decision Recommendation:
Listing Extent:
Line of Evidence (LOE) for Decision ID 69983, Heptachlor
Region 7
Wiest Lake
LOE ID:
46196
Pollutant:
Heptachlor
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Cold Freshwater Habitat
Number of Samples:
2
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for Heptachlor. Six composites were generated from two species: black crappie and channel catfish. Composites comprised of 3 - 4 fish for black crappie and 2 -3 fish for channel catfish. Composites collected at the same time on the same day for the same species were averaged in accordance with the listing policy.
No individual chemical or combination of chemicals shall be pes: channel catfish. Details of the compositing protocol can be found in the March 2009 report entitled: "Contaminants in Fish from California Lakes and Reservoirs: Technical Report on Year One of a Two-Year Screening Study" (SWAMP, 2009).
No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (Water Quality Control Plan, Colorado River Basin).
National Academy of Science guidelines (NAS 1972) establish a maximum Heptachlor Epoxide concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Data for this line of evidence for Wiest Lake was collected at 1 monitoring site [ Wiest Lake_BOG - 723PWT019]. Samples were collected from 1 location. Individual sample locations consisted of an area within a given waterbody from which fish tissue samples were collected. The number of sample locations per waterbody was based on the overall size of the waterbody (SWAMP, 2010). Specifics of individual sampling locations can be found in the supplemental report entitled "Cruise Report for the Surface Waters Ambient Monitoring Program (SWAMP) Bioaccumulation Screening Study in California Lakes and Reservoirs, Sampling Dates: June 2007- March 2008" (SWAMP, 2008).
Temporal Representation:
Data was collected on a single day 11/1/2007.
Environmental Conditions:
Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:
Samples were collected, processed, and analyzed in accordance with the methods described in Quality Assurance Project Plan "Screening Study of Bioaccumulation in California Lakes and Reservoirs." (SWAMP, 2002).
Line of Evidence (LOE) for Decision ID 164478, Heptachlor epoxide
Region 7
Wiest Lake
LOE ID:
126194
Pollutant:
Heptachlor epoxide
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Warm Freshwater Habitat
Number of Samples:
3
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP RWB7 Monitoring data for Wiest Lake to determine beneficial use support and the results are as follows 0 of the 3 samples exceeded the water quality standard for Heptachlor Epoxide. Data were collected for 3 fish species (1 composite(s) of Channel Catfish each composed of 3 fish per composite, 1 composite(s) of Channel Catfish each composed of 9 fish per compositeresent in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (Water Quality Control Plan, Colorado River Basin).
National Academy of Science guidelines (NAS 1972) establish a maximum Heptachlor concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Line of Evidence (LOE) for Decision ID 69983, Heptachlor
Region 7
Wiest Lake
LOE ID:
46311
Pollutant:
Heptachlor
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Cold Freshwater Habitat
Number of Samples:
1
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Heptachlor. One composite (3 fish per composite) was generated from one species: channel catfish. Details of the compositing protocol can be found in the March 2009 report entitled: "Contaminants in Fish from California Lakes and Reservoirs: Technical Report on Year One of a Two-Year Screening Study" (SWAMP, 2009).
No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (Water Quality Control Plan, Colorado River Basin).
National Academy of Science guidelines (NAS 1972) establish a maximum Heptachlor concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Data for this line of evidence for Wiest Lake was collected at 1 monitoring site [ Wiest Lake_BOG - 723PWT019]. Samples were collected from 1 location. Individual sample locations consisted of an area within a given waterbody from which fish tissue samples were collected. The number of sample locations per waterbody was based on the overall size of the waterbody (SWAMP, 2010). Specifics of individual sampling locations can be found in the supplemental report entitled "Cruise Report for the Surface Waters Ambient Monitoring Program (SWAMP) Bioaccumulation Screening Study in California Lakes and Reservoirs, Sampling Dates: June 2007- March 2008" (SWAMP, 2008).
Temporal Representation:
Data was collected on a single day 11/1/2007.
Environmental Conditions:
Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:
Samples were collected, processed, and analyzed in accordance with the methods described in Quality Assurance Project Plan "Screening Study of Bioaccumulation in California Lakes and Reservoirs." (SWAMP, 2002).
Line of Evidence (LOE) for Decision ID 69983, Heptachlor
Region 7
Wiest Lake
LOE ID:
126549
Pollutant:
Heptachlor
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Cold Freshwater Habitat
Number of Samples:
3
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP RWB7 Monitoring data for Wiest Lake to determine beneficial use support and the results are as follows 0 of the 3 samples exceeded the water quality standard for Heptachlor. Data were collected for 3 fish species (1 composite(s) of Channel Catfish each composed of 3 fish per composite, 1 composite(s) of Channel Catfish each composed of 9 fish per composite, 1 composite(s) of Striped Bass each composed of 3 fish per composite).
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
National Academy of Science guidelines (NAS 1972) establish a maximum Heptachlor concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
National Academy of Science guidelines (NAS 1972) establish a maximum Heptachlor Epoxide concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Line of Evidence (LOE) for Decision ID 164478, Heptachlor epoxide
Region 7
Wiest Lake
LOE ID:
46212
Pollutant:
Heptachlor epoxide
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Warm Freshwater Habitat
Number of Samples:
2
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for Heptachlor epoxide. Six composites were generated from two species: black crappie and channel catfish. Composites comprised of 3 - 4 fish for black crappie and 2 -3 fish for channel catfish. Composites collected at the same time on the same day for the same species were averaged in accordance with the listing policy.
No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (Water Quality Control Plan, Colorado River Basin).
National Academy of Science guidelines (NAS 1972) establish a maximum Heptachlor Epoxide concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Line of Evidence (LOE) for Decision ID 164478, Heptachlor epoxide
Region 7
Wiest Lake
LOE ID:
126555
Pollutant:
Heptachlor epoxide
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Warm Freshwater Habitat
Number of Samples:
4
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed RWB7 TMDL data for Wiest Lake to determine beneficial use support and the results are as follows 0 of the 4 samples exceeded the water quality standard for Heptachlor Epoxide. Data were collected for 4 fish species (1 composite(s) of Largemouth Bass each composed of 1 fish per composite, 1 composite(s) of Black Crappie each composed of 5 fish per composite, 1 composite(s) of Common Carp each composed of 5 fish per composite, 1 composite(s) of Largemouth Bass each composed of 5 fish per composite).
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
National Academy of Science guidelines (NAS 1972) establish a maximum Heptachlor Epoxide concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
ds/state_board/2017/ref4461.zip" >Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program
Line of Evidence (LOE) for Decision ID 69983, Heptachlor
Region 7
Wiest Lake
LOE ID:
126411
Pollutant:
Heptachlor
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Cold Freshwater Habitat
Number of Samples:
4
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed RWB7 TMDL data for Wiest Lake to determine beneficial use support and the results are as follows 0 of the 4 samples exceeded the water quality standard for Heptachlor. Data were collected for 4 fish species (1 composite(s) of Largemouth Bass each composed of 1 fish per composite, 1 composite(s) of Black Crappie each composed of 5 fish per composite, 1 composite(s) of Common Carp each composed of 5 fish per composite, 1 composite(s) of Largemouth Bass each composed of 5 fish per composite).
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
National Academy of Science guidelines (NAS 1972) establish a maximum Heptachlor concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Line of Evidence (LOE) for Decision ID 69983, Heptachlor
Region 7
Wiest Lake
LOE ID:
46209
Pollutant:
Heptachlor
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Warm Freshwater Habitat
Number of Samples:
2
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for Heptachlor. Six composites were generated from two species: black crappie and channel catfish. Composites comprised of 3 - 4 fish for black crappie and 2 -3 fish for channel catfish. Composites collected at the same time on the same day for the same species were averaged in accordance with the listing policy.
No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (Water Quality Control Plan, Colorado River Basin).
National Academy of Science guidelines (NAS 1972) establish a maximum Heptachlor concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Line of Evidence (LOE) for Decision ID 69983, Heptachlor
Region 7
Wiest Lake
LOE ID:
46312
Pollutant:
Heptachlor
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Warm Freshwater Habitat
Number of Samples:
1
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Heptachlor. One composite (3 fish per composite) was generated from one species: channel catfish. Details of the compositing protocol can be found in the March 2009 report entitled: "Contaminants in Fish from California Lakes and Reservoirs: Technical Report on Year One of a Two-Year Screening Study" (SWAMP, 2009).
No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (Water Quality Control Plan, Colorado River Basin).
National Academy of Science guidelines (NAS 1972) establish a maximum Heptachlor concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Data for this line of evidence for Wiest Lake was collected at 1 monitoring site [ Wiest Lake_BOG - 723PWT019]. Samples were collected from 1 location. Individual sample locations consisted of an area within a given waterbody from which fish tissue samples were collected. The number of sample locations per waterbody was based on the overall size of the waterbody (SWAMP, 2010). Specifics of individual sampling locations can be found in the supplemental report entitled "Cruise Report for the Surface Waters Ambient Monitoring Program (SWAMP) Bioaccumulation Screening Study in California Lakes and Reservoirs, Sampling Dates: June 2007- March 2008" (SWAMP, 2008).
Temporal Representation:
Data was collected on a single day 11/1/2007.
Environmental Conditions:
Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:
Samples were collected, processed, and analyzed in accordance with the methods described in Quality Assurance Project Plan "Screening Study of Bioaccumulation in California Lakes and Reservoirs." (SWAMP, 2002).
Line of Evidence (LOE) for Decision ID 69983, Heptachlor
Region 7
Wiest Lake
LOE ID:
5624
Pollutant:
Heptachlor
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Total
Beneficial Use:
Warm Freshwater Habitat
Number of Samples:
2
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Two fish fillet samples were taken at 1 location in the lake. The samples were generally collected in 10/1989 and 12/1999. Of these two samples, neither exceeded the NAS tissue guideline (TSMP, 2007).
Basin Plan: No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (CRBRWQCB, 2006).
National Academy of Science (NAS) tissue guideline of 100 ug/kg for the protection of aquatic life uses (NAS, 1973).
Guideline Reference:
DECISION ID
164479
Region 7
Wiest Lake
Pollutant:
Hexachlorobenzene/ HCB
Final Listing Decision:
Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:
Do Not List on 303(d) list (TMDL required list)(2018)
Revision Status
Revised
Impairment from Pollutant or Pollution:
Pollutant
Regional Board Conclusion:
Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available
Regional Board Decision Recommendation:
After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
State Board Review of Regional Board Conclusion and Recommendation:
State Board Decision Recommendation:
After review of 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 it cannot be determined if applicable water quality standards are not being exceeded.
Listing Extent:
Line of Evidence (LOE) for Decision ID 164479, Hexachlorobenzene/ HCB
Region 7
Wiest Lake
LOE ID:
126157
Pollutant:
Hexachlorobenzene/ HCB
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
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:
Water Board staff assessed RWB7 TMDL data for Wiest Lake to determine beneficial use support and the results are as follows 0 of the 4 samples exceeded the water quality standard for Hexachlorobenzene. Data were collected for 4 fish species (1 composite(s) of Largemouth Bass each composed of 1 fish per composite, 1 composite(s) of Black Crappie each composed of 5 fish per composite, 1 composite(s) of Common Carp each composed of 5 fish per composite, 1 composite(s) of Largemouth Bass each composed of 5 fish per composite).
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
The modified OEHHA Fish Contaminant Goal for hexachlorobenzene in fish tissue is 2.8 ppb. This screening level assumes an average body weight of 70 kg and a consumption rate of 32 g/day for a 30 year exposure over a 70-year lifetime. This constituent is a carcinogen therefore the risk level is set to one in a million. A cooking reduction factor of 1 is applied for skin-off fillets. (Klasing, S., and R. Brodberg, 2008; OEHHA, 2005)
Line of Evidence (LOE) for Decision ID 164479, Hexachlorobenzene/ HCB
Region 7
Wiest Lake
LOE ID:
46316
Pollutant:
Hexachlorobenzene/ HCB
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:
1
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Hexachlorobenzene. One composite (3 fish per composite) was generated from one species: channel catfish. Details of the compositing protocol can be found in the March 2009 report entitled: "Contaminants in Fish from California Lakes and Reservoirs: Technical Report on Year One of a Two-Year Screening Study" (SWAMP, 2009).
No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (Water Quality Control Plan, Colorado River Basin).
The modified OEHHA Fish Contaminant Goal for hexachlorobenzene in fish tissue is 2.8 ppb. This screening level assumes an average body weight of 70 kg and a consumption rate of 32 g/day for a 30 year exposure over a 70-year lifetime. This constituent is a carcinogen therefore the risk level is set to one in a million. A cooking reduction factor of 1 is applied for skin-off fillets.
Data for this line of evidence for Wiest Lake was collected at 1 monitoring site [ Wiest Lake_BOG - 723PWT019]. Samples were collected from 1 location. Individual sample locations consisted of an area within a given waterbody from which fish tissue samples were collected. The number of sample locations per waterbody was based on the overall size of the waterbody (SWAMP, 2010). Specifics of individual sampling locations can be found in the supplemental report entitled "Cruise Report for the Surface Waters Ambient Monitoring Program (SWAMP) Bioaccumulation Screening Study in California Lakes and Reservoirs, Sampling Dates: June 2007- March 2008" (SWAMP, 2008).
Temporal Representation:
Data was collected on a single day 11/1/2007.
Environmental Conditions:
Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:
Samples were collected, processed, and analyzed in accordance with the methods described in Quality Assurance Project Plan "Screening Study of Bioaccumulation in California Lakes and Reservoirs." (SWAMP, 2002).
Line of Evidence (LOE) for Decision ID 164479, Hexachlorobenzene/ HCB
Region 7
Wiest Lake
LOE ID:
46224
Pollutant:
Hexachlorobenzene/ HCB
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:
2
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for Hexachlorobenzene. Six composites were generated from two species: black crappie and channel catfish. Composites comprised of 3 - 4 fish for black crappie and 2 -3 fish for channel catfish. Composites collected at the same time on the same day for the same species were averaged in accordance with the listing policy.
No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (Water Quality Control Plan, Colorado River Basin).
The modified OEHHA Fish Contaminant Goal for hexachlorobenzene in fish tissue is 2.8 ppb. This screening level assumes an average body weight of 70 kg and a consumption rate of 32 g/day for a 30 year exposure over a 70-year lifetime. This constituent is a carcinogen therefore the risk level is set to one in a million. A cooking reduction factor of 1 is applied for skin-off fillets.
National Academy of Sciences. Water Quality Criteria 1972. EPA-R3-73-033. Washington, D.C.: U.S. Environmental Protection Agency
Spatial Representation:
Samples were collected from the interior of Wiest Lake.
Temporal Representation:
Two largemouth bass fillet composite samples were collected in 10/1989 and 12/1999.
Environmental Conditions:
QAPP Information:
The field procedures are described in TSMP Data Reports and associated Appendices. CDFG's Laboratory applies Quality Assurance Program Plan procedures for laboratory Quality Assurance and Quality Control, as described in Rasmussen (1993).
Line of Evidence (LOE) for Decision ID 69983, Heptachlor
Region 7
Wiest Lake
LOE ID:
126527
Pollutant:
Heptachlor
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Warm Freshwater Habitat
Number of Samples:
3
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP RWB7 Monitoring data for Wiest Lake to determine beneficial use support and the results are as follows 0 of the 3 samples exceeded the water quality standard for Heptachlor. Data were collected for 3 fish species (1 composite(s) of Channel Catfish each composed of 3 fish per composite, 1 composite(s) of Channel Catfish each composed of 9 fish per composite, 1 composite(s) of Striped Bass each composed of 3 fish per composite).
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
National Academy of Science guidelines (NAS 1972) establish a maximum Heptachlor concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Line of Evidence (LOE) for Decision ID 69983, Heptachlor
Region 7
Wiest Lake
LOE ID:
126547
Pollutant:
Heptachlor
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Warm Freshwater Habitat
Number of Samples:
4
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed RWB7 TMDL data for Wiest Lake to determine beneficial use support and the results are as follows 0 of the 4 samples exceeded the water quality standard for Heptachlor. Data were collected for 4 fish species (1 composite(s) of Largemouth Bass each composed of 1 fish per composite, 1 composite(s) of Black Crappie each composed of 5 fish per composite, 1 composite(s) of Common Carp each composed of 5 fish per composite, 1 composite(s) of Largemouth Bass each composed of 5 fish per composite).
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
National Academy of Science guidelines (NAS 1972) establish a maximum Heptachlor concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Line of Evidence (LOE) for Decision ID 164479, Hexachlorobenzene/ HCB
Region 7
Wiest Lake
LOE ID:
126658
Pollutant:
Hexachlorobenzene/ HCB
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:
3
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP RWB7 Monitoring data for Wiest Lake to determine beneficial use support and the results are as follows 0 of the 3 samples exceeded the water quality standard for Hexachlorobenzene. Data were collected for 3 fish species (1 composite(s) of Channel Catfish each composed of 3 fish per composite, 1 composite(s) of Channel Catfish each composed of 9 fish per composite, 1 composite(s) of Striped Bass each composed of 3 fish per composite).
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
The modified OEHHA Fish Contaminant Goal for hexachlorobenzene in fish tissue is 2.8 ppb. This screening level assumes an average body weight of 70 kg and a consumption rate of 32 g/day for a 30 year exposure over a 70-year lifetime. This constituent is a carcinogen therefore the risk level is set to one in a million. A cooking reduction factor of 1 is applied for skin-off fillets. (Klasing, S., and R. Brodberg, 2008; OEHHA, 2005)
Line of Evidence (LOE) for Decision ID 164479, Hexachlorobenzene/ HCB
Region 7
Wiest Lake
LOE ID:
5557
Pollutant:
Hexachlorobenzene/ HCB
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Total
Beneficial Use:
Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:
2
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Two fish fillet samples were taken at 1 location in the lake. The samples were generally collected in 10/1989 and 12/1999. Of these two samples, neither exceeded the OEHHA Screening Value (TSMP, 2007).
Basin Plan: No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (CRBRWQCB, 2006).
Samples were collected from the interior of Wiest Lake.
Temporal Representation:
Two largemouth bass fillet composite samples were collected in 10/1989 and 12/1999.
Environmental Conditions:
QAPP Information:
The field procedures are described in TSMP Data Reports and associated Appendices. CDFG's Laboratory applies Quality Assurance Program Plan procedures for laboratory Quality Assurance and Quality Control, as described in Rasmussen (1993).
Do Not List on 303(d) list (TMDL required list)(2018)
Revision Status
Revised
Impairment from Pollutant or Pollution:
Pollutant
Regional Board Conclusion:
Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available
Regional Board Decision Recommendation:
After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
State Board Review of Regional Board Conclusion and Recommendation:
State Board Decision Recommendation:
After review of 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 it cannot be determined if applicable water quality standards are not being exceeded.
Listing Extent:
Line of Evidence (LOE) for Decision ID 164478, Heptachlor epoxide
Region 7
Wiest Lake
LOE ID:
126195
Pollutant:
Heptachlor epoxide
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:
0
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Waterboard staff assessed SWAMP RWB7 Monitoring data for Wiest Lake to determine beneficial use support and the results are as follows: Zero of Zero samples exceeded the water quality standard for Heptachlor Epoxide. Although data was collected for 3 fish species (1 composite(s) of Channel Catfish each composed of 3 fish per composite, 1 composite(s) of Channel Catfish each composed of 9 fish per composite, 1 composite(s) of Striped Bass each composed of 3 fish per composite), all 3 sample(s) had to be thrown out due to quantitation issues.
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
The modified OEHHA Fish Contaminant Goal for heptachlor epoxide in fish tissue is 0.93 ppb. This screening level assumes an average body weight of 70 kg and a consumption rate of 32 g/day for a 30 year exposure over a 70-year lifetime. This constituent is a carcinogen therefore the risk level is set to one in a million. A cooking reduction factor of 1 is applied for skin-off fillets. (Klasing, S., and R. Brodberg, 2008; OEHHA, 1999)
Line of Evidence (LOE) for Decision ID 164478, Heptachlor epoxide
Region 7
Wiest Lake
LOE ID:
46313
Pollutant:
Heptachlor epoxide
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:
0
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 0 samples exceed the criterion for Heptachlor epoxide. One composite (3 fish per composite) was generated from one species: channel catfish. Details of the compositing protocol can be found in the March 2009 report entitled: "Contaminants in Fish from California Lakes and Reservoirs: Technical Report on Year One of a Two-Year Screening Study" (SWAMP, 2009). One sample was not used in the assessment because the laboratory data reporting limit(s) was above the objective and therefore the results could not be quantified with the level of certainty required by the Listing Policy.
No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (Water Quality Control Plan, Colorado River Basin).
The modified OEHHA Fish Contaminant Goal for heptachlor epoxide in fish tissue is 0.93 ppb. This screening level assumes an average body weight of 70 kg and a consumption rate of 32 g/day for a 30 year exposure over a 70-year lifetime. This constituent is a carcinogen therefore the risk level is set to one in a million. A cooking reduction factor of 1 is applied for skin-off fillets.
Data for this line of evidence for Wiest Lake was collected at 1 monitoring site [ Wiest Lake_BOG - 723PWT019]. Samples were collected from 1 location. Individual sample locations consisted of an area within a given waterbody from which fish tissue samples were collected. The number of sample locations per waterbody was based on the overall size of the waterbody (SWAMP, 2010). Specifics of individual sampling locations can be found in the supplemental report entitled "Cruise Report for the Surface Waters Ambient Monitoring Program (SWAMP) Bioaccumulation Screening Study in California Lakes and Reservoirs, Sampling Dates: June 2007- March 2008" (SWAMP, 2008).
Temporal Representation:
Data was collected on a single day 11/1/2007.
Environmental Conditions:
Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:
Samples were collected, processed, and analyzed in accordance with the methods described in Quality Assurance Project Plan "Screening Study of Bioaccumulation in California Lakes and Reservoirs." (SWAMP, 2002).
Line of Evidence (LOE) for Decision ID 164478, Heptachlor epoxide
Region 7
Wiest Lake
LOE ID:
126156
Pollutant:
Heptachlor epoxide
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:
0
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Waterboard staff assessed RWB7 TMDL data for Wiest Lake to determine beneficial use support and the results are as follows: Zero of Zero samples exceeded the water quality standard for Heptachlor Epoxide. Although data was collected for 4 fish species (1 composite(s) of Black Crappie each composed of 5 fish per composite, 1 composite(s) of Common Carp each composed of 5 fish per composite, 1 composite(s) of Largemouth Bass each composed of 1 fish per composite, 1 composite(s) of Largemouth Bass each composed of 5 fish per composite), all 4 sample(s) had to be thrown out due to quantitation issues.
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
The modified OEHHA Fish Contaminant Goal for heptachlor epoxide in fish tissue is 0.93 ppb. This screening level assumes an average body weight of 70 kg and a consumption rate of 32 g/day for a 30 year exposure over a 70-year lifetime. This constituent is a carcinogen therefore the risk level is set to one in a million. A cooking reduction factor of 1 is applied for skin-off fillets. (Klasing, S., and R. Brodberg, 2008; OEHHA, 1999)
Guideline Reference:
DECISION ID
164480
Region 7
Wiest Lake
Pollutant:
Lindane/gamma Hexachlorocyclohexane (gamma-HCH)
Final Listing Decision:
Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:
Do Not List on 303(d) list (TMDL required list)(2018)
Revision Status
Revised
Impairment from Pollutant or Pollution:
Pollutant
Regional Board Conclusion:
Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available
Regional Board Decision Recommendation:
After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
State Board Review of Regional Board Conclusion and Recommendation:
State Board Decision Recommendation:
After review of 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 it cannot be determined if applicable water quality standards are not being exceeded.
Listing Extent:
Line of Evidence (LOE) for Decision ID 164480, Lindane/gamma Hexachlorocyclohexane (gamma-HCH)
Region 7
Wiest Lake
LOE ID:
126309
Pollutant:
Lindane/gamma Hexachlorocyclohexane (gamma-HCH)
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Cold Freshwater Habitat
Number of Samples:
4
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed RWB7 TMDL data for Wiest Lake to determine beneficial use support and the results are as follows 0 of the 4 samples exceeded the water quality standard for HCH, gamma-. Data were collected for 4 fish species (1 composite(s) of Largemouth Bass each composed of 1 fish per composite, 1 composite(s) of Black Crappie each composed of 5 fish per composite, 1 composite(s) of Common Carp each composed of 5 fish per composite, 1 composite(s) of Largemouth Bass each composed of 5 fish per composite).
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
National Academy of Science guidelines (NAS 1972) establish a maximum Lindane concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Line of Evidence (LOE) for Decision ID 164480, Lindane/gamma Hexachlorocyclohexane (gamma-HCH)
Region 7
Wiest Lake
LOE ID:
46309
Pollutant:
Lindane/gamma Hexachlorocyclohexane (gamma-HCH)
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Cold Freshwater Habitat
Number of Samples:
1
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for HCH, gamma. One composite (3 fish per composite) was generated from one species: channel catfish. Details of the compositing protocol can be found in the March 2009 report entitled: "Contaminants in Fish from California Lakes and Reservoirs: Technical Report on Year One of a Two-Year Screening Study" (SWAMP, 2009).
No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (Water Quality Control Plan, Colorado River Basin).
National Academy of Science guidelines (NAS 1972) establish a maximum Lindane concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Data for this line of evidence for Wiest Lake was collected at 1 monitoring site [ Wiest Ls.ca.gov/water_issues/programs/tmdl/records/state_board/2008/ref2456.pdf" >Development of Fish Contaminant Goals and Advisory Tissue Levels for Common Contaminants in California Sport Fish: Chlordane, DDTs, Dieldrin, Methylmercury, PCBs, Selenium, and Toxaphene
Line of Evidence (LOE) for Decision ID 164478, Heptachlor epoxide
Region 7
Wiest Lake
LOE ID:
46210
Pollutant:
Heptachlor epoxide
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:
0
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 0 samples exceed the criterion for Heptachlor epoxide. Six composites were generated from two species: black crappie and channel catfish. Composites comprised of 3 - 4 fish for black crappie and 2 -3 fish for channel catfish. Six samples were not used in the assessment because the laboratory data reporting limit(s) was above the objective and therefore the results could not be quantified with the level of certainty required by the Listing Policy.
No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (Water Quality Control Plan, Colorado River Basin).
The modified OEHHA Fish Contaminant Goal for heptachlor epoxide in fish tissue is 0.93 ppb. This screening level assumes an average body weight of 70 kg and a consumption rate of 32 g/day for a 30 year exposure over a 70-year lifetime. This constituent is a carcinogen therefore the risk level is set to one in a million. A cooking reduction factor of 1 is applied for skin-off fillets.
Line of Evidence (LOE) for Decision ID 164478, Heptachlor epoxide
Region 7
Wiest Lake
LOE ID:
46314
Pollutant:
Heptachlor epoxide
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Cold Freshwater Habitat
Number of Samples:
1
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Heptachlor epoxide. One composite (3 fish per composite) was generated from one species: channel catfish. Details of the compositing protocol can be found in the March 2009 report entitled: "Contaminants in Fish from California Lakes and Reservoirs: Technical Report on Year One of a Two-Year Screening Study" (SWAMP, 2009).
No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (Water Quality Control Plan, Colorado River Basin).
National Academy of Science guidelines (NAS 1972) establish a maximum Heptachlor Epoxide concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Data for this line of evidence for Wiest Lake was collected at 1 monitoring site [ Wiest Lake_BOG - 723PWT019]. Samples were collected from 1 location. Individual sample locations consisted of an area within a given waterbody from which fish tissue samples were collected. The number of sample locations per waterbody was based on the overall size of the waterbody (SWAMP, 2010). Specifics of individual sampling locations can be found in the supplemental report entitled "Cruise Report for the Surface Waters Ambient Monitoring Program (SWAMP) Bioaccumulation Screening Study in California Lakes and Reservoirs, Sampling Dates: June 2007- March 2008" (SWAMP, 2008).
Temporal Representation:
Data was collected on a single day 11/1/2007.
Environmental Conditions:
Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:
Samples were collected, processed, and analyzed in accordance with the methods described in Quality Assurance Project Plan "Screening Study of Bioaccumulation in California Lakes and Reservoirs." (SWAMP, 2002).
Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:
Samples were collected, processed, and analyzed in accordance with the methods described in Quality Assurance Project Plan "Screening Study of Bioaccumulation in California Lakes and Reservoirs." (SWAMP, 2002).
Line of Evidence (LOE) for Decision ID 164480, Lindane/gamma Hexachlorocyclohexane (gamma-HCH)
Region 7
Wiest Lake
LOE ID:
126507
Pollutant:
Lindane/gamma Hexachlorocyclohexane (gamma-HCH)
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Cold Freshwater Habitat
Number of Samples:
3
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP RWB7 Monitoring data for Wiest Lake to determine beneficial use support and the results are as follows 0 of the 3 samples exceeded the water quality standard for HCH, gamma-. Data were collected for 3 fish species (1 composite(s) of Channel Catfish each composed of 3 fish per composite, 1 composite(s) of Channel Catfish each composed of 9 fish per composite, 1 composite(s) of Striped Bass each composed of 3 fish per composite).
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
National Academy of Science guidelines (NAS 1972) establish a maximum Lindane concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Line of Evidence (LOE) for Decision ID 164480, Lindane/gamma Hexachlorocyclohexane (gamma-HCH)
Region 7
Wiest Lake
LOE ID:
46194
Pollutant:
Lindane/gamma Hexachlorocyclohexane (gamma-HCH)
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Cold Freshwater Habitat
Number of Samples:
2
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for HCH, gamma. Six composites were generated from two species: black crappie and channel catfish. Composites comprised of 3 - 4 fish for black crappie and 2 -3 fish for channel catfish. Composites collected at the same time on the same day for the same species were averaged in accordance with the listing policy.
No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (Water Quality Control Plan, Colorado River Basin).
National Academy of Science guidelines (NAS 1972) establish a maximum Lindane concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Line of Evidence (LOE) for Decision ID 164480, Lindane/gamma Hexachlorocyclohexane (gamma-HCH)
Region 7
Wiest Lake
LOE ID:
46308
Pollutant:
Lindane/gamma Hexachlorocyclohexane (gamma-HCH)
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:
1
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Line of Evidence (LOE) for Decision ID 164478, Heptachlor epoxide
Region 7
Wiest Lake
LOE ID:
126293
Pollutant:
Heptachlor epoxide
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Cold Freshwater Habitat
Number of Samples:
4
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed RWB7 TMDL data for Wiest Lake to determine beneficial use support and the results are as follows 0 of the 4 samples exceeded the water quality standard for Heptachlor Epoxide. Data were collected for 4 fish species (1 composite(s) of Largemouth Bass each composed of 1 fish per composite, 1 composite(s) of Black Crappie each composed of 5 fish per composite, 1 composite(s) of Common Carp each composed of 5 fish per composite, 1 composite(s) of Largemouth Bass each composed of 5 fish per composite).
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
National Academy of Science guidelines (NAS 1972) establish a maximum Heptachlor Epoxide concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Line of Evidence (LOE) for Decision ID 164478, Heptachlor epoxide
Region 7
Wiest Lake
LOE ID:
126438
Pollutant:
Heptachlor epoxide
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Cold Freshwater Habitat
Number of Samples:
3
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP RWB7 Monitoring data for Wiest Lake to determine beneficial use support and the results are as follows 0 of the 3 samples exceeded the water quality standard for Heptachlor Epoxide. Data were collected for 3 fish species (1 composite(s) of Channel Catfish each composed of 3 fish per composite, 1 composite(s) of Channel Catfish each composed of 9 fish per composite, 1 composite(s) of Striped Bass each composed of 3 fish per composite).
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
National Academy of Science guidelines (NAS 1972) establish a maximum Heptachlor Epoxide concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Line of Evidence (LOE) for Decision ID 164478, Heptachlor epoxide
Region 7
Wiest Lake
LOE ID:
46211
Pollutant:
Heptachlor epoxide
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Cold Freshwater Habitat
Number of Samples:
2
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for Heptachlor epoxide. Six composites were generated from two species: black crappie and channel catfish. Composites comprised of 3 - 4 fish for black crappie and 2 -3 fish for channel catfish. Composites collected at the same time on the same day for the same species were averaged in accordance with the listing policy.
No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (Water Quality Control Plan, Colorado River Basin).
Evaluation Guideline:Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for HCH, gamma. One composite (3 fish per composite) was generated from one species: channel catfish. Details of the compositing protocol can be found in the March 2009 report entitled: "Contaminants in Fish from California Lakes and Reservoirs: Technical Report on Year One of a Two-Year Screening Study" (SWAMP, 2009).
No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (Water Quality Control Plan, Colorado River Basin).
The modified OEHHA Fish Contaminant Goal for lindane in fish tissue is 4.6 ppb. This screening level assumes an average body weight of 70 kg and a consumption rate of 32 g/day for a 30 year exposure over a 70-year lifetime. This constituent is a carcinogen therefore the risk level is set to one in a million. A cooking reduction factor of 1 is applied for skin-off fillets.
Data for this line of evidence for Wiest Lake was collected at 1 monitoring site [ Wiest Lake_BOG - 723PWT019]. Samples were collected from 1 location. Individual sample locations consisted of an area within a given waterbody from which fish tissue samples were collected. The number of sample locations per waterbody was based on the overall size of the waterbody (SWAMP, 2010). Specifics of individual sampling locations can be found in the supplemental report entitled "Cruise Report for the Surface Waters Ambient Monitoring Program (SWAMP) Bioaccumulation Screening Study in California Lakes and Reservoirs, Sampling Dates: June 2007- March 2008" (SWAMP, 2008).
Temporal Representation:
Data was collected on a single day 11/1/2007.
Environmental Conditions:
Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:
Samples were collected, processed, and analyzed in accordance with the methods described in Quality Assurance Project Plan "Screening Study of Bioaccumulation in California Lakes and Reservoirs." (SWAMP, 2002).
Line of Evidence (LOE) for Decision ID 164480, Lindane/gamma Hexachlorocyclohexane (gamma-HCH)
Region 7
Wiest Lake
LOE ID:
126389
Pollutant:
Lindane/gamma Hexachlorocyclohexane (gamma-HCH)
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:
3
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP RWB7 Monitoring data for Wiest Lake to determine beneficial use support and the results are as follows 0 of the 3 samples exceeded the water quality standard for HCH, gamma-. Data were collected for 3 fish species (1 composite(s) of Channel Catfish each composed of 3 fish per composite, 1 composite(s) of Channel Catfish each composed of 9 fish per composite, 1 composite(s) of Striped Bass each composed of 3 fish per composite).
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
The modified OEHHA Fish Contaminant Goal for lindane in fish tissue is 4.6 ppb. This screening level assumes an average body weight of 70 kg and a consumption rate of 32 g/day for a 30 year exposure over a 70-year lifetime. This constituent is a carcinogen therefore the risk level is set to one in a million. A cooking reduction factor of 1 is applied for skin-off fillets. (Klasing, S., and R. Brodberg, 2008; OEHHA, 2005)
Line of Evidence (LOE) for Decision ID 164480, Lindane/gamma Hexachlorocyclohexane (gamma-HCH)
Region 7
Wiest Lake
LOE ID:
6741
Pollutant:
Lindane/gamma Hexachlorocyclohexane (gamma-HCH)
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Total
Beneficial Use:
Warm Freshwater Habitat
Number of Samples:
2
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Two fish fillet samples were taken at 1 location in the lake. The samples were generally collected in 10/1989 and 12/1999. Of these two samples, neither exceeded the NAS tissue guideline (TSMP, 2007).
National Academy of Science guidelines (NAS 1972) establish a maximum Heptachlor Epoxide concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Line of Evidence (LOE) for Decision ID 164478, Heptachlor epoxide
Region 7
Wiest Lake
LOE ID:
5633
Pollutant:
Heptachlor epoxide
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Total
Beneficial Use:
Warm Freshwater Habitat
Number of Samples:
2
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Two fish fillet samples were taken at 1 location in the lake. The samples were generally collected in 10/1989 and 12/1999. Of these two samples, neither exceeded the NAS tissue guideline (TSMP, 2007).
Basin Plan: No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (CRBRWQCB, 2006).
Samples were collected from the interior of Wiest Lake.
Temporal Representation:
Two largemouth bass fillet composite samples were collected in 10/1989 and 12/1999.
Environmental Conditions:
QAPP Information:
The field procedures are described in TSMP Data Reports and associated Appendices. CDFG's Laboratory applies Quality Assurance Program Plan procedures for laboratory Quality Assurance and Quality Control, as described in Rasmussen (1993).
Line of Evidence (LOE) for Decision ID 16%">Water Quality Objective/Criterion:
Basin Plan: No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (CRBRWQCB, 2006).
Samples were collected from the interior of Wiest Lake.
Temporal Representation:
Two largemouth bass fillet composite samples were collected in 10/1989 and 12/1999.
Environmental Conditions:
QAPP Information:
The field procedures are described in TSMP Data Reports and associated Appendices. CDFG's Laboratory applies Quality Assurance Program Plan procedures for laboratory Quality Assurance and Quality Control, as described in Rasmussen (1993).
Line of Evidence (LOE) for Decision ID 164480, Lindane/gamma Hexachlorocyclohexane (gamma-HCH)
Region 7
Wiest Lake
LOE ID:
46193
Pollutant:
Lindane/gamma Hexachlorocyclohexane (gamma-HCH)
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:
2
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for HCH, gamma. Six composites were generated from two species: black crappie and channel catfish. Composites comprised of 3 - 4 fish for black crappie and 2 -3 fish for channel catfish. Composites collected at the same time on the same day for the same species were averaged in accordance with the listing policy.
No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (Water Quality Control Plan, Colorado River Basin).
The modified OEHHA Fish Contaminant Goal for lindane in fish tissue is 4.6 ppb. This screening level assumes an average body weight of 70 kg and a consumption rate of 32 g/day for a 30 year exposure over a 70-year lifetime. This constituent is a carcinogen therefore the risk level is set to one in a million. A cooking reduction factor of 1 is applied for skin-off fillets.
Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:
1
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Two fish fillet samples were taken at 1 location in lake. One fish fillet sample result could not be used in this assessment because the sample results were non-detect and the detection limit was above the criteria concentrations. The 1 fish fillet sample that was acceptable was generally collected in 12/1999. This sample did not exceeded the OEHHA Screening Value. (TSMP, 2007).
Basin Plan: No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (CRBRWQCB, 2006).
Samples were collected from the interior of Wiest Lake.
Temporal Representation:
Two largemouth bass fillet composite samples were collected in 10/1989 and 12/1999.
Environmental Conditions:
QAPP Information:
The field procedures are described in TSMP Data Reports and associated Appendices. CDFG's Laboratory applies Quality Assurance Program Plan procedures for laboratory Quality Assurance and Quality Control, as described in Rasmussen (1993).
QAPP Information Reference(s):
Line of Evidence (LOE) for Decision ID 164478, Heptachlor epoxide
Region 7
Wiest Lake
LOE ID:
46315
Pollutant:
Heptachlor epoxide
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Warm Freshwater Habitat
Number of Samples:
1
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Heptachlor epoxide. One composite (3 fish per composite) was generated from one species: channel catfish. Details of the compositing protocol can be found in the March 2009 report entitled: "Contaminants in Fish from California Lakes and Reservoirs: Technical Report on Year One of a Two-Year Screening Study" (SWAMP, 2009).
No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (Water Quality Control Plan, Colorado River Basin).
National Academy of Science guidelines (NAS 1972) establish a maximum Heptachlor Epoxide concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Data for this line of evidence for Wiest Lake was collected at 1 monitoring site [ Wiest Lake_BOG - 723PWT019]. Samples were collected from 1 location. Individual sample locations consisted of an area within a given waterbody from which fish tissue samples were collected. The number of sample locations per waterbody was based on the overall size of the waterbody (SWAMP, 2010). Specifics of individual sampling locations can be found in the supplemental report entitled "Cruise Report for the Surface Waters Ambient Monitoring Program (SWAMP) Bioaccumulation Screening Study in California Lakes and Reservoirs, Sampling Dates: June 2007- March 2008" (SWAMP, 2008).
Temporal Representation:
Data was collected on a single day 11/1/2007.
Environmental Conditions:
Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:
Samples were collected, processed, and analyzed in accordance with the methods described in Quality Assurance Project Plan "Screening Study of Bioaccumulation in California Lakes and Reservoirs." (SWAMP, 2002).
Line of Evidence (LOE) for Decision ID 164478, Heptachlor epoxide
Region 7
Wiest Lake
LOE ID:
126194
Pollutant:
Heptachlor epoxide
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Warm Freshwater Habitat
Number of Samples:
3
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP RWB7 Monitoring data for Wiest Lake to determine beneficial use support and the results are as follows 0 of the 3 samples exceeded the water quality standard for Heptachlor Epoxide. Data were collected for 3 fish species (1 composite(s) of Channel Catfish each composed of 3 fish per composite, 1 composite(s) of Channel Catfish each composed of 9 fish per compositeial Representation:
Data for this line of evidence for Wiest Lake was collected at 1 monitoring site [ Wiest Lake - 723WIESLK]
Temporal Representation:
Data was collected on a single day 11/6/2004.
Environmental Conditions:
Staff is not aware of any special conditions that might affect interpretation of the data.
Line of Evidence (LOE) for Decision ID 164480, Lindane/gamma Hexachlorocyclohexane (gamma-HCH)
Region 7
Wiest Lake
LOE ID:
126388
Pollutant:
Lindane/gamma Hexachlorocyclohexane (gamma-HCH)
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Warm Freshwater Habitat
Number of Samples:
3
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP RWB7 Monitoring data for Wiest Lake to determine beneficial use support and the results are as follows 0 of the 3 samples exceeded the water quality standard for HCH, gamma-. Data were collected for 3 fish species (1 composite(s) of Channel Catfish each composed of 3 fish per composite, 1 composite(s) of Channel Catfish each composed of 9 fish per composite, 1 composite(s) of Striped Bass each composed of 3 fish per composite).
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
National Academy of Science guidelines (NAS 1972) establish a maximum Lindane concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
National Academy of Science guidelines (NAS 1972) establish a maximum Heptachlor Epoxide concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Line of Evidence (LOE) for Decision ID 164478, Heptachlor epoxide
Region 7
Wiest Lake
LOE ID:
46212
Pollutant:
Heptachlor epoxide
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Warm Freshwater Habitat
Number of Samples:
2
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for Heptachlor epoxide. Six composites were generated from two species: black crappie and channel catfish. Composites comprised of 3 - 4 fish for black crappie and 2 -3 fish for channel catfish. Composites collected at the same time on the same day for the same species were averaged in accordance with the listing policy.
No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (Water Quality Control Plan, Colorado River Basin).
National Academy of Science guidelines (NAS 1972) establish a maximum Heptachlor Epoxide concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for HCH, gamma. One composite (3 fish per composite) was generated from one species: channel catfish. Details of the compositing protocol can be found in the March 2009 report entitled: "Contaminants in Fish from California Lakes and Reservoirs: Technical Report on Year One of a Two-Year Screening Study" (SWAMP, 2009).
No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (Water Quality Control Plan, Colorado River Basin).
National Academy of Science guidelines (NAS 1972) establish a maximum Lindane concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Data for this line of evidence for Wiest Lake was collected at 1 monitoring site [ Wiest Lake_BOG - 723PWT019]. Samples were collected from 1 location. Individual sample locations consisted of an area within a given waterbody from which fish tissue samples were collected. The number of sample locations per waterbody was based on the overall size of the waterbody (SWAMP, 2010). Specifics of individual sampling locations can be found in the supplemental report entitled "Cruise Report for the Surface Waters Ambient Monitoring Program (SWAMP) Bioaccumulation Screening Study in California Lakes and Reservoirs, Sampling Dates: June 2007- March 2008" (SWAMP, 2008).
Temporal Representation:
Data was collected on a single day 11/1/2007.
Environmental Conditions:
Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:
Samples were collected, processed, and analyzed in accordance with the methods described in Quality Assurance Project Plan "Screening Study of Bioaccumulation in California Lakes and Reservoirs." (SWAMP, 2002).
Line of Evidence (LOE) for Decision ID 164478, Heptachlor epoxide
Region 7
Wiest Lake
LOE ID:
126555
Pollutant:
Heptachlor epoxide
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Warm Freshwater Habitat
Number of Samples:
4
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed RWB7 TMDL data for Wiest Lake to determine beneficial use support and the results are as follows 0 of the 4 samples exceeded the water quality standard for Heptachlor Epoxide. Data were collected for 4 fish species (1 composite(s) of Largemouth Bass each composed of 1 fish per composite, 1 composite(s) of Black Crappie each composed of 5 fish per composite, 1 composite(s) of Common Carp each composed of 5 fish per composite, 1 composite(s) of Largemouth Bass each composed of 5 fish per composite).
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
National Academy of Science guidelines (NAS 1972) establish a maximum Heptachlor Epoxide concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for HCH, gamma. Six composites were generated from two species: black crappie and channel catfish. Composites comprised of 3 - 4 fish for black crappie and 2 -3 fish for channel catfish. Composites collected at the same time on the same day for the same species were averaged in accordance with the listing policy.
No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (Water Quality Control Plan, Colorado River Basin).
National Academy of Science guidelines (NAS 1972) establish a maximum Lindane concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Line of Evidence (LOE) for Decision ID 164480, Lindane/gamma Hexachlorocyclohexane (gamma-HCH)
Region 7
Wiest Lake
LOE ID:
126373
Pollutant:
Lindane/gamma Hexachlorocyclohexane (gamma-HCH)
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Warm Freshwater Habitat
Number of Samples:
4
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed RWB7 TMDL data for Wiest Lake to determine beneficial use support and the results are as follows 0 of the 4 samples exceeded the water quality standard for HCH, gamma-. Data were collected for 4 fish species (1 composite(s) of Largemouth Bass each composed of 1 fish per composite, 1 composite(s) of Black Crappie each composed of 5 fish per composite, 1 composite(s) of Common Carp each composed of 5 fish per composite, 1 composite(s) of Largemouth Bass each composed of 5 fish per composite).
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
National Academy of Science guidelines (NAS 1972) establish a maximum Lindane concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Line of Evidence (LOE) for Decision ID 164480, Lindane/gamma Hexachlorocyclohexane (gamma-HCH)
Region 7
Wiest Lake
LOE ID:
5558
Pollutant:
Lindane/gamma Hexachlorocyclohexane (gamma-HCH)
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Total
Beneficial Use:
Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:
2
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Two fish fillet samples were taken at 1 location in the lake. The samples were generally collected in 10/1989 and 12/1999. Of these two samples, neither exceeded the OEHHA Screening Value (TSMP, 2007).
Basin Plan: No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (CRBRWQCB, 2006).
Samples were collected from the interior of Wiest Lake.
Temporal Representation:
Two largemouth bass fillet composite samples were collected in 10/1989 and 12/1999.<
DECISION ID
164479
Region 7
Wiest Lake
Pollutant:
Hexachlorobenzene/ HCB
Final Listing Decision:
Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:
Do Not List on 303(d) list (TMDL required list)(2018)
Revision Status
Revised
Impairment from Pollutant or Pollution:
Pollutant
Regional Board Conclusion:
Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available
Regional Board Decision Recommendation:
After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
State Board Review of Regional Board Conclusion and Recommendation:
State Board Decision Recommendation:
After review of 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 it cannot be determined if applicable water quality standards are not being exceeded.
Listing Extent:
Line of Evidence (LOE) for Decision ID 164479, Hexachlorobenzene/ HCB
Region 7
Wiest Lake
LOE ID:
126157
Pollutant:
Hexachlorobenzene/ HCB
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
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:
Water Board staff assessed RWB7 TMDL data for Wiest Lake to determine beneficial use support and the results are as follows 0 of the 4 samples exceeded the water quality standard for Hexachlorobenzene. Data were collected for 4 fish species (1 composite(s) of Largemouth Bass each composed of 1 fish per composite, 1 composite(s) of Black Crappie each composed of 5 fish per composite, 1 composite(s) of Common Carp each composed of 5 fish per composite, 1 composite(s) of Largemouth Bass each composed of 5 fish per composite).
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
The modified OEHHA Fish Contaminant Goal for hexachlorobenzene in fish tissue is 2.8 ppb. This screening level assumes an average body weight of 70 kg and a consumption rate of 32 g/day for a 30 year exposure over a 70-year lifetime. This constituent is a carcinogen therefore the risk level is set to one in a million. A cooking reduction factor of 1 is applied for skin-off fillets. (Klasing, S., and R. Brodberg, 2008; OEHHA, 2005)
Line of Evidence (LOE) for Decision ID 164479, Hexachlorobenzene/ HCB
Region 7
Wiest Lake
LOE ID:
46316
Pollutant:
Hexachlorobenzene/ HCB
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:
1
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Hexachlorobenzene. One composite (3 fish per composite) was generated from one species: channel catfish. Details of the compositing protocol can be found in the March 2009 report entitled: "Contaminants in Fish from California Lakes and Reservoirs: Technical Report on Year One of a Two-Year Screening Study" (SWAMP, 2009).
No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (Water Quality Control Plan, Colorado River Basin).
The modified OEHHA Fish Contaminant Goal for hexachlorobenzene in fish tissue is 2.8 ppb. This screening level assumes an average body weight of 70 kg and a consumption ra/td>
Environmental Conditions:
QAPP Information:
The field procedures are described in TSMP Data Reports and associated Appendices. CDFG's Laboratory applies Quality Assurance Program Plan procedures for laboratory Quality Assurance and Quality Control, as described in Rasmussen (1993).
Line of Evidence (LOE) for Decision ID 164480, Lindane/gamma Hexachlorocyclohexane (gamma-HCH)
Region 7
Wiest Lake
LOE ID:
126357
Pollutant:
Lindane/gamma Hexachlorocyclohexane (gamma-HCH)
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
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:
Water Board staff assessed RWB7 TMDL data for Wiest Lake to determine beneficial use support and the results are as follows 0 of the 4 samples exceeded the water quality standard for HCH, gamma-. Data were collected for 4 fish species (1 composite(s) of Largemouth Bass each composed of 1 fish per composite, 1 composite(s) of Black Crappie each composed of 5 fish per composite, 1 composite(s) of Common Carp each composed of 5 fish per composite, 1 composite(s) of Largemouth Bass each composed of 5 fish per composite).
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
The modified OEHHA Fish Contaminant Goal for lindane in fish tissue is 4.6 ppb. This screening level assumes an average body weight of 70 kg and a consumption rate of 32 g/day for a 30 year exposure over a 70-year lifetime. This constituent is a carcinogen therefore the risk level is set to one in a million. A cooking reduction factor of 1 is applied for skin-off fillets. (Klasing, S., and R. Brodberg, 2008; OEHHA, 2005)
te of 32 g/day for a 30 year exposure over a 70-year lifetime. This constituent is a carcinogen therefore the risk level is set to one in a million. A cooking reduction factor of 1 is applied for skin-off fillets.
Data for this line of evidence for Wiest Lake was collected at 1 monitoring site [ Wiest Lake_BOG - 723PWT019]. Samples were collected from 1 location. Individual sample locations consisted of an area within a given waterbody from which fish tissue samples were collected. The number of sample locations per waterbody was based on the overall size of the waterbody (SWAMP, 2010). Specifics of individual sampling locations can be found in the supplemental report entitled "Cruise Report for the Surface Waters Ambient Monitoring Program (SWAMP) Bioaccumulation Screening Study in California Lakes and Reservoirs, Sampling Dates: June 2007- March 2008" (SWAMP, 2008).
Temporal Representation:
Data was collected on a single day 11/1/2007.
Environmental Conditions:
Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:
Samples were collected, processed, and analyzed in accordance with the methods described in Quality Assurance Project Plan "Screening Study of Bioaccumulation in California Lakes and Reservoirs." (SWAMP, 2002).
Line of Evidence (LOE) for Decision ID 164479, Hexachlorobenzene/ HCB
Region 7
Wiest Lake
LOE ID:
46224
Pollutant:
Hexachlorobenzene/ HCB
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:
2
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for Hexachlorobenzene. Six composites were generated from two species: black crappie and channel catfish. Composites comprised of 3 - 4 fish for black crappie and 2 -3 fish for channel catfish. Composites collected at the same time on the same day for the same species were averaged in accordance with the listing policy.
No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (Water Quality Control Plan, Colorado River Basin).
The modified OEHHA Fish Contaminant Goal for hexachlorobenzene in fish tissue is 2.8 ppb. This screening level assumes an average body weight of 70 kg and a consumption rate of 32 g/day for a 30 year exposure over a 70-year lifetime. This constituent is a carcinogen therefore the risk level is set to one in a million. A cooking reduction factor of 1 is applied for skin-off fillets.
Line of Evidence (LOE) for Decision ID 164479, Hexachlorobenzene/ HCB
Region 7
Wiest Lake
LOE ID:
126658
Pollutant:
Hexachlorobenzene/ HCB
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:
3
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP RWB7 Monitoring data for Wiest Lake to determine beneficial use support and the results are as follows 0 of the 3 samples exceeded the water quality standard for Hexachlorobenzene. Data were collected for 3 fish species (1 composite(s) of Channel Catfish each composed of 3 fish per composite, 1 composite(s) of Channel Catfish each composed of 9 fish per composite, 1 composite(s) of Striped Bass each composed of 3 fish per composite).
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
The modified OEHHA Fish Contaminant Goal for hexachlorobenzene in fish tissue is 2.8 ppb. This screening level assumes an average body weight of 70 kg and a consumption rate of 32 g/day for a 30 year exposure over a 70-year lifetime. This constituent is a carcinogen therefore the risk level is set to one in a million. A cooking reduction factor of 1 is applied for skin-off fillets. (Klasing, S., and R. Brodberg, 2008; OEHHA, 2005)
Do Not List on 303(d) list (TMDL required list)(2018)
Revision Status
Revised
Impairment from Pollutant or Pollution:
Pollutant
Regional Board Conclusion:
This pollutant is being considered for placement on the section 303(d) list under section 3.5 of the Listing Policy. Under section 3.5 a single line of evidence is necessary to assess listing status. Eighteen lines of evidence are available in the administrative record to assess the pollutant.
COMM (Sport fish objective) Fish used in the COMM assessment are limited to lengths that are within Calif. Dept. of Fish and Wildlife legal size limits applicable to this waterbody. LOE 132928: 0 of 1 samples exceed the mercury objective and consist of 31 trophic level 4 fish. LOE 133292: 0 of 1 samples exceed the mercury objective and consist of 3 trophic level 3 fish. (CDFW legal limit) LOE 133128: 0 of 1 samples exceed the mercury objective and consist of 3 trophic level 3 fish. LOE 133264: 0 of 1 samples exceed the mercury objective and consist of 16 trophic level 4 fish. LOE 133144: 0 of 1 samples exceed the mercury objective and consist of 5 trophic level 4 fish. LOE 133100: 0 of 1 samples exceed the mercury objective and consist of 16 trophic level 4 fish. (CDFW legal limit) LOE 133234: 0 of 1 samples exceed the mercury objective and consist of 26 trophic level 4 fish. (CDFW legal limit) LOE 133134: 0 of 1 samples exceed the mercury objective and consist of 5 trophic level 4 fish. (CDFW legal limit) LOE 334343: 0 of 1 samples exceed the mercury objective and consist of 10 trophic level 4 fish. (CDFW legal limit)
WILD (Sport fish objective) LOE 133337: 0 of 1 samples exceed the mercury objective and consist of 31 trophic level 4 fish. LOE 133212: 0 of 1 samples exceed the mercury objective and consist of 3 trophic level 3 fish. (CDFW legal limit) LOE 133068: 0 of 1 samples exceed the mercury objective and consist of 3 trophic level 3 fish. LOE 133001: 0 of 1 samples exceed the mercury objective and consist of 16 trophic level 4 fish. LOE 133146: 0 of 1 samples exceed the mercury objective and consist of 5 trophic level 4 fish. LOE 133295: 0 of 1 samples exceed the mercury objective and consist of 16 trophic level 4 fish. (CDFW legal limit) LOE 132965: 0 of 1 samples exceed the mercury objective and consist of 26 trophic level 4 fish. (CDFW legal limit) LOE 133271: 0 of 1 samples exceed the mercury objective and consist of 5 trophic level 4 fish. (CDFW legal limit) LOE 334380: 0 of 1 samples exceed the mercury objective and consist of 10 trophic level 4 fish. (CDFW legal limit)
While there is not a specific health advisory for Wiest Lake, in 2017 OEHHA released Health Advisory and Guidelines for Eating Fish from Wiest Lake (Imperial County). Fishing occurs at Wiest Lake and the fish species (Largemouth Bass) used for the assessments are part of 2017 Advisory.
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. Tissue samples were compared with the sport fish objective and 0 of 4 samples exceed for WILD beneficial use and 0 of 4 samples exceed for the COMM beneficial use. The samples consist of trophic level 4 fish and are from a minimum of 2 annual averages and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.
Regional Board Decision Recommendation:
After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because applicable water quality standards are not being exceeded.
State Board Review of Regional Board Conclusion and Recommendation:
State Board Decision Recommendation:
Decision written by SWRCB staff.
Listing Extent:
Line of Evidence (LOE) for Decision ID 170582, Mercury
Region 7
Wiest Lake
LOE ID:
133292
Pollutant:
Mercury
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:
1
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP RWB7 Monitoring data for Wiest Lake to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the water quality standard for Mercury. This LOE contains data only for trophic level 3 fish. The concentration of Mercury in fish collected within the same calendar year, for the same trophic level were averaged into a single sample for comparison with the objective. A total of 3 fish were aggregated into 1 annual averages, which consisted of 1 fish species (1 composite(s) of Redear Sunfish each composed of 3 fish per composite). This LOE does not contain data from fish whos average length was outside of the legal size limits as described by the California Department of Fish and Wildlife Fishing Regulations.
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
The Statewide Sport Fish Water Quality Objective for the protection of the Commercial and Sport Fishing beneficial comes from the Statewide Water Quality Control Plan for Inland Surface Waters, Enclosed Bays, and Estuaries of California, and is 0.2 mg/Kg wet weight skinless fillet samples of trophic level 3, or trophic level 4 fish (whichever is highest in the water body) over a one year averaging period. Trophic levels of applicable fish are defined in, but not limited to those in Attachment C of the Final Regulatory Language document (Appendix A) of State Water Resources Control Board Resolution No. 2017-0027.
Line of Evidence (LOE) for Decision ID 170582, Mercury
Region 7
Wiest Lake
LOE ID:
133128
Pollutant:
Mercury
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:
1
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staffe Project Plans, and Standard Operating Procedures for the SWAMP program
Line of Evidence (LOE) for Decision ID 164479, Hexachlorobenzene/ HCB
Region 7
Wiest Lake
LOE ID:
5557
Pollutant:
Hexachlorobenzene/ HCB
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Total
Beneficial Use:
Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:
2
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Two fish fillet samples were taken at 1 location in the lake. The samples were generally collected in 10/1989 and 12/1999. Of these two samples, neither exceeded the OEHHA Screening Value (TSMP, 2007).
Basin Plan: No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (CRBRWQCB, 2006).
Samples were collected from the interior of Wiest Lake.
Temporal Representation:
Two largemouth bass fillet composite samples were collected in 10/1989 and 12/1999.
Environmental Conditions:
QAPP Information:
The field procedures are described in TSMP Data Reports and associated Appendices. CDFG's Laboratory applies Quality Assurance Program Plan procedures for laboratory Quality Assurance and Quality Control, as described in Rasmussen (1993).
assessed SWAMP RWB7 Monitoring data for Wiest Lake to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the water quality standard for Mercury. This LOE contains data only for trophic level 3 fish. The concentration of Mercury in fish collected within the same calendar year, for the same trophic level were averaged into a single sample for comparison with the objective. A total of 3 fish were aggregated into 1 annual averages, which consisted of 1 fish species (1 composite(s) of Redear Sunfish each composed of 3 fish per composite).
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
The Statewide Sport Fish Water Quality Objective for the protection of the Commercial and Sport Fishing beneficial comes from the Statewide Water Quality Control Plan for Inland Surface Waters, Enclosed Bays, and Estuaries of California, and is 0.2 mg/Kg wet weight skinless fillet samples of trophic level 3, or trophic level 4 fish (whichever is highest in the water body) over a one year averaging period. Trophic levels of applicable fish are defined in, but not limited to those in Attachment C of the Final Regulatory Language document (Appendix A) of State Water Resources Control Board Resolution No. 2017-0027.
Line of Evidence (LOE) for Decision ID 170582, Mercury
Region 7
Wiest Lake
LOE ID:
132928
Pollutant:
Mercury
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:
1
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP RWB7 Monitoring data for Wiest Lake to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the water quality standard for Mercury. This LOE contains data only for trophic level 4 fish. The concentration of Mercury in fish collected within the same calendar year, for the same trophic level were averaged into a single sample for comparison with the objective. A total of 31 fish were aggregated into 1 annual averages, which consisted of 6 fish species (1 composite(s) of Channel Catfish each composed of 5 fish per composite, 1 composite(s) of Channel Catfish each composed of 4 fish per composite, 11 composite(s) of Largemouth Bass each composed of 1 fish per composite, 2 composite(s) of Striped Bass each composed of 1 fish per composite, 1 composite(s) of Black Crappie each composed of 5 fish per composite, 1 composite(s) of Black Crappie each composed of 4 fish per composite).
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
The Statewide Sport Fish Water Quality Objective for the protection of the Commercial and Sport Fishing beneficial comes from the Statewide Water Quality Control Plan for Inland Surface Waters, Enclosed Bays, and Estuaries of California, and is 0.2 mg/Kg wet weight skinless fillet samples of trophic level 3, or trophic level 4 fish (whichever is highest in the water body) over a one year averaging period. Trophic levels of applicable fish are defined in, but not limited to those in Attachment C of the Final Regulatory Language document (Appendix A) of State Water Resources Control Board Resolution No. 2017-0027.
Line of Evidence (LOE) for Decision ID 170582, Mercury
Region 7
Wiest Lake
LOE ID:
334343
Pollutant:
Mercury
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:
1
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP Sportfish Contamination in Lakes and Resrv data for Wiest Lake to determine beneficial use support and the results are as follows: 0 of 1 sample exceeded the water quality threshold for Mercury. Monitors collected 10 composites of Largemouth Bass composed of 1 fish each. This LOE contains data only for trophic level 4 fish whose average length was inside the legal size limits as described by the California Department of Fish and Wildlife Fishing Regulations. Fish collected within the same calendar year were averaged into a single sample for comparison with the objective. All 10 fish were collected in a single calendar year, which resulted in 1 independent sample.
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
The Statewide Sport Fish Water Quality Objective for the protection of the Commercial and Sport Fishing beneficial comes from the Statewide Water Quality Control Plan for Inland Surface Waters, Enclosed Bays, and Estuaries of California, and is 0.2 mg/Kg wet weight skinless fillet samples of trophic level 3, or trophic level 4 fish (whichever is highest in the water body) over a one year averaging period. Trophic levels of applicable fish are defined in, but not limited to those in Attachment C of the Final Regulatory Language document (Appendix A) of State Water Resources Control Board Resolution No. 2017-0027.
Data were collected from 1 station(s). Station Code(s): 723PWT019 (Wiest Lake_BOG).
Temporal Representation:
Data for this line of evidence were collected between 2019-06-03 and 2019-06-03. When composited fish were collected over multiple days, the first day of fish collection was used as the sample date in the LOE, both for LOE writing, and for averaging period purposes.
Line of Evidence (LOE) for Decision ID 170582, Mercury
Region 7
Wiest Lake
LOE ID:
334380
Pollutant:
Mercury
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Wildlife Habitat
Number of Samples:
1
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP Sportfish Contamination in Lakes and Resrv data for Wiest Lake to determine beneficial use support and the results are as follows: 0 of 1 sample exceeded the water quality threshold for Mercury. Monitors collected 10 composites of Largemouth Bass composed of 1 fish each. This LOE contains data only for trophic level 4 fish whose average length was inside the legal size limits as described by the California Department of Fish and Wildlife Fishing Regulations. Fish collected within the same calendar year were averaged into a single sample for comparison with the objective. All 10 fish were collected in a single calendar year, which resulted in 1 independent sample.
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
The Statewide Sport Fish Water Quality Objective for the protection of Wildlife Habitat comes from the Statewide Water Quality Control Plan for Inland Surface Waters, Enclosed Bays, and Estuaries of California, and is 0.2 mg/Kg wet weight skinless fillet samples of trophic level 3, or trophic level 4 fish (whichever is highest in the water body) over a one year averaging period. If trophic level 3 fish are used in the assessment then the Prey Fish Water Quality Objective must also be used to determine that the Sport Fish Objective is being met. Trophic levels of applicable fish are defined in, but not limited to those in Attachment C of the Final Regulatory Language document (Appendix A) of State Water Resources Control Board Resolution No. 2017-0027.
Data were collected from 1 station(s). Station Code(s): 723PWT019 (Wiest Lake_BOG).
Temporal Representation:
Data for this line of evidence were collected between 2019-06-03 and 2019-06-03. When composited fish were collected over multiple days, the first day of fish collection was used as the sample date in the LOE, both for LOE writing, and for averaging period purposes.
Environmental Conditions:
DECISION ID
164480
Region 7
Wiest Lake
Pollutant:
Lindane/gamma Hexachlorocyclohexane (gamma-HCH)
Final Listing Decision:
Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:
Do Not List on 303(d) list (TMDL required list)(2018)
Revision Status
Revised
Impairment from Pollutant or Pollution:
Pollutant
Regional Board Conclusion:
Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available
Regional Board Decision Recommendation:
After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
State Board Review of Regional Board Conclusion and Recommendation:
State Board Decision Recommendation:
After review of 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 it cannot be determined if applicable water quality standards are not being exceeded.
Listing Extent:
Line of Evidence (LOE) for Decision ID 164480, Lindane/gamma Hexachlorocyclohexane (gamma-HCH)
Region 7
Wiest Lake
LOE ID:
126309
Pollutant:
Lindane/gamma Hexachlorocyclohexane (gamma-HCH)
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Cold Freshwater Habitat
Number of Samples:
4
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed RWB7 TMDL data for Wiest Lake to determine beneficial use support and the results are as follows 0 of the 4 samples exceeded the water quality standard for HCH, gamma-. Data were collected for 4 fish species (1 composite(s) of Largemouth Bass each composed of 1 fish per composite, 1 composite(s) of Black Crappie each composed of 5 fish per composite, 1 composite(s) of Common Carp each composed of 5 fish per composite, 1 composite(s) of Largemouth Bass each composed of 5 fish per composite).
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
National Academy of Science guidelines (NAS 1972) establish a maximum Lindane concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Line of Evidence (LOE) for Decision ID 164480, Lindane/gamma Hexachlorocyclohexane (gamma-HCH)
Region 7
Wiest Lake
LOE ID:
46309
Pollutant:
Lindane/gamma Hexachlorocyclohexane (gamma-HCH)
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Cold Freshwater Habitat
Number of Samples:
1
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for HCH, gamma. One composite (3 fish per composite) was generated from one species: channel catfish. Details of the compositing protocol can be found in the March 2009 report entitled: "Contaminants in Fish from California Lakes and Reservoirs: Technical Report on Year One of a Two-Year Screening Study" (SWAMP, 2009).
No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (Water Quality Control Plan, Colorado River Basin).
National Academy of Science guidelines (NAS 1972) establish a maximum Lindane concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Line of Evidence (LOE) for Decision ID 170582, Mercury
Region 7
Wiest Lake
LOE ID:
133144
Pollutant:
Mercury
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:
1
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP Sportfish Contamination in Lakes and Resrv data for Wiest Lake to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the water quality standard for Mercury. This LOE contains data only for trophic level 4 fish. The concentration of Mercury in fish collected within the same calendar year, for the same trophic level were averaged into a single sample for comparison with the objective. A total of 5 fish were aggregated into 1 annual averages, which consisted of 1 fish species (1 composite(s) of Black Crappie each composed of 5 fish per composite).
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
The Statewide Sport Fish Water Quality Objective for the protection of the Commercial and Sport Fishing beneficial comes from the Statewide Water Quality Control Plan for Inland Surface Waters, Enclosed Bays, and Estuaries of California, and is 0.2 mg/Kg wet weight skinless fillet samples of trophic level 3, or trophic level 4 fish (whichever is highest in the water body) over a one year averaging period. Trophic levels of applicable fish are defined in, but not limited to those in Attachment C of the Final Regulatory Language document (Appendix A) of State Water Resources Control Board Resolution No. 2017-0027.
Line of Evidence (LOE) for Decision ID 170582, Mercury
Region 7
Wiest Lake
LOE ID:
Temporal Representation:
Data was collected on a single day 11/1/2007.
Environmental Conditions:
Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:
Samples were collected, processed, and analyzed in accordance with the methods described in Quality Assurance Project Plan "Screening Study of Bioaccumulation in California Lakes and Reservoirs." (SWAMP, 2002).
Line of Evidence (LOE) for Decision ID 164480, Lindane/gamma Hexachlorocyclohexane (gamma-HCH)
Region 7
Wiest Lake
LOE ID:
126507
Pollutant:
Lindane/gamma Hexachlorocyclohexane (gamma-HCH)
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Cold Freshwater Habitat
Number of Samples:
3
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP RWB7 Monitoring data for Wiest Lake to determine beneficial use support and the results are as follows 0 of the 3 samples exceeded the water quality standard for HCH, gamma-. Data were collected for 3 fish species (1 composite(s) of Channel Catfish each composed of 3 fish per composite, 1 composite(s) of Channel Catfish each composed of 9 fish per composite, 1 composite(s) of Striped Bass each composed of 3 fish per composite).
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
National Academy of Science guidelines (NAS 1972) establish a maximum Lindane concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:
1
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP RWB7 Monitoring data for Wiest Lake to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the water quality standard for Mercury. This LOE contains data only for trophic level 4 fish. The concentration of Mercury in fish collected within the same calendar year, for the same trophic level were averaged into a single sample for comparison with the objective. A total of 16 fish were aggregated into 1 annual averages, which consisted of 3 fish species (2 composite(s) of Channel Catfish each composed of 3 fish per composite, 2 composite(s) of Black Crappie each composed of 3 fish per composite, 1 composite(s) of Black Crappie each composed of 4 fish per composite).
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
The Statewide Sport Fish Water Quality Objective for the protection of the Commercial and Sport Fishing beneficial comes from the Statewide Water Quality Control Plan for Inland Surface Waters, Enclosed Bays, and Estuaries of California, and is 0.2 mg/Kg wet weight skinless fillet samples of trophic level 3, or trophic level 4 fish (whichever is highest in the water body) over a one year averaging period. Trophic levels of applicable fish are defined in, but not limited to those in Attachment C of the Final Regulatory Language document (Appendix A) of State Water Resources Control Board Resolution No. 2017-0027.
Line of Evidence (LOE) for Decision ID 170582, Mercury
Region 7
Wiest Lake
LOE ID:
133100
Pollutant:
Mercury
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:
1
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff asOE) for Decision ID 164480, Lindane/gamma Hexachlorocyclohexane (gamma-HCH)
Region 7
Wiest Lake
LOE ID:
46194
Pollutant:
Lindane/gamma Hexachlorocyclohexane (gamma-HCH)
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Cold Freshwater Habitat
Number of Samples:
2
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for HCH, gamma. Six composites were generated from two species: black crappie and channel catfish. Composites comprised of 3 - 4 fish for black crappie and 2 -3 fish for channel catfish. Composites collected at the same time on the same day for the same species were averaged in accordance with the listing policy.
No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (Water Quality Control Plan, Colorado River Basin).
National Academy of Science guidelines (NAS 1972) establish a maximum Lindane concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
The Statewide Sport Fish Water Quality Objective for the protection of the Commercial and Sport Fishing beneficial comes from the Statewide Water Quality Control Plan for Inland Surface Waters, Enclosed Bays, and Estuaries of California, and is 0.2 mg/Kg wet weight skinless fillet samples of trophic level 3, or trophic level 4 fish (whichever is highest in the water body) over a one year averaging period. Trophic levels of applicable fish are defined in, but not limited to those in Attachment C of the Final Regulatory Language document (Appendix A) of State Water Resources Control Board Resolution No. 2017-0027.
Line of Evidence (LOE) for Decision ID 170582, Mercury
Region 7
Wiest Lake
LOE ID:
133234
Pollutant:
Mercury
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:
1
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP RWB7 Monitoring data for Wiest Lake to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the water quality standard for Mercury. This LOE contains data only for trophic level 4 fish. The concentration of Mercury in fish collected within the same calendar year, for the same trophic level were averaged into a single sample for comparison with the objective. A total of 26 fish were aggregated into 1 annual averages, which consisted of 5 fish species (1 composite(s) of Channel Catfish each composed of 4 fish per composite, 1 composite(s) of Channel Catfish each composed of 5 fish per composite, 8 composite(s) of Largemouth Bass each composed of 1 fish per composite, 1 composite(s) of Black Crappie each composed of 4 fish per composite, 1 composite(s) of Black Crappie each composed of 5 fish per composite). This LOE does not contain data from fish whos average length was outside of the legal size limits as described by the California Department of Fish and Wildlife Fishing Regulations.
No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (Water Quality Control Plan, Colorado River Basin).
The modified OEHHA Fish Contaminant Goal for lindane in fish tissue is 4.6 ppb. This screening level assumes an average body weight of 70 kg and a consumption rate of 32 g/day for a 30 year exposure over a 70-year lifetime. This constituent is a carcinogen therefore the risk level is set to one in a million. A cooking reduction factor of 1 is applied for skin-off fillets.
Data for this line of evidence for Wiest Lake was collected at 1 monitoring site [ Wiest Lake_BOG - 723PWT019]. Samples were collected from 1 location. Individual sample locations consisted of an area within a given waterbody from which fish tissue samples were collected. The number of sample locations per waterbody was based on the overall size of the waterbody (SWAMP, 2010). Specifics of individual sampling locations can be found in the supplemental report entitled "Cruise Report for the Surface Waters Ambient Monitoring Program (SWAMP) Bioaccumulation Screening Study in California Lakes and Reservoirs, Sampling Dates: June 2007- March 2008" (SWAMP, 2008).
Temporal Representation:
Data was collected on a single day 11/1/2007.
Environmental Conditions:
Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:
Samples were collected, processed, and analyzed in accordance with the methods described in Quality Assurance Project Plan "Screening Study of Bioaccumulation in California Lakes and Reservoirs." (SWAMP, 2002).
Line of Evidence (LOE) for Decision ID 164480, Lindane/gamma Hexachlorocyclohexane (gamma-HCH)
Region 7
Wiest Lake
LOE ID:
126389
Pollutant:
Lindane/gamma Hexachlorocyclohexane (gamma-HCH)
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Commercial or recreational collection of fish, shellfish, or organisms
Water Quality Assessment Data for the 2018 solicitation cycle submitted through CEDEN for SWAMP RWB7 Monitoring.
SWAMP Data:
SWAMP
Water Quality Objective/Criterion:
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
The Statewide Sport Fish Water Quality Objective for the protection of the Commercial and Sport Fishing beneficial comes from the Statewide Water Quality Control Plan for Inland Surface Waters, Enclosed Bays, and Estuaries of California, and is 0.2 mg/Kg wet weight skinless fillet samples of trophic level 3, or trophic level 4 fish (whichever is highest in the water body) over a one year averaging period. Trophic levels of applicable fish are defined in, but not limited to those in Attachment C of the Final Regulatory Language document (Appendix A) of State Water Resources Control Board Resolution No. 2017-0027.
Line of Evidence (LOE) for Decision ID 170582, Mercury
Region 7
Wiest Lake
LOE ID:
133134
Pollutant:
Mercury
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:
1
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP Sportfish Contamination in Lakes and Resrv data for Wiest Lake to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the water quality standard for Mercury. This LOE contains data only for trophic level 4 fish. The concentration of Mercury in fish collected within the same calendar year, for the same trophic level were averaged into a single sample for comparison with the objective. A total of 5 fish were aggregated into 1 annual averages, which consisted of 1 fish species (1 composite(s) of Black Crappie each composed of 5 fish per composite). This LOE does not contain data from fish whos average length was outside of the legal size limits as described by the California Department of Fish and Wildlife Fishing Regulations.
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
The Statewide Sport Fish Water Quality Objective for the protection ofalign="left" valign="top" width="33%">Number of Samples:
3
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP RWB7 Monitoring data for Wiest Lake to determine beneficial use support and the results are as follows 0 of the 3 samples exceeded the water quality standard for HCH, gamma-. Data were collected for 3 fish species (1 composite(s) of Channel Catfish each composed of 3 fish per composite, 1 composite(s) of Channel Catfish each composed of 9 fish per composite, 1 composite(s) of Striped Bass each composed of 3 fish per composite).
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
The modified OEHHA Fish Contaminant Goal for lindane in fish tissue is 4.6 ppb. This screening level assumes an average body weight of 70 kg and a consumption rate of 32 g/day for a 30 year exposure over a 70-year lifetime. This constituent is a carcinogen therefore the risk level is set to one in a million. A cooking reduction factor of 1 is applied for skin-off fillets. (Klasing, S., and R. Brodberg, 2008; OEHHA, 2005)
Line of Evidence (LOE) for Decision ID 164480, Lindane/gamma Hexachlorocyclohexane (gamma-HCH)
Region 7
Wiest Lake
LOE ID:
6741
Pollutant:
Lindane/gamma Hexachlorocyclohexane (gamma-HCH)
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Total
Beneficial Use:
Warm Freshwater Habitat
Number of Samples:
2
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Two fish fillet samples were taken at 1 location in the lake. The samples were generally collected in 10/1989 and 12/1999. Of these two samples, neither exceeded the NAS tissue guideline (TSMP, 2007).
Line of Evidence (LOE) for Decision ID 170582, Mercury
Region 7
Wiest Lake
LOE ID:
132965
Pollutant:
Mercury
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Wildlife Habitat
Number of Samples:
1
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP RWB7 Monitoring data for Wiest Lake to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the water quality standard for Mercury. This LOE contains data only for trophic level 4 fish. The concentration of Mercury in fish collected within the same calendar year, for the same trophic level were averaged into a single sample for comparison with the objective. A total of 26 fish were aggregated into 1 annual averages, which consisted of 5 fish species (1 composite(s) of Channel Catfish each composed of 4 fish per composite, 1 composite(s) of Channel Catfish each composed of 5 fish per composite, 8 composite(s) of Largemouth Bass each composed of 1 fish per composite, 1 composite(s) of Black Crappie each composed of 4 fish per composite, 1 composite(s) of Black Crappie each composed of 5 fish per composite). This LOE does not contain data from fish whos average length was outside of the legal size limits as described by the California Department of Fish and Wildlife Fishing Regulations.
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
The Statewide Sport Fish Water Quality Objective for the protection of Wildlife Habitat comes from the Statewide Water Quality Control Plan for Inland Surface Waters, Enclosed Bays, and Estuaries of California, and is 0.2 mg/Kg wet weight skinless fillet samples of trophic level 3, or trophic level 4 fish (whichever is highest in the water body) over a one year averaging period. If trophic level 3 fish are used in the assessment then the Prey Fish Water Quality Objective must also be used to determine that the Sport Fish Objective is being met. Trophic levels of applicable fish are defined in, but not limited to those in Attachment C of the Final Regulatory Language document (Appendix A) of State Water Resources Control Board Resolution No. 2017-0027.
Basin Plan: No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (CRBRWQCB, 2006).
Samples were collected from the interior of Wiest Lake.
Temporal Representation:
Two largemouth bass fillet composite samples were collected in 10/1989 and 12/1999.
Environmental Conditions:
QAPP Information:
The field procedures are described in TSMP Data Reports and associated Appendices. CDFG's Laboratory applies Quality Assurance Program Plan procedures for laboratory Quality Assurance and Quality Control, as described in Rasmussen (1993).
Line of Evidence (LOE) for Decision ID 164480, Lindane/gamma Hexachlorocyclohexane (gamma-HCH)
Region 7
Wiest Lake
LOE ID:
46193
Pollutant:
Lindane/gamma Hexachlorocyclohexane (gamma-HCH)
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:
2
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for HCH, gamma. Six composites were generated from two species: black crappie and channel catfish. Composites comprised of 3 - 4 fish for black crappie and 2 -3 fish for channel catfish. Composites collected at the same time on the same day for the same species were averaged in accordance with the listing policy.
No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (Water Quality Control Plan, Colorado River Basin).
The modified OEHHA Fish Contaminant Goal for lindane in fish tissue is 4.6 ppb. This screening level assumes an average body weight of 70 kg and a consumption rate of 32 g/day for a 30 year exposure over a 70-year lifetime. This constituent is a carcinogen therefore the risk level is set to one in a million. A cooking reduction factor of 1 is applied for skin-off fillets.
Line of Evidence (LOE) for Decision ID 170582, Mercury
Region 7
Wiest Lake
LOE ID:
133068
Pollutant:
Mercury
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Wildlife Habitat
Number of Samples:
1
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP RWB7 Monitoring data for Wiest Lake to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the water quality standard for Mercury. This LOE contains data only for trophic level 3 fish. The concentration of Mercury in fish collected within the same calendar year, for the same trophic level were averaged into a single sample for comparison with the objective. A total of 3 fish were aggregated into 1 annual averages, which consisted of 1 fish species (1 composite(s) of Redear Sunfish each composed of 3 fish per composite).
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
The Statewide Sport Fish Water Quality Objective for the protection of Wildlife Habitat comes from the Statewide Water Quality Control Plan for Inland Surface Waters, Enclosed Bays, and Estuaries of California, and is 0.2 mg/Kg wet weight skinless fillet samples of trophic level 3, or trophic level 4 fish (whichever is highest in the water body) over a one year averaging period. If trophic level 3 fish are used in the assessment then the Prey Fish Water Quality Objective must also be used to determine that the Sport Fish Objective is being met. Trophic levels of applicable fish are defined in, but not limited to those in Attachment C of the Final Regulatory Language document (Appendix A) of State Water Resources Control Board Resolution No. 2017-0027.
Line of Evidence (LOE) for Decision ID 164480, Lindane/gamma Hexachlorocyclohexane (gamma-HCH)
Region 7
Wiest Lake
LOE ID:
126388
Pollutant:
Lindane/gamma Hexachlorocyclohexane (gamma-HCH)
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Warm Freshwater Habitat
Number of Samples:
3
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP RWB7 Monitoring data for Wiest Lake to determine beneficial use support and the results are as follows 0 of the 3 samples exceeded the water quality standard for HCH, gamma-. Data were collected for 3 fish species (1 composite(s) of Channel Catfish each composed of 3 fish per composite, 1 composite(s) of Channel Catfish each composed of 9 fish per composite, 1 composite(s) of Striped Bass each composed of 3 fish per composite).
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
National Academy of Science guidelines (NAS 1972) establish a maximum Lindane concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Line of Evidence (LOE) for Decision ID 164480, Lindane/gamma Hexachlorocyclohexane (gamma-HCH)
Region 7
Wiest Lake
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Line of Evidence (LOE) for Decision ID 170582, Mercury
Region 7
Wiest Lake
LOE ID:
133212
Pollutant:
Mercury
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Wildlife Habitat
Number of Samples:
1
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP RWB7 Monitoring data for Wiest Lake to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the water quality standard for Mercury. This LOE contains data only for trophic level 3 fish. The concentration of Mercury in fish collected within the same calendar year, for the same trophic level were averaged into a single sample for comparison with the objective. A total of 3 fish were aggregated into 1 annual averages, which consisted of 1 fish species (1 composite(s) of Redear Sunfish each composed of 3 fish per composite). This LOE does not contain data from fish whos average length was outside of the legal size limits as described by the California Department of Fish and Wildlife Fishing Regulations.
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
The Statewide Sport Fish Water Quality Objective for the protection of Wildlife Habitat comes from the Statewide Water Quality Control Plan for Inland Surface Waters, Enclosed Bays, and Estuaries of California, and is 0.2 mg/Kg wet weight skinless fillet samples of trophic level 3, or trophic level 4 fish (whichever is highest in the water body) over a one year averaging period. If trophic level 3 fish are used in the assessment then the Prey Fish Water Quality Objective must also be used to determine that the Sport Fish Objective is being met. Trophic levels of applicable fish are defined in, but not limited to those in Attachment C of the Final Regulatory Language document (Appendix A) of State Water Resources Control Board Resolution No. 2017-0027.
Line of Evidence (LOE) for Decision ID 170582, Mercury
Region 7
Wiest Lake
LOE ID:
133295
Pollutant:
Mercury
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Wildlife Habitat
Number of Samples:
1
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP RWB7 Monitoring data for Wiest Lake to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the water quality standard for Mercury. This LOE contains data only for trophic level 4 fish. The concentration of Mercury in fish collected within the same calendar year, for the same trophic level were averaged into a single sample for comparison with the objective. A total of 16 fish were aggregated into 1 annual averages, which consisted of 3 fish species (2 composite(s) of Channel Catfish each composed of 3 fish per composite, 1 composite(s) of Black Crappie each composed of 4 fish per composite, 2 composite(s) of Black Crappie each composed of 3 fish per composite). This LOE does not contain data from fish whos average length was outside of the legal size limits as described by the California Department of Fish and Wildlife Fishing Regulations.
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
The Statewide Sport Fish Water Quality Objective for the protection of Wildlife Habitat comes from the Statewide Water Quality Control Plan for Inland Surface Waters, Enclosed Bays, and Estuaries of California, and is 0.2 mg/Kg wet weight skinless fillet samples of trophic level 3, or trophic level 4 fish (whichever is highest in the water body) over a one year averaging period. If trophic level 3 fish are used in the assessment then the Prey Fish Water Quality Objective must also be used to determine that the Sport Fish Objective is being met. Trophic levels of applicable fish are defined in, but not limited to those in Attachment C of the Final Regulatory Language document (Appendix A) of State Water Resources Control Board Resolution No. 2017-0027.
Line of Evidence (LOE) for Decision ID 170582, Mercury
Region 7
Wiest Lake
LOE ID:
133271
Pollutant:
Mercury
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Wildlife Habitat
Number of Samples:
1
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP Sportfish Contamination in Lakes and Resrv data for Wiest Lake to determine beneficial
LOE ID:
46310
Pollutant:
Lindane/gamma Hexachlorocyclohexane (gamma-HCH)
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Warm Freshwater Habitat
Number of Samples:
1
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for HCH, gamma. One composite (3 fish per composite) was generated from one species: channel catfish. Details of the compositing protocol can be found in the March 2009 report entitled: "Contaminants in Fish from California Lakes and Reservoirs: Technical Report on Year One of a Two-Year Screening Study" (SWAMP, 2009).
No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (Water Quality Control Plan, Colorado River Basin).
National Academy of Science guidelines (NAS 1972) establish a maximum Lindane concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Data for this line of evidence for Wiest Lake was collected at 1 monitoring site [ Wiest Lake_BOG - 723PWT019]. Samples were collected from 1 location. Individual sample locations consisted of an area within a given waterbody from which fish tissue samples were collected. The number of sample locations per waterbody was based on the overall size of the waterbody (SWAMP, 2010). Specifics of individual sampling locations can be found in the supplemental report entitled "Cruise Report for the Surface Waters Ambient Monitoring Program (SWAMP) Bioaccumulation Screening Study in California Lakes and Reservoirs, Sampling Dates: June 2007- March 2008" (SWAMP, 2008).
Temporal Representation:
Data was collected on a single day 11/1/2007.
Environmental Conditions:
Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:
Samples were collected, processed, and analyzed in accordance with the methods described in Quality Assurance Project Plan "Screening Study of Bioaccumulation in California Lakes and Reservoirs." (SWAMP, 2002).
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
The Statewide Sport Fish Water Quality Objective for the protection of Wildlife Habitat comes from the Statewide Water Quality Control Plan for Inland Surface Waters, Enclosed Bays, and Estuaries of California, and is 0.2 mg/Kg wet weight skinless fillet samples of trophic level 3, or trophic level 4 fish (whichever is highest in the water body) over a one year averaging period. If trophic level 3 fish are used in the assessment then the Prey Fish Water Quality Objective must also be used to determine that the Sport Fish Objective is being met. Trophic levels of applicable fish are defined in, but not limited to those in Attachment C of the Final Regulatory Language document (Appendix A) of State Water Resources Control Board Resolution No. 2017-0027.
Line of Evidence (LOE) for Decision ID 170582, Mercury
Region 7
Wiest Lake
LOE ID:
133337
Pollutant:
Mercury
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Wildlife Habitat
Number of Samples:
1
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP RWB7 Monitoring data for Wiest Lake to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the water quality standard for Mercury. This LOE contains data only for trophic level 4 fish. The concentration of Mercury in fish collected within the same calendar year, for the same trophic level were averaged into a single sample for comparison with the objective. A total of 31 fish were aggregated into 1 annual averages, which consisted of 6 fish species (1 composite(s) of Channel Catfish each composed of 4 fish per composite, 1 composite(s) of Channel Catfish each composed of 5 fish per composite, 11 composite(s) of Largemouth Bass each composed of 1 fish per composite, 2 composite(s) of Striped Bass each composed of 1 fish per composite, 1 composite(s) of Black Crappie each composed of 4 fish per composite, 1 composite(s) of Black Crappie each composed of 5 fish per composite).
Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for HCH, gamma. Six composites were generated from two species: black crappie and channel catfish. Composites comprised of 3 - 4 fish for black crappie and 2 -3 fish for channel catfish. Composites collected at the same time on the same day for the same species were averaged in accordance with the listing policy.
No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (Water Quality Control Plan, Colorado River Basin).
National Academy of Science guidelines (NAS 1972) establish a maximum Lindane concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Line of Evidence (LOE) for Decision ID 164480, Lindane/gamma Hexachlorocyclohexane (gamma-HCH)
Region 7
Wiest Lake
LOE ID:
126373
Pollutant:
Lindane/gamma Hexachlorocyclohexane (gamma-HCH)
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Warm Freshwater Habitat
Number of Samples:
4
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed RWB7 TMDL data for Wiest Lake to determine beneficial use support and the results are as follows 0 of the 4 samples exceeded the water quality standard for HCH, gamma-. Data were collected for 4 fish species (1 composite(s) of Largemouth Bass each composed of 1 fish per composite, 1 composite(s) of Black Crappie each composed of 5 fish per composite, 1 composite(s) of Common Carp each composed of 5 fish per composite, 1 composite(s) of Largemouth Bass each composed of 5 fish per composite).
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
The Statewide Sport Fish Water Quality Objective for the protection of Wildlife Habitat comes from the Statewide Water Quality Control Plan for Inland Surface Waters, Enclosed Bays, and Estuaries of California, and is 0.2 mg/Kg wet weight skinless fillet samples of trophic level 3, or trophic level 4 fish (whichever is highest in the water body) over a one year averaging period. If trophic level 3 fish are used in the assessment then the Prey Fish Water Quality Objective must also be used to determine that the Sport Fish Objective is being met. Trophic levels of applicable fish are defined in, but not limited to those in Attachment C of the Final Regulatory Language document (Appendix A) of State Water Resources Control Board Resolution No. 2017-0027.
Line of Evidence (LOE) for Decision ID 170582, Mercury
Region 7
Wiest Lake
LOE ID:
133146
Pollutant:
Mercury
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Wildlife Habitat
Number of Samples:
1
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP Sportfish Contamination in Lakes and Resrv data for Wiest Lake to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the water quality standard for Mercury. This LOE contains data only for trophic level 4 fish. The concentration of Mercury in fish collected within the same calendar year, for the same trophic level were averaged into a single sample for comparison with the objective. A total of 5 fish were aggregated into 1 annual averages, which consisted of 1 fish species (1 composite(s) of Black Crappie each composed of 5 fish per composite).
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
The Statewide Sport Fish Water Quality Objective for the protection of Wildlife Habitat comes from the Statewide Water Quality Control Plan for Inland Surface Waters, Enclosed Bays, and Estuaries of California, and is 0.2 mg/Kg wet weight skinless fillet samples of trophic level 3, or trophic level 4 fish (whichever is highesrds/region_7/2017/ref4410.zip">Water Quality Assessment Data for the 2018 solicitation cycle submitted through CEDEN for RWB7 TMDL.
SWAMP Data:
SWAMP
Water Quality Objective/Criterion:
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
National Academy of Science guidelines (NAS 1972) establish a maximum Lindane concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Line of Evidence (LOE) for Decision ID 164480, Lindane/gamma Hexachlorocyclohexane (gamma-HCH)
Region 7
Wiest Lake
LOE ID:
5558
Pollutant:
Lindane/gamma Hexachlorocyclohexane (gamma-HCH)
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Total
Beneficial Use:
Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:
2
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Two fish fillet samples were taken at 1 location in the lake. The samples were generally collected in 10/1989 and 12/1999. Of these two samples, neither exceeded the OEHHA Screening Value (TSMP, 2007).
Basin Plan: No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (CRBRWQCB, 2006).
Line of Evidence (LOE) for Decision ID 170582, Mercury
Region 7
Wiest Lake
LOE ID:
133001
Pollutant:
Mercury
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Wildlife Habitat
Number of Samples:
1
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP RWB7 Monitoring data for Wiest Lake to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the water quality standard for Mercury. This LOE contains data only for trophic level 4 fish. The concentration of Mercury in fish collected within the same calendar year, for the same trophic level were averaged into a single sample for comparison with the objective. A total of 16 fish were aggregated into 1 annual averages, which consisted of 3 fish species (2 composite(s) of Channel Catfish each composed of 3 fish per composite, 1 composite(s) of Black Crappie each composed of 4 fish per composite, 2 composite(s) of Black Crappie each composed of 3 fish per composite).
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
The Statewide Sport Fish Water Quality Objective for the protection of Wildlife Habitat comes from the Statewide Water Quality Control Plan for Inland Surface Waters, Enclosed Bays, and Estuaries of California, and is 0.2 mg/Kg wet weight skinless fillet samples of trophic level 3, or trophic level 4 fish (whichever is highest in the water body) over a one year averaging period. If trophic level 3 fish are used in the assessment then the Prey Fish Water Quality Objective must also be used to determine that the Sport Fish Objective is being met. Trophic levels of applicable fish are defined in, but not limited to those in Attachment C of the Final Regulatory Language document (Appendix A) of State Water Resources Control Board Resolution No. 2017-0027.
The field procedures are described in TSMP Data Reports and associated Appendices. CDFG's Laboratory applies Quality Assurance Program Plan procedures for laboratory Quality Assurance and Quality Control, as described in Rasmussen (1993).
Line of Evidence (LOE) for Decision ID 164480, Lindane/gamma Hexachlorocyclohexane (gamma-HCH)
Region 7
Wiest Lake
LOE ID:
126357
Pollutant:
Lindane/gamma Hexachlorocyclohexane (gamma-HCH)
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
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:
Water Board staff assessed RWB7 TMDL data for Wiest Lake to determine beneficial use support and the results are as follows 0 of the 4 samples exceeded the water quality standard for HCH, gamma-. Data were collected for 4 fish species (1 composite(s) of Largemouth Bass each composed of 1 fish per composite, 1 composite(s) of Black Crappie each composed of 5 fish per composite, 1 composite(s) of Common Carp each composed of 5 fish per composite, 1 composite(s) of Largemouth Bass each composed of 5 fish per composite).
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
The modified OEHHA Fish Contaminant Goal for lindane in fish tissue is 4.6 ppb. This screening level assumes an average body weight of 70 kg and a consumption rate of 32 g/day for a 30 year exposure over a 70-year lifetime. This constituent is a carcinogen therefore the risk level is set to one in a million. A cooking reduction factor of 1 is applied for skin-off fillets. (Klasing, S., and R. Brodberg, 2008; OEHHA, 2005)
Do Not List on 303(d) list (TMDL required list)(2018)
Revision Status
Revised
Impairment from Pollutant or Pollution:
Pollutant
Regional Board Conclusion:
Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available
Regional Board Decision Recommendation:
After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
State Board Review of Regional Board Conclusion and Recommendation:
State Board Decision Recommendation:
After review of 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 it cannot be determined if applicable water quality standards are not being exceeded.
Listing Extent:
Line of Evidence (LOE) for Decision ID 164481, Mirex
Region 7
Wiest Lake
LOE ID:
126450
Pollutant:
Mirex
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:
0
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Waterboard staff assessed RWB7 TMDL data for Wiest Lake to determine beneficial use support and the results are as follows: Zero of Zero samples exceeded the water quality standard for Mirex. Although data was collected for 4 fish species (1 composite(s) of Black Crappie each composed of 5 fish per composite, 1 composite(s) of Common Carp each composed of 5 fish per composite, 1 composite(s) of Largemouth Bass each composed of 1 fish per composite, 1 composite(s) of Largemouth Bass each composed of 5 fish per composite), all 4 sample(s) had to be thrown out due to quantitation issues.
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
The modified OEHHA Fish Contaminant Goal for mirex in fish tissue is 0.28 ppb. This screening level assumes an average body weight of 70 kg and a consumption rate of 32 g/day. This constituent is a carcinogen therefore the risk level is set to one in a million. A cooking reduction factor of 1 is applied for skin-off fillets. (Klasing, S., and R. Brodberg, 2008; OEHHA, 1992)
Line of Evidence (LOE) for Decision ID 164481, Mirex
Region 7
Wiest Lake
LOE ID:
46318
Pollutant:
Mirex
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:
0
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 0 samples exceed the criterion for Mirex. One composite (3 fish per composite) was generated from one species: channel catfish. Details of the compositing protocol can be found in the March 2009 report entitled: "Contaminants in Fish from California Lakes and Reservoirs: Technical Report on Year One of a Two-Year Screening Study" (SWAMP, 2009). One sample was not used in the assessment because the laboratory data reporting limit(s) was above the objective and therefore the results could not be quantified with the level of certainty required by the Listing Policy.
No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (Water Quality Control Plan, Colorado River Basin).
The modified OEHHA Fish Contaminant Goal for mirex in fish tissue is 0.28 ppb. This screening level assumes an average body weight of 70 kg and a consumption rate of 32 g/day. A cooking reduction factor of 1 is applied for skin-off fillets.
Data for this line of evidence for Wiest Lake was collected at 1 monitoring site [ Wiest Lake_BOG - 723PWT019]. Samples were collected from 1 location. Individual sample locations consisted of an area within a given waterbody from which fish tissue samples were collected. The number of sample locations per waterbody was based on the overall size of the waterbody (SWAMP, 2010). Specifics of individual sampling locations can be found in the supplemental report entitled "Cruise Report for the Surface Waters Ambient Monitoring Program (SWAMP) Bioaccumulation Screening Study in California Lakes and Reservoirs, Sampling Dates: June 2007- March 2008" (SWAMP, 2008).
Temporal Representation:
Data was collected on a single day 11/1/2007.
Environmental Conditions:
Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:
Samples were collected, processed, and analyzed in accordance with the methods described in Quality Assurance Project Plan "Screening Study of Bioaccumulation in California Lakes and Reservoirs." (SWAMP, 2002).
Line of Evidence (LOE) for Decision ID 164481, Mirex
Region 7
Wiest Lake
LOE ID:
126616
Pollutant:
Mirex
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:
0
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Waterboard staff assessed SWAMP RWB7 Monitoring data for Wiest Lake to determine beneficial use support and the results are as follows: Zero of Zero samples exceeded the water quality standard for Mirex. Although data was collected for 3 fish species (1 composite(s) of Channel Catfish each composed of 3 fish per composite, 1 composite(s) of Channel Catfish each composed of 9 fish per composite, 1 composite(s) of Striped Bass each composed of 3 fish per composite), all 3 sample(s) had to be thrown out due to quantitation issues.
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
The modified OEHHA Fish Contaminant Goal for mirex in fish tissue is 0.28 ppb. This screening level assumes an average body weight of 70 kg and a consumption rate of 32 g/day. This constituent is a carcinogen therefore the risk level is set to one in a million. A cooking reduction factor of 1 is applied for skin-off fillets. (Klasing, S., and R. Brodberg, 2008; OEHHA, 1992)
Do Not List on 303(d) list (TMDL required list)(2018)
Revision Status
Revised
Impairment from Pollutant or Pollution:
Pollutant
Regional Board Conclusion:
This pollutant is being considered for placement on the section 303(d) list under section 3.5 of the Listing Policy. Under section 3.5 a single line of evidence is necessary to assess listing status. Eighteen lines of evidence are available in the administrative record to assess the pollutant.
COMM (Sport fish objective) Fish used in the COMM assessment are limited to lengths that are within Calif. Dept. of Fish and Wildlife legal size limits applicable to this waterbody. LOE 132928: 0 of 1 samples exceed the mercury objective and consist of 31 trophic level 4 fish. LOE 133292: 0 of 1 samples exceed the mercury objective and consist of 3 trophic level 3 fish. (CDFW legal limit) LOE 133128: 0 of 1 samples exceed the mercury objective and consist of 3 trophic level 3 fish. LOE 133264: 0 of 1 samples exceed the mercury objective and consist of 16 trophic level 4 fish. LOE 133144: 0 of 1 samples exceed the mercury objective and consist of 5 trophic level 4 fish. LOE 133100: 0 of 1 samples exceed the mercury objective and consist of 16 trophic level 4 fish. (CDFW legal limit) LOE 133234: 0 of 1 samples exceed the mercury objective and consist of 26 trophic level 4 fish. (CDFW legal limit) LOE 133134: 0 of 1 samples exceed the mercury objective and consist of 5 trophic level 4 fish. (CDFW legal limit) LOE 334343: 0 of 1 samples exceed the mercury objective and consist of 10 trophic level 4 fish. (CDFW legal limit)
WILD (Sport fish objective) LOE 133337: 0 of 1 samples exceed the mercury objective and consist of 31 trophic level 4 fish. LOE 133212: 0 of 1 samples exceed the mercury objective and consist of 3 trophic level 3 fish. (CDFW legal limit) LOE 133068: 0 of 1 samples exceed the mercury objective and consist of 3 trophic level 3 fish. LOE 133001: 0 of 1 samples exceed the mercury objective and consist of 16 trophic level 4 fish. LOE 133146: 0 of 1 samples exceed the mercury objective and consist of 5 trophic level 4 fish. LOE 133295: 0 of 1 samples exceed the mercury objective and consist of 16 trophic level 4 fish. (CDFW legal limit) LOE 132965: 0 of 1 samples exceed the mercury objective and consist of 26 trophic level 4 fish. (CDFW legal limit) LOE 133271: 0 of 1 samples exceed the mercury objective and consist of 5 trophic level 4 fish. (CDFW legal limit) LOE 334380: 0 of 1 samples exceed the mercury objective and consist of 10 trophic level 4 fish. (CDFW legal limit)
While there is not a specific health advisory for Wiest Lake, in 2017 OEHHA released Health Advisory and Guidelines for Eating Fish from Wiest Lake (Imperial County). Fishing occurs at Wiest Lake and the fish species (Largemouth Bass) used for the assessments are part of 2017 Advisory.
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. Tissue samples were compared with the sport fish objective and 0 of 4 samples exceed for WILD beneficial use and 0 of 4 samples exceed for the COMM beneficial use. The samples consist of trophic level 4 fish and are from a minimum of 2 annual averages and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.
Regional Board Decision Recommendation:
After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because applicable water quality standards are not being exceeded.
State Board Review of Regional Board Conclusion and Recommendation:
State Board Decision Recommendation:
Decision written by SWRCB staff.
Listing Extent:
Line of Evidence (LOE) for Decision ID 170582, Mercury
Region 7
Wiest Lake
LOE ID:
133292
Pollutant:
Mercury
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:
1
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP RWB7 Monitoring data for Wiest Lake to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the water quality standard for Mercury. This LOE contains data only for trophic level 3 fish. The concentration of Mercury in fish collected within the same calendar year, for the same trophic level were averaged into a single sample for comparison with the objective. A total of 3 fish were aggregated into 1 annual averages, which consisted of 1 fish species (1 composite(s) of Redear Sunfish each composed of 3 fish per composite). This LOE does not contain data from fish whos average length was outside of the legal size limits as described by the California Department of Fish and Wildlife Fishing Regulations.
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
The Statewide Sport Fish Water Quality Objective for the protection of the Commercial and Sport Fishing beneficial comes from the Statewide Water Quality Control Plan for Inland Surface Waters, Enclosed Bays, and Estuaries of California, and is 0.2 mg/Kg wet weight skinless fillet samples of trophic level 3, or trophic level 4 fish (whichever is highest in the water body) over a one year averaging period. Trophic levels of applicable fish are defined in, but not limited to those in Attachment C of the Final Regulatory Language document (Appendix A) of State Water Resources Control Board Resolution No. 2017-0027.
Line of Evidence (LOE) for Decision ID 164481, Mirex
Region 7
Wiest Lake
LOE ID:
46226
Pollutant:
Mirex
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:
0
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 0 samples exceed the criterion for Mirex. Six composites were generated from two species: black crappie and channel catfish. Composites comprised of 3 - 4 fish for black crappie and 2 -3 fish for channel catfish. Six samples were not used in the assessment because the laboratory data reporting limit(s) was above the objective and therefore the results could not be quantified with the level of certainty required by the Listing Policy.
No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (Water Quality Control Plan, Colorado River Basin).
The modified OEHHA Fish Contaminant Goal for mirex in fish tissue is 0.28 ppb. This screening level assumes an average body weight of 70 kg and a consumption rate of 32 g/day. A cooking reduction factor of 1 is applied for skin-off fillets.
assessed SWAMP RWB7 Monitoring data for Wiest Lake to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the water quality standard for Mercury. This LOE contains data only for trophic level 3 fish. The concentration of Mercury in fish collected within the same calendar year, for the same trophic level were averaged into a single sample for comparison with the objective. A total of 3 fish were aggregated into 1 annual averages, which consisted of 1 fish species (1 composite(s) of Redear Sunfish each composed of 3 fish per composite).
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
The Statewide Sport Fish Water Quality Objective for the protection of the Commercial and Sport Fishing beneficial comes from the Statewide Water Quality Control Plan for Inland Surface Waters, Enclosed Bays, and Estuaries of California, and is 0.2 mg/Kg wet weight skinless fillet samples of trophic level 3, or trophic level 4 fish (whichever is highest in the water body) over a one year averaging period. Trophic levels of applicable fish are defined in, but not limited to those in Attachment C of the Final Regulatory Language document (Appendix A) of State Water Resources Control Board Resolution No. 2017-0027.
Line of Evidence (LOE) for Decision ID 170582, Mercury
Region 7
Wiest Lake
LOE ID:
132928
Pollutant:
Mercury
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:
1
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP RWB7 Monitoring data for Wiest Lake to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the water quality standard for Mercury. This LOE contains data only for trophic level 4 fish. The concentration of Mercury in fish collected within the same calendar year, for the same trophic level were averaged into a single sample for comparison with the objective. A total of 31 fish were aggregated into 1 annual averages, which consisted of 6 fish species (1 composite(s) of Channel Catfish each composed of 5 fish per composite, 1 composite(s) of Channel Catfish each composed of 4 fish per composite, 11 composite(s) of Largemouth Bass each composed of 1 fish per composite, 2 composite(s) of Striped Bass each composed of 1 fish per composite, 1 composite(s) of Black Crappie each composed of 5 fish per composite, 1 composite(s) of Black Crappie each composed of 4 fish per composite).
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
The Statewide Sport Fish Water Quality Objective for the protection of the Commercial and Sport Fishing beneficial comes from the Statewide Water Quality Control Plan for Inland Surface Waters, Enclosed Bays, and Estuaries of California, and is 0.2 mg/Kg wet weight skinless fillet samples of trophic level 3, or trophic level 4 fish (whichever is highest in the water body) over a one year averaging period. Trophic levels of applicable fish are defined in, but not limited to those in Attachment C of the Final Regulatory Language document (Appendix A) of State Water Resources Control Board Resolution No. 2017-0027.
Line of Evidence (LOE) for Decision ID 170582, Mercury
Region 7
Wiest Lake
LOE ID:
334343
Pollutant:
Mercury
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:
1
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP Sportfish Contamination in Lakes and Resrv data for Wiest Lake to determine beneficial use support and the results are as follows: 0 of 1 sample exceeded the water quality threshold for Mercury. Monitors collected 10 composites of Largemouth Bass composed of 1 fish each. This LOE contains data only for trophic level 4 fish whose average length was inside the legal size limits as described by the California Department of Fish and Wildlife Fishing Regulations. Fish collected within the same calendar year were averaged into a single sample for comparison with the objective. All 10 fish were collected in a single calendar year, which resulted in 1 independent sample.
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
The Statewide Sport Fish Water Quality Objective for the protection of the Commercial and Sport Fishing beneficial comes from the Statewide Water Quality Control Plan for Inland Surface Waters, Enclosed Bays, and Estuaries of California, and is 0.2 mg/Kg wet weight skinless fillet samples of trophic level 3, or trophic level 4 fish (whichever is highest in the water body) over a one year averaging period. Trophic levels of applicable fish are defined in, but not limited to those in Attachment C of the Final Regulatory Language document (Append
DECISION ID
158765
Region 7
Wiest Lake
Pollutant:
Oxygen, Dissolved
Final Listing Decision:
Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:
New Decision
Revision Status
Revised
Impairment from Pollutant or Pollution:
Pollutant
Regional Board Conclusion:
Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available
Regional Board Decision Recommendation:
After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
State Board Review of Regional Board Conclusion and Recommendation:
State Board Decision Recommendation:
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 it cannot be determined if applicable water quality standards are not being exceeded.
Listing Extent:
Line of Evidence (LOE) for Decision ID 158765, Oxygen, Dissolved
Region 7
Wiest Lake
LOE ID:
335729
Pollutant:
Oxygen, Dissolved
LOE Subgroup:
Pollutant-Water
Matrix:
Water
Fraction:
None
Beneficial Use:
Cold Freshwater Habitat
Number of Samples:
3
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP RWB7 Monitoring data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for Oxygen, Dissolved.
Water Quality Control Plan, Colorado River Basin, Cold Water Habitat Objective, Chapter III, states the following: The dissolved oxygen concentration for cold water habitats shall not be reduced below 8.0 mg/l at any time.
Line of Evidence (LOE) for Decision ID 158765, Oxygen, Dissolved
Region 7
Wiest Lake
LOE ID:
335698
Pollutant:
Oxygen, Dissolved
LOE Subgroup:
Pollutant-Water
Matrix:
Water
Fraction:
None
Beneficial Use:
Warm Freshwater Habitat
Number of Samples:
3
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP RWB7 Monitoring data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for Oxygen, Dissolved.
Water Quality Control Plan, Colorado River Basin, WARM Water Habitat Objective, Chapter III, states the following: The dissolved oxygen concentration for warm water habitats shall not be reduced below 5.0 mg/l at any time.
Data were collected from 1 station(s). Station Code(s): 723PWT019 (Wiest Lake_BOG).
Temporal Representation:
Data for this line of evidence were collected between 2019-06-03 and 2019-06-03. When composited fish were collected over multiple days, the first day of fish collection was used as the sample date in the LOE, both for LOE writing, and for averaging period purposes.
Line of Evidence (LOE) for Decision ID 170582, Mercury
Region 7
Wiest Lake
LOE ID:
334380
Pollutant:
Mercury
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Wildlife Habitat
Number of Samples:
1
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP Sportfish Contamination in Lakes and Resrv data for Wiest Lake to determine beneficial use support and the results are as follows: 0 of 1 sample exceeded the water quality threshold for Mercury. Monitors collected 10 composites of Largemouth Bass composed of 1 fish each. This LOE contains data only for trophic level 4 fish whose average length was inside the legal size limits as described by the California Department of Fish and Wildlife Fishing Regulations. Fish collected within the same calendar year were averaged into a single sample for comparison with the objective. All 10 fish were collected in a single calendar year, which resulted in 1 independent sample.
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
The Statewide Sport Fish Water Quality Objective for the protection of Wildlife Habitat comes from the Statewide Water Quality Control Plan for Inland Surface Waters, Enclosed Bays, and Estuaries of California, and is 0.2 mg/Kg wet weight skinless fillet samples of trophic level 3, or trophic level 4 fish (whichever is highest in the water body) over a one year averaging period. If trophic level 3 fish are used in the assessment then the Prey Fish Water Quality Objective must also be used to determine that the Sport Fish Objective is being met. Trophic levels of applicable fish are defined in, but not limited to those in Attachment C of the Final Regulatory Language document (Appendix A) of State Water Resources Control Board Resolution No. 2017-0027.
Data were collected from 1 station(s). Station Code(s): 723PWT019 (Wiest Lake_BOG).
Temporal Representation:
Data for this line of evidence were collected between 2019-06-03 and 2019-06-03. When composited fish were collected over multiple days, the first day of fish collection was used as the sample date in the LOE, both for LOE writing, and for averaging period purposes.
Environmental Conditions:
DECISION ID
158767
Region 7
Wiest Lake
Pollutant:
Selenium
Final Listing Decision:
Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:
Do Not List on 303(d) list (TMDL required list)(2018)
Revision Status
Revised
Impairment from Pollutant or Pollution:
Pollutant
Regional Board Conclusion:
Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available
Regional Board Decision Recommendation:
After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
State Board Review of Regional Board Conclusion and Recommendation:
State Board Decision Recommendation:
After review of 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 it cannot be determined if applicable water quality standards are not being exceeded.
Listing Extent:
Line of Evidence (LOE) for Decision ID 158767, Selenium
Region 7
Wiest Lake
LOE ID:
46330
Pollutant:
Selenium
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:
1
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Selenium. One composite (3 fish per composite) was generated from one species: channel catfish. Details of the compositing protocol can be found in the March 2009 report entitled: "Contaminants in Fish from California Lakes and Reservoirs: Technical Report on Year One of a Two-Year Screening Study" (SWAMP, 2009).
Line of Evidence (LOE) for Decision ID 170582, Mercury
Region 7
Wiest Lake
LOE ID:
133144
Pollutant:
Mercury
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:
1
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP Sportfish Contamination in Lakes and Resrv data for Wiest Lake to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the water quality standard for Mercury. This LOE contains data only for trophic level 4 fish. The concentration of Mercury in fish collected within the same calendar year, for the same trophic level were averaged into a single sample for comparison with the objective. A total of 5 fish were aggregated into 1 annual averages, which consisted of 1 fish species (1 composite(s) of Black Crappie each composed of 5 fish per composite).
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
The Statewide Sport Fish Water Quality Objective for the protection of the Commercial and Sport Fishing beneficial comes from the Statewide Water Quality Control Plan for Inland Surface Waters, Enclosed Bays, and Estuaries of California, and is 0.2 mg/Kg wet weight skinless fillet samples of trophic level 3, or trophic level 4 fish (whichever is highest in the water body) over a one year averaging period. Trophic levels of applicable fish are defined in, but not limited to those in Attachment C of the Final Regulatory Language document (Appendix A) of State Water Resources Control Board Resolution No. 2017-0027.
Line of Evidence (LOE) for Decision ID 170582, Mercury
Region 7
Wiest Lake
LOE ID:
SWAMP Data:
SWAMP
Water Quality Objective/Criterion:
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life (Water Quality Control Plan, Colorado River Basin).
The OEHHA Fish Contaminant Goal for selenium in fish tissue is 7.4 ppm. This screening level assumes an average body weight of 70 kg and a consumption rate of 32 g/day. A background dietary consumption rate of 0.114 mg/day is applied for this micronutrient.
Data for this line of evidence for Wiest Lake was collected at 1 monitoring site [ Wiest Lake_BOG - 723PWT019]. Samples were collected from 1 location. Individual sample locations consisted of an area within a given waterbody from which fish tissue samples were collected. The number of sample locations per waterbody was based on the overall size of the waterbody (SWAMP, 2010). Specifics of individual sampling locations can be found in the supplemental report entitled "Cruise Report for the Surface Waters Ambient Monitoring Program (SWAMP) Bioaccumulation Screening Study in California Lakes and Reservoirs, Sampling Dates: June 2007- March 2008" (SWAMP, 2008).
Temporal Representation:
Data was collected on a single day 11/1/2007.
Environmental Conditions:
Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:
Samples were collected, processed, and analyzed in accordance with the methods described in Quality Assurance Project Plan "Screening Study of Bioaccumulation in California Lakes and Reservoirs." (SWAMP, 2002).
Line of Evidence (LOE) for Decision ID 158767, Selenium
Region 7
Wiest Lake
LOE ID:
126513
Pollutant:
Selenium
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:
8
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP RWB7 Monitoring data for Wiest Lake to determine beneficial use support and the results are as follows 0 of the 8 samples exceeded the water quality standard for Selenium. Data were collected for 6 fish species (1 composite(s) of Black Crappie each composed of 4 fish per composite, 1 composite(s) of Black Crappie each composed of 5 fish per composite, 12 composite(s) of Channel Catfish each composed of 1 fish per composite, 12 composite(s) of Largemouth Bass each composed of 1 fish per composite, 1 composite(s) of Redear Sunfish each composed of 3 fish per composite, 2 composite(s) of Striped Bass each composed of 1 fish per composite).
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
The OEHHA Fish Contaminant Goal for selenium in fish tissue is 7.4 ppm. This screening level assumes an average body weight of 70 kg and a consumption rate of 32 g/day. A background dietary consumption rate of 0.114 mg/day is applied for this micronutrient. (Klasing, S., and R. Brodberg, 2008)
Line of Evidence (LOE) for Decision ID 158767, Selenium
Region 7
Wiest Lake
LOE ID:
46241
Pollutant:
Selenium
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:
2
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for Selenium. Six composites were generated from two species: black crappie and channel catfish. Composites comprised of 3 - 4 fish for black crappie and 2 -3 fish for channel catfish. Composites collected at the same time on the same day for the same species were averaged in accordance with the listing policy.
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life (Water Quality Control Plan, Colorado River Basin).
The OEHHA Fish Contaminant Goal for selenium in fish tissue is 7.4 ppm. This screening level assumes an average body weight of 70 kg and a consumption rate of 32 g/day. A background dietary consumption rate of 0.114 mg/day is applied for this micronutrient.
Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:
1
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP RWB7 Monitoring data for Wiest Lake to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the water quality standard for Mercury. This LOE contains data only for trophic level 4 fish. The concentration of Mercury in fish collected within the same calendar year, for the same trophic level were averaged into a single sample for comparison with the objective. A total of 16 fish were aggregated into 1 annual averages, which consisted of 3 fish species (2 composite(s) of Channel Catfish each composed of 3 fish per composite, 2 composite(s) of Black Crappie each composed of 3 fish per composite, 1 composite(s) of Black Crappie each composed of 4 fish per composite).
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
The Statewide Sport Fish Water Quality Objective for the protection of the Commercial and Sport Fishing beneficial comes from the Statewide Water Quality Control Plan for Inland Surface Waters, Enclosed Bays, and Estuaries of California, and is 0.2 mg/Kg wet weight skinless fillet samples of trophic level 3, or trophic level 4 fish (whichever is highest in the water body) over a one year averaging period. Trophic levels of applicable fish are defined in, but not limited to those in Attachment C of the Final Regulatory Language document (Appendix A) of State Water Resources Control Board Resolution No. 2017-0027.
Line of Evidence (LOE) for Decision ID 170582, Mercury
Region 7
Wiest Lake
LOE ID:
133100
Pollutant:
Mercury
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:
1
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP RWB7 Monitoring data for Wiest Lake to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the water quality standard for Mercury. This LOE contains data only for trophic level 4 fish. The concentration of Mercury in fish collected within the same calendar year, for the same trophic level were averaged into a single sample for comparison with the objective. A total of 16 fish were aggregated into 1 annual averages, which consisted of 3 fish species (2 composite(s) of Channel Catfish each composed of 3 fish per composite, 2 composite(s) of Black Crappie each composed of 3 fish per composite, 1 composite(s) of Black Crappie each composed of 4 fish per composite). This LOE does not contain data from fish whos average length was outside of the legal size limits as described by the California Department of Fish and Wildlife Fishing Regulations.
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
The Statewide Sport Fish Water Quality Objective for the protection of the Commercial and Sport Fishing beneficial comes from the Statewide Water Quality Control Plan for Inland Surface Waters, Enclosed Bays, and Estuaries of California, and is 0.2 mg/Kg wet weight skinless fillet samples of trophic level 3, or trophic level 4 fish (whichever is highest in the water body) over a one year averaging period. Trophic levels of applicable fish are defined in, but not limited to those in Attachment C of the Final Regulatory Language document (Appendix A) of State Water Resources Control Board Resolution No. 2017-0027.
Line of Evidence (LOE) for Decision ID 170582, Mercury
Region 7
Wiest Lake
LOE ID:
133234
Pollutant:
Mercury
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:
1
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP RWB7 Monitoring data for Wiest Lake to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the water quality standard for Mercury. This LOE contains data only for trophic level 4 fish. The concentration of Mercury in fish collected within the same calendar year, for the same trophic level were averaged into a single sample for comparison with the objective. A total of 26 fish were aggregated into 1 annual averages, which consisted of 5 fish species (1 composite(s) of Channel Catfish each composed of 4 fish per composite, 1 composite(s) of Channel Catfish each composed of 5 fish per composite, 8 composite(s) of Largemouth Bass each composed of 1 fish per composite, 1 composite(s) of Black Crappie each composed of 4 fish per composite, 1 composite(s) of Black Crappie each composed of 5 fish per composite). This LOE does not contain data from fish whos average length was outside of the legal size limits as described by the California Department of Fish and Wildlife Fishing Regulations.
Data Reference:
Line of Evidence (LOE) for Decision ID 158767, Selenium
Region 7
Wiest Lake
LOE ID:
5445
Pollutant:
Selenium
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Total
Beneficial Use:
Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:
2
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Two fish fillet samples were taken at 1 location in lake. The sample were generally collected in 10/1998 and 12/1999. Of these total samples, none exceeded the OEHHA Fish Contaminant Goal (TSMP, 2007).
Basin Plan: No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (CRBRWQCB, 2006).
Office of Environmental Health Hazard Assessment (OEHHA) Fish Contaminant Goal of 7400 ug/kg to protect human health when consuming fish (OEHHA, 2008).
Samples were collected from the interior of Wiest Lake.
Temporal Representation:
Two largemouth bass fillet composite samples were collected in 10/1989 and 12/1999.
Environmental Conditions:
QAPP Information:
The field procedures are described in TSMP Data Reports and associated Appendices. CDFG's Laboratory applies a Quality Assurance Program Plan procedures for laboratory Quality Assurance and Quality Control, as described in Rasmussen (1993).
Line of Evidence (LOE) for Decision ID 158767, Selenium
Region 7
Wiest Lake
LOE ID:
334398
Pollutant:
Selenium
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:
2
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP Sportfish Contamination in Lakes and Resrv data for Wiest Lake to determine beneficial use support and the results are as follows: 0 of 2 samples exceeded the water quality threshold for Selenium. Monitors collected 2 composites: 1 composite of Bluegill composed of 10 fish and 1 composite of Largemouth Bass composed of 10 fish. Because no composites were collected within the same averaging period, these composites represent 2 independent samples.
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
The OEHHA Fish Contaminant Goal for selenium in fish tissue is 7.4 ppm. This screening level assumes an average body weight of 70 kg and a consumption rate of 32 g/day. A background dietary consumption rate of 0.114 mg/day is applied for this micronutrient. (Klasing, S., and R. Brodberg, 2008)
Data were collected from 1 station(s). Station Code(s): 723PWT019 (Wiest Lake_BOG).
Temporal Representation:
Data for this line of evidence were collected between 2019-06-03 and 2019-06-03. When composited fish were collected over multiple days, the first day of fish collection was used as the sample date in the LOE, both for LOE writing, and for averaging period purposes.
boards.ca.gov/water_issues/programs/tmdl/records/region_7/2017/ref4408.zip">Water Quality Assessment Data for the 2018 solicitation cycle submitted through CEDEN for SWAMP RWB7 Monitoring.
SWAMP Data:
SWAMP
Water Quality Objective/Criterion:
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
The Statewide Sport Fish Water Quality Objective for the protection of the Commercial and Sport Fishing beneficial comes from the Statewide Water Quality Control Plan for Inland Surface Waters, Enclosed Bays, and Estuaries of California, and is 0.2 mg/Kg wet weight skinless fillet samples of trophic level 3, or trophic level 4 fish (whichever is highest in the water body) over a one year averaging period. Trophic levels of applicable fish are defined in, but not limited to those in Attachment C of the Final Regulatory Language document (Appendix A) of State Water Resources Control Board Resolution No. 2017-0027.
Line of Evidence (LOE) for Decision ID 170582, Mercury
Region 7
Wiest Lake
LOE ID:
133134
Pollutant:
Mercury
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:
1
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP Sportfish Contamination in Lakes and Resrv data for Wiest Lake to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the water quality standard for Mercury. This LOE contains data only for trophic level 4 fish. The concentration of Mercury in fish collected within the same calendar year, for the same trophic level were averaged into a single sample for comparison with the objective. A total of 5 fish were aggregated into 1 annual averages, which consisted of 1 fish species (1 composite(s) of Black Crappie each composed of 5 fish per composite). This LOE does not contain data from fish whos average length was outside of the legal size limits as described by the California Department of Fish and Wildlife Fishing Regulations.
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
The Statewide Sport Fish Water Quality Objective for the protection of
DECISION ID
169597
Region 7
Wiest Lake
Pollutant:
Specific Conductivity
Final Listing Decision:
Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:
New Decision
Revision Status
Revised
Impairment from Pollutant or Pollution:
Pollutant
Regional Board Conclusion:
Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available
Regional Board Decision Recommendation:
After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
State Board Review of Regional Board Conclusion and Recommendation:
State Board Decision Recommendation:
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 it cannot be determined if applicable water quality standards are not being exceeded.
Listing Extent:
Line of Evidence (LOE) for Decision ID 169597, Specific Conductivity
Region 7
Wiest Lake
LOE ID:
336287
Pollutant:
Specific Conductivity
LOE Subgroup:
Pollutant-Water
Matrix:
Water
Fraction:
None
Beneficial Use:
Municipal & Domestic Supply
Number of Samples:
3
Number of Exceedances:
3
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP RWB7 Monitoring data for Wiest Lake to determine beneficial use support and results are as follows: 3 of 3 samples exceeded the water quality threshold for SpecificConductivity.
No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. (Water Quality Control Plan, Colorado River Basin).
the Commercial and Sport Fishing beneficial comes from the Statewide Water Quality Control Plan for Inland Surface Waters, Enclosed Bays, and Estuaries of California, and is 0.2 mg/Kg wet weight skinless fillet samples of trophic level 3, or trophic level 4 fish (whichever is highest in the water body) over a one year averaging period. Trophic levels of applicable fish are defined in, but not limited to those in Attachment C of the Final Regulatory Language document (Appendix A) of State Water Resources Control Board Resolution No. 2017-0027.
Line of Evidence (LOE) for Decision ID 170582, Mercury
Region 7
Wiest Lake
LOE ID:
132965
Pollutant:
Mercury
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Wildlife Habitat
Number of Samples:
1
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP RWB7 Monitoring data for Wiest Lake to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the water quality standard for Mercury. This LOE contains data only for trophic level 4 fish. The concentration of Mercury in fish collected within the same calendar year, for the same trophic level were averaged into a single sample for comparison with the objective. A total of 26 fish were aggregated into 1 annual averages, which consisted of 5 fish species (1 composite(s) of Channel Catfish each composed of 4 fish per composite, 1 composite(s) of Channel Catfish each composed of 5 fish per composite, 8 composite(s) of Largemouth Bass each composed of 1 fish per composite, 1 composite(s) of Black Crappie each composed of 4 fish per composite, 1 composite(s) of Black Crappie each composed of 5 fish per composite). This LOE does not contain data from fish whos average length was outside of the legal size limits as described by the California Department of Fish and Wildlife Fishing Regulations.
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
The Statewide Sport Fish Water Quality Objective for the protection of Wildlife Habitat comes from the Statewide Water Quality Control Plan for Inland Surface Waters, Enclosed Bays, and Estuaries of California, and is 0.2 mg/Kg wet weight skinless fillet samples of trophic level 3, or trophic level 4 fish (whichever is highest in the water body) over a one year averaging period. If trophic level 3 fish are used in the assessment then the Prey Fish Water Quality Objective must also be used to determine that the Sport Fish Objective is being met. Trophic levels of applicable fish are defined in, but not limited to those in Attachment C of the Final Regulatory Language document (Appendix A) of State Water Resources Control Board Resolution No. 2017-0027.
Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available
Regional Board Decision Recommendation:
After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
State Board Review of Regional Board Conclusion and Recommendation:
State Board Decision Recommendation:
After review of 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 it cannot be determined if applicable water quality standards are not being exceeded.
Listing Extent:
Line of Evidence (LOE) for Decision ID 158768, Temperature, water
Region 7
Wiest Lake
LOE ID:
336332
Pollutant:
Temperature, water
LOE Subgroup:
Pollutant-Water
Matrix:
Water
Fraction:
None
Beneficial Use:
Cold Freshwater Habitat
Number of Samples:
3
Number of Exceedances:
2
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP RWB7 Monitoring data for Wiest Lake to determine beneficial use support and results are as follows: 2 of 3 samples exceeded the water quality threshold for Temperature.
Natural receiving water temperature of intrastate waters shall not be altered unless it can be demonstrated to the satisfaction of the Regional Board that such alteration in temperature does not adversely affect beneficial uses (Water Quality Control Plan, Colorado River Basin).
Inland Fishes of California (Moyle 1976) states that for rainbow trout the optimum range for growth and completion of most life stages is 13-21 degrees C (page 129).
Line of Evidence (LOE) for Decision ID 170582, Mercury
Region 7
Wiest Lake
LOE ID:
133068
Pollutant:
Mercury
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Wildlife Habitat
Number of Samples:
1
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP RWB7 Monitoring data for Wiest Lake to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the water quality standard for Mercury. This LOE contains data only for trophic level 3 fish. The concentration of Mercury in fish collected within the same calendar year, for the same trophic level were averaged into a single sample for comparison with the objective. A total of 3 fish were aggregated into 1 annual averages, which consisted of 1 fish species (1 composite(s) of Redear Sunfish each composed of 3 fish per composite).
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
The Statewide Sport Fish Water Quality Objective for the protection of Wildlife Habitat comes from the Statewide Water Quality Control Plan for Inland Surface Waters, Enclosed Bays, and Estuaries of California, and is 0.2 mg/Kg wet weight skinless fillet samples of trophic level 3, or trophic level 4 fish (whichever is highest in the water body) over a one year averaging period. If trophic level 3 fish are used in the assessment then the Prey Fish Water Quality Objective must also be used to determine that the Sport Fish Objective is being met. Trophic levels of applicable fish are defined in, but not limited to those in Attachment C of the Final Regulatory Language document (Appendix A) of State Water Resources Control Board Resolution No. 2017-0027.
Line of Evidence (LOE) for Decision ID 170582, Mercury
Region 7
Wiest Lake
LOE ID:
133212
Pollutant:
Mercury
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Wildlife Habitat
Number of Samples:
1
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP RWB7 Monitoring data for Wiest Lake to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the water quality standard for Mercury. This LOE contains data only for trophic level 3 fish. The concentration of Mercury in fish collected within the same calendar year, for the same trophic level were averaged into a single sample for comparison with the objective. A total of 3 fish were aggregated into 1 annual averages, which consisted of 1 fish species (1 composite(s) of Redear Sunfish each composed of 3 fish per composite). This LOE does not contain data from fish whos average length was outside of the legal size limits as described by the California Department of Fish and Wildlife Fishing Regulations.
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
The Statewide Sport Fish Water Quality Objective for the protection of Wildlife Habitat comes from the Statewide Water Quality Control Plan for Inland Surface Waters, Enclosed Bays, and Estuaries of California, and is 0.2 mg/Kg wet weight skinless fillet samples of trophic level 3, or trophic level 4 fish (whichever is highest in the water body) over a one year averaging period. If trophic level 3 fish are used in the assessment then the Prey Fish Water Quality Objective must also be used to determine that the Sport Fish Objective is being met. Trophic levels of applicable fish are defined in, but not limited to those in Attachment C of the Final Regulatory Language document (Appendix A) of State Water Resources Control Board Resolution No. 2017-0027.
Line of Evidence (LOE) for Decision ID 170582, Mercury
Region 7
Wiest Lake
LOE ID:
133295
Pollutant:
Mercury
LOE Subgroup:
Pollutant-Tissue
DECISION ID
164483
Region 7
Wiest Lake
Pollutant:
Toxaphene
Final Listing Decision:
Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:
Do Not List on 303(d) list (TMDL required list)(2018)
Revision Status
Revised
Impairment from Pollutant or Pollution:
Pollutant
Regional Board Conclusion:
Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available
Regional Board Decision Recommendation:
After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
State Board Review of Regional Board Conclusion and Recommendation:
State Board Decision Recommendation:
After review of 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 it cannot be determined if applicable water quality standards are not being exceeded.
Listing Extent:
Line of Evidence (LOE) for Decision ID 164483, Toxaphene
Region 7
Wiest Lake
LOE ID:
46242
Pollutant:
Toxaphene
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:
0
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 0 samples exceed the criterion for Toxaphene. Six composites were generated from two species: black crappie and channel catfish. Composites comprised of 3 - 4 fish for black crappie and 2 -3 fish for channel catfish. Six samples were not used in the assessment because the laboratory data reporting limit(s) was above the objective and therefore the results could not be quantified with the level of certainty required by the Listing Policy.
No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (Water Quality Control Plan, Colorado River Basin).
Water Board staff assessed SWAMP RWB7 Monitoring data for Wiest Lake to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the water quality standard for Mercury. This LOE contains data only for trophic level 4 fish. The concentration of Mercury in fish collected within the same calendar year, for the same trophic level were averaged into a single sample for comparison with the objective. A total of 16 fish were aggregated into 1 annual averages, which consisted of 3 fish species (2 composite(s) of Channel Catfish each composed of 3 fish per composite, 1 composite(s) of Black Crappie each composed of 4 fish per composite, 2 composite(s) of Black Crappie each composed of 3 fish per composite). This LOE does not contain data from fish whos average length was outside of the legal size limits as described by the California Department of Fish and Wildlife Fishing Regulations.
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
The Statewide Sport Fish Water Quality Objective for the protection of Wildlife Habitat comes from the Statewide Water Quality Control Plan for Inland Surface Waters, Enclosed Bays, and Estuaries of California, and is 0.2 mg/Kg wet weight skinless fillet samples of trophic level 3, or trophic level 4 fish (whichever is highest in the water body) over a one year averaging period. If trophic level 3 fish are used in the assessment then the Prey Fish Water Quality Objective must also be used to determine that the Sport Fish Objective is being met. Trophic levels of applicable fish are defined in, but not limited to those in Attachment C of the Final Regulatory Language document (Appendix A) of State Water Resources Control Board Resolution No. 2017-0027.
Line of Evidence (LOE) for Decision ID 170582, Mercury
Region 7
Wiest Lake
LOE ID:
133271
Pollutant:
Mercury
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Wildlife Habitat
Number of Samples:
1
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP Sportfish Contamination in Lakes and Resrv data for Wiest Lake to determine beneficiallign="left" valign="top" width="67%">The modified OEHHA Fish Contaminant Goal for toxaphene in fish tissue is 4.3 ppb. This screening level assumes an average body weight of 70 kg and a consumption rate of 32 g/day for a 30 year exposure over a 70-year lifetime. This constituent is a carcinogen therefore the risk level is set to one in a million. A cooking reduction factor of 1 is applied for skin-off fillets.
Line of Evidence (LOE) for Decision ID 164483, Toxaphene
Region 7
Wiest Lake
LOE ID:
46255
Pollutant:
Toxaphene
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Cold Freshwater Habitat
Number of Samples:
2
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for Toxaphene. Six composites were generated from two species: black crappie and channel catfish. Composites comprised of 3 - 4 fish for black crappie and 2 -3 fish for channel catfish. Composites collected at the same time on the same day for the same species were averaged in accordance with the listing policy.
No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (Water Quality Control Plan, Colorado River Basin).
National Academy of Science guidelines (NAS 1972) establish a maximum Toxaphene concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
The Statewide Sport Fish Water Quality Objective for the protection of Wildlife Habitat comes from the Statewide Water Quality Control Plan for Inland Surface Waters, Enclosed Bays, and Estuaries of California, and is 0.2 mg/Kg wet weight skinless fillet samples of trophic level 3, or trophic level 4 fish (whichever is highest in the water body) over a one year averaging period. If trophic level 3 fish are used in the assessment then the Prey Fish Water Quality Objective must also be used to determine that the Sport Fish Objective is being met. Trophic levels of applicable fish are defined in, but not limited to those in Attachment C of the Final Regulatory Language document (Appendix A) of State Water Resources Control Board Resolution No. 2017-0027.
Line of Evidence (LOE) for Decision ID 170582, Mercury
Region 7
Wiest Lake
LOE ID:
133337
Pollutant:
Mercury
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Wildlife Habitat
Number of Samples:
1
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP RWB7 Monitoring data for Wiest Lake to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the water quality standard for Mercury. This LOE contains data only for trophic level 4 fish. The concentration of Mercury in fish collected within the same calendar year, for the same trophic level were averaged into a single sample for comparison with the objective. A total of 31 fish were aggregated into 1 annual averages, which consisted of 6 fish species (1 composite(s) of Channel Catfish each composed of 4 fish per composite, 1 composite(s) of Channel Catfish each composed of 5 fish per composite, 11 composite(s) of Largemouth Bass each composed of 1 fish per composite, 2 composite(s) of Striped Bass each composed of 1 fish per composite, 1 composite(s) of Black Crappie each composed of 4 fish per composite, 1 composite(s) of Black Crappie each composed of 5 fish per composite).
Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for Toxaphene. Six composites were generated from two species: black crappie and channel catfish. Composites comprised of 3 - 4 fish for black crappie and 2 -3 fish for channel catfish. Composites collected at the same time on the same day for the same species were averaged in accordance with the listing policy.
No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (Water Quality Control Plan, Colorado River Basin).
National Academy of Science guidelines (NAS 1972) establish a maximum Toxaphene concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Line of Evidence (LOE) for Decision ID 164483, Toxaphene
Region 7
Wiest Lake
LOE ID:
5559
Pollutant:
Toxaphene
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Total
Beneficial Use:
Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:
1
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Two fish fillet samples were taken at 1 location in lake. One fish fillet sample result could not be used in this assessment because the sample results were non-detect and the detection limit was above the criteria concentration. The 1 fish fillet sample that was acceptable was generally collected in 12/1999. This sample did not exceeded the OEHHA Screening Value. (TSMP, 2007).
Basin Plan: No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (CRBRWQCB, 2006).
Samples were collected from the interior of Wiest Lake.
Temporal Representation:
Two largemouth bass fillet composite samples were collected in 10/1989 and 12/1999.
Environmental Conditions:
QAPP Information:
The field procedures are described in TSMP Data Reports and associated Appendices. CDFG's Laboratory applies Quality Assurance Program Plan procedures for laboratory Quality Assurance and Quality Control, as described in Rasmussen (1993).
Line of Evidence (LOE) for Decision ID 164483, Toxaphene
Region 7
Wiest Lake
LOE ID:
5657
Pollutant:
Toxaphene
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Total
Beneficial Use:
Warm Freshwater Habitat
Number of Samples:
2
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Two fish fillet samples were taken at 1 location in the lake. The samples were generally collected in 10/1989 and 12/1999. Of these two samples, neither exceeded the NAS tissue guideline (TSMP, 2007).
Basin Plan: No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (CRBRWQCB, 2006).
Samples were collected from the interior of Wiest Lake.
Temporal Representation:
Two largemouth bass fillet composite samples were collected in 10/1989 and 12/1999.
Environmental Conditions:
QAPP Information:
The field procedures are described in TSMP Data Reports and associated Appendices. CDFG's Laboratory applies Quality Assurance Program Plan procedures for laboratory Quality Assurance and Quality Control, as described in Rasmussen (1993).
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
The Statewide Sport Fish Water Quality Objective for the protection of Wildlife Habitat comes from the Statewide Water Quality Control Plan for Inland Surface Waters, Enclosed Bays, and Estuaries of California, and is 0.2 mg/Kg wet weight skinless fillet samples of trophic level 3, or trophic level 4 fish (whichever is highest in the water body) over a one year averaging period. If trophic level 3 fish are used in the assessment then the Prey Fish Water Quality Objective must also be used to determine that the Sport Fish Objective is being met. Trophic levels of applicable fish are defined in, but not limited to those in Attachment C of the Final Regulatory Language document (Appendix A) of State Water Resources Control Board Resolution No. 2017-0027.
Line of Evidence (LOE) for Decision ID 170582, Mercury
Region 7
Wiest Lake
LOE ID:
133146
Pollutant:
Mercury
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Wildlife Habitat
Number of Samples:
1
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP Sportfish Contamination in Lakes and Resrv data for Wiest Lake to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the water quality standard for Mercury. This LOE contains data only for trophic level 4 fish. The concentration of Mercury in fish collected within the same calendar year, for the same trophic level were averaged into a single sample for comparison with the objective. A total of 5 fish were aggregated into 1 annual averages, which consisted of 1 fish species (1 composite(s) of Black Crappie each composed of 5 fish per composite).
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
The Statewide Sport Fish Water Quality Objective for the protection of Wildlife Habitat comes from the Statewide Water Quality Control Plan for Inland Surface Waters, Enclosed Bays, and Estuaries of California, and is 0.2 mg/Kg wet weight skinless fillet samples of trophic level 3, or trophic level 4 fish (whichever is highes
DECISION ID
158769
Region 7
Wiest Lake
Pollutant:
Turbidity
Final Listing Decision:
Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:
New Decision
Revision Status
Revised
Impairment from Pollutant or Pollution:
Pollutant
Regional Board Conclusion:
Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available
Regional Board Decision Recommendation:
After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
State Board Review of Regional Board Conclusion and Recommendation:
State Board Decision Recommendation:
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 it cannot be determined if applicable water quality standards are not being exceeded.
Listing Extent:
Line of Evidence (LOE) for Decision ID 158769, Turbidity
Region 7
Wiest Lake
LOE ID:
336397
Pollutant:
Turbidity
LOE Subgroup:
Pollutant-Water
Matrix:
Water
Fraction:
Total
Beneficial Use:
Municipal & Domestic Supply
Number of Samples:
3
Number of Exceedances:
3
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP RWB7 Monitoring data for Wiest Lake to determine beneficial use support and results are as follows: 3 of 3 samples exceeded the water quality threshold for Turbidity.
California Maximum Contaminant Levels (MCLs) apply to ambient surface waters under the Basin Plan's 'Chemical Constituents' objective. The Secondary MCL for turbidity is 5 NTU. Calculation of a numeric objective for other beneficial uses requires comparison with upstream or other background data which may not be available as part of the data used for water quality assessment.
t in the water body) over a one year averaging period. If trophic level 3 fish are used in the assessment then the Prey Fish Water Quality Objective must also be used to determine that the Sport Fish Objective is being met. Trophic levels of applicable fish are defined in, but not limited to those in Attachment C of the Final Regulatory Language document (Appendix A) of State Water Resources Control Board Resolution No. 2017-0027.
Line of Evidence (LOE) for Decision ID 170582, Mercury
Region 7
Wiest Lake
LOE ID:
133001
Pollutant:
Mercury
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Wildlife Habitat
Number of Samples:
1
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP RWB7 Monitoring data for Wiest Lake to determine beneficial use support and the results are as follows: 0 of the 1 samples exceeded the water quality standard for Mercury. This LOE contains data only for trophic level 4 fish. The concentration of Mercury in fish collected within the same calendar year, for the same trophic level were averaged into a single sample for comparison with the objective. A total of 16 fish were aggregated into 1 annual averages, which consisted of 3 fish species (2 composite(s) of Channel Catfish each composed of 3 fish per composite, 1 composite(s) of Black Crappie each composed of 4 fish per composite, 2 composite(s) of Black Crappie each composed of 3 fish per composite).
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
The Statewide Sport Fish Water Quality Objective for the protection of Wildlife Habitat comes from the Statewide Water Quality Control Plan for Inland Surface Waters, Enclosed Bays, and Estuaries of California, and is 0.2 mg/Kg wet weight skinless fillet samples of trophic level 3, or trophic level 4 fish (whichever is highest in the water body) over a one year averaging period. If trophic level 3 fish are used in the assessment then the Prey Fish Water Quality Objective must also be used to determine that the Sport Fish Objective is being met. Trophic levels of applicable fish are defined in, but not limited to those in Attachment C of the Final Regulatory Language document (Appendix A) of State Water Resources Control Board Resolution No. 2017-0027.
Do Not List on 303(d) list (TMDL required list)(2018)
Revision Status
Revised
Impairment from Pollutant or Pollution:
Pollutant
Regional Board Conclusion:
Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available
Regional Board Decision Recommendation:
After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
State Board Review of Regional Board Conclusion and Recommendation:
State Board Decision Recommendation:
After review of 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 it cannot be determined if applicable water quality standards are not being exceeded.
Listing Extent:
Line of Evidence (LOE) for Decision ID 164473, alpha-Endosulfan (Endosulfan 1)
Region 7
Wiest Lake
LOE ID:
46302
Pollutant:
alpha-Endosulfan (Endosulfan 1)
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:
1
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Endosulfan I. One composite (3 fish per composite) was generated from one species: channel catfish. Details of the compositing protocol can be found in the March 2009 report entitled: "Contaminants in Fish from California Lakes and Reservoirs: Technical Report on Year One of a Two-Year Screening Study" (SWAMP, 2009).
Do Not List on 303(d) list (TMDL required list)(2018)
Revision Status
Revised
Impairment from Pollutant or Pollution:
Pollutant
Regional Board Conclusion:
Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available
Regional Board Decision Recommendation:
After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
State Board Review of Regional Board Conclusion and Recommendation:
State Board Decision Recommendation:
After review of 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 it cannot be determined if applicable water quality standards are not being exceeded.
Listing Extent:
Line of Evidence (LOE) for Decision ID 164481, Mirex
Region 7
Wiest Lake
LOE ID:
126450
Pollutant:
Mirex
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:
0
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Waterboard staff assessed RWB7 TMDL data for Wiest Lake to determine beneficial use support and the results are as follows: Zero of Zero samples exceeded the water quality standard for Mirex. Although data was collected for 4 fish species (1 composite(s) of Black Crappie each composed of 5 fish per composite, 1 composite(s) of Common Carp each composed of 5 fish per composite, 1 composite(s) of Largemouth Bass each composed of 1 fish per composite, 1 composite(s) of Largemouth Bass each composed of 5 fish per composite), all 4 sample(s) had to be thrown out due to quantitation issues.
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
The modified OEHHA Fish Contaminant Goal for mirex in fish tissue is 0.28 ppb. This screening level assumes an average body weight of 70 kg and a consumption rate of 32 g/day. This constituent is a carcinogen therefore the risk level is set to one in a million. A cooking reduction factor of 1 is applied for skin-off fillets. (Klasing, S., and R. Brodberg, 2008; OEHHA, 1992)
Line of Evidence (LOE) for Decision ID 164481, Mirex
Region 7
Wiest Lake
LOE ID:
46318
Pollutant:
Mirex
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:
0
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 0 samples exceed the criterion for Mirex. One composite (3 fish per composite) was generated from one species: channel catfish. Details of the compositing protocol can be found in the March 2009 report entitled: "Contaminants in Fish from California Lakes and Reservoirs: Technical Report on Year One of a Two-Year Screening Study" (SWAMP, 2009). One sample was not used in the assessment because the laboratory data reporting limit(s) was above the objective and therefore the results could not be quantified with the level of certainty required by the Listing Policy.
No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (Water Quality Control Plan, Colorado River Basin).
The modified OEHHA Fish Contaminant Goal for mirex in fish tissue is 0.28 ppOne of a Two-Year Screening Survey. A Report of the Surface Water Ambient Monitoring Program (SWAMP). California State Water Resources Control Board, Sacramento, CA
SWAMP Data:
SWAMP
Water Quality Objective/Criterion:
No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (Water Quality Control Plan, Colorado River Basin).
The modified OEHHA Fish Contaminant Goal for endosulfan (l and ll) in fish tissue is 13,000 ppb. This screening level assumes an average body weight of 70 kg and a consumption rate of 32 g/day. A cooking reduction factor of 1 is applied for skin-off fillets.
Data for this line of evidence for Wiest Lake was collected at 1 monitoring site [ Wiest Lake_BOG - 723PWT019]. Samples were collected from 1 location. Individual sample locations consisted of an area within a given waterbody from which fish tissue samples were collected. The number of sample locations per waterbody was based on the overall size of the waterbody (SWAMP, 2010). Specifics of individual sampling locations can be found in the supplemental report entitled "Cruise Report for the Surface Waters Ambient Monitoring Program (SWAMP) Bioaccumulation Screening Study in California Lakes and Reservoirs, Sampling Dates: June 2007- March 2008" (SWAMP, 2008).
Temporal Representation:
Data was collected on a single day 11/1/2007.
Environmental Conditions:
Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:
Samples were collected, processed, and analyzed in accordance with the methods described in Quality Assurance Project Plan "Screening Study of Bioaccumulation in California Lakes and Reservoirs." (SWAMP, 2002).
Line of Evidence (LOE) for Decision ID 164473, alpha-Endosulfan (Endosulfan 1)
Region 7
Wiest Lake
LOE ID:
46303
Pollutant:
alpha-Endosulfan (Endosulfan 1)
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Cold Freshwater Habitat
Number of Samples:
1
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Endosulfan I. One composite (3 fish per composite) was generated from one species: channel catfish. Details of the compositing protocol can be found in the March 2009 report entitled: "Contaminants in Fish from California Lakes and Reservoirs: Technical Report on Year One of a Two-Year Screening Study" (SWAMP, 2009).
No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (Water Quality Control Plan, Colorado River Basin).
National Academy of Science guidelines (NAS 1972) establish a maximum total Endosulfan concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Data for this line of evidence for Wiest Lake was collected at 1 monitoring site [ Wiest Lake_BOG - 723PWT019]. Samples were collected from 1 location. Individual sample locations consisted of an area within a given waterbody from which fish tissue samples were collected. The number of sample locations per waterbody was based on the overall size of the waterbody (SWAMP, 2010). Specifics of individual sampling locations can be found in the supplemental report entitled "Cruise Report for the Surface Waters Ambient Monitoring Program (SWAMP) Bioaccumulation Screening Study in California Lakes and Reservoirs, Sampling Dates: June 2007- March 2008" (SWAMP, 2008).
Temporal Representation:
Data was collected on a single day 11/1/2007.
Environmental Conditions:
Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:
Samples were collected, processed, and analyzed in accordance with the methods described in Quality Assurance Project Plan "Screening Study of Bioaccumulation in California Lakes and Reservoirs." (SWAMP, 2002).
Line of Evidence (LOE) for Decision ID 164473, alpha-Endosulfan (Endosulfan 1)
Region 7
Wiest Lake
LOE ID:
46304
Pollutant:
alpha-Endosulfan (Endosulfan 1)
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Warm Freshwater Habitat
Number of Samples:
1
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Endosulfan I. One composite (3 fish per composite) was generated from one species: channel catfish. Details of the compositing protocol can be found in the March 2009 report entitled: "Contaminants in Fish from California Lakes and Reservoirs: Technical Report on Year One of a Two-Year Screening Study" (SWAMP, 2009).
No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (Water Quality Control Plan, Colorado River Basin).
National Academy of Science guidelines (NAS 1972) establish a maximum total Endosulfan concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Data for this line of evidence for Wiest Lake was collected at 1 monitoring site [ Wiest Lake_BOG - 723PWT019]. Samples were collected from 1 location. Individual sample locations consisted of an area within a given waterbody from which fish tissue samples were collected. The number of sample locations per waterbody was based on the overall size of the waterbody (SWAMP, 2010). Specifics of individual sampling locations can be found in the supplemental report entitled "Cruise Report for the Surface Waters Ambient Monitoring Program (SWAMP) Bioaccumulation Screening Study in California Lakes and Reservoirs, Sampling Dates: June 2007- March 2008" (SWAMP, 2008).
Temporal Representation:
Data was collected on a single day 11/1/2007.
Environmental Conditions:
Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:
Samples were collected, processed, and analyzed in accordance with the methods described in Quality Assurance Project Plan "Screening Study of Bioaccumulation in California Lakes and Reservoirs." (SWAMP, 2002).
b. This screening level assumes an average body weight of 70 kg and a consumption rate of 32 g/day. A cooking reduction factor of 1 is applied for skin-off fillets.
Data for this line of evidence for Wiest Lake was collected at 1 monitoring site [ Wiest Lake_BOG - 723PWT019]. Samples were collected from 1 location. Individual sample locations consisted of an area within a given waterbody from which fish tissue samples were collected. The number of sample locations per waterbody was based on the overall size of the waterbody (SWAMP, 2010). Specifics of individual sampling locations can be found in the supplemental report entitled "Cruise Report for the Surface Waters Ambient Monitoring Program (SWAMP) Bioaccumulation Screening Study in California Lakes and Reservoirs, Sampling Dates: June 2007- March 2008" (SWAMP, 2008).
Temporal Representation:
Data was collected on a single day 11/1/2007.
Environmental Conditions:
Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:
Samples were collected, processed, and analyzed in accordance with the methods described in Quality Assurance Project Plan "Screening Study of Bioaccumulation in California Lakes and Reservoirs." (SWAMP, 2002).
Line of Evidence (LOE) for Decision ID 164481, Mirex
Region 7
Wiest Lake
LOE ID:
126616
Pollutant:
Mirex
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:
0
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Waterboard staff assessed SWAMP RWB7 Monitoring data for Wiest Lake to determine beneficial use support and the results are as follows: Zero of Zero samples exceeded the water quality standard for Mirex. Although data was collected for 3 fish species (1 composite(s) of Channel Catfish each composed of 3 fish per composite, 1 composite(s) of Channel Catfish each composed of 9 fish per composite, 1 composite(s) of Striped Bass each composed of 3 fish per composite), all 3 sample(s) had to be thrown out due to quantitation issues.
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
The modified OEHHA Fish Contaminant Goal for mirex in fish tissue is 0.28 ppb. This screening level assumes an average body weight of 70 kg and a consumption rate of 32 g/day. This constituent is a carcinogen therefore the risk level is set to one in a million. A cooking reduction factor of 1 is applied for skin-off fillets. (Klasing, S., and R. Brodberg, 2008; OEHHA, 1992)
Line of Evidence (LOE) for Decision ID 164481, Mirex
Region 7
Wiest Lake
LOE ID:
46226
Pollutant:
Mirex
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:
0
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 0 samples exceed the criterion for Mirex. Six composites were generated from two species: black crappie and channel catfish. Composites comprised of 3 - 4 fish for black crappie and 2 -3 fish for channel catfish. Six samples were not used in the assessment because the laboratory data reporting limit(s) was above the objective and therefore the results could not be quantified with the level of certainty required by the Listing Policy.
No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (Water Quality Control Plan, Colorado River Basin).
The modified OEHHA Fish Contaminant Goal for mirex in fish tissue is 0.28 ppb. This screening level assumes an average body weight of 70 kg and a consumption rate of 32 g/day. A cooking reduction factor of 1 is applied for skin-off fillets.
Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available
Regional Board Decision Recommendation:
After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
State Board Review of Regional Board Conclusion and Recommendation:
State Board Decision Recommendation:
After review of 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 it cannot be determined if applicable water quality standards are not being exceeded.
Listing Extent:
Line of Evidence (LOE) for Decision ID 158766, pH
Region 7
Wiest Lake
LOE ID:
335938
Pollutant:
pH
LOE Subgroup:
Pollutant-Water
Matrix:
Water
Fraction:
None
Beneficial Use:
Cold Freshwater Habitat
Number of Samples:
3
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP RWB7 Monitoring data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for pH.
The Water Quality Control Plan for the Colorado River Basin Region's water quality objective for all surface waters states the following: Since the regional waters are somewhat alkaline, pH shall range from 6.0-9.0. Discharges shall not cause any changes in pH detrimental to beneficial water uses.
The samples were collected at 1 monitoring site: 723PWT019 (Wi
DECISION ID
158765
Region 7
Wiest Lake
Pollutant:
Oxygen, Dissolved
Final Listing Decision:
Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:
New Decision
Revision Status
Revised
Impairment from Pollutant or Pollution:
Pollutant
Regional Board Conclusion:
Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available
Regional Board Decision Recommendation:
After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
State Board Review of Regional Board Conclusion and Recommendation:
State Board Decision Recommendation:
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 it cannot be determined if applicable water quality standards are not being exceeded.
Listing Extent:
Line of Evidence (LOE) for Decision ID 158765, Oxygen, Dissolved
Region 7
Wiest Lake
LOE ID:
335729
Pollutant:
Oxygen, Dissolved
LOE Subgroup:
Pollutant-Water
Matrix:
Water
Fraction:
None
Beneficial Use:
Cold Freshwater Habitat
Number of Samples:
3
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP RWB7 Monitoring data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for Oxygen, Dissolved.
Water Quality Control Plan, Colorado River Basin, Cold Water Habitat Objective, Chapter III, states the following: The dissolved oxygen concentration for cold water habitats shall not be reduced below 8.0 mg/l at any time.
Line of Evidence (LOE) for Decision ID 158765, Oxygen, Dissolved
Region 7
Wiest Lake
LOE ID:
335698
Pollutant:
Oxygen, Dissolved
LOE Subgroup:
Pollutant-Water
Matrix:
Water
Fraction:
None
Beneficial Use:
Warm Freshwater Habitat
Number of Samples:
3
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP RWB7 Monitoring data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for Oxygen, Dissolved.
Water Quality Control Plan, Colorado River Basin, WARM Water Habitat Objective, Chapter III, states the following: The dissolved oxygen concentration for warm water habitats shall not be reduced below 5.0 mg/l at any time.
Water Board staff assessed SWAMP RWB7 Monitoring data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for pH.
The Water Quality Control Plan for the Colorado River Basin Region's water quality objective for all surface waters states the following: Since the regional waters are somewhat alkaline, pH shall range from 6.0-9.0. Discharges shall not cause any changes in pH detrimental to beneficial water uses.
Water Board staff assessed SWAMP RWB7 Monitoring data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for pH.
The Water Quality Control Plan for the Colorado River Basin Region's water quality objective for all surface waters states the following: Since the regional waters are somewhat alkaline, pH shall range from 6.0-9.0. Discharges shall not cause any changes in pH detrimental to beneficial water uses.
Water Board staff assessed SWAMP RWB7 Monitoring data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for pH.
The Water Quality Control Plan for the Colorado River Basin Region's water quality objective for all surface waters states the following: Since the regional waters are somewhat alkaline, pH shall range from 6.0-9.0. Discharges shall not cause any changes in pH detrimental to beneficial water uses.
Water Board staff assessed SWAMP RWB7 Monitoring data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for pH.
The Water Quality Control Plan for the Colorado River Basin Region's water quality objective for all surface waters states the following: Since the regional waters are somewhat alkaline, pH shall range from 6.0-9.0. Discharges shall not cause any changes in pH detrimental to beneficial water uses.
Do Not List on 303(d) list (TMDL required list)(2018)
Revision Status
Revised
Impairment from Pollutant or Pollution:
Pollutant
Regional Board Conclusion:
Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available
Regional Board Decision Recommendation:
After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
State Board Review of Regional Board Conclusion and Recommendation:
State Board Decision Recommendation:
After review of 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 it cannot be determined if applicable water quality standards are not being exceeded.
Listing Extent:
Line of Evidence (LOE) for Decision ID 158767, Selenium
Region 7
Wiest Lake
LOE ID:
46330
Pollutant:
Selenium
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:
1
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Selenium. One composite (3 fish per composite) was generated from one species: channel catfish. Details of the compositing protocol can be found in the March 2009 report entitled: "Contaminants in Fish from California Lakes and Reservoirs: Technical Report on Year One of a Two-Year Screening Study" (SWAMP, 2009).
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life (Water Quality Control Plan, Colorado River Basin).
The OEHHA Fish Contaminant Goal for selenium in fish tissue is 7.4 ppm. This screening level assumes an average body weight of 70 kg and a consumption rate of 32 g/day. A background dietary consumption rate of 0.114 mg/day is applied for this micronutrient.
Data for this line of evidence for Wiest Lake was collected at 1 monitoring site [ Wiest Lake_BOG - 723PWT019]. Samples were collected from 1 location. Individual sample locations consisted of an area within a given waterbody from which fish tissue samples were collected. The number of sample locations per waterbody was based on the overall size of the waterbody (SWAMP, 2010). Specifics of individual sampling locations can be found in the supplemental report entitled "Cruise Report for the Surface Waters Ambient Monitoring Program (SWAMP) Bioaccumulation Screening Study in California Lakes and Reservoirs, Sampling Dates: June 2007- March 2008" (SWAMP, 2008).
Temporal Representation:
Data was collected on a single day 11/1/2007.
Environmental Conditions:
Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:
Samples were collected, processed, and analyzed in accordance with the methods described in Quality Assurance Project Plan "Screening Study of Bioaccumulation in California Lakes and Reservoirs." (SWAMP, 2002).
Line of Evidence (LOE) for Decision ID 158767, Selenium
Region 7
Wiest Lake
LOE ID:
126513
Pollutant:
Selenium
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:
8
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP RWB7 Monitoring data for Wiest Lake to determine beneficial use support and the results are as follows 0 of the 8 samples exceeded the water quality standard for Selenium. Data were collected for 6 fish species (1 composite(s) of Black Crappie each composed of 4 fish per composite, 1 composite(s) of Black Crappie each composed of 5 fish per composite, 12 composite(s) of Channel Catfish each composed of 1 fish per composite, 12 composite(s) of Largemouth Bass each composed of 1 fish per composite, 1 composite(s) of Redear Sunfish each composed of 3 fish per composite, 2 composite(s) of Striped Bass each composed of 1 fish per composite).
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
The OEHHA Fish Contaminant Goal for selenium in fish tissue is 7.4 ppm. This screening level assumes an average body weight of 70 kg and a consumption rate of 32 g/day. A background dietary consumption rate of 0.114 mg/day is applied for this micronutrient. (Klasing, S., and R. Brodberg, 2008)
Line of Evidence (LOE) for Decision ID 158767, Selenium
Region 7
Wiest Lake
LOE ID:
46241
Pollutant:
Selenium
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:
2
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for Selenium. Six composites were generated from two species: black crappie and channel catfish. Composites comprised of 3 - 4 fish for black crappie and 2 -3 fish for channel catfish. Composites collected at the same time on the same day for the same species were averaged in accordance with the listing policy.
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life (Water Quality Control Plan, Colorado River Basin).
The OEHHA Fish Contaminant Goal for selenium in fish tissue is 7.4 ppm. This screening level assumes an average body weight of 70 kg and a consumption rate of 32 g/day. A background dietary consumption rate of 0.114 mg/day is applied for this micronutrient.
Line of Evidence (LOE) for Decision ID 158767, Selenium
Region 7
Wiest Lake
LOE ID:
5445
Pollutant:
Selenium
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Total
Beneficial Use:
Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:
2
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Two fish fillet samples were taken at 1 location in lake. The sample were generally collected in 10/1998 and 12/1999. Of these total samples, none exceeded the OEHHA Fish Contaminant Goal (TSMP, 2007).
Basin Plan: No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (CRBRWQCB, 2006).
Office of Environmental Health Hazard Assessment (OEHHA) Fish Contaminant Goal of 7400 ug/kg to protect human health when consuming fish (OEHHA, 2008).
Samples were collected from the interior of Wiest Lake.
Temporal Representation:
Two largemouth bass fillet composite samples were collected in 10/1989 and 12/1999.
Environmental Conditions:
QAPP Information:
The field procedures are described in TSMP Data Reports and associated Appendices. CDFG's Laboratory applies a Quality Assurance Program Plan procedures for laboratory Quality Assurance and Quality Control, as described in Rasmussen (1993).
Line of Evidence (LOE) for Decision ID 158767, Selenium
Region 7
Wiest Lake
LOE ID:
334398
Pollutant:
Selenium
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:
2
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP Sportfish Contamination in Lakes and Resrv data for Wiest Lake to determine beneficial use support and the results are as follows: 0 of 2 samples exceeded the water quality threshold for Selenium. Monitors collected 2 composites: 1 composite of Bluegill composed of 10 fish and 1 composite of Largemouth Bass composed of 10 fish. Because no composites were collected within the same averaging period, these composites represent 2 independent samples.
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in human, plant, animal, or indigenous aquatic life. (Water Quality Control Plan for the Colorado River Basin Region)
The OEHHA Fish Contaminant Goal for selenium in fish tissue is 7.4 ppm. This screening level assumes an average body weight of 70 kg and a consumption rate of 32 g/day. A background dietary consumption rate of 0.114 mg/day is applied for this micronutrient. (Klasing, S., and R. Brodberg, 2008)
Data were collected from 1 station(s). Station Code(s): 723PWT019 (Wiest Lake_BOG).
Temporal Representation:
Data for this line of evidence were collected between 2019-06-03 and 2019-06-03. When composited fish were collected over multiple days, the first day of fish collection was used as the sample date in the LOE, both for LOE writing, and for averaging period purposes.
Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available
Regional Board Decision Recommendation:
After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
State Board Review of Regional Board Conclusion and Recommendation:
State Board Decision Recommendation:
After review of 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 it cannot be determined if applicable water quality standards are not being exceeded.
Listing Extent:
Line of Evidence (LOE) for Decision ID 169597, Specific Conductivity
Region 7
Wiest Lake
LOE ID:
336287
Pollutant:
Specific Conductivity
LOE Subgroup:
Pollutant-Water
Matrix:
Water
Fraction:
None
Beneficial Use:
Municipal & Domestic Supply
Number of Samples:
3
Number of Exceedances:
3
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP RWB7 Monitoring data for Wiest Lake to determine beneficial use support and results are as follows: 3 of 3 samples exceeded the water quality threshold for SpecificConductivity.
No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. (Water Quality Control Plan, Colorado River Basin).
Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available
Regional Board Decision Recommendation:
After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
State Board Review of Regional Board Conclusion and Recommendation:
State Board Decision Recommendation:
After review of 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 it cannot be determined if applicable water quality standards are not being exceeded.
Listing Extent:
Line of Evidence (LOE) for Decision ID 158768, Temperature, water
Region 7
Wiest Lake
LOE ID:
336332
Pollutant:
Temperature, water
LOE Subgroup:
Pollutant-Water
Matrix:
Water
Fraction:
None
Beneficial Use:
Cold Freshwater Habitat
Number of Samples:
3
Number of Exceedances:
2
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP RWB7 Monitoring data for Wiest Lake to determine beneficial use support and results are as follows: 2 of 3 samples exceeded the water quality threshold for Temperature.
Natural receiving water temperature of intrastate waters shall not be altered unless it can be demonstrated to the satisfaction of the Regional Board that such alteration in temperature does not adversely affect beneficial uses (Water Quality Control Plan, Colorado River Basin).
Inland Fishes of California (Moyle 1976) states that for rainbow trout the optimum range for growth and completion of most life stages is 13-21 degrees C (page 129).
Do Not List on 303(d) list (TMDL required list)(2018)
Revision Status
Revised
Impairment from Pollutant or Pollution:
Pollutant
Regional Board Conclusion:
Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available
Regional Board Decision Recommendation:
After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
State Board Review of Regional Board Conclusion and Recommendation:
State Board Decision Recommendation:
After review of 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 it cannot be determined if applicable water quality standards are not being exceeded.
Listing Extent:
Line of Evidence (LOE) for Decision ID 164483, Toxaphene
Region 7
Wiest Lake
LOE ID:
46242
Pollutant:
Toxaphene
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:
0
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 0 samples exceed the criterion for Toxaphene. Six composites were generated from two species: black crappie and channel catfish. Composites comprised of 3 - 4 fish for black crappie and 2 -3 fish for channel catfish. Six samples were not used in the assessment because the laboratory data reporting limit(s) was above the objective and therefore the results could not be quantified with the level of certainty required by the Listing Policy.
No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (Water Quality Control Plan, Colorado River Basin).
The modified OEHHA Fish Contaminant Goal for toxaphene in fish tissue is 4.3 ppb. This screening level assumes an average body weight of 70 kg and a consumption rate of 32 g/day for a 30 year exposure over a 70-year lifetime. This constituent is a carcinogen therefore the risk level is set to one in a million. A cooking reduction factor of 1 is applied for skin-off fillets.
Line of Evidence (LOE) for Decision ID 164483, Toxaphene
Region 7
Wiest Lake
LOE ID:
46255
Pollutant:
Toxaphene
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Cold Freshwater Habitat
Number of Samples:
2
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for Toxaphene. Six composites were generated from two species: black crappie and channel catfish. Composites comprised of 3 - 4 fish for black crappie and 2 -3 fish for channel catfish. Composites collected at the same time on the same day for the same species were averaged in accordance with the listing policy.
No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (Water Quality Control Plan, Colorado River Basin).
National Academy of Science guidelines (NAS 1972) establish a maximum Toxaphene concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Line of Evidence (LOE) for Decision ID 164483, Toxaphene
Region 7
Wiest Lake
LOE ID:
46256
Pollutant:
Toxaphene
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Warm Freshwater Habitat
Number of Samples:
2
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for Toxaphene. Six composites were generated from two species: black crappie and channel catfish. Composites comprised of 3 - 4 fish for black crappie and 2 -3 fish for channel catfish. Composites collected at the same time on the same day for the same species were averaged in accordance with the listing policy.
No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (Water Quality Control Plan, Colorado River Basin).
National Academy of Science guidelines (NAS 1972) establish a maximum Toxaphene concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Line of Evidence (LOE) for Decision ID 164483, Toxaphene
Region 7
Wiest Lake
LOE ID:
5559
Pollutant:
Toxaphene
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Total
Beneficial Use:
Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:
1
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Two fish fillet samples were taken at 1 location in lake. One fish fillet sample result could not be used in this assessment because the sample results were non-detect and the detection limit was above the criteria concentration. The 1 fish fillet sample that was acceptable was generally collected in 12/1999. This sample did not exceeded the OEHHA Screening Value. (TSMP, 2007).
Basin Plan: No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (CRBRWQCB, 2006).
Samples were collected from the interior of Wiest Lake.
Temporal Representation:
Two largemouth bass fillet composite samples were collected in 10/1989 and 12/1999.
Environmental Conditions:
QAPP Information:
The field procedures are described in TSMP Data Reports and associated Appendices. CDFG's Laboratory applies Quality Assurance Program Plan procedures for laboratory Quality Assurance and Quality Control, as described in Rasmussen (1993).
Line of Evidence (LOE) for Decision ID 164483, Toxaphene
Region 7
Wiest Lake
LOE ID:
5657
Pollutant:
Toxaphene
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Total
Beneficial Use:
Warm Freshwater Habitat
Number of Samples:
2
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Two fish fillet samples were taken at 1 location in the lake. The samples were generally collected in 10/1989 and 12/1999. Of these two samples, neither exceeded the NAS tissue guideline (TSMP, 2007).
Basin Plan: No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (CRBRWQCB, 2006).
Samples were collected from the interior of Wiest Lake.
Temporal Representation:
Two largemouth bass fillet composite samples were collected in 10/1989 and 12/1999.
Environmental Conditions:
QAPP Information:
The field procedures are described in TSMP Data Reports and associated Appendices. CDFG's Laboratory applies Quality Assurance Program Plan procedures for laboratory Quality Assurance and Quality Control, as described in Rasmussen (1993).
Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available
Regional Board Decision Recommendation:
After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
State Board Review of Regional Board Conclusion and Recommendation:
State Board Decision Recommendation:
After review of 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 it cannot be determined if applicable water quality standards are not being exceeded.
Listing Extent:
Line of Evidence (LOE) for Decision ID 158769, Turbidity
Region 7
Wiest Lake
LOE ID:
336397
Pollutant:
Turbidity
LOE Subgroup:
Pollutant-Water
Matrix:
Water
Fraction:
Total
Beneficial Use:
Municipal & Domestic Supply
Number of Samples:
3
Number of Exceedances:
3
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP RWB7 Monitoring data for Wiest Lake to determine beneficial use support and results are as follows: 3 of 3 samples exceeded the water quality threshold for Turbidity.
California Maximum Contaminant Levels (MCLs) apply to ambient surface waters under the Basin Plan's 'Chemical Constituents' objective. The Secondary MCL for turbidity is 5 NTU. Calculation of a numeric objective for other beneficial uses requires comparison with upstream or other background data which may not be available as part of the data used for water quality assessment.
Do Not List on 303(d) list (TMDL required list)(2018)
Revision Status
Revised
Impairment from Pollutant or Pollution:
Pollutant
Regional Board Conclusion:
Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available
Regional Board Decision Recommendation:
After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
State Board Review of Regional Board Conclusion and Recommendation:
State Board Decision Recommendation:
After review of 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 it cannot be determined if applicable water quality standards are not being exceeded.
Listing Extent:
Line of Evidence (LOE) for Decision ID 164473, alpha-Endosulfan (Endosulfan 1)
Region 7
Wiest Lake
LOE ID:
46302
Pollutant:
alpha-Endosulfan (Endosulfan 1)
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:
1
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Endosulfan I. One composite (3 fish per composite) was generated from one species: channel catfish. Details of the compositing protocol can be found in the March 2009 report entitled: "Contaminants in Fish from California Lakes and Reservoirs: Technical Report on Year One of a Two-Year Screening Study" (SWAMP, 2009).
No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (Water Quality Control Plan, Colorado River Basin).
The modified OEHHA Fish Contaminant Goal for endosulfan (l and ll) in fish tissue is 13,000 ppb. This screening level assumes an average body weight of 70 kg and a consumption rate of 32 g/day. A cooking reduction factor of 1 is applied for skin-off fillets.
Data for this line of evidence for Wiest Lake was collected at 1 monitoring site [ Wiest Lake_BOG - 723PWT019]. Samples were collected from 1 location. Individual sample locations consisted of an area within a given waterbody from which fish tissue samples were collected. The number of sample locations per waterbody was based on the overall size of the waterbody (SWAMP, 2010). Specifics of individual sampling locations can be found in the supplemental report entitled "Cruise Report for the Surface Waters Ambient Monitoring Program (SWAMP) Bioaccumulation Screening Study in California Lakes and Reservoirs, Sampling Dates: June 2007- March 2008" (SWAMP, 2008).
Temporal Representation:
Data was collected on a single day 11/1/2007.
Environmental Conditions:
Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:
Samples were collected, processed, and analyzed in accordance with the methods described in Quality Assurance Project Plan "Screening Study of Bioaccumulation in California Lakes and Reservoirs." (SWAMP, 2002).
Line of Evidence (LOE) for Decision ID 164473, alpha-Endosulfan (Endosulfan 1)
Region 7
Wiest Lake
LOE ID:
46303
Pollutant:
alpha-Endosulfan (Endosulfan 1)
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Cold Freshwater Habitat
Number of Samples:
1
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Endosulfan I. One composite (3 fish per composite) was generated from one species: channel catfish. Details of the compositing protocol can be found in the March 2009 report entitled: "Contaminants in Fish from California Lakes and Reservoirs: Technical Report on Year One of a Two-Year Screening Study" (SWAMP, 2009).
No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (Water Quality Control Plan, Colorado River Basin).
National Academy of Science guidelines (NAS 1972) establish a maximum total Endosulfan concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Data for this line of evidence for Wiest Lake was collected at 1 monitoring site [ Wiest Lake_BOG - 723PWT019]. Samples were collected from 1 location. Individual sample locations consisted of an area within a given waterbody from which fish tissue samples were collected. The number of sample locations per waterbody was based on the overall size of the waterbody (SWAMP, 2010). Specifics of individual sampling locations can be found in the supplemental report entitled "Cruise Report for the Surface Waters Ambient Monitoring Program (SWAMP) Bioaccumulation Screening Study in California Lakes and Reservoirs, Sampling Dates: June 2007- March 2008" (SWAMP, 2008).
Temporal Representation:
Data was collected on a single day 11/1/2007.
Environmental Conditions:
Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:
Samples were collected, processed, and analyzed in accordance with the methods described in Quality Assurance Project Plan "Screening Study of Bioaccumulation in California Lakes and Reservoirs." (SWAMP, 2002).
Line of Evidence (LOE) for Decision ID 164473, alpha-Endosulfan (Endosulfan 1)
Region 7
Wiest Lake
LOE ID:
46304
Pollutant:
alpha-Endosulfan (Endosulfan 1)
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Fish fillet
Beneficial Use:
Warm Freshwater Habitat
Number of Samples:
1
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Endosulfan I. One composite (3 fish per composite) was generated from one species: channel catfish. Details of the compositing protocol can be found in the March 2009 report entitled: "Contaminants in Fish from California Lakes and Reservoirs: Technical Report on Year One of a Two-Year Screening Study" (SWAMP, 2009).
No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (Water Quality Control Plan, Colorado River Basin).
National Academy of Science guidelines (NAS 1972) establish a maximum total Endosulfan concentration of 100 ug/Kg (wet weight) in tissue samples for protection of aquatic life from bioaccumulation of toxic substances.
Data for this line of evidence for Wiest Lake was collected at 1 monitoring site [ Wiest Lake_BOG - 723PWT019]. Samples were collected from 1 location. Individual sample locations consisted of an area within a given waterbody from which fish tissue samples were collected. The number of sample locations per waterbody was based on the overall size of the waterbody (SWAMP, 2010). Specifics of individual sampling locations can be found in the supplemental report entitled "Cruise Report for the Surface Waters Ambient Monitoring Program (SWAMP) Bioaccumulation Screening Study in California Lakes and Reservoirs, Sampling Dates: June 2007- March 2008" (SWAMP, 2008).
Temporal Representation:
Data was collected on a single day 11/1/2007.
Environmental Conditions:
Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:
Samples were collected, processed, and analyzed in accordance with the methods described in Quality Assurance Project Plan "Screening Study of Bioaccumulation in California Lakes and Reservoirs." (SWAMP, 2002).
Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available
Regional Board Decision Recommendation:
After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
State Board Review of Regional Board Conclusion and Recommendation:
State Board Decision Recommendation:
After review of 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 it cannot be determined if applicable water quality standards are not being exceeded.
Listing Extent:
Line of Evidence (LOE) for Decision ID 158766, pH
Region 7
Wiest Lake
LOE ID:
335938
Pollutant:
pH
LOE Subgroup:
Pollutant-Water
Matrix:
Water
Fraction:
None
Beneficial Use:
Cold Freshwater Habitat
Number of Samples:
3
Number of Exceedances:
0
Data and Information Type:
PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:
Water Board staff assessed SWAMP RWB7 Monitoring data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for pH.
The Water Quality Control Plan for the Colorado River Basin Region's water quality objective for all surface waters states the following: Since the regional waters are somewhat alkaline, pH shall range from 6.0-9.0. Discharges shall not cause any changes in pH detrimental to beneficial water uses.
Water Board staff assessed SWAMP RWB7 Monitoring data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for pH.
The Water Quality Control Plan for the Colorado River Basin Region's water quality objective for all surface waters states the following: Since the regional waters are somewhat alkaline, pH shall range from 6.0-9.0. Discharges shall not cause any changes in pH detrimental to beneficial water uses.
Water Board staff assessed SWAMP RWB7 Monitoring data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for pH.
The Water Quality Control Plan for the Colorado River Basin Region's water quality objective for all surface waters states the following: Since the regional waters are somewhat alkaline, pH shall range from 6.0-9.0. Discharges shall not cause any changes in pH detrimental to beneficial water uses.
Water Board staff assessed SWAMP RWB7 Monitoring data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for pH.
The Water Quality Control Plan for the Colorado River Basin Region's water quality objective for all surface waters states the following: Since the regional waters are somewhat alkaline, pH shall range from 6.0-9.0. Discharges shall not cause any changes in pH detrimental to beneficial water uses.
Water Board staff assessed SWAMP RWB7 Monitoring data for Wiest Lake to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for pH.
The Water Quality Control Plan for the Colorado River Basin Region's water quality objective for all surface waters states the following: Since the regional waters are somewhat alkaline, pH shall range from 6.0-9.0. Discharges shall not cause any changes in pH detrimental to beneficial water uses.
Do Not List on 303(d) list (TMDL required list)(2016)
Revision Status
Original
Impairment from Pollutant or Pollution:
Pollutant
Regional Board Conclusion:
Regional Board Conclusion:
This pollutant was considered for placement on the section 303(d) list in a previous assessment cycle.
No new information was reviewed for this current assessment cycle. However, a use rating of the LOE No. 6733 is changed from fully supporting to insufficient information due to insufficient sample size required by the Listing Policy to determine if the water quality objectives are met. Therefore, the previous conclusion remains unchanged, and is as follows:
This pollutant is being considered for placement on the section 303(d) list under section 3.5 of the Listing Policy. Under section 3.5 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 2 fish tissue samples exceeded the National Academy of Sciences fish tissue guideline and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy.
4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.
Regional Board Decision Recommendation:
There were no new readily available data or information to assess for this Integrated Report. This decision will remain the same until there is new readily available data or information to assess.
State Board Review of Regional Board Conclusion and Recommendation:
State Board Decision Recommendation:
After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.
Listing Extent:
Line of Evidence (LOE) for Decision ID 71456, Hexachlorocyclohexane (HCH) (mixture)
Region 7
Wiest Lake
LOE ID:
6733
Pollutant:
Hexachlorocyclohexane (HCH) (mixture)
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Total
Beneficial Use:
Warm Freshwater Habitat
Number of Samples:
2
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Two fish fillet samples were taken at 1 location in the lake. The samples were generally collected in 10/1989 and 12/1999. Of these two samples, neither exceeded the NAS tissue guideline (TSMP, 2007).
Basin Plan: No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (CRBRWQCB, 2006).
Samples were collected from the interior of Wiest Lake.
Temporal Representation:
Two largemouth bass fillet composite samples were collected in 10/1989 and 12/1999.
Environmental Conditions:
QAPP Information:
The field procedures are described in TSMP Data Reports and associated Appendices. CDFG's Laboratory applies Quality Assurance Program Plan procedures for laboratory Quality Assurance and Quality Control, as described in Rasmussen (1993).
Do Not List on 303(d) list (TMDL required list)(2016)
Revision Status
Original
Impairment from Pollutant or Pollution:
Pollutant
Regional Board Conclusion:
Regional Board Conclusion:
This pollutant was considered for placement on the section 303(d) list in a previous assessment cycle.
No new information was reviewed for this current assessment cycle. However, a use rating of the LOE No. 6733 is changed from fully supporting to insufficient information due to insufficient sample size required by the Listing Policy to determine if the water quality objectives are met. Therefore, the previous conclusion remains unchanged, and is as follows:
This pollutant is being considered for placement on the section 303(d) list under section 3.5 of the Listing Policy. Under section 3.5 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 2 fish tissue samples exceeded the National Academy of Sciences fish tissue guideline and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy.
4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.
Regional Board Decision Recommendation:
There were no new readily available data or information to assess for this Integrated Report. This decision will remain the same until there is new readily available data or information to assess.
State Board Review of Regional Board Conclusion and Recommendation:
State Board Decision Recommendation:
After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.
Listing Extent:
Line of Evidence (LOE) for Decision ID 71456, Hexachlorocyclohexane (HCH) (mixture)
Region 7
Wiest Lake
LOE ID:
6733
Pollutant:
Hexachlorocyclohexane (HCH) (mixture)
LOE Subgroup:
Pollutant-Tissue
Matrix:
Tissue
Fraction:
Total
Beneficial Use:
Warm Freshwater Habitat
Number of Samples:
2
Number of Exceedances:
0
Data and Information Type:
Fish tissue analysis
Data Used to Assess Water Quality:
Two fish fillet samples were taken at 1 location in the lake. The samples were generally collected in 10/1989 and 12/1999. Of these two samples, neither exceeded the NAS tissue guideline (TSMP, 2007).
Basin Plan: No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. There shall be no increase in hazardous chemical concentrations found in bottom sediments or aquatic life (CRBRWQCB, 2006).
Samples were collected from the interior of Wiest Lake.
Temporal Representation:
Two largemouth bass fillet composite samples were collected in 10/1989 and 12/1999.
Environmental Conditions:
QAPP Information:
The field procedures are described in TSMP Data Reports and associated Appendices. CDFG's Laboratory applies Quality Assurance Program Plan procedures for laboratory Quality Assurance and Quality Control, as described in Rasmussen (1993).