Water Body Name: | Sweetwater River, Upper (above Sweetwater Reservoir) |
Water Body ID: | CAR9092100020091030151520 |
Water Body Type: | River & Stream |
DECISION ID |
84896 |
Region 9 |
Sweetwater River, Upper (above Sweetwater Reservoir) |
||
Pollutant: | 1,2,3-Trichloropropane |
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 | Original |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.
One line of evidence is available in the administrative record to assess this pollutant. Zero of the zero samples exceed the beneficial use guidelines. 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 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. Zero of zero samples exceeded the guideline. The samples were not used in the assessment due to reporting limits that were higher than the guideline. The sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is fully supported using 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: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 77047 | ||||
Pollutant: | 1,2,3-Trichloropropane | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 0 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | Fixed station physical/chemical monitoring (conventional pollutants only) | ||||
Data Used to Assess Water Quality: | This data is not of sufficient resolution to determine if standards are being achieved, the reporting limit for the non-detected sample is greater than the criteria used to determine if water quality standards are being met. | ||||
Data Reference: | Data for Various Pollutants in Sweetwater Authority, 2000-2010. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological response in human, plant, animal, or aquatic life. | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the San Diego Basin | ||||
Evaluation Guideline: | The public health goal for 1,2,3-Trichloropropane is 0.0007 ug/L. | ||||
Guideline Reference: | Public Health Goal for 1,2,3-Trichloropropane in Drinking Water | ||||
Spatial Representation: | The sample was collected from Low Flow Barrier at Sweetwater River, Upper (above Sweetwater Reservoir). | ||||
Temporal Representation: | The sample was collected on January 15th 2007. | ||||
Environmental Conditions: | No environmental conditions were reported. | ||||
QAPP Information: | Samples were collected for as part of California Department of Health Services (CADHS) Inorganic Chemicals / Title 22 Primary Inorganic Standards and CADHS General Physical & Minerals / Title 22 Secondary Inorganic Standards because of the water is a source of drinking water. | ||||
QAPP Information Reference(s): | |||||
DECISION ID |
73535 |
Region 9 |
Sweetwater River, Upper (above Sweetwater Reservoir) |
||
Pollutant: | 2,4,5-TP (Silvex) |
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 | Original |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.
One line of evidence is available in the administrative record to assess this pollutant. Zero of one samples exceeded the criterion or guideline. 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 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. Zero of one sample exceeded the criterion or guideline and this sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is fully supported using 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: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 77048 | ||||
Pollutant: | 2,4,5-TP (Silvex) | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | Fixed station physical/chemical monitoring (conventional pollutants only) | ||||
Data Used to Assess Water Quality: | The sample did not exceed the water quality objective for 2,4,5-TP, thought to be protective of drinking water. | ||||
Data Reference: | Data for Various Pollutants in Sweetwater Authority, 2000-2010. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological response in human, plant, animal, or aquatic life. | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the San Diego Basin | ||||
Evaluation Guideline: | USEPA National Recomm. WQ Criteria, water + fish consump. in drinking water is 10 ug/L. | ||||
Guideline Reference: | National Recommended Water Quality Criteria. United States Environmental Protection Agency. Office of Water. Office of Science and Technology | ||||
Spatial Representation: | The sample was collected from Low Flow Barrier at Sweetwater River, Upper (above Sweetwater Reservoir) | ||||
Temporal Representation: | The sample was collected on January 15th 2007. | ||||
Environmental Conditions: | No environmental conditions were reported. | ||||
QAPP Information: | Samples were collected for as part of California Department of Health Services (CADHS) Inorganic Chemicals / Title 22 Primary Inorganic Standards and CADHS General Physical & Minerals / Title 22 Secondary Inorganic Standards because of the water is a source of drinking water. | ||||
QAPP Information Reference(s): | |||||
DECISION ID |
85028 |
Region 9 |
Sweetwater River, Upper (above Sweetwater Reservoir) |
||
Pollutant: | 2,4-D (2,4-Dichlorophenoxy acetic acid) |
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 | Original |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.
One line of evidence is available in the administrative record to assess this pollutant. Zero of one sample exceeded the 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 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. Zero of one sample exceeded the objective and this sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is fully supported using 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: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 77049 | ||||
Pollutant: | 2,4-D (2,4-Dichlorophenoxy acetic acid) | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | Fixed station physical/chemical monitoring (conventional pollutants only) | ||||
Data Used to Assess Water Quality: | The sample did not exceed the water quality objective for 2,4-D, thought to be protective of drinking water. | ||||
Data Reference: | Data for Various Pollutants in Sweetwater Authority, 2000-2010. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Water designated for use as domestic or municipal supply (MUN) shall not contain concentrations of chemical constituents in excess of the maximum contaminant levels specified in California Code of Regulations, Title 22, Table 64444-A of section 64444 (Organic Chemicals) which is incorporated by reference into this plan. This incorporation byreference is prospective including future changes to the incorporated provisions as the changes take effect. (See Table 3-5). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the San Diego Basin | ||||
Evaluation Guideline: | The California primary MCL in drinking water is 70 ug/L. | ||||
Guideline Reference: | MCLs for Regulated Drinking Water Contaminants, California Department of Public Health. | ||||
Guideline Reference: | Maximum Contaminant Levels for organic and inorganic chemicals. CCR Title 22 | ||||
Spatial Representation: | The sample was collected from Low Flow Barrier at Sweetwater River, Upper (above Sweetwater Reservoir) | ||||
Temporal Representation: | The sample was collected on January 15th 2007. | ||||
Environmental Conditions: | No environmental conditions were reported. | ||||
QAPP Information: | Samples were collected for as part of California Department of Health Services (CADHS) Inorganic Chemicals / Title 22 Primary Inorganic Standards and CADHS General Physical & Minerals / Title 22 Secondary Inorganic Standards because of the water is a source of drinking water. | ||||
QAPP Information Reference(s): | |||||
DECISION ID |
85029 |
Region 9 |
Sweetwater River, Upper (above Sweetwater Reservoir) |
||
Pollutant: | Alachlor |
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 | Original |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.
One line of evidence is available in the administrative record to assess this pollutant. Zero of one sample exceeded the 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 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. Zero of one sample exceeded the objective and this sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is fully supported using 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: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 77063 | ||||
Pollutant: | Alachlor | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | Fixed station physical/chemical monitoring (conventional pollutants only) | ||||
Data Used to Assess Water Quality: | The sample did not exceed the water quality objective for alachlor, thought to be protective of drinking water. | ||||
Data Reference: | Data for Various Pollutants in Sweetwater Authority, 2000-2010. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Water designated for use as domestic or municipal supply (MUN) shall not contain concentrations of chemical constituents in excess of the maximum contaminant levels specified in California Code of Regulations, Title 22, Table 64444-A of section 64444 (Organic Chemicals) which is incorporated by reference into this plan. This incorporation byreference is prospective including future changes to the incorporated provisions as the changes take effect. (See Table 3-5). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the San Diego Basin | ||||
Evaluation Guideline: | The California primary MCL for alachlor in drinking water is 2 ug/L. | ||||
Guideline Reference: | MCLs for Regulated Drinking Water Contaminants, California Department of Public Health. | ||||
Guideline Reference: | Maximum Contaminant Levels for organic and inorganic chemicals. CCR Title 22 | ||||
Spatial Representation: | The sample was collected from Low Flow Barrier at Sweetwater River, Upper (above Sweetwater Reservoir). | ||||
Temporal Representation: | The sample was collected on January 15th 2007. | ||||
Environmental Conditions: | No environmental conditions were reported. | ||||
QAPP Information: | Samples were collected for as part of California Department of Health Services (CADHS) Inorganic Chemicals / Title 22 Primary Inorganic Standards and CADHS General Physical & Minerals / Title 22 Secondary Inorganic Standards because of the water is a source of drinking water. | ||||
QAPP Information Reference(s): | |||||
DECISION ID |
85035 |
Region 9 |
Sweetwater River, Upper (above Sweetwater Reservoir) |
||
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 | Original |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.
Two lines of evidence are available in the administrative record to assess this pollutant. Zero of the one sample exceeds the municipal and domestic criterion. Zero of the zero sample exceeds the warm freshwater criterion. 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 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. Zero of the one sample exceeds the municipal and domestic criterion. Zero of the zero sample exceeds the warm freshwater criterion. The sample size for the municipal beneficial use is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is fully supported using table 3.1. The samples for the warm freshwater beneficial use were not used in the assessment due to reporting limits that were higher than the guideline. 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: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 77066 | ||||
Pollutant: | Aldrin | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 0 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | Fixed station physical/chemical monitoring (conventional pollutants only) | ||||
Data Used to Assess Water Quality: | This data is not of sufficient resolution to determine if standards are being achieved: the detection limit is greater than the criteria used to determine if water quality standards are being met. | ||||
Data Reference: | Data for Various Pollutants in Sweetwater Authority, 2000-2010. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The concentrations of toxic substances in the water column, sediments or biota shall not adversely affect beneficial uses. | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the San Diego Basin | ||||
Evaluation Guideline: | The Calif. Toxic Rule (USEPA) for other waters for aldrin is 0.00014 ug/L. | ||||
Guideline Reference: | Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition | ||||
Spatial Representation: | The sample was collected from Low Flow Barrier at Sweetwater River, Upper (above Sweetwater Reservoir). | ||||
Temporal Representation: | The sample was collected on January 15th 2007. | ||||
Environmental Conditions: | No environmental conditions were reported. | ||||
QAPP Information: | Samples were collected for as part of California Department of Health Services (CADHS) Inorganic Chemicals / Title 22 Primary Inorganic Standards and CADHS General Physical & Minerals / Title 22 Secondary Inorganic Standards because of the water is a source of drinking water. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 77065 | ||||
Pollutant: | Aldrin | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | Fixed station physical/chemical monitoring (conventional pollutants only) | ||||
Data Used to Assess Water Quality: | This data is not of sufficient resolution to determine if standards are being achieved: the detection limit is greater than the criteria used to determine if water quality standards are being met. | ||||
Data Reference: | Data for Various Pollutants in Sweetwater Authority, 2000-2010. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in the water column, sediments or biota at concentration(s) that adversely affect beneficial uses. Pesticides shall not be present at levels which will bioaccumulate in aquatic organisms to levels which are harmful to human health, wildlife or aquatic organisms.. | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the San Diego Basin | ||||
Evaluation Guideline: | The Calif. Toxic Rule for sources of drinking water for aldrin is 0.00013 ug/L. | ||||
Guideline Reference: | Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition | ||||
Spatial Representation: | The sample was collected from Low Flow Barrier at Sweetwater River, Upper (above Sweetwater Reservoir). | ||||
Temporal Representation: | The sample was collected on January 15th 2007. | ||||
Environmental Conditions: | No environmental conditions were reported. | ||||
QAPP Information: | Samples were collected for as part of California Department of Health Services (CADHS) Inorganic Chemicals / Title 22 Primary Inorganic Standards and CADHS General Physical & Minerals / Title 22 Secondary Inorganic Standards because of the water is a source of drinking water. | ||||
QAPP Information Reference(s): | |||||
DECISION ID |
86958 |
Region 9 |
Sweetwater River, Upper (above Sweetwater Reservoir) |
||
Pollutant: | Ammonia |
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 | Original |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.
One line of evidence is available in the administrative record to assess this pollutant. Zero of the one samples exceed the criteria. 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 CWA 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. Zero of one samples exceeded the criteria and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. The number of samples is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. 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: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
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LOE ID: | 77082 | ||||
Pollutant: | Nitrogen, ammonia (Total Ammonia) | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
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 County of San Diego data for Sweetwater River, Upper (above Sweetwater Reservoir) to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Ammonia As N, Total. | ||||
Data Reference: | Data for Metals, Nutrients, Inorganics, Organics, Pathogens, and Pesticides from the County of San Diego, 2003-2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Basin Plan: No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses (Water Quality Control Plan, San Diego Basin). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the San Diego Basin | ||||
Evaluation Guideline: | EPA's Lifetime Health advisory level for total ammonia is 30.0 mg/L as stated on page 8 of the 2006 edition of the drinking water standards and health advisories. This Advisory Level is defined as "the concentration of a chemical in drinking water that is not expected to cause any adverse noncarcinogenic effects for up to ten days of exposure." | ||||
Guideline Reference: | 2006 edition of the drinking water standards and health advisories. EPA 822-R-03-013 | ||||
Spatial Representation: | Data for this line of evidence for Sweetwater River, Upper (above Sweetwater Reservoir) was collected at 1 monitoring site [ Sweetwater River @ Old Bridge] | ||||
Temporal Representation: | Data was collected on a single day 6/11/2003. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The Quality Assurance Project Plan from the Truesdail Laboratories, Rev. 12, Enviromatrix Analytical and Dry Weather Monitoring Program Rev. 8 was followed. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan from the Truesdail Laboratories, Rev. 12, Enviromatrix Analytical and Dry Weather Monitoring Program Rev. 8. | ||||
DECISION ID |
85561 |
Region 9 |
Sweetwater River, Upper (above Sweetwater Reservoir) |
||
Pollutant: | Antimony |
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 | Original |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.
One line of evidence is available in the administrative record to assess this pollutant. One of two samples exceeded guideline. 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 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. One of two samples exceeded the guideline and this sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is fully supported using 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: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 77083 | ||||
Pollutant: | Antimony | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Not Recorded | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 2 | ||||
Number of Exceedances: | 1 | ||||
Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) | ||||
Data Used to Assess Water Quality: | One of the two detected results exceeded the MCL. The reporting limits for eleven non-detect samples were greater than the MCL, therefore these data could not be used in this assessment. | ||||
Data Reference: | Data for Various Pollutants in Sweetwater Authority, 2000-2010. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The CA Department of Health Services maximum contamination level (MCL) thought to be protective of drinking water for antimony is 6 ug/L. | ||||
Objective/Criterion Reference: | Maximum Contaminant Levels for organic and inorganic chemicals. CCR Title 22 | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the San Diego Basin | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Samples were collected from Low Flow Barrier at approximately 32 43'11.12"N /-116 57'1.71"W and from Sweetwater River Influent at approximately 32 42'14.97"N / -116 57'36.85"W. Both sample sites are part of Sweetwater River, Upper (above Sweetwater Reservoir). | ||||
Temporal Representation: | A sample was collected from Sweetwater River Influent in June of 2006. From 2007-2009, samples were collected from both Sweetwater River Influent and Low Flow Barrier biannually during the months of January and June/July. | ||||
Environmental Conditions: | |||||
QAPP Information: | Samples were collected for as part of California Department of Health Services (CADHS) Inorganic Chemicals / Title 22 Primary Inorganic Standards and CADHS General Physical & Minerals / Title 22 Secondary Inorganic Standards because of the water is a source of drinking water. | ||||
QAPP Information Reference(s): | |||||
DECISION ID |
86645 |
Region 9 |
Sweetwater River, Upper (above Sweetwater Reservoir) |
||
Pollutant: | Arsenic |
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 | Original |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.
Two lines of evidence are available in the administrative record to assess this pollutant for aquatic life. Zero of the fifteen samples exceed the CRITERIA. 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 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. Zero of fifteen samples exceeded the CRITERIA and this sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of sixteen samples is needed to determine if a beneficial use is fully supported using 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: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 77084 | ||||
Pollutant: | Arsenic | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
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 County of San Diego data for Sweetwater River, Upper (above Sweetwater Reservoir) to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Arsenic. | ||||
Data Reference: | Data for Metals, Nutrients, Inorganics, Pesticides and Toxicity from the Stormwater Monitoring Coalition Regional Monitoring of Southern California Coastal Watersheds, 2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The dissolved arsenic criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater for dissolved arsenic is 0.150 mg/L (California Toxics Rule, 2000). | ||||
Objective/Criterion Reference: | Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for Sweetwater River, Upper (above Sweetwater Reservoir) was collected at 1 monitoring site [ Sweetwater River, upper - 909_SMC00282] | ||||
Temporal Representation: | Data was collected on a single day 6/9/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The Quality Assurance Project Plan from the CRG Marine Laboratories and SMC Workplan was followed. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan from the CRG Marine Laboratories and SMC Workplan. | ||||
|
|||||
LOE ID: | 77085 | ||||
Pollutant: | Arsenic | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
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 County of San Diego data for Sweetwater River, Upper (above Sweetwater Reservoir) to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Arsenic. | ||||
Data Reference: | Data for Metals, Nutrients, Inorganics, Pesticides and Toxicity from the Stormwater Monitoring Coalition Regional Monitoring of Southern California Coastal Watersheds, 2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The California Maximum Contaminant Level for arsenic is 0.01 mg/L (Title 22 of the California Code of Regulations). | ||||
Objective/Criterion Reference: | Maximum Contaminant Levels for organic and inorganic chemicals. CCR Title 22 | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for Sweetwater River, Upper (above Sweetwater Reservoir) was collected at 1 monitoring site [ Sweetwater River, upper - 909_SMC00282] | ||||
Temporal Representation: | Data was collected on a single day 6/9/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The Quality Assurance Project Plan from the CRG Marine Laboratories and SMC Workplan was followed. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan from the CRG Marine Laboratories and SMC Workplan. | ||||
|
|||||
LOE ID: | 77098 | ||||
Pollutant: | Arsenic | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Not Recorded | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 14 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) | ||||
Data Used to Assess Water Quality: | None of the fourteen samples tested for Arsenic exceeded the CTR criteria of 0.15 mg/L. | ||||
Data Reference: | Data for Various Pollutants in Sweetwater Authority, 2000-2010. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Inland surface waters, enclosed bays, and estuaries shall not contain toxic pollutants in excess of the numerical objectives applicable to California specified in 40 CFR 131.36 (section 131.36 revised at 57 FR 60848, December 22, 1992). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the San Diego Basin | ||||
Evaluation Guideline: | California Toxics Rule lists criterion continuous concentrations (expressed as a 4-day average) for arsenic to protect aquatic life in freshwater. The CTR criteria for arsenic is 0.15 mg/L. ref2557 | ||||
Guideline Reference: | Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition | ||||
Spatial Representation: | Samples were collected from Low Flow Barrier at approximately 32 43'11.12"N /-116 57'1.71"W and from Sweetwater River Influent at approximately 32 42'14.97"N / -116 57'36.85"W. Both sample sites are part of Sweetwater River, Upper (above Sweetwater Reservoir). | ||||
Temporal Representation: | A sample was collected from Sweetwater River Influent in June of 2006. From 2007-2009, samples were collected from both Sweetwater River Influent and Low Flow Barrier biannually during the months of January and June/July. | ||||
Environmental Conditions: | |||||
QAPP Information: | Samples were collected for as part of California Department of Health Services (CADHS) Inorganic Chemicals / Title 22 Primary Inorganic Standards and CADHS General Physical & Minerals / Title 22 Secondary Inorganic Standards because of the water is a source of drinking water. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 77099 | ||||
Pollutant: | Arsenic | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Not Recorded | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 8 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) | ||||
Data Used to Assess Water Quality: | Zero of eight samples exceed the objective for MUN. | ||||
Data Reference: | Data for Various Pollutants in Sweetwater Authority, 2000-2010. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in human, plant, animal, or aquatic life. | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the San Diego Basin | ||||
Evaluation Guideline: | From the Basin Plan: For all waters with a municipal beneficial use, the WQO for Arsenic is 0.05 mg/L. | ||||
Guideline Reference: | Water Quality Control Plan for the San Diego Basin | ||||
Spatial Representation: | Samples were collected from Low Flow Barrier at approximately 32 43'11.12"N /-116 57'1.71"W and from Sweetwater River Influent at approximately 32 42'14.97"N / -116 57'36.85"W. Both sample sites are part of Sweetwater River, Upper (above Sweetwater Reservoir). | ||||
Temporal Representation: | A sample was collected from Sweetwater River Influent in June of 2006. From 2007-2009, samples were collected from both Sweetwater River Influent and Low Flow Barrier biannually during the months of January and June/July. | ||||
Environmental Conditions: | |||||
QAPP Information: | Samples were collected for as part of California Department of Health Services (CADHS) Inorganic Chemicals / Title 22 Primary Inorganic Standards and CADHS General Physical & Minerals / Title 22 Secondary Inorganic Standards because of the water is a source of drinking water. | ||||
QAPP Information Reference(s): | |||||
DECISION ID |
85030 |
Region 9 |
Sweetwater River, Upper (above Sweetwater Reservoir) |
||
Pollutant: | Atrazine |
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 | Original |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.
One line of evidence is available in the administrative record to assess this pollutant. Zero of one sample exceeded the 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 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. Zero of one sample exceeded the objective and this sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is fully supported using 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: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 77100 | ||||
Pollutant: | Atrazine | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | Fixed station physical/chemical monitoring (conventional pollutants only) | ||||
Data Used to Assess Water Quality: | The sample did not exceed the water quality objective for Atrazine, thought to be protective of drinking water. | ||||
Data Reference: | Data for Various Pollutants in Sweetwater Authority, 2000-2010. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Water designated for use as domestic or municipal supply (MUN) shall not contain concentrations of chemical constituents in excess of the maximum contaminant levels specified in California Code of Regulations, Title 22, Table 64444-A of section 64444 (Organic Chemicals) which is incorporated by reference into this plan. This incorporation byreference is prospective including future changes to the incorporated provisions as the changes take effect. (See Table 3-5). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the San Diego Basin | ||||
Evaluation Guideline: | The California primary MCL is 1.0 ug/L for drinking water. | ||||
Guideline Reference: | MCLs for Regulated Drinking Water Contaminants, California Department of Public Health. | ||||
Guideline Reference: | Maximum Contaminant Levels for organic and inorganic chemicals. CCR Title 22 | ||||
Spatial Representation: | The sample was collected from Low Flow Barrier at Sweetwater River, Upper (above Sweetwater Reservoir). | ||||
Temporal Representation: | The sample was collected on January 15th 2007. | ||||
Environmental Conditions: | No environmental conditions were reported. | ||||
QAPP Information: | Samples were collected for as part of California Department of Health Services (CADHS) Inorganic Chemicals / Title 22 Primary Inorganic Standards and CADHS General Physical & Minerals / Title 22 Secondary Inorganic Standards because of the water is a source of drinking water. | ||||
QAPP Information Reference(s): | |||||
DECISION ID |
85675 |
Region 9 |
Sweetwater River, Upper (above Sweetwater Reservoir) |
||
Pollutant: | Barium |
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 | Original |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.
One line of evidence is available in the administrative record to assess this pollutant. Zero of 13 samples exceeded guideline. 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 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. Zero of 13 samples exceeded the guideline and this sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is fully supported using 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: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 77101 | ||||
Pollutant: | Barium | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Not Recorded | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 13 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) | ||||
Data Used to Assess Water Quality: | None of the thirteen samples exceeded the MCL. | ||||
Data Reference: | Data for Various Pollutants in Sweetwater Authority, 2000-2010. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The CA Department of Health Services maximum contamination level (MCL) thought to be protective of drinking water for barium is 1,000 ug/L. | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the San Diego Basin | ||||
Objective/Criterion Reference: | Maximum Contaminant Levels for organic and inorganic chemicals. CCR Title 22 | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Samples were collected from Low Flow Barrier at approximately 32 43'11.12"N /-116 57'1.71"W and from Sweetwater River Influent at approximately 32 42'14.97"N / -116 57'36.85"W. Both sample sites are part of Sweetwater River, Upper (above Sweetwater Reservoir). | ||||
Temporal Representation: | A sample was collected from Sweetwater River Influent in June of 2006. From 2007-2009, samples were collected from both Sweetwater River Influent and Low Flow Barrier biannually during the months of January and June/July. | ||||
Environmental Conditions: | |||||
QAPP Information: | Samples were collected for as part of California Department of Health Services (CADHS) Inorganic Chemicals / Title 22 Primary Inorganic Standards and CADHS General Physical & Minerals / Title 22 Secondary Inorganic Standards because of the water is a source of drinking water. | ||||
QAPP Information Reference(s): | |||||
DECISION ID |
85070 |
Region 9 |
Sweetwater River, Upper (above Sweetwater Reservoir) |
||
Pollutant: | Benzo(a)pyrene |
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 | Original |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.
One line of evidence is available in the administrative record to assess this pollutant. Zero of one sample exceeded the guideline. 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 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. Zero of one sample exceeded the guideline and this sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is fully supported using 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: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 76860 | ||||
Pollutant: | Benzo(a)pyrene | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | Fixed station physical/chemical monitoring (conventional pollutants only) | ||||
Data Used to Assess Water Quality: | This data is not of sufficient resolution to determine if standards are being achieved: the detection limit is greater than the criteria used to determine if water quality standards are being met. | ||||
Data Reference: | Data for Various Pollutants in Sweetwater Authority, 2000-2010. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological response in human, plant, animal, or aquatic life. | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the San Diego Basin | ||||
Evaluation Guideline: | The California Toxics Rule (USEPA) for sources of drinking water for Benzo(a)pyrene is 0.0044 ug/L. | ||||
Guideline Reference: | Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition | ||||
Spatial Representation: | The sample was collected from Low Flow Barrier at Sweetwater River, Upper (above Sweetwater Reservoir). | ||||
Temporal Representation: | The sample was collected on January 15th 2007. | ||||
Environmental Conditions: | No environmental conditions were reported. | ||||
QAPP Information: | Samples were collected for as part of California Department of Health Services (CADHS) Inorganic Chemicals / Title 22 Primary Inorganic Standards and CADHS General Physical & Minerals / Title 22 Secondary Inorganic Standards because of the water is a source of drinking water. | ||||
QAPP Information Reference(s): | |||||
DECISION ID |
100603 |
Region 9 |
Sweetwater River, Upper (above Sweetwater Reservoir) |
||
Pollutant: | Beryllium |
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 | Original |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.
Two lines of evidence are available in the administrative record to assess this pollutant. Zero of the 13 samples exceed the beneficial use guideline for Municipal and Domestic use. 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 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. Zero of the 13 samples exceed the beneficial use guideline for Municipal and Domestic use. The sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is fully supported using table 3.1. |
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. |
|
|||||
LOE ID: | 76861 | ||||
Pollutant: | Beryllium | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Not Recorded | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 13 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) | ||||
Data Used to Assess Water Quality: | None of the thirteen samples exceeded the MCL. | ||||
Data Reference: | Data for Various Pollutants in Sweetwater Authority, 2000-2010. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The CA Department of Health Services maximum contamination level (MCL) thought to be protective of drinking water for beryllium is 4 ug/L. | ||||
Objective/Criterion Reference: | Maximum Contaminant Levels for organic and inorganic chemicals. CCR Title 22 | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the San Diego Basin | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Samples were collected from Low Flow Barrier at approximately 32 43'11.12"N /-116 57'1.71"W and from Sweetwater River Influent at approximately 32 42'14.97"N / -116 57'36.85"W. Both sample sites are part of Sweetwater River, Upper (above Sweetwater Reservoir). | ||||
Temporal Representation: | A sample was collected from Sweetwater River Influent in June of 2006. From 2007-2009, samples were collected from both Sweetwater River Influent and Low Flow Barrier biannually during the months of January and June/July. | ||||
Environmental Conditions: | |||||
QAPP Information: | Samples were collected for as part of California Department of Health Services (CADHS) Inorganic Chemicals / Title 22 Primary Inorganic Standards and CADHS General Physical & Minerals / Title 22 Secondary Inorganic Standards because of the water is a source of drinking water. | ||||
QAPP Information Reference(s): | |||||
DECISION ID |
84942 |
Region 9 |
Sweetwater River, Upper (above Sweetwater Reservoir) |
||
Pollutant: | Bifenthrin |
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 | Original |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.
One line of evidence is available in the administrative record to assess this pollutant. Zero of the zero samples exceed the beneficial use guidelines. 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 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. Zero of zero samples exceeded the guideline. The samples were not used in the assessment due to reporting limits that were higher than the guideline. The sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is fully supported using 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: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 78147 | ||||
Pollutant: | Bifenthrin | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 0 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed County of San Diego data for Sweetwater River, Upper (above Sweetwater Reservoir) to determine beneficial use support and results are as follows: 0 of 0 samples exceed the criterion for Bifenthrin. | ||||
Data Reference: | Data for Metals, Nutrients, Inorganics, Pesticides and Toxicity from the Stormwater Monitoring Coalition Regional Monitoring of Southern California Coastal Watersheds, 2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in human, plant, animal, or aquatic life (Water Quality Control Plan for the San Diego Basin). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the San Diego Basin | ||||
Evaluation Guideline: | The UC Davis Criteria for Bifenthrin for the protection of aquatic organisms is a 4 day average of 0.0006 ug/L (Fojut et al. 2012). | ||||
Guideline Reference: | Aquatic life water quality criteria derived via the UC Davis method: ll. Pyrethroid insecticides. Reviews of Environmental Contamination and Toxicology 216:51-103. | ||||
Spatial Representation: | Data for this line of evidence for Sweetwater River, Upper (above Sweetwater Reservoir) was collected at 1 monitoring site [ Sweetwater River, upper - 909_SMC00282] | ||||
Temporal Representation: | Data was collected on a single day 6/9/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The Quality Assurance Project Plan from the CRG Marine Laboratories and SMC Workplan was followed. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan from the CRG Marine Laboratories and SMC Workplan. | ||||
DECISION ID |
85071 |
Region 9 |
Sweetwater River, Upper (above Sweetwater Reservoir) |
||
Pollutant: | Bromacil |
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 | Original |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.
One line of evidence is available in the administrative record to assess this pollutant. Zero of one sample exceeded the guideline. 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 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. Zero of one sample exceeded the guideline and this sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is fully supported using 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: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 76882 | ||||
Pollutant: | Bromacil | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | Fixed station physical/chemical monitoring (conventional pollutants only) | ||||
Data Used to Assess Water Quality: | The sample did not exceed the water quality objective for Bromacil, thought to be protective of drinking water. | ||||
Data Reference: | Data for Various Pollutants in Sweetwater Authority, 2000-2010. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological response in human, plant, animal, or aquatic life. | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the San Diego Basin | ||||
Evaluation Guideline: | The USEPA, OPP Drinking Water Health Advisory - non cancer, is 70 ug/L for drinking water. | ||||
Guideline Reference: | OPP Pesticide Ecotoxicity Database. | ||||
Spatial Representation: | The sample was collected from Low Flow Barrier at Sweetwater River, Upper (above Sweetwater Reservoir). | ||||
Temporal Representation: | The sample was collected on January 15th 2007. | ||||
Environmental Conditions: | No environmental conditions were reported. | ||||
QAPP Information: | Samples were collected for as part of California Department of Health Services (CADHS) Inorganic Chemicals / Title 22 Primary Inorganic Standards and CADHS General Physical & Minerals / Title 22 Secondary Inorganic Standards because of the water is a source of drinking water. | ||||
QAPP Information Reference(s): | |||||
DECISION ID |
100607 |
Region 9 |
Sweetwater River, Upper (above Sweetwater Reservoir) |
||
Pollutant: | Cadmium |
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 | Original |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.
Six lines of evidence are available in the administrative record to assess this pollutant. Zero of nine, zero of one, and zero of 13 samples exceed the beneficial use guideline for Municipal and Domestic use. Zero of the 10 and zero of 14 samples exceed the beneficial use guideline for Warm Freshwater Habitat use. Samples are not combined for each beneficial use since the fraction is different for each LOE. 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 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. Zero of nine, zero of one, and zero of 13 samples exceed the beneficial use guideline for Municipal and Domestic use. Zero of the 10 and zero of 14 samples exceed the beneficial use guideline for Warm Freshwater Habitat use. The sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is fully supported using 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: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 76884 | ||||
Pollutant: | Cadmium | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 9 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed County of San Diego DWM data for Sweetwater River, Upper (above Sweetwater Reservoir) to determine beneficial use support and results are as follows: 0 of 9 samples exceed the criterion for Cadmium. | ||||
Data Reference: | Data for Metals, Nutrients, Inorganics, Organics, Pathogens, and Pesticides from the County of San Diego, 2003-2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The California Maximum Contaminant Level for cadmium is 0.005 mg/L (Title 22 of the California Code of Regulations). | ||||
Objective/Criterion Reference: | Maximum Contaminant Levels for organic and inorganic chemicals. CCR Title 22 | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for Sweetwater River, Upper (above Sweetwater Reservoir) was collected at 2 monitoring sites [ Sweetwater River @ Old Bridge, Sweetwater River @ Steele Canyon Road] | ||||
Temporal Representation: | Data was collected 6/11/2003 - 6/3/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The Quality Assurance Project Plan from the Truesdail Laboratories, Rev. 12, Enviromatrix Analytical and Dry Weather Monitoring Program Rev. 8 was followed. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan from the Truesdail Laboratories, Rev. 12, Enviromatrix Analytical and Dry Weather Monitoring Program Rev. 8. | ||||
|
|||||
LOE ID: | 76907 | ||||
Pollutant: | Cadmium | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
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 County of San Diego data for Sweetwater River, Upper (above Sweetwater Reservoir) to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Cadmium. | ||||
Data Reference: | Data for Metals, Nutrients, Inorganics, Pesticides and Toxicity from the Stormwater Monitoring Coalition Regional Monitoring of Southern California Coastal Watersheds, 2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The California Maximum Contaminant Level for cadmium is 0.005 mg/L (Title 22 of the California Code of Regulations). | ||||
Objective/Criterion Reference: | Maximum Contaminant Levels for organic and inorganic chemicals. CCR Title 22 | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for Sweetwater River, Upper (above Sweetwater Reservoir) was collected at 1 monitoring site [ Sweetwater River, upper - 909_SMC00282] | ||||
Temporal Representation: | Data was collected on a single day 6/9/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The Quality Assurance Project Plan from the CRG Marine Laboratories and SMC Workplan was followed. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan from the CRG Marine Laboratories and SMC Workplan. | ||||
|
|||||
LOE ID: | 76908 | ||||
Pollutant: | Cadmium | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Not Recorded | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 14 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) | ||||
Data Used to Assess Water Quality: | None of the fourteen samples tested for Cadmium exceeded the hardness adjusted CTR criteria. | ||||
Data Reference: | Data for Various Pollutants in Sweetwater Authority, 2000-2010. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Inland surface waters, enclosed bays, and estuaries shall not contain toxic pollutants in excess of the numerical objectives applicable to California specified in 40 CFR 131.36 (section 131.36 revised at 57 FR 60848, December 22, 1992). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the San Diego Basin | ||||
Evaluation Guideline: | California Toxics Rule (CTR) lists criterion continuous concentrations to protect aquatic life in freshwater. The criterion in freshwater is hardness dependent for each sample and varies based on the ambient hardness during sampling. Section (b)(1) in CTR contains the hardness dependent formula for the metals criterion. ref2557 | ||||
Guideline Reference: | Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition | ||||
Spatial Representation: | Samples were collected from Low Flow Barrier at approximately 32 43'11.12"N /-116 57'1.71"W and from Sweetwater River Influent at approximately 32 42'14.97"N / -116 57'36.85"W. Both sample sites are part of Sweetwater River, Upper (above Sweetwater Reservoir). | ||||
Temporal Representation: | A sample was collected from Sweetwater River Influent in June of 2006. From 2007-2009, samples were collected from both Sweetwater River Influent and Low Flow Barrier biannually during the months of January and June/July. | ||||
Environmental Conditions: | |||||
QAPP Information: | Samples were collected for as part of California Department of Health Services (CADHS) Inorganic Chemicals / Title 22 Primary Inorganic Standards and CADHS General Physical & Minerals / Title 22 Secondary Inorganic Standards because of the water is a source of drinking water. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 76885 | ||||
Pollutant: | Cadmium | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
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 County of San Diego Dept. of Public Works data for Sweetwater River, Upper (above Sweetwater Reservoir) to determine beneficial use support and results are as follows: 1 of 0 samples exceed the criterion for Cadmium. | ||||
Data Reference: | Data for Metals, Nutrients, Inorganics, Pesticides and Toxicity from the Stormwater Monitoring Coalition Regional Monitoring of Southern California Coastal Watersheds, 2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in human, plant, animal, or aquatic life. California Toxics Rule (CTR) lists criterion continuous concentrations (4-day average) to protect aquatic life in freshwater. The criterion in freshwater is hardness dependent for each sample and varies based on the ambient hardness during sampling. Section (b)(1) in CTR contains the hardness dependent formula for the metals criterion. | ||||
Objective/Criterion Reference: | Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for Sweetwater River, Upper (above Sweetwater Reservoir) was collected at 1 monitoring site [ Sweetwater River, upper - 909_SMC00282] | ||||
Temporal Representation: | Data was collected on a single day 6/9/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The Quality Assurance Project Plan from the CRG Marine Laboratories and SMC Workplan was followed. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan from the CRG Marine Laboratories and SMC Workplan. | ||||
|
|||||
LOE ID: | 76883 | ||||
Pollutant: | Cadmium | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 9 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed County of San Diego DWM data for Sweetwater River, Upper (above Sweetwater Reservoir) to determine beneficial use support and results are as follows: 0 of 9 samples exceed the criterion for Cadmium. | ||||
Data Reference: | Data for Metals, Nutrients, Inorganics, Organics, Pathogens, and Pesticides from the County of San Diego, 2003-2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | California Toxics Rule (CTR) lists criterion continuous concentrations to protect aquatic life in freshwater. The criterion in freshwater is hardness dependent for each sample and varies based on the ambient hardness during sampling. Section (b)(1) in CTR contains the hardness dependent formula for the metals criterion. | ||||
Objective/Criterion Reference: | Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for Sweetwater River, Upper (above Sweetwater Reservoir) was collected at 2 monitoring sites [ Sweetwater River @ Old Bridge, Sweetwater River @ Steele Canyon Road] | ||||
Temporal Representation: | Data was collected 6/11/2003 - 6/3/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The Quality Assurance Project Plan from the Truesdail Laboratories, Rev. 12, Enviromatrix Analytical and Dry Weather Monitoring Program Rev. 8 was followed. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan from the Truesdail Laboratories, Rev. 12, Enviromatrix Analytical and Dry Weather Monitoring Program Rev. 8. | ||||
|
|||||
LOE ID: | 76909 | ||||
Pollutant: | Cadmium | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Not Recorded | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 13 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) | ||||
Data Used to Assess Water Quality: | The detection limits for the thirteen non-detect samples were less than the objective value and therefore are meeting the objective. | ||||
Data Reference: | Data for Various Pollutants in Sweetwater Authority, 2000-2010. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in human, plant, animal, or aquatic life. | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the San Diego Basin | ||||
Evaluation Guideline: | Total cadmium levels should not exceed the California Department of Public Health Primary MCL of 5 ug/L. | ||||
Guideline Reference: | MCLs for Regulated Drinking Water Contaminants, California Department of Public Health. | ||||
Guideline Reference: | Maximum Contaminant Levels for organic and inorganic chemicals. CCR Title 22 | ||||
Spatial Representation: | Samples were collected from Low Flow Barrier at approximately 32 43'11.12"N /-116 57'1.71"W and from Sweetwater River Influent at approximately 32 42'14.97"N / -116 57'36.85"W. Both sample sites are part of Sweetwater River, Upper (above Sweetwater Reservoir). | ||||
Temporal Representation: | A sample was collected from Sweetwater River Influent in June of 2006. From 2007-2009, samples were collected from both Sweetwater River Influent and Low Flow Barrier biannually during the months of January and June/July. | ||||
Environmental Conditions: | |||||
QAPP Information: | Samples were collected for as part of California Department of Health Services (CADHS) Inorganic Chemicals / Title 22 Primary Inorganic Standards and CADHS General Physical & Minerals / Title 22 Secondary Inorganic Standards because of the water is a source of drinking water. | ||||
QAPP Information Reference(s): | |||||
DECISION ID |
84539 |
Region 9 |
Sweetwater River, Upper (above Sweetwater Reservoir) |
||
Pollutant: | Carbaryl |
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 | Original |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.
One line of evidence is available in the administrative record to assess this pollutant. The one sample did not exceed the criterion. 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 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. The one sample did not exceed the criterion and this sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is fully supported using 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: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 76910 | ||||
Pollutant: | Carbaryl | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | Fixed station physical/chemical monitoring (conventional pollutants only) | ||||
Data Used to Assess Water Quality: | The sample did not exceed the water quality objective for carbaryl, thought to be protective of freshwater aquatic life. | ||||
Data Reference: | Data for Various Pollutants in Sweetwater Authority, 2000-2010. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in the water column, sediments or biota at concentration(s) that adversely affect beneficial uses. Pesticides shall not be present at levels which will bioaccumulate in aquatic organisms to levels which are harmful to human health, wildlife or aquatic organisms. | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the San Diego Basin | ||||
Evaluation Guideline: | The National Recomended WQ Criteria, 4-day average, is 2.1 ug/L for freshwater aquatic life. | ||||
Guideline Reference: | National Recommended Water Quality Criteria. United States Environmental Protection Agency. Office of Water. Office of Science and Technology | ||||
Spatial Representation: | The sample was collected from Low Flow Barrier at Sweetwater River, Upper (above Sweetwater Reservoir). | ||||
Temporal Representation: | The sample was collected on January 15th 2007. | ||||
Environmental Conditions: | No environmental conditions were reported. | ||||
QAPP Information: | Samples were collected for as part of California Department of Health Services (CADHS) Inorganic Chemicals / Title 22 Primary Inorganic Standards and CADHS General Physical & Minerals / Title 22 Secondary Inorganic Standards because of the water is a source of drinking water. | ||||
QAPP Information Reference(s): | |||||
DECISION ID |
85078 |
Region 9 |
Sweetwater River, Upper (above Sweetwater Reservoir) |
||
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)(2016) |
Revision Status | Original |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.
Two lines of evidence are available in the administrative record to assess this pollutant. Zero of the zero samples exceed the criterion. 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 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. Zero of zero samples exceeded the criterion. The samples were not used in the assessment due to reporting limits that were higher than the guideline. The sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is fully supported using 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: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 76923 | ||||
Pollutant: | Chlordane | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 0 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | Fixed station physical/chemical monitoring (conventional pollutants only) | ||||
Data Used to Assess Water Quality: | This data is not of sufficient resolution to determine if standards are being achieved: the detection limit is greater than the criteria used to determine if water quality standards are being met. | ||||
Data Reference: | Data for Various Pollutants in Sweetwater Authority, 2000-2010. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in the water column, sediments or biota at concentration(s) that adversely affect beneficial uses. Pesticides shall not be present at levels which will bioaccumulate in aquatic organisms to levels which are harmful to human health, wildlife or aquatic organisms. | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the San Diego Basin | ||||
Evaluation Guideline: | The California Toxics Rule (USEPA) for other waters is 0.00059 ug/L for freshwater aquatic life. | ||||
Guideline Reference: | Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition | ||||
Spatial Representation: | The sample was collected from Low Flow Barrier at Sweetwater River, Upper (above Sweetwater Reservoir). | ||||
Temporal Representation: | The sample was collected on January 15th 2007. | ||||
Environmental Conditions: | No environmental conditions were reported. | ||||
QAPP Information: | Samples were collected for as part of California Department of Health Services (CADHS) Inorganic Chemicals / Title 22 Primary Inorganic Standards and CADHS General Physical & Minerals / Title 22 Secondary Inorganic Standards because of the water is a source of drinking water. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 76922 | ||||
Pollutant: | Chlordane | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 0 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | Fixed station physical/chemical monitoring (conventional pollutants only) | ||||
Data Used to Assess Water Quality: | This data is not of sufficient resolution to determine if standards are being achieved: the detection limit is greater than the criteria used to determine if water quality standards are being met. | ||||
Data Reference: | Data for Various Pollutants in Sweetwater Authority, 2000-2010. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in the water column, sediments or biota at concentration(s) that adversely affect beneficial uses. Pesticides shall not be present at levels which will bioaccumulate in aquatic organisms to levels which are harmful to human health, wildlife or aquatic organisms. | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the San Diego Basin | ||||
Evaluation Guideline: | The California Toxics Rule (USEPA) for sources of drinking water is 0.00057 ug/L. | ||||
Guideline Reference: | Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition | ||||
Spatial Representation: | The sample was collected from Low Flow Barrier at Sweetwater River, Upper (above Sweetwater Reservoir). | ||||
Temporal Representation: | The sample was collected on January 15th 2007. | ||||
Environmental Conditions: | No environmental conditions were reported. | ||||
QAPP Information: | Samples were collected for as part of California Department of Health Services (CADHS) Inorganic Chemicals / Title 22 Primary Inorganic Standards and CADHS General Physical & Minerals / Title 22 Secondary Inorganic Standards because of the water is a source of drinking water. | ||||
QAPP Information Reference(s): | |||||
DECISION ID |
85079 |
Region 9 |
Sweetwater River, Upper (above Sweetwater Reservoir) |
||
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)(2016) |
Revision Status | Original |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.
Two lines of evidence are available in the administrative record to assess this pollutant. Zero of the five samples exceed the municipal and domestic guideline. Zero of the zero sample exceeds the warm freshwater guideline. 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 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. Zero of the five samples exceed the municipal and domestic guideline. Zero of the zero sample exceeds the warm freshwater guideline. The sample size for the municipal beneficial use is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is fully supported using table 3.1. The samples for the warm freshwater beneficial use were not used in the assessment due to reporting limits that were higher than the guideline. 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: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 76924 | ||||
Pollutant: | Chlorpyrifos | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 0 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed County of San Diego data for Sweetwater River, Upper (above Sweetwater Reservoir) to determine beneficial use support and results are as follows: 0 of 0 samples exceed the criterion for Chlorpyrifos. | ||||
Data Reference: | Data for Metals, Nutrients, Inorganics, Organics, Pathogens, and Pesticides from the County of San Diego, 2003-2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in the water column, sediments or biota at concentration(s) that adversely affect beneficial uses (Water Quality Control Plan, San Diego Basin). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the San Diego Basin | ||||
Evaluation Guideline: | The freshwater criterion continuous concentration to protect aquatic organisms is 0.015 ug/L (Siepmann and Finlayson 2000). | ||||
Guideline Reference: | Water quality criteria for diazinon and chlorpyrifos. Administrative Report 00-3. Rancho Cordova, CA: Pesticide Investigations Unit, Office of Spills and Response. CA Department of Fish and Game (with minor corrections to significant figures as described in Beaulaurier et al., 2005). | ||||
Spatial Representation: | Data for this line of evidence for Sweetwater River, Upper (above Sweetwater Reservoir) was collected at 2 monitoring sites [ Sweetwater River @ Steele Canyon Road, Sweetwater River @ Old Bridge] | ||||
Temporal Representation: | Data was collected over the time period 5/1/2006-6/3/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The Quality Assurance Project Plan from the Truesdail Laboratories, Rev. 12, Enviromatrix Analytical and Dry Weather Monitoring Program Rev. 8 was followed. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan from the Truesdail Laboratories, Rev. 12, Enviromatrix Analytical and Dry Weather Monitoring Program Rev. 8. | ||||
|
|||||
LOE ID: | 78154 | ||||
Pollutant: | Chlorpyrifos | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 5 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed County of San Diego data for Sweetwater River, Upper (above Sweetwater Reservoir) to determine beneficial use support and results are as follows: 0 of 5 samples exceed the criterion for Chlorpyrifos. | ||||
Data Reference: | Data for Metals, Nutrients, Inorganics, Organics, Pathogens, and Pesticides from the County of San Diego, 2003-2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in the water column, sediments or biota at concentration(s) that adversely affect beneficial uses (Water Quality Control Plan, San Diego Basin). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the San Diego Basin | ||||
Evaluation Guideline: | The USEPA drinking water health advisory for chlorpyrifos is 2.1 µg/L. | ||||
Guideline Reference: | 2006 edition of the drinking water standards and health advisories. EPA 822-R-03-013 | ||||
Spatial Representation: | Data for this line of evidence for Sweetwater River, Upper (above Sweetwater Reservoir) was collected at 2 monitoring sites [ Sweetwater River @ Steele Canyon Road, Sweetwater River @ Old Bridge] | ||||
Temporal Representation: | Data was collected over the time period 5/1/2006-6/3/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The Quality Assurance Project Plan from the Truesdail Laboratories, Rev. 12, Enviromatrix Analytical and Dry Weather Monitoring Program Rev. 8 was followed. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan from the Truesdail Laboratories, Rev. 12, Enviromatrix Analytical and Dry Weather Monitoring Program Rev. 8. | ||||
DECISION ID |
100601 |
Region 9 |
Sweetwater River, Upper (above Sweetwater Reservoir) |
||
Pollutant: | Chromium |
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 | Original |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.
Six lines of evidence are available in the administrative record to assess this pollutant. Zero of 13 samples exceed the beneficial use guideline for Municipal and Domestic use. Zero of the 1 and zero of 14 samples exceed the beneficial use guideline for Warm Freshwater Habitat use. Samples are not combined for for warm Freshwater since the fraction is different for each LOE. 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 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. Zero of 13 samples exceed the beneficial use guideline for Municipal and Domestic use. Zero of the 1 and zero of 14 samples exceed the beneficial use guideline for Warm Freshwater Habitat use. The sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is fully supported using 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: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 76925 | ||||
Pollutant: | Chromium | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
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 County of San Diego Dept. of Public Works data for Sweetwater River, Upper (above Sweetwater Reservoir) to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Chromium. | ||||
Data Reference: | Data for Metals, Nutrients, Inorganics, Pesticides and Toxicity from the Stormwater Monitoring Coalition Regional Monitoring of Southern California Coastal Watersheds, 2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in human, plant, animal, or aquatic life. California Toxics Rule (CTR) lists criterion continuous concentrations (4-day average) to protect aquatic life in freshwater. The criterion in freshwater is hardness dependent for each sample and varies based on the ambient hardness during sampling. Section (b)(1) in CTR contains the hardness dependent formula for the metals criterion. | ||||
Objective/Criterion Reference: | Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for Sweetwater River, Upper (above Sweetwater Reservoir) was collected at 1 monitoring site [ Sweetwater River, upper - 909_SMC00282] | ||||
Temporal Representation: | Data was collected on a single day 6/9/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The Quality Assurance Project Plan from the CRG Marine Laboratories and SMC Workplan was followed. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan from the CRG Marine Laboratories and SMC Workplan. | ||||
|
|||||
LOE ID: | 76938 | ||||
Pollutant: | Chromium | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Not Recorded | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 14 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) | ||||
Data Used to Assess Water Quality: | None of the fourteen samples tested for Chromium exceeded the hardness adjusted CTR criteria. | ||||
Data Reference: | Data for Various Pollutants in Sweetwater Authority, 2000-2010. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Inland surface waters, enclosed bays, and estuaries shall not contain toxic pollutants in excess of the numerical objectives applicable to California specified in 40 CFR 131.36 (section 131.36 revised at 57 FR 60848, December 22, 1992). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the San Diego Basin | ||||
Evaluation Guideline: | California Toxics Rule (CTR) lists criterion continuous concentrations to protect aquatic life in freshwater. The criterion in freshwater is hardness dependent for each sample and varies based on the ambient hardness during sampling. Section (b)(1) in CTR contains the hardness dependent formula for the metals criterion. | ||||
Guideline Reference: | Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition | ||||
Spatial Representation: | Samples were collected from Low Flow Barrier at approximately 32 43'11.12"N /-116 57'1.71"W and from Sweetwater River Influent at approximately 32 42'14.97"N / -116 57'36.85"W. Both sample sites are part of Sweetwater River, Upper (above Sweetwater Reservoir). | ||||
Temporal Representation: | A sample was collected from Sweetwater River Influent in June of 2006. From 2007-2009, samples were collected from both Sweetwater River Influent and Low Flow Barrier biannually during the months of January and June/July. | ||||
Environmental Conditions: | |||||
QAPP Information: | Samples were collected for as part of California Department of Health Services (CADHS) Inorganic Chemicals / Title 22 Primary Inorganic Standards and CADHS General Physical & Minerals / Title 22 Secondary Inorganic Standards because of the water is a source of drinking water. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 76939 | ||||
Pollutant: | Chromium | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Not Recorded | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 13 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) | ||||
Data Used to Assess Water Quality: | None of the thirteen samples exceeded the MCL. | ||||
Data Reference: | Data for Various Pollutants in Sweetwater Authority, 2000-2010. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The CA Department of Health Services maximum contamination level (MCL) thought to be protective of drinking water for chromium, total is 50 ug/L. | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the San Diego Basin | ||||
Objective/Criterion Reference: | Maximum Contaminant Levels for organic and inorganic chemicals. CCR Title 22 | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Samples were collected from Low Flow Barrier at approximately 32 43'11.12"N /-116 57'1.71"W and from Sweetwater River Influent at approximately 32 42'14.97"N / -116 57'36.85"W. Both sample sites are part of Sweetwater River, Upper (above Sweetwater Reservoir) | ||||
Temporal Representation: | A sample was collected from Sweetwater River Influent in June of 2006. From 2007-2009, samples were collected from both Sweetwater River Influent and Low Flow Barrier biannually during the months of January and June/July. | ||||
Environmental Conditions: | |||||
QAPP Information: | Samples were collected for as part of California Department of Health Services (CADHS) Inorganic Chemicals / Title 22 Primary Inorganic Standards and CADHS General Physical & Minerals / Title 22 Secondary Inorganic Standards because of the water is a source of drinking water. | ||||
QAPP Information Reference(s): | |||||
DECISION ID |
85353 |
Region 9 |
Sweetwater River, Upper (above Sweetwater Reservoir) |
||
Pollutant: | Copper |
Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | Do Not List on 303(d) list (TMDL required list)(2016) |
Revision Status | Original |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.
Five lines of evidence are available in the administrative record to assess this pollutant. Zero of the ten samples exceed the beneficial use guideline for Municipal and Domestic use. One of the eight samples exceed the beneficial use guideline for Warm Freshwater Habitat use. The samples for the two beneficial uses cannot be combined since the fractions for the LOEs are not the same. 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 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. Zero of the ten samples exceed the beneficial use guideline for Municipal and Domestic use. One of the eight samples exceed the beneficial use guideline for Warm Freshwater Habitat use. The sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is fully supported using 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: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 76954 | ||||
Pollutant: | Copper | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
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 County of San Diego data for Sweetwater River, Upper (above Sweetwater Reservoir) to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Copper. | ||||
Data Reference: | Data for Metals, Nutrients, Inorganics, Pesticides and Toxicity from the Stormwater Monitoring Coalition Regional Monitoring of Southern California Coastal Watersheds, 2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The California Secondary MCL for copper is 1.0 mg/L (Title 22 California Code of Regulations). | ||||
Objective/Criterion Reference: | Secondary Maximum Contaminant Levels and Compliance. CCR Title 22 section 64449. | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for Sweetwater River, Upper (above Sweetwater Reservoir) was collected at 1 monitoring site [ Sweetwater River, upper - 909_SMC00282] | ||||
Temporal Representation: | Data was collected on a single day 6/9/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The Quality Assurance Project Plan from the CRG Marine Laboratories and SMC Workplan was followed. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan from the CRG Marine Laboratories and SMC Workplan. | ||||
|
|||||
LOE ID: | 76955 | ||||
Pollutant: | Copper | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Not Recorded | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 14 | ||||
Number of Exceedances: | 1 | ||||
Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) | ||||
Data Used to Assess Water Quality: | One of the fourteen samples tested for Copper exceeded the hardness adjusted CTR criteria. | ||||
Data Reference: | Data for Various Pollutants in Sweetwater Authority, 2000-2010. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Inland surface waters, enclosed bays, and estuaries shall not contain toxic pollutants in excess of the numerical objectives applicable to California specified in 40 CFR 131.36 (section 131.36 revised at 57 FR 60848, December 22, 1992). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the San Diego Basin | ||||
Evaluation Guideline: | California Toxics Rule (CTR) lists criterion continuous concentrations to protect aquatic life in freshwater. The criterion in freshwater is hardness dependent for each sample and varies based on the ambient hardness during sampling. Section (b)(1) in CTR contains the hardness dependent formula for the metals criterion. | ||||
Guideline Reference: | Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition | ||||
Spatial Representation: | Samples were collected from Low Flow Barrier at approximately 32 43'11.12"N /-116 57'1.71"W and from Sweetwater River Influent at approximately 32 42'14.97"N / -116 57'36.85"W. Both sample sites are part of Sweetwater River, Upper (above Sweetwater Reservoir). | ||||
Temporal Representation: | A sample was collected from Sweetwater River Influent in June of 2006. From 2007-2009, samples were collected from both Sweetwater River Influent and Low Flow Barrier biannually during the months of January and June/July. | ||||
Environmental Conditions: | |||||
QAPP Information: | Samples were collected for as part of California Department of Health Services (CADHS) Inorganic Chemicals / Title 22 Primary Inorganic Standards and CADHS General Physical & Minerals / Title 22 Secondary Inorganic Standards because of the water is a source of drinking water. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 76941 | ||||
Pollutant: | Copper | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 9 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed County of San Diego DWM data for Sweetwater River, Upper (above Sweetwater Reservoir) to determine beneficial use support and results are as follows: 0 of 9 samples exceed the criterion for Cadmium. | ||||
Data Reference: | Data for Metals, Nutrients, Inorganics, Organics, Pathogens, and Pesticides from the County of San Diego, 2003-2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The California Secondary MCL for copper is 1.0 mg/L (Title 22 California Code of Regulations). | ||||
Objective/Criterion Reference: | Secondary Maximum Contaminant Levels and Compliance. CCR Title 22 section 64449. | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for Sweetwater River, Upper (above Sweetwater Reservoir) was collected at 2 monitoring sites [ Sweetwater River @ Old Bridge, Sweetwater River @ Steele Canyon Road] | ||||
Temporal Representation: | Data was collected 6/11/2003 - 6/3/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The Quality Assurance Project Plan from the Truesdail Laboratories, Rev. 12, Enviromatrix Analytical and Dry Weather Monitoring Program Rev. 8 was followed. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan from the Truesdail Laboratories, Rev. 12, Enviromatrix Analytical and Dry Weather Monitoring Program Rev. 8. | ||||
|
|||||
LOE ID: | 76942 | ||||
Pollutant: | Copper | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
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 County of San Diego Dept. of Public Works data for Sweetwater River, Upper (above Sweetwater Reservoir) to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Copper. | ||||
Data Reference: | Data for Metals, Nutrients, Inorganics, Pesticides and Toxicity from the Stormwater Monitoring Coalition Regional Monitoring of Southern California Coastal Watersheds, 2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in human, plant, animal, or aquatic life. California Toxics Rule (CTR) lists criterion continuous concentrations (4-day average) to protect aquatic life in freshwater. The criterion in freshwater is hardness dependent for each sample and varies based on the ambient hardness during sampling. Section (b)(1) in CTR contains the hardness dependent formula for the metals criterion. | ||||
Objective/Criterion Reference: | Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for Sweetwater River, Upper (above Sweetwater Reservoir) was collected at 1 monitoring site [ Sweetwater River, upper - 909_SMC00282] | ||||
Temporal Representation: | Data was collected on a single day 6/9/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The Quality Assurance Project Plan from the CRG Marine Laboratories and SMC Workplan was followed. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan from the CRG Marine Laboratories and SMC Workplan. | ||||
|
|||||
LOE ID: | 76940 | ||||
Pollutant: | Copper | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 9 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed County of San Diego DWM data for Sweetwater River, Upper (above Sweetwater Reservoir) to determine beneficial use support and results are as follows: 0 of 9 samples exceed the criterion for Cadmium. | ||||
Data Reference: | Data for Metals, Nutrients, Inorganics, Organics, Pathogens, and Pesticides from the County of San Diego, 2003-2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | California Toxics Rule (CTR) lists criterion continuous concentrations to protect aquatic life in freshwater. The criterion in freshwater is hardness dependent for each sample and varies based on the ambient hardness during sampling. Section (b)(1) in CTR contains the hardness dependent formula for the metals criterion. | ||||
Objective/Criterion Reference: | Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for Sweetwater River, Upper (above Sweetwater Reservoir) was collected at 2 monitoring sites [ Sweetwater River @ Old Bridge, Sweetwater River @ Steele Canyon Road] | ||||
Temporal Representation: | Data was collected 6/11/2003 - 6/3/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The Quality Assurance Project Plan from the Truesdail Laboratories, Rev. 12, Enviromatrix Analytical and Dry Weather Monitoring Program Rev. 8 was followed. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan from the Truesdail Laboratories, Rev. 12, Enviromatrix Analytical and Dry Weather Monitoring Program Rev. 8. | ||||
DECISION ID |
85784 |
Region 9 |
Sweetwater River, Upper (above Sweetwater Reservoir) |
||
Pollutant: | Cyanide |
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 | Original |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.
One line of evidence is available in the administrative record to assess this pollutant. Zero of 13 samples exceeded guideline. 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 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. Zero of 13 samples exceeded the guideline and this sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is fully supported using 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: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 76956 | ||||
Pollutant: | Cyanide | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Not Recorded | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 13 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) | ||||
Data Used to Assess Water Quality: | All thirteen samples were reported as non-detect. The reporting limits were larger than the criteria of 5.2 ug/L used to assess water quality. | ||||
Data Reference: | Data for Various Pollutants in Sweetwater Authority, 2000-2010. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Inland surface waters, enclosed bays, and estuaries shall not contain toxic pollutants in excess of the numerical objectives applicable to California specified in 40 CFR 131.36 (section 131.36 revised at 57 FR 60848, December 22, 1992). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the San Diego Basin | ||||
Evaluation Guideline: | California Toxics Rule lists criterion continuous concentrations (expresesed as a 4-day average) for cyanide to protect aquatic life in freshwater. The criteria for cyanide is 5.2 ug/L | ||||
Guideline Reference: | Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition | ||||
Spatial Representation: | Samples were collected from Low Flow Barrier at approximately 32 43'11.12"N /-116 57'1.71"W and from Sweetwater River Influent at approximately 32 42'14.97"N / -116 57'36.85"W. Both sample sites are part of Sweetwater River, Upper (above Sweetwater Reservoir). | ||||
Temporal Representation: | A sample was collected from Sweetwater River Influent in June of 2006. From 2007-2009, samples were collected from both Sweetwater River Influent and Low Flow Barrier biannually during the months of January and June/July. | ||||
Environmental Conditions: | |||||
QAPP Information: | Samples were collected for as part of California Department of Health Services (CADHS) Inorganic Chemicals / Title 22 Primary Inorganic Standards and CADHS General Physical & Minerals / Title 22 Secondary Inorganic Standards because of the water is a source of drinking water. | ||||
QAPP Information Reference(s): | |||||
DECISION ID |
84943 |
Region 9 |
Sweetwater River, Upper (above Sweetwater Reservoir) |
||
Pollutant: | Cypermethrin |
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 | Original |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.
One line of evidence is available in the administrative record to assess this pollutant. Zero of the zero samples exceed the beneficial use guidelines. 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 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. Zero of zero samples exceeded the guideline. The samples were not used in the assessment due to reporting limits that were higher than the guideline. The sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is fully supported using 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: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 78160 | ||||
Pollutant: | Cypermethrin | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 0 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed County of San Diego data for Sweetwater River, Upper (above Sweetwater Reservoir) to determine beneficial use support and results are as follows: 0 of 0 samples exceed the criterion for Cypermethrin, total. | ||||
Data Reference: | Data for Metals, Nutrients, Inorganics, Pesticides and Toxicity from the Stormwater Monitoring Coalition Regional Monitoring of Southern California Coastal Watersheds, 2009. | ||||
SWAMP Data: | Non-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 for the San Diego Basin). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the San Diego Basin | ||||
Evaluation Guideline: | UC Davis Aquatic Life Criteria: Aquatic life should not be affected unacceptably if the 4-day average concentration of cypermethrin does not exceed 0.0002 ug/L and if the 1-h average concentration does not exceed 0.001 ug/L. Fojut et al. 2012) | ||||
Guideline Reference: | Aquatic life water quality criteria derived via the UC Davis method: ll. Pyrethroid insecticides. Reviews of Environmental Contamination and Toxicology 216:51-103. | ||||
Spatial Representation: | Data for this line of evidence for Sweetwater River, Upper (above Sweetwater Reservoir) was collected at 1 monitoring site [ Sweetwater River, upper - 909_SMC00282] | ||||
Temporal Representation: | Data was collected on a single day 6/9/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The Quality Assurance Project Plan from the CRG Marine Laboratories and SMC Workplan was followed. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan from the CRG Marine Laboratories and SMC Workplan. | ||||
DECISION ID |
84984 |
Region 9 |
Sweetwater River, Upper (above Sweetwater Reservoir) |
||
Pollutant: | DDD (Dichlorodiphenyldichloroethane) |
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 | Original |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.
One line of evidence is available in the administrative record to assess this pollutant. Zero of the zero sample exceed the beneficial use guidelines. 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 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. Zero of zero sample exceeded the guideline. The sample was not used in the assessment due to reporting limits that were higher than the guideline. The sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is fully supported using 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: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 76970 | ||||
Pollutant: | DDD (Dichlorodiphenyldichloroethane) | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 0 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | Fixed station physical/chemical monitoring (conventional pollutants only) | ||||
Data Used to Assess Water Quality: | This data is not of sufficient resolution to determine if standards are being achieved: the detection limit is greater than the criteria used to determine if water quality standards are being met. | ||||
Data Reference: | Data for Various Pollutants in Sweetwater Authority, 2000-2010. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in the water column, sediments or biota at concentration(s) that adversely affect beneficial uses. Pesticides shall not be present at levels which will bioaccumulate in aquatic organisms to levels which are harmful to human health, wildlife or aquatic organisms. | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the San Diego Basin | ||||
Evaluation Guideline: | The 4,4'-DDD criterion for the protection of human health from the consumption of water and organisms is 0.00031 ug/L (USEPA Nationally Recommended Criteria, 2006). | ||||
Guideline Reference: | National Recommended Water Quality Criteria. United States Environmental Protection Agency. Office of Water. Office of Science and Technology | ||||
Spatial Representation: | The sample was collected from Low Flow Barrier at Sweetwater River, Upper (above Sweetwater Reservoir). | ||||
Temporal Representation: | The sample was collected on January 15th 2007. | ||||
Environmental Conditions: | No environmental conditions were reported. | ||||
QAPP Information: | Samples were collected for as part of California Department of Health Services (CADHS) Inorganic Chemicals / Title 22 Primary Inorganic Standards and CADHS General Physical & Minerals / Title 22 Secondary Inorganic Standards because of the water is a source of drinking water. | ||||
QAPP Information Reference(s): | |||||
DECISION ID |
84985 |
Region 9 |
Sweetwater River, Upper (above Sweetwater Reservoir) |
||
Pollutant: | DDE (Dichlorodiphenyldichloroethylene) |
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 | Original |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.
One line of evidence is available in the administrative record to assess this pollutant. Zero of the zero sample exceed the beneficial use guidelines. 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 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. Zero of zero sample exceeded the guideline. The sample was not used in the assessment due to reporting limits that were higher than the guideline. The sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is fully supported using 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: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 76971 | ||||
Pollutant: | DDE (Dichlorodiphenyldichloroethylene) | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 0 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | Fixed station physical/chemical monitoring (conventional pollutants only) | ||||
Data Used to Assess Water Quality: | This data is not of sufficient resolution to determine if standards are being achieved: the detection limit is greater than the criteria used to determine if water quality standards are being met. | ||||
Data Reference: | Data for Various Pollutants in Sweetwater Authority, 2000-2010. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in the water column, sediments or biota at concentration(s) that adversely affect beneficial uses. Pesticides shall not be present at levels which will bioaccumulate in aquatic organisms to levels which are harmful to human health, wildlife or aquatic organisms. | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the San Diego Basin | ||||
Evaluation Guideline: | The 4,4'-DDE criterion for the protection of human health from the consumption of water and organisms is 0.00022 ug/L (USEPA Nationally Recommended Criteria, 2006). | ||||
Guideline Reference: | National Recommended Water Quality Criteria. United States Environmental Protection Agency. Office of Water. Office of Science and Technology | ||||
Spatial Representation: | The sample was collected from Low Flow Barrier at Sweetwater River, Upper (above Sweetwater Reservoir) | ||||
Temporal Representation: | The sample was collected on January 15th 2007. | ||||
Environmental Conditions: | No environmental conditions were reported. | ||||
QAPP Information: | Samples were collected for as part of California Department of Health Services (CADHS) Inorganic Chemicals / Title 22 Primary Inorganic Standards and CADHS General Physical & Minerals / Title 22 Secondary Inorganic Standards because of the water is a source of drinking water. | ||||
QAPP Information Reference(s): | |||||
DECISION ID |
84986 |
Region 9 |
Sweetwater River, Upper (above Sweetwater Reservoir) |
||
Pollutant: | DDT (Dichlorodiphenyltrichloroethane) |
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 | Original |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.
One line of evidence is available in the administrative record to assess this pollutant. Zero of the zero sample exceed the beneficial use guidelines. 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 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. Zero of zero sample exceeded the guideline. The sample was not used in the assessment due to reporting limits that were higher than the guideline. The sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is fully supported using 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: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 76972 | ||||
Pollutant: | DDT (Dichlorodiphenyltrichloroethane) | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 0 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | Fixed station physical/chemical monitoring (conventional pollutants only) | ||||
Data Used to Assess Water Quality: | This data is not of sufficient resolution to determine if standards are being achieved: the detection limit is greater than the criteria used to determine if water quality standards are being met. | ||||
Data Reference: | Data for Various Pollutants in Sweetwater Authority, 2000-2010. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in the water column, sediments or biota at concentration(s) that adversely affect beneficial uses. Pesticides shall not be present at levels which will bioaccumulate in aquatic organisms to levels which are harmful to human health, wildlife or aquatic organisms. | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the San Diego Basin | ||||
Evaluation Guideline: | The Calif. Toxics Rule for other waters is 0.00059 ug/L for DDT for freshwater aquatic life. | ||||
Guideline Reference: | Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition | ||||
Spatial Representation: | The sample was collected from Low Flow Barrier at Sweetwater River, Upper (above Sweetwater Reservoir). | ||||
Temporal Representation: | The sample was collected on January 15th 2007. | ||||
Environmental Conditions: | No environmental conditions were reported. | ||||
QAPP Information: | Samples were collected for as part of California Department of Health Services (CADHS) Inorganic Chemicals / Title 22 Primary Inorganic Standards and CADHS General Physical & Minerals / Title 22 Secondary Inorganic Standards because of the water is a source of drinking water. | ||||
QAPP Information Reference(s): | |||||
DECISION ID |
85072 |
Region 9 |
Sweetwater River, Upper (above Sweetwater Reservoir) |
||
Pollutant: | Dalapon |
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 | Original |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.
One line of evidence is available in the administrative record to assess this pollutant. Zero of one sample exceeded the 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 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. Zero of one sample exceeded the objective and this sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is fully supported using 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: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 76969 | ||||
Pollutant: | Dalapon | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | Fixed station physical/chemical monitoring (conventional pollutants only) | ||||
Data Used to Assess Water Quality: | The sample did not exceed the water quality objective for Dalapon, thought to be protective of drinking water. | ||||
Data Reference: | Data for Various Pollutants in Sweetwater Authority, 2000-2010. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Water designated for use as domestic or municipal supply (MUN) shall not contain concentrations of chemical constituents in excess of the maximum contaminant levels specified in California Code of Regulations, Title 22, Table 64444-A of section 64444 (Organic Chemicals) which is incorporated by reference into this plan. This incorporation byreference is prospective including future changes to the incorporated provisions as the changes take effect. (See Table 3-5). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the San Diego Basin | ||||
Evaluation Guideline: | The California primary MCL is 200 ug/L for drinking water. | ||||
Guideline Reference: | MCLs for Regulated Drinking Water Contaminants, California Department of Public Health. | ||||
Guideline Reference: | Maximum Contaminant Levels for organic and inorganic chemicals. CCR Title 22 | ||||
Spatial Representation: | The sample was collected from Low Flow Barrier at Sweetwater River, Upper (above Sweetwater Reservoir). | ||||
Temporal Representation: | The sample was collected on January 15th 2007. | ||||
Environmental Conditions: | No environmental conditions were reported. | ||||
QAPP Information: | Samples were collected for as part of California Department of Health Services (CADHS) Inorganic Chemicals / Title 22 Primary Inorganic Standards and CADHS General Physical & Minerals / Title 22 Secondary Inorganic Standards because of the water is a source of drinking water. | ||||
QAPP Information Reference(s): | |||||
DECISION ID |
73482 |
Region 9 |
Sweetwater River, Upper (above Sweetwater Reservoir) |
||
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)(2016) |
Revision Status | Original |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.
Two lines of evidence are available in the administrative record to assess this pollutant. Zero of the six samples exceed the criteria. 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 CWA 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. Zero of six samples exceeded the criteria and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. The number of samples is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. 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: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 78166 | ||||
Pollutant: | Diazinon | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 5 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed County of San Diego data for Sweetwater River, Upper (above Sweetwater Reservoir) to determine beneficial use support and results are as follows: 0 of 5 samples exceed the criterion for Diazinon. | ||||
Data Reference: | Data for Metals, Nutrients, Inorganics, Organics, Pathogens, and Pesticides from the County of San Diego, 2003-2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in the water column, sediments or biota at concentration(s) that adversely affect beneficial uses (Water Quality Control Plan, San Diego Basin). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the San Diego Basin | ||||
Evaluation Guideline: | The USEPA drinking water health advisory for diazinon is 1.4 µg/L. | ||||
Guideline Reference: | 2006 edition of the drinking water standards and health advisories. EPA 822-R-03-013 | ||||
Spatial Representation: | Data for this line of evidence for Sweetwater River, Upper (above Sweetwater Reservoir) was collected at 2 monitoring sites [ Sweetwater River @ Steele Canyon Road, Sweetwater River @ Old Bridge] | ||||
Temporal Representation: | Data was collected over the time period 5/1/2006-6/3/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The Quality Assurance Project Plan from the Truesdail Laboratories, Rev. 12, Enviromatrix Analytical and Dry Weather Monitoring Program Rev. 8 was followed. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan from the Truesdail Laboratories, Rev. 12, Enviromatrix Analytical and Dry Weather Monitoring Program Rev. 8. | ||||
|
|||||
LOE ID: | 76980 | ||||
Pollutant: | Diazinon | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 5 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed County of San Diego data for Sweetwater River, Upper (above Sweetwater Reservoir) to determine beneficial use support and results are as follows: 0 of 5 samples exceed the criterion for Diazinon. | ||||
Data Reference: | Data for Metals, Nutrients, Inorganics, Organics, Pathogens, and Pesticides from the County of San Diego, 2003-2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in the water column, sediments or biota at concentration(s) that adversely affect beneficial uses (Water Quality Control Plan, San Diego Basin). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the San Diego Basin | ||||
Evaluation Guideline: | The freshwater chronic value for diazinon is 0.1 ug/L, expressed as a continuous concentration (Finlayson, 2004). | ||||
Guideline Reference: | Water quality for diazinon. Memorandum to J. Karkoski, Central Valley RWQCB. Rancho Cordova, CA: Pesticide Investigation Unit, CA Department of Fish and Game | ||||
Spatial Representation: | Data for this line of evidence for Sweetwater River, Upper (above Sweetwater Reservoir) was collected at 2 monitoring sites [ Sweetwater River @ Steele Canyon Road, Sweetwater River @ Old Bridge] | ||||
Temporal Representation: | Data was collected over the time period 5/1/2006-6/3/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The Quality Assurance Project Plan from the Truesdail Laboratories, Rev. 12, Enviromatrix Analytical and Dry Weather Monitoring Program Rev. 8 was followed. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan from the Truesdail Laboratories, Rev. 12, Enviromatrix Analytical and Dry Weather Monitoring Program Rev. 8. | ||||
|
|||||
LOE ID: | 76981 | ||||
Pollutant: | Diazinon | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | Fixed station physical/chemical monitoring (conventional pollutants only) | ||||
Data Used to Assess Water Quality: | The sample did not exceed the water quality objective of 0.1 ug/L for Diazinon, thought to be protective of freshwater aquatic life. | ||||
Data Reference: | Data for Various Pollutants in Sweetwater Authority, 2000-2010. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in the water column, sediments or biota at concentration(s) that adversely affect beneficial uses. Pesticides shall not be present at levels which will bioaccumulate in aquatic organisms to levels which are harmful to human health, wildlife or aquatic organisms. | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the San Diego Basin | ||||
Evaluation Guideline: | The California Dept. of Fish & Game WQ Criteria, 4-day average, for diazinon is 0.1 ug/L for freshwater aquatic life. | ||||
Guideline Reference: | Water quality for diazinon. Memorandum to J. Karkoski, Central Valley RWQCB. Rancho Cordova, CA: Pesticide Investigation Unit, CA Department of Fish and Game | ||||
Spatial Representation: | The sample was collected from Low Flow Barrier at Sweetwater River, Upper (above Sweetwater Reservoir). | ||||
Temporal Representation: | The sample was collected on January 15th 2007. | ||||
Environmental Conditions: | No environmental conditions were reported. | ||||
QAPP Information: | Samples were collected for as part of California Department of Health Services (CADHS) Inorganic Chemicals / Title 22 Primary Inorganic Standards and CADHS General Physical & Minerals / Title 22 Secondary Inorganic Standards because of the water is a source of drinking water. | ||||
QAPP Information Reference(s): | |||||
DECISION ID |
84581 |
Region 9 |
Sweetwater River, Upper (above Sweetwater Reservoir) |
||
Pollutant: | Dicamba |
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 | Original |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.
One line of evidence is available in the administrative record to assess this pollutant. The one sample did not exceed the guideline. 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 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. The one sample did not exceed the guideline and this sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is fully supported using 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: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 76982 | ||||
Pollutant: | Dicamba | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | Fixed station physical/chemical monitoring (conventional pollutants only) | ||||
Data Used to Assess Water Quality: | The sample did not exceed the water quality objective for Dicambra, thought to be protective of drinking water.. | ||||
Data Reference: | Data for Various Pollutants in Sweetwater Authority, 2000-2010. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The concentrations of toxic substances in the water column, sediments or biota shall not adversely affect beneficial uses. | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the San Diego Basin | ||||
Evaluation Guideline: | The USEPA, OPP Drinking Water Health Advisory-non-cancer, is 4000 ug/L for drinking water. | ||||
Guideline Reference: | OPP Pesticide Ecotoxicity Database. | ||||
Spatial Representation: | The sample was collected from Low Flow Barrier at Sweetwater River, Upper (above Sweetwater Reservoir). | ||||
Temporal Representation: | The sample was collected on January 15th 2007. | ||||
Environmental Conditions: | No environmental conditions were reported. | ||||
QAPP Information: | Samples were collected for as part of California Department of Health Services (CADHS) Inorganic Chemicals / Title 22 Primary Inorganic Standards and CADHS General Physical & Minerals / Title 22 Secondary Inorganic Standards because of the water is a source of drinking water. | ||||
QAPP Information Reference(s): | |||||
DECISION ID |
84670 |
Region 9 |
Sweetwater River, Upper (above Sweetwater Reservoir) |
||
Pollutant: | Dieldrin |
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 | Original |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.
Two lines of evidence are available in the administrative record to assess this pollutant. Zero of the one sample exceed the beneficial use guidelines. 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 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. Zero of the one sample exceeded the guideline and this sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is fully supported using 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: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 76983 | ||||
Pollutant: | Dieldrin | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | Fixed station physical/chemical monitoring (conventional pollutants only) | ||||
Data Used to Assess Water Quality: | This data is not of sufficient resolution to determine if standards are being achieved: the detection limit is greater than the criteria used to determine if water quality standards are being met. | ||||
Data Reference: | Data for Various Pollutants in Sweetwater Authority, 2000-2010. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The concentrations of toxic substances in the water column, sediments or biota shall not adversely affect beneficial uses. | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the San Diego Basin | ||||
Evaluation Guideline: | The California Toxics Rule (USEPA) for sources of drinking water is 0.00014 ug/L. | ||||
Guideline Reference: | Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition | ||||
Spatial Representation: | The sample was collected from Low Flow Barrier at Sweetwater River, Upper (above Sweetwater Reservoir). | ||||
Temporal Representation: | The sample was collected on January 15th 2007. | ||||
Environmental Conditions: | No environmental conditions were reported. | ||||
QAPP Information: | Samples were collected for as part of California Department of Health Services (CADHS) Inorganic Chemicals / Title 22 Primary Inorganic Standards and CADHS General Physical & Minerals / Title 22 Secondary Inorganic Standards because of the water is a source of drinking water. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 76991 | ||||
Pollutant: | Dieldrin | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | Fixed station physical/chemical monitoring (conventional pollutants only) | ||||
Data Used to Assess Water Quality: | The sample did not exceed the water quality objective for Dieldrin, thought to be protective of freshwater aquatic life. | ||||
Data Reference: | Data for Various Pollutants in Sweetwater Authority, 2000-2010. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The concentrations of toxic substances in the water column, sediments or biota shall not adversely affect beneficial uses. | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the San Diego Basin | ||||
Evaluation Guideline: | The California Toxics Rule (USEPA) for dieldrin is 0.056 ug/L for protection of freshwater aquatic life. | ||||
Guideline Reference: | Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition | ||||
Spatial Representation: | The sample was collected from Low Flow Barrier at Sweetwater River, Upper (above Sweetwater Reservoir). | ||||
Temporal Representation: | The sample was collected on January 15th 2007. | ||||
Environmental Conditions: | No environmental conditions were reported. | ||||
QAPP Information: | Samples were collected for as part of California Department of Health Services (CADHS) Inorganic Chemicals / Title 22 Primary Inorganic Standards and CADHS General Physical & Minerals / Title 22 Secondary Inorganic Standards because of the water is a source of drinking water. | ||||
QAPP Information Reference(s): | |||||
DECISION ID |
85073 |
Region 9 |
Sweetwater River, Upper (above Sweetwater Reservoir) |
||
Pollutant: | Dinoseb |
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 | Original |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.
One line of evidence is available in the administrative record to assess this pollutant. Zero of one sample exceeded the 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 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. Zero of one sample exceeded the objective and this sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is fully supported using 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: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 76992 | ||||
Pollutant: | Dinoseb | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | Fixed station physical/chemical monitoring (conventional pollutants only) | ||||
Data Used to Assess Water Quality: | The sample did not exceed the water quality objective for Dinoseb, thought to be protective of drinking water. | ||||
Data Reference: | Data for Various Pollutants in Sweetwater Authority, 2000-2010. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The concentrations of toxic substances in the water column, sediments or biota shall not adversely affect beneficial uses. | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the San Diego Basin | ||||
Evaluation Guideline: | The California primary MCL for Dinoseb is 7 ug/L for drinking water. | ||||
Guideline Reference: | Maximum Contaminant Levels for organic and inorganic chemicals. CCR Title 22 | ||||
Spatial Representation: | The sample was collected from Low Flow Barrier at Sweetwater River, Upper (above Sweetwater Reservoir). | ||||
Temporal Representation: | The sample was collected on January 15th 2007. | ||||
Environmental Conditions: | No environmental conditions were reported. | ||||
QAPP Information: | Samples were collected for as part of California Department of Health Services (CADHS) Inorganic Chemicals / Title 22 Primary Inorganic Standards and CADHS General Physical & Minerals / Title 22 Secondary Inorganic Standards because of the water is a source of drinking water. | ||||
QAPP Information Reference(s): | |||||
DECISION ID |
84380 |
Region 9 |
Sweetwater River, Upper (above Sweetwater Reservoir) |
||
Pollutant: | Dioxin |
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 | Original |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.
One line of evidence is available in the administrative record to assess this pollutant. Zero of one sample exceeded the criterion. 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 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. Zero of one sample exceeded the criterion and this sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is fully supported using 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: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 76993 | ||||
Pollutant: | Dioxin | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | Fixed station physical/chemical monitoring (conventional pollutants only) | ||||
Data Used to Assess Water Quality: | This data is not of sufficient resolution to determine if standards are being achieved, the reporting limit for the non-detected sample is greater than the criteria used to determine if water quality standards are being met. | ||||
Data Reference: | Data for Various Pollutants in Sweetwater Authority, 2000-2010. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The concentrations of toxic substances in the water column, sediments or biota shall not adversely affect beneficial uses. | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the San Diego Basin | ||||
Evaluation Guideline: | The California Toxic Rule for 2,3,7,8-TCDD (Dioxin) is 0.013 pg/L for sources of drinking water. | ||||
Guideline Reference: | Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition | ||||
Spatial Representation: | The sample was collected from Low Flow Barrier at Sweetwater River, Upper (above Sweetwater Reservoir). | ||||
Temporal Representation: | The sample was collected on January 15th 2007. | ||||
Environmental Conditions: | No environmental conditions were reported. | ||||
QAPP Information: | Samples were collected for as part of California Department of Health Services (CADHS) Inorganic Chemicals / Title 22 Primary Inorganic Standards and CADHS General Physical & Minerals / Title 22 Secondary Inorganic Standards because of the water is a source of drinking water. | ||||
QAPP Information Reference(s): | |||||
DECISION ID |
86691 |
Region 9 |
Sweetwater River, Upper (above Sweetwater Reservoir) |
||
Pollutant: | Diuron |
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 | Original |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.
One line of evidence is available in the administrative record to assess this pollutant. Zero of one sample exceeded the guideline. 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 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. Zero of one sample exceeded the guideline and this sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is fully supported using 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: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 76994 | ||||
Pollutant: | Diuron | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | Fixed station physical/chemical monitoring (conventional pollutants only) | ||||
Data Used to Assess Water Quality: | The sample did not exceed the water quality objective for Diuron, thought to be protective of drinking water. | ||||
Data Reference: | Data for Various Pollutants in Sweetwater Authority, 2000-2010. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The concentrations of toxic substances in the water column, sediments or biota shall not adversely affect beneficial uses. | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the San Diego Basin | ||||
Evaluation Guideline: | The USEPA, Health Advisory, as a drinking water level is 2 ug/L. This constituent is likely a carcinogen and so the risk level is one in a million. | ||||
Guideline Reference: | 2012 Edition of the Drinking Water Standards and Health Advisories | ||||
Spatial Representation: | The sample was collected from Low Flow Barrier at Sweetwater River, Upper (above Sweetwater Reservoir). | ||||
Temporal Representation: | The sample was collected on January 15th 2007. | ||||
Environmental Conditions: | No environmental conditions were reported. | ||||
QAPP Information: | Samples were collected for as part of California Department of Health Services (CADHS) Inorganic Chemicals / Title 22 Primary Inorganic Standards and CADHS General Physical & Minerals / Title 22 Secondary Inorganic Standards because of the water is a source of drinking water. | ||||
QAPP Information Reference(s): | |||||
DECISION ID |
84766 |
Region 9 |
Sweetwater River, Upper (above Sweetwater Reservoir) |
||
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)(2016) |
Revision Status | Original |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.
Two lines of evidence are available in the administrative record to assess this pollutant. Zero of the one sample exceeded the beneficial use guidelines. 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 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. Zero of the one samples exceeded the guideline and this sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is fully supported using 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: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 76995 | ||||
Pollutant: | Endosulfan | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | Fixed station physical/chemical monitoring (conventional pollutants only) | ||||
Data Used to Assess Water Quality: | The sample did not exceed the water quality objective for Endosulfan, thought to be protective of drinking water. | ||||
Data Reference: | Data for Various Pollutants in Sweetwater Authority, 2000-2010. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The concentrations of toxic substances in the water column, sediments or biota shall not adversely affect beneficial uses. | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the San Diego Basin | ||||
Evaluation Guideline: | The California Toxics Rule for sources of drinking water is 110 ug/L for Endosulfan. | ||||
Guideline Reference: | Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition | ||||
Spatial Representation: | The sample was collected from Low Flow Barrier at Sweetwater River, Upper (above Sweetwater Reservoir). | ||||
Temporal Representation: | The sample was collected on January 15th 2007. | ||||
Environmental Conditions: | No environmental conditions were reported. | ||||
QAPP Information: | Samples were collected for as part of California Department of Health Services (CADHS) Inorganic Chemicals / Title 22 Primary Inorganic Standards and CADHS General Physical & Minerals / Title 22 Secondary Inorganic Standards because of the water is a source of drinking water. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 77003 | ||||
Pollutant: | Endosulfan | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | Fixed station physical/chemical monitoring (conventional pollutants only) | ||||
Data Used to Assess Water Quality: | This data is not of sufficient resolution to determine if standards are being achieved: the detection limit is greater than the criteria used to determine if water quality standards are being met. | ||||
Data Reference: | Data for Various Pollutants in Sweetwater Authority, 2000-2010. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The concentrations of toxic substances in the water column, sediments or biota shall not adversely affect beneficial uses. | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the San Diego Basin | ||||
Evaluation Guideline: | The National Toxics Rule (USEPA), 4-day average, total, is 0.036 ug/L for Endosulfan. | ||||
Guideline Reference: | Water Quality Standards; Establishment of Numeric Criteria for Priority Toxic Pollutants; States' Compliances | ||||
Spatial Representation: | The sample was collected from Low Flow Barrier at Sweetwater River, Upper (above Sweetwater Reservoir). | ||||
Temporal Representation: | The sample was collected on January 15th 2007. | ||||
Environmental Conditions: | No environmental conditions were reported. | ||||
QAPP Information: | Samples were collected for as part of California Department of Health Services (CADHS) Inorganic Chemicals / Title 22 Primary Inorganic Standards and CADHS General Physical & Minerals / Title 22 Secondary Inorganic Standards because of the water is a source of drinking water. | ||||
QAPP Information Reference(s): | |||||
DECISION ID |
84381 |
Region 9 |
Sweetwater River, Upper (above Sweetwater Reservoir) |
||
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)(2016) |
Revision Status | Original |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.
One line of evidence is available in the administrative record to assess this pollutant. Zero of one sample exceeded the criterion. 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 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. Zero of one sample exceeded the criterion and this sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is fully supported using 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: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 77005 | ||||
Pollutant: | Endrin | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | Fixed station physical/chemical monitoring (conventional pollutants only) | ||||
Data Used to Assess Water Quality: | None of the samples exceeded the criterion. | ||||
Data Reference: | Data for Various Pollutants in Sweetwater Authority, 2000-2010. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The concentrations of toxic substances in the water column, sediments or biota shall not adversely affect beneficial uses. | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the San Diego Basin | ||||
Evaluation Guideline: | The California Toxics Rule (USEPA), 4-day average total, is 0.76 ug/L. | ||||
Guideline Reference: | Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition | ||||
Spatial Representation: | The sample was collected from Low Flow Barrier at Sweetwater River, Upper (above Sweetwater Reservoir). | ||||
Temporal Representation: | The sample was collected on January 15th 2007. | ||||
Environmental Conditions: | No environmental conditions were reported. | ||||
QAPP Information: | Samples were collected for as part of California Department of Health Services (CADHS) Inorganic Chemicals / Title 22 Primary Inorganic Standards and CADHS General Physical & Minerals / Title 22 Secondary Inorganic Standards because of the water is a source of drinking water. | ||||
QAPP Information Reference(s): | |||||
DECISION ID |
84816 |
Region 9 |
Sweetwater River, Upper (above Sweetwater Reservoir) |
||
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 | Original |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.
Two lines of evidence are available in the administrative record to assess this pollutant. Zero of the one sample exceeds the beneficial use guidelines. 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 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. Zero of the one sample exceeded the guideline and this sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is fully supported using 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: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 77016 | ||||
Pollutant: | Heptachlor | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | Fixed station physical/chemical monitoring (conventional pollutants only) | ||||
Data Used to Assess Water Quality: | This data is not of sufficient resolution to determine if standards are being achieved: the detection limit is greater than the criteria used to determine if water quality standards are being met. | ||||
Data Reference: | Data for Various Pollutants in Sweetwater Authority, 2000-2010. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The concentrations of toxic substances in the water column, sediments or biota shall not adversely affect beneficial uses. | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the San Diego Basin | ||||
Evaluation Guideline: | The California Toxics Rule (USEPA) for Heptachlor is 0.0038ug/L for protection of freshwater habitat. | ||||
Guideline Reference: | Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition | ||||
Spatial Representation: | The sample was collected from Low Flow Barrier at Sweetwater River, Upper (above Sweetwater Reservoir). | ||||
Temporal Representation: | The sample was collected on January 15th 2007. | ||||
Environmental Conditions: | No environmental conditions were reported. | ||||
QAPP Information: | Samples were collected for as part of California Department of Health Services (CADHS) Inorganic Chemicals / Title 22 Primary Inorganic Standards and CADHS General Physical & Minerals / Title 22 Secondary Inorganic Standards because of the water is a source of drinking water. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 77008 | ||||
Pollutant: | Heptachlor | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | Fixed station physical/chemical monitoring (conventional pollutants only) | ||||
Data Used to Assess Water Quality: | This data is not of sufficient resolution to determine if standards are being achieved: the detection limit is greater than the criteria used to determine if water quality standards are being met. | ||||
Data Reference: | Data for Various Pollutants in Sweetwater Authority, 2000-2010. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The concentrations of toxic substances in the water column, sediments or biota shall not adversely affect beneficial uses. | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the San Diego Basin | ||||
Evaluation Guideline: | The California Toxics Rule (USEPA) for Heptachlor for sources of drinking water is 0.00021 ug/L. | ||||
Guideline Reference: | Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition | ||||
Spatial Representation: | The sample was collected from Low Flow Barrier at Sweetwater River, Upper (above Sweetwater Reservoir). | ||||
Temporal Representation: | The sample was collected on January 15th 2007. | ||||
Environmental Conditions: | No environmental conditions were reported. | ||||
QAPP Information: | Samples were collected for as part of California Department of Health Services (CADHS) Inorganic Chemicals / Title 22 Primary Inorganic Standards and CADHS General Physical & Minerals / Title 22 Secondary Inorganic Standards because of the water is a source of drinking water. | ||||
QAPP Information Reference(s): | |||||
DECISION ID |
85995 |
Region 9 |
Sweetwater River, Upper (above Sweetwater Reservoir) |
||
Pollutant: | Iron |
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 | Original |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.
One line of evidence is available in the administrative record to assess this pollutant. Zero of 14 samples exceeded the guideline. 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 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. Zero of 14 samples did not exceed the guideline and this sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is fully supported using 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: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 77017 | ||||
Pollutant: | Iron | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Not Recorded | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 14 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) | ||||
Data Used to Assess Water Quality: | None of the fourteen samples tested for iron exceeded the numeric criteria of 1 mg/L to protect warm freshwater habitat. | ||||
Data Reference: | Data for Various Pollutants in Sweetwater Authority, 2000-2010. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in human, plant, animal, or aquatic life. | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the San Diego Basin | ||||
Evaluation Guideline: | National Recommended Water Quality Criteria Continuous Concentrations are intended protect freshwater aquatic organisms from chronic exposures and are expressed as 4-day average concentrations. The numeric criteria for iron is 1 mg/L Ref16 | ||||
Guideline Reference: | National recommended water quality criteria: 2002. EPA-822-R-02-047 Washington, D.C. USEPA | ||||
Spatial Representation: | Samples were collected from Low Flow Barrier at approximately 32 43'11.12"N /-116 57'1.71"W and from Sweetwater River Influent at approximately 32 42'14.97"N / -116 57'36.85"W. Both sample sites are part of Sweetwater River, Upper (above Sweetwater Reservoir). | ||||
Temporal Representation: | A sample was collected from Sweetwater River Influent in June of 2006. From 2007-2009, samples were collected from both Sweetwater River Influent and Low Flow Barrier biannually during the months of January and June/July. | ||||
Environmental Conditions: | |||||
QAPP Information: | Samples were collected for as part of California Department of Health Services (CADHS) Inorganic Chemicals / Title 22 Primary Inorganic Standards and CADHS General Physical & Minerals / Title 22 Secondary Inorganic Standards because of the water is a source of drinking water. | ||||
QAPP Information Reference(s): | |||||
DECISION ID |
86698 |
Region 9 |
Sweetwater River, Upper (above Sweetwater Reservoir) |
||
Pollutant: | Lead |
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 | Original |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.
Two lines of evidence are available in the administrative record to assess this pollutant for aquatic life. Zero of the twenty-four samples exceed the CRITERIA. 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 CWA 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. Zero of twenty-four samples exceeded the CRITERIA and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
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: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 77019 | ||||
Pollutant: | Lead | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 9 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed County of San Diego DWM data for Sweetwater River, Upper (above Sweetwater Reservoir) to determine beneficial use support and results are as follows: 0 of 9 samples exceed the criterion for Cadmium. | ||||
Data Reference: | Data for Metals, Nutrients, Inorganics, Organics, Pathogens, and Pesticides from the County of San Diego, 2003-2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The California Maximum Contaminant Level for lead is 0.015 mg/L (Title 22 of the California Code of Regulations). | ||||
Objective/Criterion Reference: | Maximum Contaminant Levels for organic and inorganic chemicals. CCR Title 22 | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for Sweetwater River, Upper (above Sweetwater Reservoir) was collected at 2 monitoring sites [ Sweetwater River @ Old Bridge, Sweetwater River @ Steele Canyon Road] | ||||
Temporal Representation: | Data was collected 6/11/2003 - 6/3/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The Quality Assurance Project Plan from the Truesdail Laboratories, Rev. 12, Enviromatrix Analytical and Dry Weather Monitoring Program Rev. 8 was followed. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan from the Truesdail Laboratories, Rev. 12, Enviromatrix Analytical and Dry Weather Monitoring Program Rev. 8. | ||||
|
|||||
LOE ID: | 77018 | ||||
Pollutant: | Lead | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 9 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed County of San Diego DWM data for Sweetwater River, Upper (above Sweetwater Reservoir) to determine beneficial use support and results are as follows: 0 of 9 samples exceed the criterion for Lead. | ||||
Data Reference: | Data for Metals, Nutrients, Inorganics, Organics, Pathogens, and Pesticides from the County of San Diego, 2003-2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | California Toxics Rule (CTR) lists criterion continuous concentrations to protect aquatic life in freshwater. The criterion in freshwater is hardness dependent for each sample and varies based on the ambient hardness during sampling. Section (b)(1) in CTR contains the hardness dependent formula for the metals criterion. | ||||
Objective/Criterion Reference: | Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for Sweetwater River, Upper (above Sweetwater Reservoir) was collected at 2 monitoring sites [ Sweetwater River @ Old Bridge, Sweetwater River @ Steele Canyon Road] | ||||
Temporal Representation: | Data was collected 6/11/2003 - 6/3/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The Quality Assurance Project Plan from the Truesdail Laboratories, Rev. 12, Enviromatrix Analytical and Dry Weather Monitoring Program Rev. 8 was followed. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan from the Truesdail Laboratories, Rev. 12, Enviromatrix Analytical and Dry Weather Monitoring Program Rev. 8. | ||||
|
|||||
LOE ID: | 77033 | ||||
Pollutant: | Lead | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Not Recorded | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 14 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) | ||||
Data Used to Assess Water Quality: | One of fourteen samples tested for Lead exceeded the hardness adjusted CTR criteria. | ||||
Data Reference: | Data for Various Pollutants in Sweetwater Authority, 2000-2010. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Inland surface waters, enclosed bays, and estuaries shall not contain toxic pollutants in excess of the numerical objectives applicable to California specified in 40 CFR 131.36 (section 131.36 revised at 57 FR 60848, December 22, 1992). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the San Diego Basin | ||||
Evaluation Guideline: | California Toxics Rule (CTR) lists criterion continuous concentrations to protect aquatic life in freshwater. The criterion in freshwater is hardness dependent for each sample and varies based on the ambient hardness during sampling. Section (b)(1) in CTR contains the hardness dependent formula for the metals criterion. ref2557 | ||||
Guideline Reference: | Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition | ||||
Spatial Representation: | Samples were collected from Low Flow Barrier at approximately 32 43'11.12"N /-116 57'1.71"W and from Sweetwater River Influent at approximately 32 42'14.97"N / -116 57'36.85"W. Both sample sites are part of Sweetwater River, Upper (above Sweetwater Reservoir). | ||||
Temporal Representation: | A sample was collected from Sweetwater River Influent in June of 2006. From 2007-2009, samples were collected from both Sweetwater River Influent and Low Flow Barrier biannually during the months of January and June/July. | ||||
Environmental Conditions: | |||||
QAPP Information: | Samples were collected for as part of California Department of Health Services (CADHS) Inorganic Chemicals / Title 22 Primary Inorganic Standards and CADHS General Physical & Minerals / Title 22 Secondary Inorganic Standards because of the water is a source of drinking water. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 77034 | ||||
Pollutant: | Lead | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Not Recorded | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 14 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) | ||||
Data Used to Assess Water Quality: | 7 samples were collected at Low Flow Barrier and 7 samples were collected at Sweetwater River Influent. | ||||
Data Reference: | Data for Various Pollutants in Sweetwater Authority, 2000-2010. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in human, plant, animal, or aquatic life. | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the San Diego Basin | ||||
Evaluation Guideline: | The California Maximum Contaminant Level for lead is 0.015 mg/L (Title 22 of the California Code of Regulations). | ||||
Guideline Reference: | Maximum Contaminant Levels for organic and inorganic chemicals. CCR Title 22 | ||||
Spatial Representation: | Samples were collected from Low Flow Barrier at approximately 32 43'11.12"N /-116 57'1.71"W and from Sweetwater River Influent at approximately 32 42'14.97"N / -116 57'36.85"W. Both sample sites are part of Sweetwater River, Upper (above Sweetwater Reservoir). | ||||
Temporal Representation: | A sample was collected from Sweetwater River Influent in June of 2006. From 2007-2009, samples were collected from both Sweetwater River Influent and Low Flow Barrier biannually during the months of January and June/July. | ||||
Environmental Conditions: | |||||
QAPP Information: | Samples were collected for as part of California Department of Health Services (CADHS) Inorganic Chemicals / Title 22 Primary Inorganic Standards and CADHS General Physical & Minerals / Title 22 Secondary Inorganic Standards because of the water is a source of drinking water. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 77020 | ||||
Pollutant: | Lead | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
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 County of San Diego Dept. of Public Works data for Sweetwater River, Upper (above Sweetwater Reservoir) to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Lead. | ||||
Data Reference: | Data for Metals, Nutrients, Inorganics, Pesticides and Toxicity from the Stormwater Monitoring Coalition Regional Monitoring of Southern California Coastal Watersheds, 2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in human, plant, animal, or aquatic life. California Toxics Rule (CTR) lists criterion continuous concentrations (4-day average) to protect aquatic life in freshwater. The criterion in freshwater is hardness dependent for each sample and varies based on the ambient hardness during sampling. Section (b)(1) in CTR contains the hardness dependent formula for the metals criterion. | ||||
Objective/Criterion Reference: | Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for Sweetwater River, Upper (above Sweetwater Reservoir) was collected at 1 monitoring site [ Sweetwater River, upper - 909_SMC00282] | ||||
Temporal Representation: | Data was collected on a single day 6/9/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The Quality Assurance Project Plan from the CRG Marine Laboratories and SMC Workplan was followed. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan from the CRG Marine Laboratories and SMC Workplan. | ||||
DECISION ID |
84862 |
Region 9 |
Sweetwater River, Upper (above Sweetwater Reservoir) |
||
Pollutant: | Malathion |
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 | Original |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.
Two lines of evidence are available in the administrative record to assess this pollutant. Zero of the five samples exceed the beneficial use guidelines. 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 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. Zero of five samples exceeded the guideline and this sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is fully supported using 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: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 77035 | ||||
Pollutant: | Malathion | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 5 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed County of San Diego data for Sweetwater River, Upper (above Sweetwater Reservoir) to determine beneficial use support and results are as follows: 0 of 5 samples exceed the criterion for Malathion. | ||||
Data Reference: | Data for Metals, Nutrients, Inorganics, Organics, Pathogens, and Pesticides from the County of San Diego, 2003-2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in the water column, sediments or biota at concentration(s) that adversely affect beneficial uses (Water Quality Control Plan, San Diego Basin). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the San Diego Basin | ||||
Evaluation Guideline: | The USEPA national ambient water quality criteria for freshwater aquatic life instantaneous maximum for malathion is 0.1 µg/L. | ||||
Guideline Reference: | 2006 edition of the drinking water standards and health advisories. EPA 822-R-03-013 | ||||
Spatial Representation: | Data for this line of evidence for Sweetwater River, Upper (above Sweetwater Reservoir) was collected at 2 monitoring sites [ Sweetwater River @ Steele Canyon Road, Sweetwater River @ Old Bridge] | ||||
Temporal Representation: | Data was collected over the time period 5/1/2006-6/3/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The Quality Assurance Project Plan from the Truesdail Laboratories, Rev. 12, Enviromatrix Analytical and Dry Weather Monitoring Program Rev. 8 was followed. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan from the Truesdail Laboratories, Rev. 12, Enviromatrix Analytical and Dry Weather Monitoring Program Rev. 8. | ||||
|
|||||
LOE ID: | 78175 | ||||
Pollutant: | Malathion | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 5 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed County of San Diego data for Sweetwater River, Upper (above Sweetwater Reservoir) to determine beneficial use support and results are as follows: 0 of 5 samples exceed the criterion for Malathion. | ||||
Data Reference: | Data for Metals, Nutrients, Inorganics, Organics, Pathogens, and Pesticides from the County of San Diego, 2003-2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in the water column, sediments or biota at concentration(s) that adversely affect beneficial uses (Water Quality Control Plan, San Diego Basin). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the San Diego Basin | ||||
Evaluation Guideline: | The USEPA drinking water health advisory for malathion is 100 µg/L. | ||||
Guideline Reference: | 2006 edition of the drinking water standards and health advisories. EPA 822-R-03-013 | ||||
Spatial Representation: | Data for this line of evidence for Sweetwater River, Upper (above Sweetwater Reservoir) was collected at 2 monitoring sites [ Sweetwater River @ Steele Canyon Road, Sweetwater River @ Old Bridge] | ||||
Temporal Representation: | Data was collected over the time period 5/1/2006-6/3/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The Quality Assurance Project Plan from the Truesdail Laboratories, Rev. 12, Enviromatrix Analytical and Dry Weather Monitoring Program Rev. 8 was followed. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan from the Truesdail Laboratories, Rev. 12, Enviromatrix Analytical and Dry Weather Monitoring Program Rev. 8. | ||||
DECISION ID |
85899 |
Region 9 |
Sweetwater River, Upper (above Sweetwater Reservoir) |
||
Pollutant: | Mercury |
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 | Original |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.
Two lines of evidence are available in the administrative record to assess this pollutant. Zero of the zero samples exceed the beneficial use guideline for Municipal and Domestic use. Zero of the 14 samples exceed the beneficial use guideline for Warm Freshwater Habitat use. 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 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. Zero of the zero samples exceed the beneficial use guideline for Municipal and Domestic use. Zero of the 14 samples exceed the beneficial use guideline for Warm Freshwater Habitat use. The sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is fully supported using table 3.1. |
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. |
|
|||||
LOE ID: | 77051 | ||||
Pollutant: | Mercury | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Not Recorded | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 0 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) | ||||
Data Used to Assess Water Quality: | The reporting limits for the thirteen non-detect samples were greater than the criteria, therefore these data could not be used in this assessment. | ||||
Data Reference: | Data for Various Pollutants in Sweetwater Authority, 2000-2010. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in human, plant, animal, or aquatic life. | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the San Diego Basin | ||||
Evaluation Guideline: | California Toxics Rule criteria to protect human health exposure to elemental mercury is 0.05 ug/L. | ||||
Guideline Reference: | Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition | ||||
Spatial Representation: | Samples were collected from Low Flow Barrier at approximately 32 43'11.12"N /-116 57'1.71"W and from Sweetwater River Influent at approximately 32 42'14.97"N / -116 57'36.85"W. Both sample sites are part of Sweetwater River, Upper (above Sweetwater Reservoir). | ||||
Temporal Representation: | A sample was collected from Sweetwater River Influent in June of 2006. From 2007-2009, samples were collected from both Sweetwater River Influent and Low Flow Barrier biannually during the months of January and June/July. | ||||
Environmental Conditions: | |||||
QAPP Information: | Samples were collected for as part of California Department of Health Services (CADHS) Inorganic Chemicals / Title 22 Primary Inorganic Standards and CADHS General Physical & Minerals / Title 22 Secondary Inorganic Standards because of the water is a source of drinking water. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 77050 | ||||
Pollutant: | Mercury | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Not Recorded | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 14 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) | ||||
Data Used to Assess Water Quality: | None of the fourteen samples tested for mercury exceeded the numeric criteria of 0.77 ug/L, promulgated to protect warm freshwater habitat. | ||||
Data Reference: | Data for Various Pollutants in Sweetwater Authority, 2000-2010. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in human, plant, animal, or aquatic life. | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the San Diego Basin | ||||
Evaluation Guideline: | National Recommended Water Quality Criteria Continuous Concentrations are intended protect freshwater aquatic organisms from chronic exposures and are expressed as 4-day average concentrations. Criterion derived from data for inorganic mercury (II), but is applied to total mercury. It will probably be underprotective if a substantial portion of mercury in the water column is methylmercury. Derivation of criterion did not consider exposure through the diet, which is probably important for aquatic life occupying upper trophic levels. The numeric criteria for mercury is 0.77 ug/L. | ||||
Guideline Reference: | National Recommended Water Quality Criteria. United States Environmental Protection Agency. Office of Water. Office of Science and Technology | ||||
Spatial Representation: | Samples were collected from Low Flow Barrier at approximately 32 43'11.12"N /-116 57'1.71"W and from Sweetwater River Influent at approximately 32 42'14.97"N / -116 57'36.85"W. Both sample sites are part of Sweetwater River, Upper (above Sweetwater Reservoir). | ||||
Temporal Representation: | A sample was collected from Sweetwater River Influent in June of 2006. From 2007-2009, samples were collected from both Sweetwater River Influent and Low Flow Barrier biannually during the months of January and June/July. | ||||
Environmental Conditions: | |||||
QAPP Information: | Samples were collected for as part of California Department of Health Services (CADHS) Inorganic Chemicals / Title 22 Primary Inorganic Standards and CADHS General Physical & Minerals / Title 22 Secondary Inorganic Standards because of the water is a source of drinking water. | ||||
QAPP Information Reference(s): | |||||
DECISION ID |
97553 |
Region 9 |
Sweetwater River, Upper (above Sweetwater Reservoir) |
||
Pollutant: | Methoxychlor |
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 | Original |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.
Two lines of evidence are available in the administrative record to assess this pollutant. Zero of the one sample exceeds the municipal and domestic objective. Zero of the zero sample exceeds the warm freshwater criterion. 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 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. Zero of the one sample exceeds the municipal and domestic criterion. Zero of the zero sample exceeds the warm freshwater criterion. The sample size for the municipal beneficial use is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is fully supported using table 3.1. The samples for the warm freshwater beneficial use were not used in the assessment due to reporting limits that were higher than the guideline. 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: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 77053 | ||||
Pollutant: | Methoxychlor | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 0 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | Fixed station physical/chemical monitoring (conventional pollutants only) | ||||
Data Used to Assess Water Quality: | This data is not of sufficient resolution to determine if standards are being achieved: the detection limit is greater than the criteria used to determine if water quality standards are being met. | ||||
Data Reference: | Data for Various Pollutants in Sweetwater Authority, 2000-2010. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The concentrations of toxic substances in the water column, sediments or biota shall not adversely affect beneficial uses. | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the San Diego Basin | ||||
Evaluation Guideline: | National Recommended Water Quality Criteria for methoxychlor is 0.03 ug/L for protection of freshwater habitat. | ||||
Guideline Reference: | Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition | ||||
Spatial Representation: | The sample was collected from Low Flow Barrier at Sweetwater River, Upper (above Sweetwater Reservoir). | ||||
Temporal Representation: | The sample was collected on January 15th 2007. | ||||
Environmental Conditions: | No environmental conditions were reported. | ||||
QAPP Information: | Samples were collected for as part of California Department of Health Services (CADHS) Inorganic Chemicals / Title 22 Primary Inorganic Standards and CADHS General Physical & Minerals / Title 22 Secondary Inorganic Standards because of the water is a source of drinking water. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 77052 | ||||
Pollutant: | Methoxychlor | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | Fixed station physical/chemical monitoring (conventional pollutants only) | ||||
Data Used to Assess Water Quality: | The sample did not exceed the water quality objective for Methoxychlor, thought to be protective of drinking water. | ||||
Data Reference: | Data for Various Pollutants in Sweetwater Authority, 2000-2010. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The concentrations of toxic substances in the water column, sediments or biota shall not adversely affect beneficial uses. | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the San Diego Basin | ||||
Evaluation Guideline: | The California primary MCL for methoxychlor is 30 ug/L for drinking water. | ||||
Guideline Reference: | Maximum Contaminant Levels for organic and inorganic chemicals. CCR Title 22 | ||||
Spatial Representation: | The sample was collected from Low Flow Barrier at Sweetwater River, Upper (above Sweetwater Reservoir). | ||||
Temporal Representation: | The sample was collected on January 15th 2007. | ||||
Environmental Conditions: | No environmental conditions were reported. | ||||
QAPP Information: | Samples were collected for as part of California Department of Health Services (CADHS) Inorganic Chemicals / Title 22 Primary Inorganic Standards and CADHS General Physical & Minerals / Title 22 Secondary Inorganic Standards because of the water is a source of drinking water. | ||||
QAPP Information Reference(s): | |||||
DECISION ID |
100608 |
Region 9 |
Sweetwater River, Upper (above Sweetwater Reservoir) |
||
Pollutant: | Nickel |
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 | Original |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.
Two lines of evidence are available in the administrative record to assess this pollutant. None of the samples exceed the beneficial use guidelines. 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 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. None of the samples exceeded the guideline and this sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is fully supported using 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: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 77068 | ||||
Pollutant: | Nickel | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
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 County of San Diego Dept. of Public Works data for Sweetwater River, Upper (above Sweetwater Reservoir) to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Nickel. | ||||
Data Reference: | Data for Metals, Nutrients, Inorganics, Pesticides and Toxicity from the Stormwater Monitoring Coalition Regional Monitoring of Southern California Coastal Watersheds, 2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in human, plant, animal, or aquatic life. California Toxics Rule (CTR) lists criterion continuous concentrations (4-day average) to protect aquatic life in freshwater. The criterion in freshwater is hardness dependent for each sample and varies based on the ambient hardness during sampling. Section (b)(1) in CTR contains the hardness dependent formula for the metals criterion. | ||||
Objective/Criterion Reference: | Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for Sweetwater River, Upper (above Sweetwater Reservoir) was collected at 1 monitoring site [ Sweetwater River, upper - 909_SMC00282] | ||||
Temporal Representation: | Data was collected on a single day 6/9/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The Quality Assurance Project Plan from the CRG Marine Laboratories and SMC Workplan was followed. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan from the CRG Marine Laboratories and SMC Workplan. | ||||
|
|||||
LOE ID: | 77069 | ||||
Pollutant: | Nickel | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Not Recorded | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 14 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) | ||||
Data Used to Assess Water Quality: | None of the fourteen samples tested for Nickel exceeded the hardness adjusted CTR criteria. | ||||
Data Reference: | Data for Various Pollutants in Sweetwater Authority, 2000-2010. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Inland surface waters, enclosed bays, and estuaries shall not contain toxic pollutants in excess of the numerical objectives applicable to California specified in 40 CFR 131.36 (section 131.36 revised at 57 FR 60848, December 22, 1992). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the San Diego Basin | ||||
Evaluation Guideline: | California Toxics Rule (CTR) lists criterion continuous concentrations to protect aquatic life in freshwater. The criterion in freshwater is hardness dependent for each sample and varies based on the ambient hardness during sampling. Section (b)(1) in CTR contains the hardness dependent formula for the metals criterion. ref2557 | ||||
Guideline Reference: | Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition | ||||
Spatial Representation: | Samples were collected from Low Flow Barrier at approximately 32 43'11.12"N /-116 57'1.71"W and from Sweetwater River Influent at approximately 32 42'14.97"N / -116 57'36.85"W. Both sample sites are part of Sweetwater River, Upper (above Sweetwater Reservoir). | ||||
Temporal Representation: | A sample was collected from Sweetwater River Influent in June of 2006. From 2007-2009, samples were collected from both Sweetwater River Influent and Low Flow Barrier biannually during the months of January and June/July. | ||||
Environmental Conditions: | |||||
QAPP Information: | Samples were collected for as part of California Department of Health Services (CADHS) Inorganic Chemicals / Title 22 Primary Inorganic Standards and CADHS General Physical & Minerals / Title 22 Secondary Inorganic Standards because of the water is a source of drinking water. | ||||
QAPP Information Reference(s): | |||||
DECISION ID |
77322 |
Region 9 |
Sweetwater River, Upper (above Sweetwater Reservoir) |
||
Pollutant: | Nitrogen, Nitrate |
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 | Original |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.
Three lines of evidence are available in the administrative record to assess this pollutant. Zero of the seven samples exceed the criteria. 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 CWA 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. Zero of seven samples exceeded the criteria and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. The number of samples is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. 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: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 77072 | ||||
Pollutant: | Nitrogen, Nitrate | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 0 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) | ||||
Data Used to Assess Water Quality: | Six samples were collected with no samples detecting nitrite as N. However, it cannot be determined whether the reporting limit was below the water quality objective and therefore whether samples met the water quality objective. | ||||
Data Reference: | Data for Various Pollutants in Sweetwater Authority, 2000-2010. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | San Diego Region Basin Plan: Water designated for use as MUN shall not contain concentrations of inorganic chemicals in excess of the MCL set in the California Code of Regulations. The California MCL for nitrite as N is 1 mg/L. | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the San Diego Basin | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Samples were collected at Low Flow Barrier On Sweetwater River. | ||||
Temporal Representation: | Samples were collected biannually from 2007 to 2009. | ||||
Environmental Conditions: | |||||
QAPP Information: | Data was submitted with an unsigned water quality monitoring plan. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 77070 | ||||
Pollutant: | Nitrogen, Nitrate | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 6 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) | ||||
Data Used to Assess Water Quality: | None of six samples exceed the objective for nitrate (as N) at 10 mg/L. 4 of 6 samples are reported as non-detects. These non-detects are less than or equal to the water quality standard, the value will be considered as meeting the water quality standard, objective, criterion, or evaluation guideline. | ||||
Data Reference: | Data for Various Pollutants in Sweetwater Authority, 2000-2010. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan, San Diego Basin: Waters designated for MUN shall not contain concentrations of chemical constituents in excess of the MCL specified in Title 22 of the California Code of Regulations. The nitrate (as N) MCL is 10 mg/L. | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the San Diego Basin | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Samples were collected at Low Flow Barrier On Sweetwater River. | ||||
Temporal Representation: | Samples were collected biannually from 2007 to 2009. | ||||
Environmental Conditions: | |||||
QAPP Information: | Data was submitted with an unsigned water quality monitoring plan. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 77071 | ||||
Pollutant: | Nitrate/Nitrite (Nitrite + Nitrate as N) | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
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 County of San Diego data for Sweetwater River, Upper (above Sweetwater Reservoir) to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Nitrate/Nitrite as N. | ||||
Data Reference: | Data for Metals, Nutrients, Inorganics, Pesticides and Toxicity from the Stormwater Monitoring Coalition Regional Monitoring of Southern California Coastal Watersheds, 2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The California Maximum Contaminant Level for nitrate + nitrite (as N) is 10.0 mg/L (Title 22 of the California Code of Regulations). | ||||
Objective/Criterion Reference: | Maximum Contaminant Levels for organic and inorganic chemicals. CCR Title 22 | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for Sweetwater River, Upper (above Sweetwater Reservoir) was collected at 1 monitoring site [ Sweetwater River, upper - 909_SMC00282] | ||||
Temporal Representation: | Data was collected on a single day 6/9/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The Quality Assurance Project Plan from the CRG Marine Laboratories and SMC Workplan was followed. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan from the CRG Marine Laboratories and SMC Workplan. | ||||
DECISION ID |
86957 |
Region 9 |
Sweetwater River, Upper (above Sweetwater Reservoir) |
||
Pollutant: | Nitrogen, Nitrite |
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 | Original |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.
Two lines of evidence are available in the administrative record to assess this pollutant. Zero of the three samples exceed the criteria. 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 CWA 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. Zero of three samples exceeded the criteria and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. The number of samples is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. 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: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 77086 | ||||
Pollutant: | Nitrogen, Nitrite | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
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 County of San Diego data for Sweetwater River, Upper (above Sweetwater Reservoir) to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Nitrite as N. | ||||
Data Reference: | Data for Metals, Nutrients, Inorganics, Pesticides and Toxicity from the Stormwater Monitoring Coalition Regional Monitoring of Southern California Coastal Watersheds, 2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The California Maximum Contaminant Level for nitrite (as N) is 1.0 mg/L (Title 22 of the California Code of Regulations). | ||||
Objective/Criterion Reference: | Maximum Contaminant Levels for organic and inorganic chemicals. CCR Title 22 | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for Sweetwater River, Upper (above Sweetwater Reservoir) was collected at 1 monitoring site [ Sweetwater River, upper - 909_SMC00282] | ||||
Temporal Representation: | Data was collected on a single day 6/9/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The Quality Assurance Project Plan from the CRG Marine Laboratories and SMC Workplan was followed. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan from the CRG Marine Laboratories and SMC Workplan. | ||||
|
|||||
LOE ID: | 77087 | ||||
Pollutant: | Nitrogen, Nitrite | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
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 County of San Diego data for Sweetwater River, Upper (above Sweetwater Reservoir) to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for Nitrite as N. | ||||
Data Reference: | Data for Metals, Nutrients, Inorganics, Organics, Pathogens, and Pesticides from the County of San Diego, 2003-2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The California Maximum Contaminant Level for nitrite (as N) is 1.0 mg/L (Title 22 of the California Code of Regulations). | ||||
Objective/Criterion Reference: | Maximum Contaminant Levels for organic and inorganic chemicals. CCR Title 22 | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for Sweetwater River, Upper (above Sweetwater Reservoir) was collected at 1 monitoring site [ Sweetwater River @ Old Bridge] | ||||
Temporal Representation: | Data was collected over the time period 6/11/2003-6/12/2003. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The Quality Assurance Project Plan from the Truesdail Laboratories, Rev. 12, Enviromatrix Analytical and Dry Weather Monitoring Program Rev. 8 was followed. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan from the Truesdail Laboratories, Rev. 12, Enviromatrix Analytical and Dry Weather Monitoring Program Rev. 8. | ||||
DECISION ID |
85027 |
Region 9 |
Sweetwater River, Upper (above Sweetwater Reservoir) |
||
Pollutant: | PCBs (Polychlorinated biphenyls) |
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 | Original |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.
One line of evidence is available in the administrative record to assess this pollutant. Zero of the zero sample exceed the beneficial use guidelines. 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 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. Zero of zero sample exceeded the guideline. The sample was not used in the assessment due to reporting limits that were higher than the guideline. The sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is fully supported using 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: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 77088 | ||||
Pollutant: | PCBs (Polychlorinated biphenyls) | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 0 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | Fixed station physical/chemical monitoring (conventional pollutants only) | ||||
Data Used to Assess Water Quality: | This data is not of sufficient resolution to determine if standards are being achieved: the detection limit is greater than the criteria used to determine if water quality standards are being met. | ||||
Data Reference: | Data for Various Pollutants in Sweetwater Authority, 2000-2010. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The concentrations of toxic substances in the water column, sediments or biota shall not adversely affect beneficial uses. | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the San Diego Basin | ||||
Evaluation Guideline: | The California Toxics Rule (USEPA) for PCBs is 0.014 ug/L for protection of freshwater aquatic habitat. | ||||
Guideline Reference: | Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition | ||||
Spatial Representation: | The sample was collected from Low Flow Barrier at Sweetwater River, Upper (above Sweetwater Reservoir). | ||||
Temporal Representation: | The sample was collected on January 15th 2007. | ||||
Environmental Conditions: | No environmental conditions were reported. | ||||
QAPP Information: | Samples were collected for as part of California Department of Health Services (CADHS) Inorganic Chemicals / Title 22 Primary Inorganic Standards and CADHS General Physical & Minerals / Title 22 Secondary Inorganic Standards because of the water is a source of drinking water. | ||||
QAPP Information Reference(s): | |||||
DECISION ID |
84382 |
Region 9 |
Sweetwater River, Upper (above Sweetwater Reservoir) |
||
Pollutant: | Pentachlorophenol (PCP) |
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 | Original |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.
One line of evidence is available in the administrative record to assess this pollutant. Zero of one sample exceeded the criterion. 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 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. Zero of one sample exceeded the criterion and this sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is fully supported using 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: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 77089 | ||||
Pollutant: | Pentachlorophenol (PCP) | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | Fixed station physical/chemical monitoring (conventional pollutants only) | ||||
Data Used to Assess Water Quality: | The sample did not exceed the water quality objective for Pentachlorophenol. The PH collected on 01/23/07 was 7.91. | ||||
Data Reference: | Data for Various Pollutants in Sweetwater Authority, 2000-2010. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The concentrations of toxic substances in the water column, sediments or biota shall not adversely affect beneficial uses. | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the San Diego Basin | ||||
Evaluation Guideline: | The California Toxics Rule (USEPA), 4-day average at pH 7.8, is 15 ug/L for pentachlorophenol for freshwater aquatic life. | ||||
Guideline Reference: | Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition | ||||
Spatial Representation: | The sample was collected from Low Flow Barrier at Sweetwater River, Upper (above Sweetwater Reservoir). | ||||
Temporal Representation: | The samples were collected between Jan. 15, 2007. | ||||
Environmental Conditions: | No environmental conditions were reported. | ||||
QAPP Information: | Samples were collected for as part of California Department of Health Services (CADHS) Inorganic Chemicals / Title 22 Primary Inorganic Standards and CADHS General Physical & Minerals / Title 22 Secondary Inorganic Standards because of the water is a source of drinking water. | ||||
QAPP Information Reference(s): | |||||
DECISION ID |
77470 |
Region 9 |
Sweetwater River, Upper (above Sweetwater Reservoir) |
||
Pollutant: | Phosphorus |
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 | Original |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | The decision has not changed from the previous listing cycle. No new data were assessed for the current listing cycle. 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 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status. One line of evidence are available in the administrative record to assess this pollutant. None of the four samples exceed the water quality objective for phosphorus. 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 four samples exceeded the total phosphorus water quality objective and this sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is fully supported using 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: | This is a decision previously approved by the State Water Resources Control Board and the USEPA. No new data were assessed by the Regional Board for the current cycle. The decision has not changed. |
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. |
|
|||||
LOE ID: | 30890 | ||||
Pollutant: | Phosphorus | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 4 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | Fixed station physical/chemical monitoring (conventional pollutants only) | ||||
Data Used to Assess Water Quality: | None of the four samples collected exceed the water quality objective according to results in the Surface Water Ambient Monitoring Program Report, 2007. Samples were collected on June 1, 2005, September 7, 2005, January 31, 2006 and April 11, 2006. | ||||
Data Reference: | Monitoring data for Region 9 | ||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | Water bodies shall not contain biostimulatory substances in concentrations that promote aquatic growth to the extent that such growths cause nuisance or adversely affect beneficial uses. (RWQCB, 2007)
Water Quality Control Plan for the San Diego Basin Goal of 0.1 mg/L for total phosphorus in streams and other flowing waters. (RWQCB, 2007) |
||||
Objective/Criterion Reference: | Water Quality Control Plan for the San Diego Basin | ||||
Evaluation Guideline: | |||||
Guideline Reference: | Water Quality Control Plan for the San Diego Basin | ||||
Spatial Representation: | Samples were collected from the monitoring station Sweetwater River 3 (station id: 909SSWR03 lat/long: 32.97877/-117.23506), located on the main stem of the Sweetwater River. | ||||
Temporal Representation: | Samples were collected on June 1, 2005, September 7, 2005, January 31, 2006 and April 11, 2006. | ||||
Environmental Conditions: | The above sampling events occurred during dry weather declining base flow, dry weather minimum base flow, wet weather between storm events, and wet weather high base flow, respectively. | ||||
QAPP Information: | Quality control for the chemical analysis portion of this study was conducted in accordance with the California's Surface Water Ambient Monitoring Program. | ||||
QAPP Information Reference(s): | 2002. Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. California Department of Fish and Game, Monterey, CA | ||||
DECISION ID |
85785 |
Region 9 |
Sweetwater River, Upper (above Sweetwater Reservoir) |
||
Pollutant: | Silver |
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 | Original |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.
One line of evidence is available in the administrative record to assess this pollutant. Zero of 14 samples exceeded guideline. 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 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. Zero of 14 samples exceeded the guideline and this sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is fully supported using 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: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 77102 | ||||
Pollutant: | Silver | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Not Recorded | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 14 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) | ||||
Data Used to Assess Water Quality: | All fourteen samples were reported as non-detect. The reporting limits were larger than the criteria used to assess water quality. | ||||
Data Reference: | Data for Various Pollutants in Sweetwater Authority, 2000-2010. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Inland surface waters, enclosed bays, and estuaries shall not contain toxic pollutants in excess of the numerical objectives applicable to California specified in 40 CFR 131.36 (section 131.36 revised at 57 FR 60848, December 22, 1992). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the San Diego Basin | ||||
Evaluation Guideline: | California Toxics Rule (CTR) lists criterion maximum concentrations for silver to protect aquatic life in freshwater (1-hour average). The dissolved silver criterion in freshwater is hardness dependent for each sample and varies based on the ambient hardness during sampling. Section (b)(1) in CTR contains the hardness dependent formula for the metals criterion. If no hardness data were available, a value of 100 mg/L was used. ref2557 | ||||
Guideline Reference: | Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition | ||||
Spatial Representation: | Samples were collected from Low Flow Barrier at approximately 32 43'11.12"N /-116 57'1.71"W and from Sweetwater River Influent at approximately 32 42'14.97"N / -116 57'36.85"W. Both sample sites are part of Sweetwater River, Upper (above Sweetwater Reservoir). | ||||
Temporal Representation: | A sample was collected from Sweetwater River Influent in June of 2006. From 2007-2009, samples were collected from both Sweetwater River | ||||
Environmental Conditions: | |||||
QAPP Information: | Samples were collected for as part of California Department of Health Services (CADHS) Inorganic Chemicals / Title 22 Primary Inorganic Standards and CADHS General Physical & Minerals / Title 22 Secondary Inorganic Standards because of the water is a source of drinking water. | ||||
QAPP Information Reference(s): | |||||
DECISION ID |
77616 |
Region 9 |
Sweetwater River, Upper (above Sweetwater Reservoir) |
||
Pollutant: | Sulfates |
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 | Original |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | The decision has not changed from the previous listing cycle. No new data were assessed for the current listing cycle. 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 3.2 of the Listing Policy. Under section 3.2 one line of evidence are necessary to assess listing status. One line of evidence are 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 four samples exceeded the sulfate water quality objective and this sample size is insufficient to determine with the power and confidence of the Listing Policy if standards are not met. A minimum of five samples is needed for application of table 3.2. 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: | This is a decision previously approved by the State Water Resources Control Board and the USEPA. No new data were assessed by the Regional Board for the current cycle. The decision has not changed. |
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. |
|
|||||
LOE ID: | 30887 | ||||
Pollutant: | Sulfates | ||||
LOE Subgroup: | Pollution | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 4 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | Fixed station physical/chemical monitoring (conventional pollutants only) | ||||
Data Used to Assess Water Quality: | None of four samples collected in Sweetwater River show excessive sulfate concentrations according to results in California Surface Water Ambient Monitoring Program Report, 2007. Samples were collected in September 2005, June 2005, February 2006, and April 2006. | ||||
Data Reference: | Monitoring data for Region 9 | ||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | The recommended secondary drinking water standard for sulfate is 250 mg/l (RWQCB, 2007). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the San Diego Basin | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Water samples were collected at Sweetwater River Stations 909SSWR03. | ||||
Temporal Representation: | Samples were collected in September 2005, June 2005, February 2006, and April 2006. | ||||
Environmental Conditions: | |||||
QAPP Information: | Quality control for the chemical analysis portion of this study was conducted in accordance with the California Surface Water Ambient Monitoring Program. | ||||
QAPP Information Reference(s): | 2002. Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. California Department of Fish and Game, Monterey, CA | ||||
DECISION ID |
84996 |
Region 9 |
Sweetwater River, Upper (above Sweetwater Reservoir) |
||
Pollutant: | Temperature, water |
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 | Original |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.2 of the Listing Policy. Under section 3.2 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. Two of eleven samples exceeded the guideline. 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 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. Two of eleven samples exceeded the guideline and this sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is fully supported using 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: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 77103 | ||||
Pollutant: | Temperature, water | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 11 | ||||
Number of Exceedances: | 2 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Two of the 11 samples exceeded the evaluation guideline for temperature in this water body. | ||||
Data Reference: | Data for Trash, Nutrients, and Pathogens in Region 9, 2007-2010. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The 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. At no time or place shall the temperature of any COLD water be increased more than 5°F above the natural receiving water temperature. | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the San Diego Basin | ||||
Evaluation Guideline: | 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). Since there is no evaluation guideline for assessing temperature for the warm freshwater aquatic life beneficial use, this line of evidence will not be used for Listing Decisions in the 2012 Integrated Report and will be retired for said Listing cycle. | ||||
Guideline Reference: | Fish introductions in CA: History and impact on native fishes. Davis, CA: University of CA, Davis | ||||
Spatial Representation: | Samples were collected at the following station: SWT-030-SR 94 East | ||||
Temporal Representation: | Samples were collected between January, 2009 and July, 2010. | ||||
Environmental Conditions: | |||||
QAPP Information: | San Diego Regional Water Quality Assessment and Outreach Project Quality Assurance Project Plan Prepared by: Clay Clifton (San Diego Coastkeeper, Local Project Sponsor Manager), Bob Stafford (San Diego Stream Team), Dr. Rick Gersberg (San Diego State University), Bryan Bjorndal (Assure Controls, Inc.), and Morgan Justice-Black (I Love A Clean San Diego). | ||||
QAPP Information Reference(s): | |||||
DECISION ID |
85842 |
Region 9 |
Sweetwater River, Upper (above Sweetwater Reservoir) |
||
Pollutant: | Thallium |
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 | Original |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.
One line of evidence is available in the administrative record to assess this pollutant. Zero of 12 samples exceeded guideline. 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 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. Zero of 12 samples exceeded the guideline and this sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is fully supported using 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: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 77104 | ||||
Pollutant: | Thallium | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Not Recorded | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 12 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) | ||||
Data Used to Assess Water Quality: | None of the twelve samples exceeded the MCL. The reporting limits for one of the non-detect samples was greater than the MCL, therefore this data could not be used in this assessment. | ||||
Data Reference: | Data for Various Pollutants in Sweetwater Authority, 2000-2010. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The CA Department of Health Services maximum contamination level (MCL) thought to be protective of drinking water for thallium is 2 ug/L. | ||||
Objective/Criterion Reference: | Maximum Contaminant Levels for organic and inorganic chemicals. CCR Title 22 | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the San Diego Basin | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Samples were collected from Low Flow Barrier at approximately 32 43'11.12"N /-116 57'1.71"W and from Sweetwater River Influent at approximately 32 42'14.97"N / -116 57'36.85"W. Both sample sites are part of Sweetwater River, Upper (above Sweetwater Reservoir) | ||||
Temporal Representation: | A sample was collected from Sweetwater River Influent in June of 2006. From 2007-2009, samples were collected from both Sweetwater River Influent and Low Flow Barrier biannually during the months of January and June/July. | ||||
Environmental Conditions: | |||||
QAPP Information: | Samples were collected for as part of California Department of Health Services (CADHS) Inorganic Chemicals / Title 22 Primary Inorganic Standards and CADHS General Physical & Minerals / Title 22 Secondary Inorganic Standards because of the water is a source of drinking water. | ||||
QAPP Information Reference(s): | |||||
DECISION ID |
84987 |
Region 9 |
Sweetwater River, Upper (above Sweetwater Reservoir) |
||
Pollutant: | Total DDT (sum of 4,4'- and 2,4'- isomers of DDT, DDE, and DDD) |
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 | Original |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.
One line of evidence is available in the administrative record to assess this pollutant. Zero of the zero sample exceed the beneficial use guidelines. 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 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. Zero of zero sample exceeded the guideline. The sample was not used in the assessment due to reporting limits that were higher than the guideline. The sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is fully supported using 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: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 76863 | ||||
Pollutant: | Total DDT (sum of 4,4'- and 2,4'- isomers of DDT, DDE, and DDD) | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 0 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | Fixed station physical/chemical monitoring (conventional pollutants only) | ||||
Data Used to Assess Water Quality: | This data is not of sufficient resolution to determine if standards are being achieved: the detection limit is greater than the criteria used to determine if water quality standards are being met.The 4,4' DDT criterion is applicable to Total DDT. Total DDT is the sum of 4,4- and 2,4-isomers of DDT, DDE, and DDD. | ||||
Data Reference: | Data for Various Pollutants in Sweetwater Authority, 2000-2010. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in the water column, sediments or biota at concentration(s) that adversely affect beneficial uses. Pesticides shall not be present at levels which will bioaccumulate in aquatic organisms to levels which are harmful to human health, wildlife or aquatic organisms. | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the San Diego Basin | ||||
Evaluation Guideline: | The Calif. Toxics Rule for other waters is 0.001 ug/L for DDT for freshwater aquatic life. | ||||
Guideline Reference: | Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition | ||||
Spatial Representation: | The sample was collected from Low Flow Barrier at Sweetwater River, Upper (above Sweetwater Reservoir). | ||||
Temporal Representation: | The sample was collected on January 15th 2007. | ||||
Environmental Conditions: | No environmental conditions were reported. | ||||
QAPP Information: | Samples were collected for as part of California Department of Health Services (CADHS) Inorganic Chemicals / Title 22 Primary Inorganic Standards and CADHS General Physical & Minerals / Title 22 Secondary Inorganic Standards because of the water is a source of drinking water. | ||||
QAPP Information Reference(s): | |||||
DECISION ID |
84954 |
Region 9 |
Sweetwater River, Upper (above Sweetwater Reservoir) |
||
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)(2016) |
Revision Status | Original |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.
Two lines of evidence are available in the administrative record to assess this pollutant. Zero of the one sample exceeds the beneficial use criteria. 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 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. Zero of the one sample exceeded the criteria and this sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is fully supported using 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: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 76865 | ||||
Pollutant: | Toxaphene | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | Fixed station physical/chemical monitoring (conventional pollutants only) | ||||
Data Used to Assess Water Quality: | This data is not of sufficient resolution to determine if standards are being achieved: the detection limit is greater than the criteria used to determine if water quality standards are being met. | ||||
Data Reference: | Data for Various Pollutants in Sweetwater Authority, 2000-2010. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The concentrations of toxic substances in the water column, sediments or biota shall not adversely affect beneficial uses. | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the San Diego Basin | ||||
Evaluation Guideline: | The California Toxics Rule (USEPA) for sources of drinking water is 0.00073 ug/L. | ||||
Guideline Reference: | Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition | ||||
Spatial Representation: | The sample was collected from Low Flow Barrier at Sweetwater River, Upper (above Sweetwater Reservoir). | ||||
Temporal Representation: | The sample was collected on January 15th 2007. | ||||
Environmental Conditions: | No environmental conditions were reported. | ||||
QAPP Information: | Samples were collected for as part of California Department of Health Services (CADHS) Inorganic Chemicals / Title 22 Primary Inorganic Standards and CADHS General Physical & Minerals / Title 22 Secondary Inorganic Standards because of the water is a source of drinking water. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 76864 | ||||
Pollutant: | Toxaphene | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | Fixed station physical/chemical monitoring (conventional pollutants only) | ||||
Data Used to Assess Water Quality: | This data is not of sufficient resolution to determine if standards are being achieved: the detection limit is greater than the criteria used to determine if water quality standards are being met. | ||||
Data Reference: | Data for Various Pollutants in Sweetwater Authority, 2000-2010. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The concentrations of toxic substances in the water column, sediments or biota shall not adversely affect beneficial uses. | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the San Diego Basin | ||||
Evaluation Guideline: | The California Toxics Rule (USEPA), 4-day average, total, is 0.0002 ug/L for freshwater aquatic life. | ||||
Guideline Reference: | Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition | ||||
Spatial Representation: | The sample was collected from Low Flow Barrier at Sweetwater River, Upper (above Sweetwater Reservoir). | ||||
Temporal Representation: | The sample was collected on January 15th 2007. | ||||
Environmental Conditions: | No environmental conditions were reported. | ||||
QAPP Information: | Samples were collected for as part of California Department of Health Services (CADHS) Inorganic Chemicals / Title 22 Primary Inorganic Standards and CADHS General Physical & Minerals / Title 22 Secondary Inorganic Standards because of the water is a source of drinking water. | ||||
QAPP Information Reference(s): | |||||
DECISION ID |
77321 |
Region 9 |
Sweetwater River, Upper (above Sweetwater Reservoir) |
||
Pollutant: | Toxicity |
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 | Original |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the section 303(d) list under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.
Two lines of evidence are available in the administrative record to assess this pollutant. One of the five 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. One of the five samples exceed the water quality objective 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. 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. |
|
|||||
LOE ID: | 30898 | ||||
Pollutant: | Toxicity | ||||
LOE Subgroup: | Toxicity | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 4 | ||||
Number of Exceedances: | 1 | ||||
Data and Information Type: | Ambient toxicity testing (chronic) | ||||
Data Used to Assess Water Quality: | Toxicity was observed in the following data from the Storm Water Ambient Monitoring Program
Selenastrum capricornutum- None of four samples showed significant toxicity levels. Ceriodaphnia dubia; One of four samples were toxic. |
||||
Data Reference: | Monitoring data for Region 9 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | From the Basin Plan, all waters shall be free of toxic substances that are toxic to, or that produce detrimental physiological responses in human, plant, animal, or aquatic life (RWQCB, 2007). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the San Diego Basin | ||||
Evaluation Guideline: | According to SWAMP, waters are considered toxic when samples show significant toxicity levels (SWAMP code ¿SL¿) when compared to a negative control. Significant toxicity is determined when statistical tests result in an alpha of less than 5% and percent control values less than the evaluation threshold. | ||||
Guideline Reference: | Monitoring data for Region 9 | ||||
Spatial Representation: | Samples were collected from the monitoring station Sweetwater River 3 on the main stem of the Sweetwater River. | ||||
Temporal Representation: | Samples were taken between June and September 2005 and January and April 2006. | ||||
Environmental Conditions: | |||||
QAPP Information: | Quality control for the chemical analysis portion of this study was conducted in accordance with the California Surface Water Ambient Monitoring Program. | ||||
QAPP Information Reference(s): | 2002. Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. California Department of Fish and Game, Monterey, CA | ||||
|
|||||
LOE ID: | 76867 | ||||
Pollutant: | Toxicity | ||||
LOE Subgroup: | Toxicity | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | TOXICITY TESTING | ||||
Data Used to Assess Water Quality: | One sample was collected to test for toxicity. None of the samples exhibited statistically and biologically significant toxicity. The toxicity tests included survival and reproduction of Ceriodaphnia dubia. | ||||
Data Reference: | Data for Metals, Nutrients, Inorganics, Pesticides and Toxicity from the Stormwater Monitoring Coalition Regional Monitoring of Southern California Coastal Watersheds, 2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in human, plant, animal, or aquatic life. Region 9 Basin Plan. | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the San Diego Basin | ||||
Evaluation Guideline: | Toxicity is defined as a statistically significant effect in the sample exposure compared to the control using EPA-recommended hypothesis testing. The t-test is used to determine if there is a statistically significant decrease in organism response in the sample as compared to the control. Additionally, the biological significance of the sample is evaluated by determining whether the sample response is lower than the evaluation threshold. | ||||
Guideline Reference: | Methods for Measuring the Acute Toxicity of Effluents and Receiving Waters to Freshwater and Marine Organisms, Fifth Edition. EPA-821-R-02-012 | ||||
Guideline Reference: | Short-term Methods for Estimating the Chronic Toxicity of Effluents and Receiving Waters to Freshwater Organisms. Fourth Edition. Office of Water, U.S. Environmental Protection Agency. Washington, D.C. EPA-821-R-02-013 | ||||
Spatial Representation: | The samples were collected from site 909_SMC00282, Sweetwater River, upper. | ||||
Temporal Representation: | The samples were collected in June 2009. | ||||
Environmental Conditions: | |||||
QAPP Information: | This data was collected for the Regional Monitoring Of Southern California's Coastal Watersheds - Stormwater Monitoring Coalition Bioassessment Working Group. CRG Marine Laboratories Quality Assurance Program Document was provided. | ||||
QAPP Information Reference(s): | e-mail clarifying QAPP information | ||||
DECISION ID |
77323 |
Region 9 |
Sweetwater River, Upper (above Sweetwater Reservoir) |
||
Pollutant: | Trifluralin |
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 | Original |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.
One line of evidence is available in the administrative record to assess this pollutant. The one sample does not exceed the evaluation guideline. 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 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. Zero of one sample exceeded the evaluation guideline, and this sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is fully supported using 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: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 76887 | ||||
Pollutant: | Trifluralin | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | Fixed station physical/chemical monitoring (conventional pollutants only) | ||||
Data Used to Assess Water Quality: | The sample did not exceed the water quality objective for Trifluralin, thought to be protective of drinking water. | ||||
Data Reference: | Data for Various Pollutants in Sweetwater Authority, 2000-2010. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The concentrations of toxic substances in the water column, sediments or biota shall not adversely affect beneficial uses. | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the San Diego Basin | ||||
Evaluation Guideline: | The USEPA IRIS cancer risk level is 5 ug/L for drinking water. | ||||
Guideline Reference: | IRIS Database Calculations (summary) | ||||
Spatial Representation: | The sample was collected from Low Flow Barrier at Sweetwater River, Upper (above Sweetwater Reservoir). | ||||
Temporal Representation: | The sample was collected on January 15th 2007. | ||||
Environmental Conditions: | No environmental conditions were reported. | ||||
QAPP Information: | Samples were collected for as part of California Department of Health Services (CADHS) Inorganic Chemicals / Title 22 Primary Inorganic Standards and CADHS General Physical & Minerals / Title 22 Secondary Inorganic Standards because of the water is a source of drinking water. | ||||
QAPP Information Reference(s): | |||||
DECISION ID |
71623 |
Region 9 |
Sweetwater River, Upper (above Sweetwater Reservoir) |
||
Pollutant: | Zinc |
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 | Original |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.
Three lines of evidence are available in the administrative record to assess this pollutant. None of the samples exceed the beneficial use guidelines. 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 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. None of the samples exceeded the guidelines and this sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is fully supported using 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: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 76888 | ||||
Pollutant: | Zinc | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 7 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed County of San Diego DWM data for Sweetwater River, Upper (above Sweetwater Reservoir) to determine beneficial use support and results are as follows: 0 of 7 samples exceed the criterion for Zinc. | ||||
Data Reference: | Data for Metals, Nutrients, Inorganics, Organics, Pathogens, and Pesticides from the County of San Diego, 2003-2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | No individual chemical or combination of chemicals shall be present in concentrations that adversely affect beneficial uses. (Water Quality Control Plan, San Diego Basin). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the San Diego Basin | ||||
Evaluation Guideline: | The California Secondary MCL for zinc is 5.0 mg/L (Title 22 California Code of Regulations). | ||||
Guideline Reference: | Secondary Maximum Contaminant Levels and Compliance. CCR Title 22 section 64449. | ||||
Spatial Representation: | Data for this line of evidence for Sweetwater River, Upper (above Sweetwater Reservoir) was collected at 2 monitoring sites [ Sweetwater River @ Old Bridge, Sweetwater River @ Steele Canyon Road] | ||||
Temporal Representation: | Data was collected 6/11/2003 - 6/3/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The Quality Assurance Project Plan from the Truesdail Laboratories, Rev. 12, Enviromatrix Analytical and Dry Weather Monitoring Program Rev. 8 was followed. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan from the Truesdail Laboratories, Rev. 12, Enviromatrix Analytical and Dry Weather Monitoring Program Rev. 8. | ||||
|
|||||
LOE ID: | 76891 | ||||
Pollutant: | Zinc | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Not Recorded | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 14 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) | ||||
Data Used to Assess Water Quality: | None of the fourteen samples tested for Zinc exceeded the hardness adjusted CTR criteria. | ||||
Data Reference: | Data for Various Pollutants in Sweetwater Authority, 2000-2010. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Inland surface waters, enclosed bays, and estuaries shall not contain toxic pollutants in excess of the numerical objectives applicable to California specified in 40 CFR 131.36 (section 131.36 revised at 57 FR 60848, December 22, 1992). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the San Diego Basin | ||||
Evaluation Guideline: | California Toxics Rule (CTR) lists criterion continuous concentrations to protect aquatic life in freshwater. The criterion in freshwater is hardness dependent for each sample and varies based on the ambient hardness during sampling. Section (b)(1) in CTR contains the hardness dependent formula for the metals criterion. ref2557 | ||||
Guideline Reference: | Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition | ||||
Spatial Representation: | Samples were collected from Low Flow Barrier at approximately 32 43'11.12"N /-116 57'1.71"W and from Sweetwater River Influent at approximately 32 42'14.97"N / -116 57'36.85"W. Both sample sites are part of Sweetwater River, Upper (above Sweetwater Reservoir). | ||||
Temporal Representation: | A sample was collected from Sweetwater River Influent in June of 2006. From 2007-2009, samples were collected from both Sweetwater River Influent and Low Flow Barrier biannually during the months of January and June/July. | ||||
Environmental Conditions: | |||||
QAPP Information: | Samples were collected for as part of California Department of Health Services (CADHS) Inorganic Chemicals / Title 22 Primary Inorganic Standards and CADHS General Physical & Minerals / Title 22 Secondary Inorganic Standards because of the water is a source of drinking water. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 76889 | ||||
Pollutant: | Zinc | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 9 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed County of San Diego DWM data for Sweetwater River, Upper (above Sweetwater Reservoir) to determine beneficial use support and results are as follows: 0 of 9 samples exceed the criterion for Zinc. | ||||
Data Reference: | Data for Metals, Nutrients, Inorganics, Organics, Pathogens, and Pesticides from the County of San Diego, 2003-2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | California Toxics Rule (CTR) lists criterion continuous concentrations to protect aquatic life in freshwater. The criterion in freshwater is hardness dependent for each sample and varies based on the ambient hardness during sampling. Section (b)(1) in CTR contains the hardness dependent formula for the metals criterion. | ||||
Objective/Criterion Reference: | Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for Sweetwater River, Upper (above Sweetwater Reservoir) was collected at 2 monitoring sites [ Sweetwater River @ Old Bridge, Sweetwater River @ Steele Canyon Road] | ||||
Temporal Representation: | Data was collected 6/11/2003 - 6/3/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The Quality Assurance Project Plan from the Truesdail Laboratories, Rev. 12, Enviromatrix Analytical and Dry Weather Monitoring Program Rev. 8 was followed. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan from the Truesdail Laboratories, Rev. 12, Enviromatrix Analytical and Dry Weather Monitoring Program Rev. 8. | ||||
|
|||||
LOE ID: | 76890 | ||||
Pollutant: | Zinc | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
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 County of San Diego Dept. of Public Works data for Sweetwater River, Upper (above Sweetwater Reservoir) to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Zinc. | ||||
Data Reference: | Data for Metals, Nutrients, Inorganics, Pesticides and Toxicity from the Stormwater Monitoring Coalition Regional Monitoring of Southern California Coastal Watersheds, 2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in human, plant, animal, or aquatic life. California Toxics Rule (CTR) lists criterion continuous concentrations (4-day average) to protect aquatic life in freshwater. The criterion in freshwater is hardness dependent for each sample and varies based on the ambient hardness during sampling. Section (b)(1) in CTR contains the hardness dependent formula for the metals criterion. | ||||
Objective/Criterion Reference: | Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for Sweetwater River, Upper (above Sweetwater Reservoir) was collected at 1 monitoring site [ Sweetwater River, upper - 909_SMC00282] | ||||
Temporal Representation: | Data was collected on a single day 6/9/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The Quality Assurance Project Plan from the CRG Marine Laboratories and SMC Workplan was followed. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan from the CRG Marine Laboratories and SMC Workplan. | ||||
DECISION ID |
86849 |
Region 9 |
Sweetwater River, Upper (above Sweetwater Reservoir) |
||
Pollutant: | alpha.-BHC (Benzenehexachloride or alpha-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)(2016) |
Revision Status | Original |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.
One line of evidence is available in the administrative record to assess this pollutant. Zero of the zero samples exceed the criteria. 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 CWA 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. Zero of zero samples exceeded the criteria and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. The number of samples is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. 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: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 77067 | ||||
Pollutant: | alpha.-BHC (Benzenehexachloride or alpha-HCH) | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 0 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | Fixed station physical/chemical monitoring (conventional pollutants only) | ||||
Data Used to Assess Water Quality: | This data is not of sufficient resolution to determine if standards are being achieved: the detection limit is greater than the criteria used to determine if water quality standards are being met. | ||||
Data Reference: | Data for Various Pollutants in Sweetwater Authority, 2000-2010. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in the water column, sediments or biota at concentration(s) that adversely affect beneficial uses. Pesticides shall not be present at levels which will bioaccumulate in aquatic organisms to levels which are harmful to human health, wildlife or aquatic organisms. | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the San Diego Basin | ||||
Evaluation Guideline: | The Calif. Toxics Rule (USEPA) for sources of drinking water for alpha-BHC is 0.0039 ug/L. | ||||
Guideline Reference: | Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition | ||||
Spatial Representation: | The sample was collected from Low Flow Barrier at Sweetwater River, Upper (above Sweetwater Reservoir). | ||||
Temporal Representation: | The sample was collected on January 15th 2007. | ||||
Environmental Conditions: | No environmental conditions were reported. | ||||
QAPP Information: | Samples were collected for as part of California Department of Health Services (CADHS) Inorganic Chemicals / Title 22 Primary Inorganic Standards and CADHS General Physical & Minerals / Title 22 Secondary Inorganic Standards because of the water is a source of drinking water. | ||||
QAPP Information Reference(s): | |||||
DECISION ID |
86898 |
Region 9 |
Sweetwater River, Upper (above Sweetwater Reservoir) |
||
Pollutant: | beta-BHC (Benzenehexachloride or beta-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)(2016) |
Revision Status | Original |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.
One line of evidence is available in the administrative record to assess this pollutant. Zero of the one samples exceed the criteria. 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 CWA 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. Zero of one samples exceeded the criteria and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. The number of samples is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. 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: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
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LOE ID: | 76862 | ||||
Pollutant: | beta-BHC (Benzenehexachloride or beta-HCH) | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | Fixed station physical/chemical monitoring (conventional pollutants only) | ||||
Data Used to Assess Water Quality: | This data is not of sufficient resolution to determine if standards are being achieved: the detection limit is greater than the criteria used to determine if water quality standards are being met. | ||||
Data Reference: | Data for Various Pollutants in Sweetwater Authority, 2000-2010. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in the water column, sediments or biota at concentration(s) that adversely affect beneficial uses. Pesticides shall not be present at levels which will bioaccumulate in aquatic organisms to levels which are harmful to human health, wildlife or aquatic organisms. | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the San Diego Basin | ||||
Evaluation Guideline: | The California Toxics Rule (USEPA) for sources of drinking water is 0.014 ug/L. | ||||
Guideline Reference: | Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition | ||||
Spatial Representation: | The sample was collected from Low Flow Barrier at Sweetwater River, Upper (above Sweetwater Reservoir). | ||||
Temporal Representation: | The sample was collected on January 15th 2007. | ||||
Environmental Conditions: | No environmental conditions were reported. | ||||
QAPP Information: | Samples were collected for as part of California Department of Health Services (CADHS) Inorganic Chemicals / Title 22 Primary Inorganic Standards and CADHS General Physical & Minerals / Title 22 Secondary Inorganic Standards because of the water is a source of drinking water. | ||||
QAPP Information Reference(s): | |||||
DECISION ID |
85559 |
Region 9 |
Sweetwater River, Upper (above Sweetwater Reservoir) |
||
Pollutant: | Aluminum |
Final Listing Decision: | List on 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | List on 303(d) list (TMDL required list)(2016) |
Revision Status | Original |
Sources: | A Source Unknown |
Expected TMDL Completion Date: | 2027 |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.
One line of evidence is available in the administrative record to assess this pollutant. Seven of the 14 samples exceed the criteria. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification in favor of placing this water segment-pollutant combination on the 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. Seven of 14 samples exceed the criteria, and this exceeds the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should be placed on the section 303(d) list because applicable water quality standards are exceeded and a pollutant contributes to or causes the problem. |
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. |
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LOE ID: | 77081 | ||||
Pollutant: | Aluminum | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Not Recorded | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 14 | ||||
Number of Exceedances: | 7 | ||||
Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) | ||||
Data Used to Assess Water Quality: | Seven of fourteen samples tested for aluminum exceeded the numeric criteria of 0.087 mg/L to protect warm freshwater habitat. | ||||
Data Reference: | Data for Various Pollutants in Sweetwater Authority, 2000-2010. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in human, plant, animal, or aquatic life. | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the San Diego Basin | ||||
Evaluation Guideline: | National Recommended Water Quality Criteria Continuous Concentrations are intended protect aquatic organisms from chronic exposures (expressed as 4-day average concentration) in freshwater. The numeric criteria o or aluminum is 0.087 mg/L. | ||||
Guideline Reference: | National Recommended Water Quality Criteria. United States Environmental Protection Agency. Office of Water. Office of Science and Technology | ||||
Spatial Representation: | Samples were collected from Low Flow Barrier at approximately 32 43'11.12"N /-116 57'1.71"W and from Sweetwater River Influent at approximately 32 42'14.97"N / -116 57'36.85"W. Both sample sites are part of Sweetwater River, Upper (above Sweetwater Reservoir). | ||||
Temporal Representation: | A sample was collected from Sweetwater River Influent in June of 2006. From 2007-2009, samples were collected from both Sweetwater River Influent and Low Flow Barrier biannually during the months of January and June/July. | ||||
Environmental Conditions: | |||||
QAPP Information: | Samples were collected for as part of California Department of Health Services (CADHS) Inorganic Chemicals / Title 22 Primary Inorganic Standards and CADHS General Physical & Minerals / Title 22 Secondary Inorganic Standards because of the water is a source of drinking water. | ||||
QAPP Information Reference(s): | |||||
DECISION ID |
100602 |
Region 9 |
Sweetwater River, Upper (above Sweetwater Reservoir) |
||
Pollutant: | Benthic Community Effects |
Final Listing Decision: | List on 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | List on 303(d) list (TMDL required list)(2016) |
Revision Status | Original |
Sources: | A Source Unknown | Hydromodification | Resource Extraction | Unknown Nonpoint Source | Unknown Point Source | Urban Runoff/Storm Sewers |
Expected TMDL Completion Date: | 2025 |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | Benthic Community Effects is being considered for placement on the CWA section 303(d) List under sections 3.9 and 3.1 of the Listing Policy. Under section 3.9, an additional line of evidence associating Benthic Community Effects with a water or sediment concentration of pollutant(s) is necessary to assess listing status.
Based on the readily available data and information, the weight of evidence provides sufficient justification for placing Benthic Community Effects in this water segment on 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. Pursuant to section 3.9 of the Listing Policy, the water exhibits significant degradation in biological populations and/or communities as compared to reference site(s) using the California Stream Condition Index. 4. Pursuant to section 3.9 of the Listing Policy, the water segment has associated pollutant(s) samples that exceed water quality objectives. 5. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are being met. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should be placed on the section 303(d) list because applicable water quality standards are exceeded and a pollutant(s) contributes to or causes the problem. |
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. |
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LOE ID: | 133509 | ||||
Pollutant: | Benthic-Macroinvertebrate Bioassessments | ||||
LOE Subgroup: | Population/Community Degradation | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 2 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | BIOLOGICAL MONITORING | ||||
Data Used to Assess Water Quality: | Data used to generate the SWAMP Bioassessment Scores Map. The one sample collected at 909S05146 produced a CSCI score of 0.99. The one sample collected at 909S06794 produced a CSCI score of 0.97. Therefore, it is not exceeding the water quality objective for the aquatic life beneficial use. | ||||
Data Reference: | CSCI scores downloaded from: https://www.waterboards.ca.gov/water_issues/programs/swamp/bioassessment/csci_scores_map.html | ||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant or animal, or aquatic life. Compliance with this objective will be determined by use of indicator organisms, analysis of species diversity, population density, growth anomalies, bioassays of appropriate duration, or other appropriate methods as specified by the Regional Board. Region 9 Basin Plan. | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the San Diego Basin | ||||
Evaluation Guideline: | The California Stream Condition Index (CSCI) is a biological scoring tool that helps aquatic resource managers translate complex data about benthic macroinvertebrates found living in a stream into an overall measure of stream health. The CSCI score is calculated by comparing the expected condition with actual (observed) results (Rhen, A.C. et al., 2015). CSCI scores range from 0 (highly degraded) to greater than 1 (equivalent to reference). CSCI scoring of biological condition are as follows (per the scientific paper supporting the development of the CSCI scoring tool): greater than or equal to 0.92 = likely intact condition, 0.91 to 0.80 = possibly altered condition, 0.79 to 0.63 = likely altered condition, less than or equal to 0.62 = very likely altered condition. Sites with scores below 0.79 are considered to have exceeded the water quality objective for the aquatic life beneficial use. | ||||
Guideline Reference: | Bioassessment in complex environments: designing an index for consistent meaning in different settings | ||||
Spatial Representation: | Samples were collected at 909S05146 and 909S06794. | ||||
Temporal Representation: | Samples were collected at 909S05146 on 7/10/2012. Samples were collected at 909S06794 on 7/18/2012. | ||||
Environmental Conditions: | |||||
QAPP Information: | Data collected following SWAMP QA protocols. | ||||
QAPP Information Reference(s): | |||||
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LOE ID: | 77090 | ||||
Pollutant: | Selenium | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Not Recorded | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 13 | ||||
Number of Exceedances: | 7 | ||||
Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) | ||||
Data Used to Assess Water Quality: | Seven of the thirteen samples tested for Selenium exceeded the CTR criteria of 0.005 mg/L. | ||||
Data Reference: | Data for Various Pollutants in Sweetwater Authority, 2000-2010. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Inland surface waters, enclosed bays, and estuaries shall not contain toxic pollutants in excess of the numerical objectives applicable to California specified in 40 CFR 131.36 (section 131.36 revised at 57 FR 60848, December 22, 1992). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the San Diego Basin | ||||
Evaluation Guideline: | California Toxics Rule (CTR) lists criterion continuous concentrations to protect aquatic life in freshwater. The CTR criteria for selenium is 0.005 mg/L. ref2557 | ||||
Guideline Reference: | Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition | ||||
Spatial Representation: | Samples were collected from Low Flow Barrier at approximately 32 43'11.12"N /-116 57'1.71"W and from Sweetwater River Influent at approximately 32 42'14.97"N / -116 57'36.85"W. Both sample sites are part of Sweetwater River, Upper (above Sweetwater Reservoir). | ||||
Temporal Representation: | A sample was collected from Sweetwater River Influent in June of 2006. From 2007-2009, samples were collected from both Sweetwater River Influent and Low Flow Barrier biannually during the months of January and June/July. | ||||
Environmental Conditions: | |||||
QAPP Information: | Samples were collected for as part of California Department of Health Services (CADHS) Inorganic Chemicals / Title 22 Primary Inorganic Standards and CADHS General Physical & Minerals / Title 22 Secondary Inorganic Standards because of the water is a source of drinking water. | ||||
QAPP Information Reference(s): | |||||
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LOE ID: | 30896 | ||||
Pollutant: | Total Nitrogen as N | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 4 | ||||
Number of Exceedances: | 2 | ||||
Data and Information Type: | Fixed station physical/chemical monitoring (conventional pollutants only) | ||||
Data Used to Assess Water Quality: | Two of the four samples collected exceed the water quality objective according to results in the Surface Water Ambient Monitoring Program Report, 2007. Samples were collected on June 1 and September 7, 2005, January 31 and April 11, 2006. | ||||
Data Reference: | Monitoring data for Region 9 | ||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | Water bodies shall not contain biostimulatory substances in concentrations that promote aquatic growth to the extent that such growths cause nuisance or adversely affect beneficial uses. (RWQCB, 2007)
A desired goal in order to prevent plant nuisance in streams and other flowing waters appears to be 0.1 mg/L total phosphorus, P. These values are not to be exceeded more than 10% of the time unless studies of the specific water body in question clearly show that water quality objective changes are permissible and changes are approved by the Regional Board. Analogous threshold values have not been set for nitrogen compounds; however, natural ratios of nitrogen to phosphorus are to be determined by surveillance and monitoring and upheld. If data are lacking, a ratio of N:P = 10:1, on a weight to weight basis shall be used. (RWQCB, 2007) |
||||
Objective/Criterion Reference: | Water Quality Control Plan for the San Diego Basin | ||||
Evaluation Guideline: | |||||
Guideline Reference: | Water Quality Control Plan for the San Diego Basin | ||||
Spatial Representation: | Samples were collected from the monitoring station Sweetwater River 3 (station id: 909SSWR03 lat/long: 32.97877/-117.23506), located on the main stem of the Sweetwater River. | ||||
Temporal Representation: | Samples were collected on June 1 and September 7, 2005, January 31 and April 11, 2006. | ||||
Environmental Conditions: | The above sampling events occurred during dry weather declining base flow, dry weather minimum base flow, wet weather between storm events, and wet weather high base flow, respectively. | ||||
QAPP Information: | Quality control for the chemical analysis portion of this study was conducted in accordance with the California's Surface Water Ambient Monitoring Program. | ||||
QAPP Information Reference(s): | 2002. Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. California Department of Fish and Game, Monterey, CA | ||||
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LOE ID: | 77081 | ||||
Pollutant: | Aluminum | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Not Recorded | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 14 | ||||
Number of Exceedances: | 7 | ||||
Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) | ||||
Data Used to Assess Water Quality: | Seven of fourteen samples tested for aluminum exceeded the numeric criteria of 0.087 mg/L to protect warm freshwater habitat. | ||||
Data Reference: | Data for Various Pollutants in Sweetwater Authority, 2000-2010. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in human, plant, animal, or aquatic life. | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the San Diego Basin | ||||
Evaluation Guideline: | National Recommended Water Quality Criteria Continuous Concentrations are intended protect aquatic organisms from chronic exposures (expressed as 4-day average concentration) in freshwater. The numeric criteria o or aluminum is 0.087 mg/L. | ||||
Guideline Reference: | National Recommended Water Quality Criteria. United States Environmental Protection Agency. Office of Water. Office of Science and Technology | ||||
Spatial Representation: | Samples were collected from Low Flow Barrier at approximately 32 43'11.12"N /-116 57'1.71"W and from Sweetwater River Influent at approximately 32 42'14.97"N / -116 57'36.85"W. Both sample sites are part of Sweetwater River, Upper (above Sweetwater Reservoir). | ||||
Temporal Representation: | A sample was collected from Sweetwater River Influent in June of 2006. From 2007-2009, samples were collected from both Sweetwater River Influent and Low Flow Barrier biannually during the months of January and June/July. | ||||
Environmental Conditions: | |||||
QAPP Information: | Samples were collected for as part of California Department of Health Services (CADHS) Inorganic Chemicals / Title 22 Primary Inorganic Standards and CADHS General Physical & Minerals / Title 22 Secondary Inorganic Standards because of the water is a source of drinking water. | ||||
QAPP Information Reference(s): | |||||
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LOE ID: | 76859 | ||||
Pollutant: | Benthic-Macroinvertebrate Bioassessments | ||||
LOE Subgroup: | Population/Community Degradation | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | Benthic macroinvertebrate surveys | ||||
Data Used to Assess Water Quality: | The one sample collected had an IBI score above 40. The score was 52.9. SMC bioassessment | ||||
Data Reference: | Bioassessment Data for Various Pollutants from Stormwater Monitoring Coalition Regional Monitoring of Southern California Coastal Watersheds, 2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant or animal, or aquatic life. Compliance with this objective will be determined by use of indicator organisms, analysis of species diversity, population density, growth anomalies, bioassays of appropriate duration or other appropriate methods as specified by the State or Regional Board. Region 9 Basin Plan. | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the San Diego Basin | ||||
Evaluation Guideline: | The IBI is a multi-metric assessment that employs biological metrics that respond to a habitat or water quality impairment. Each of the biological metrics measured at a site are converted to an IBI score then summed. These cumulative scores are then ranked. For the Southern California IBI, sites with scores below 40 are considered to have impaired conditions. | ||||
Guideline Reference: | Development of a Benthic Index of Biotic Integrity (B-IBI) for Wadeable Streams in Northern Coastal California and its Application to Regional 305(b) Assessment | ||||
Spatial Representation: | The sample was collected at 909_SMC00282, Sweetwater River, upper. | ||||
Temporal Representation: | The sample was collected in June 2009. | ||||
Environmental Conditions: | |||||
QAPP Information: | The data was collected under the Southern California Regional Watershed Monitoring Program Bioassessment Quality Assurance Project Plan, June 25, 2009. | ||||
QAPP Information Reference(s): | e-mail clarifying QAPP information | ||||
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LOE ID: | 79675 | ||||
Pollutant: | Benthic-Macroinvertebrate Bioassessments | ||||
LOE Subgroup: | Population/Community Degradation | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | Benthic macroinvertebrate surveys | ||||
Data Used to Assess Water Quality: | One sample was collected from one station. The CSCI score was above the 0.79 threshold, and therefore the site is not exceeding the water quality objective for the aquatic life beneficial use. | ||||
Data Reference: | Bioassessment Data for Various Pollutants from Stormwater Monitoring Coalition Regional Monitoring of Southern California Coastal Watersheds, 2009. | ||||
Region 9 CSCI Scores & Water Body Information | |||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant or animal, or aquatic life. Compliance with this objective will be determined by use of indicator organisms, analysis of species diversity, population density, growth anomalies, bioassays of appropriate duration, or other appropriate methods as specified by the Regional Board. Region 9 Basin Plan. | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the San Diego Basin | ||||
Evaluation Guideline: | The California Stream Condition Index (CSCI) is a biological scoring tool that helps aquatic resource managers translate complex data about benthic macroinvertebrates found living in a stream into an overall measure of stream health. The CSCI score is calculated by comparing the expected condition with actual (observed) results (Rhen, A.C. et al., 2015). CSCI scores range from 0 (highly degraded) to greater than 1 (equivalent to reference). CSCI scoring of biological condition are as follows (per the scientific paper supporting the development of the CSCI scoring tool): greater than or equal to 0.92 = likely intact condition, 0.91 to 0.80 = possibly altered condition, 0.79 to 0.63 = likely altered condition, less than or equal to 0.62 = very likely altered condition. Sites with scores below 0.79 are considered to have exceeded the water quality objective for the aquatic life beneficial use. | ||||
Guideline Reference: | Bioassessment in complex environments: designing an index for consistent meaning in different settings | ||||
Spatial Representation: | The sample was collected at 909_SMC00282, Sweetwater River, upper. | ||||
Temporal Representation: | The sample was collected in June 2009. | ||||
Environmental Conditions: | |||||
QAPP Information: | The data was collected under the Southern California Regional Watershed Monitoring Program Bioassessment Quality Assurance Project Plan, June 25, 2009. | ||||
QAPP Information Reference(s): | e-mail clarifying QAPP information | ||||
QAPP Information Reference(s): | Bioassessment Data for Various Pollutants from Stormwater Monitoring Coalition Regional Monitoring of Southern California Coastal Watersheds, 2009. | ||||
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LOE ID: | 72768 | ||||
Pollutant: | Benthic-Macroinvertebrate Bioassessments | ||||
LOE Subgroup: | Population/Community Degradation | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 9 | ||||
Number of Exceedances: | 9 | ||||
Data and Information Type: | Benthic macroinvertebrate surveys | ||||
Data Used to Assess Water Quality: | Nine of the nine samples collected had IBI scores below 40. tr11c NPDES bioassessment | ||||
Data Reference: | Data for Various Pollutants from the County of San Diego Copermittees Receiving Waters Monitoring and Reporting Program, 2001-2008. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant or animal, or aquatic life. Compliance with this objective will be determined by use of indicator organisms, analysis of species diversity, population density, growth anomalies, bioassays of appropriate duration or other appropriate methods as specified by the State or Regional Board. Region 9 Basin Plan. | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the San Diego Basin | ||||
Evaluation Guideline: | The IBI is a multi-metric assessment that employs biological metrics that respond to a habitat or water quality impairment. Each of the biological metrics measured at a site are converted to an IBI score then summed. These cumulative scores are then ranked. For the Southern California IBI, sites with scores below 40 are considered to have impaired conditions. | ||||
Guideline Reference: | Development of a Benthic Index of Biotic Integrity (B-IBI) for Wadeable Streams in Northern Coastal California and its Application to Regional 305(b) Assessment | ||||
Spatial Representation: | The samples were collected at stations SR-94 and SR-TWAS-1 Sweetwater River. | ||||
Temporal Representation: | The samples were collected twice a year in May and October from 2002 to 2010. | ||||
Environmental Conditions: | |||||
QAPP Information: | The data was collected under the Southern California Regional Watershed Monitoring Program Bioassessment Quality Assurance Project Plan, June 25, 2009. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan for SWAMP Bioassessment and Freshwater Bioassessment. | ||||
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LOE ID: | 79676 | ||||
Pollutant: | Benthic-Macroinvertebrate Bioassessments | ||||
LOE Subgroup: | Population/Community Degradation | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 8 | ||||
Number of Exceedances: | 4 | ||||
Data and Information Type: | Benthic macroinvertebrate surveys | ||||
Data Used to Assess Water Quality: | A total of nine samples were taken at one station on the Sweetwater River. Four of the nine samples were below the 0.79 threshold, and therefore exceeding the water quality objective for the aquatic life beneficial use. One sample was not scored due to low organism counts | ||||
Data Reference: | Data for Various Pollutants from the County of San Diego Copermittees Receiving Waters Monitoring and Reporting Program, 2001-2008. | ||||
Region 9 CSCI Scores & Water Body Information | |||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant or animal, or aquatic life. Compliance with this objective will be determined by use of indicator organisms, analysis of species diversity, population density, growth anomalies, bioassays of appropriate duration, or other appropriate methods as specified by the Regional Board. Region 9 Basin Plan. | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the San Diego Basin | ||||
Evaluation Guideline: | The California Stream Condition Index (CSCI) is a biological scoring tool that helps aquatic resource managers translate complex data about benthic macroinvertebrates found living in a stream into an overall measure of stream health. The CSCI score is calculated by comparing the expected condition with actual (observed) results (Rhen, A.C. et al., 2015). CSCI scores range from 0 (highly degraded) to greater than 1 (equivalent to reference). CSCI scoring of biological condition are as follows (per the scientific paper supporting the development of the CSCI scoring tool): greater than or equal to 0.92 = likely intact condition, 0.91 to 0.80 = possibly altered condition, 0.79 to 0.63 = likely altered condition, less than or equal to 0.62 = very likely altered condition. Sites with scores below 0.79 are considered to have exceeded the water quality objective for the aquatic life beneficial use. | ||||
Guideline Reference: | Bioassessment in complex environments: designing an index for consistent meaning in different settings | ||||
Spatial Representation: | The samples were collected at station SR-94 (SR-TWAS-1 is co-located) | ||||
Temporal Representation: | The samples were collected from 2002 to 2009. | ||||
Environmental Conditions: | |||||
QAPP Information: | The data was collected under the County of San Diego NPDES MS4 Copermittees Receiving Waters Monitoring and Reporting Program. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan for SWAMP Bioassessment and Freshwater Bioassessment. | ||||
QAPP Information Reference(s): | Data for Various Pollutants from the County of San Diego Copermittees Receiving Waters Monitoring and Reporting Program, 2001-2008. | ||||
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LOE ID: | 30893 | ||||
Pollutant: | Selenium | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 4 | ||||
Number of Exceedances: | 1 | ||||
Data and Information Type: | Fixed station physical/chemical monitoring (conventional pollutants only) | ||||
Data Used to Assess Water Quality: | One of the four samples collected at Sweetwater River exceed the water quality objective of 5 µg/L for dissolved selenium according to results in California Surface Water Ambient Monitoring Program Report, 2007. Samples for Sweetwater River were collected in June 2005, September 2005, January 2006, and April 2006. | ||||
Data Reference: | Monitoring data for Region 9 | ||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | CTR Freshwater Chronic (CCC) 5 ug/L. (U.S. EPA, 2000). | ||||
Objective/Criterion Reference: | Water Quality Standards; Establishment of Numeric Criteria for Priority Toxic Pollutants for the State of California; Rule. 40 CFR Part 131. U.S. Environmental Protection Agency, Region IX, Water Division, San Francisco, CA | ||||
Evaluation Guideline: | |||||
Guideline Reference: | Water Quality Control Plan for the San Diego Basin | ||||
Spatial Representation: | Water samples were collected at Sweetwater River stations 909SSWR03. | ||||
Temporal Representation: | Samples for Sweetwater River were collected in May 2005, September 2005, January 2006, and April 2006. | ||||
Environmental Conditions: | |||||
QAPP Information: | Quality control for the chemical analysis portion of this study was conducted in accordance with the California Surface Water Ambient Monitoring Program. | ||||
QAPP Information Reference(s): | |||||
DECISION ID |
85439 |
Region 9 |
Sweetwater River, Upper (above Sweetwater Reservoir) |
||
Pollutant: | Indicator Bacteria |
Final Listing Decision: | List on 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | List on 303(d) list (TMDL required list)(2016) |
Revision Status | Original |
Sources: | A Source Unknown |
Expected TMDL Completion Date: | 2025 |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.2 of the Listing Policy. Under section 3.2 a single line of evidence is necessary to assess listing status.
Three lines of evidence are available in the administrative record to assess this pollutant. Data from 2003 to 2009 show that 8 of 11 single samples exceed the water quality objective for enterococcus of 61/100ml for the protection of REC-1. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification in favor of placing this water segment-pollutant combination on the 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. Data from 2003 to 2009 show that 8 of 11 single samples exceed the water quality objective for enterococcus of 61/100ml for the protection of REC-1 and this exceeds the allowable frequency listed in Table 3.2 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 be placed on the section 303(d) list because applicable water quality standards are exceeded and a pollutant contributes to or causes the problem. |
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. |
|
|||||
LOE ID: | 77007 | ||||
Pollutant: | Fecal Coliform | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Water Contact Recreation | ||||
Number of Samples: | 11 | ||||
Number of Exceedances: | 3 | ||||
Data and Information Type: | PATHOGEN MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed County of San Diego data for Sweetwater River, Upper (above Sweetwater Reservoir) to determine beneficial use support and results are as follows: 3 of 11 samples exceed the criterion for Coliform, Fecal. | ||||
Data Reference: | Data for Metals, Nutrients, Inorganics, Organics, Pathogens, and Pesticides from the County of San Diego, 2003-2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | In waters designated for water contact recreation (REC I), the fecal coliform concentration shall not exceed 400 MPN/100 ml. | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the San Diego Basin | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for Sweetwater River, Upper (above Sweetwater Reservoir) was collected at 2 monitoring sites [ Sweetwater River @ Old Bridge, Sweetwater River @ Steele Canyon Road] | ||||
Temporal Representation: | Data was collected over the time period 6/11/2003-6/3/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The Quality Assurance Project Plan from the Truesdail Laboratories, Rev. 12, Enviromatrix Analytical and Dry Weather Monitoring Program Rev. 8 was followed. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan from the Truesdail Laboratories, Rev. 12, Enviromatrix Analytical and Dry Weather Monitoring Program Rev. 8. | ||||
|
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LOE ID: | 77105 | ||||
Pollutant: | Total Coliform | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Water Contact Recreation | ||||
Number of Samples: | 11 | ||||
Number of Exceedances: | 4 | ||||
Data and Information Type: | PATHOGEN MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed County of San Diego data for Sweetwater River, Upper (above Sweetwater Reservoir) to determine beneficial use support and results are as follows: 4 of 11 samples exceed the criterion for Coliform, Total. | ||||
Data Reference: | Data for Metals, Nutrients, Inorganics, Organics, Pathogens, and Pesticides from the County of San Diego, 2003-2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxicsubstances in concentrations which are toxic to,or which produce detrimental physiologicalresponses in human, plant, animal, or indigenousaquatic life (Basin Plan). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the San Diego Basin | ||||
Evaluation Guideline: | In waters designated for water contact recreation (REC I), the total coliform concentration shall not exceed 10000 MPN/100 ml (CDPH 2006). | ||||
Guideline Reference: | Draft Guidance for Fresh Water Beaches. Last Update: May 8, 2006. Initial Draft: November 1997. California Department of Public Health. | ||||
Spatial Representation: | Data for this line of evidence for Sweetwater River, Upper (above Sweetwater Reservoir) was collected at 2 monitoring sites [ Sweetwater River @ Old Bridge, Sweetwater River @ Steele Canyon Road] | ||||
Temporal Representation: | Data was collected over the time period 6/11/2003-6/3/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The Quality Assurance Project Plan from the Truesdail Laboratories, Rev. 12, Enviromatrix Analytical and Dry Weather Monitoring Program Rev. 8 was followed. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan from the Truesdail Laboratories, Rev. 12, Enviromatrix Analytical and Dry Weather Monitoring Program Rev. 8. | ||||
|
|||||
LOE ID: | 77006 | ||||
Pollutant: | Enterococcus | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Water Contact Recreation | ||||
Number of Samples: | 11 | ||||
Number of Exceedances: | 8 | ||||
Data and Information Type: | PATHOGEN MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed County of San Diego data for Sweetwater River, Upper (above Sweetwater Reservoir) to determine beneficial use support and results are as follows: 8 of 11 samples exceed the criterion for Enterococci. | ||||
Data Reference: | Data for Metals, Nutrients, Inorganics, Organics, Pathogens, and Pesticides from the County of San Diego, 2003-2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Samples shall not exceed 61 organisms per 100 ml for enterococcus in waters designated for REC I beneficial use (Water Quality Control Plan for the San Diego Basin). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the San Diego Basin | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for Sweetwater River, Upper (above Sweetwater Reservoir) was collected at 2 monitoring sites [ Sweetwater River @ Old Bridge, Sweetwater River @ Steele Canyon Road] | ||||
Temporal Representation: | Data was collected over the time period 6/11/2003-6/3/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The Quality Assurance Project Plan from the Truesdail Laboratories, Rev. 12, Enviromatrix Analytical and Dry Weather Monitoring Program Rev. 8 was followed. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan from the Truesdail Laboratories, Rev. 12, Enviromatrix Analytical and Dry Weather Monitoring Program Rev. 8. | ||||
DECISION ID |
77667 |
Region 9 |
Sweetwater River, Upper (above Sweetwater Reservoir) |
||
Pollutant: | Selenium |
Final Listing Decision: | List on 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | List on 303(d) list (TMDL required list)(2016) |
Revision Status | Original |
Sources: | A Source Unknown |
Expected TMDL Completion Date: | 2027 |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.
Two lines of evidence are available in the administrative record to assess this pollutant. Eight of the 17 samples exceed the criteria. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification in favor of placing this water segment-pollutant combination on the 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. Eight of 17 samples exceed the criteria, and this exceeds the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should be placed on the section 303(d) list because applicable water quality standards are exceeded and a pollutant contributes to or causes the problem. |
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. |
|
|||||
LOE ID: | 77090 | ||||
Pollutant: | Selenium | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Not Recorded | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 13 | ||||
Number of Exceedances: | 7 | ||||
Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) | ||||
Data Used to Assess Water Quality: | Seven of the thirteen samples tested for Selenium exceeded the CTR criteria of 0.005 mg/L. | ||||
Data Reference: | Data for Various Pollutants in Sweetwater Authority, 2000-2010. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Inland surface waters, enclosed bays, and estuaries shall not contain toxic pollutants in excess of the numerical objectives applicable to California specified in 40 CFR 131.36 (section 131.36 revised at 57 FR 60848, December 22, 1992). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the San Diego Basin | ||||
Evaluation Guideline: | California Toxics Rule (CTR) lists criterion continuous concentrations to protect aquatic life in freshwater. The CTR criteria for selenium is 0.005 mg/L. ref2557 | ||||
Guideline Reference: | Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition | ||||
Spatial Representation: | Samples were collected from Low Flow Barrier at approximately 32 43'11.12"N /-116 57'1.71"W and from Sweetwater River Influent at approximately 32 42'14.97"N / -116 57'36.85"W. Both sample sites are part of Sweetwater River, Upper (above Sweetwater Reservoir). | ||||
Temporal Representation: | A sample was collected from Sweetwater River Influent in June of 2006. From 2007-2009, samples were collected from both Sweetwater River Influent and Low Flow Barrier biannually during the months of January and June/July. | ||||
Environmental Conditions: | |||||
QAPP Information: | Samples were collected for as part of California Department of Health Services (CADHS) Inorganic Chemicals / Title 22 Primary Inorganic Standards and CADHS General Physical & Minerals / Title 22 Secondary Inorganic Standards because of the water is a source of drinking water. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 30893 | ||||
Pollutant: | Selenium | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 4 | ||||
Number of Exceedances: | 1 | ||||
Data and Information Type: | Fixed station physical/chemical monitoring (conventional pollutants only) | ||||
Data Used to Assess Water Quality: | One of the four samples collected at Sweetwater River exceed the water quality objective of 5 µg/L for dissolved selenium according to results in California Surface Water Ambient Monitoring Program Report, 2007. Samples for Sweetwater River were collected in June 2005, September 2005, January 2006, and April 2006. | ||||
Data Reference: | Monitoring data for Region 9 | ||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | CTR Freshwater Chronic (CCC) 5 ug/L. (U.S. EPA, 2000). | ||||
Objective/Criterion Reference: | Water Quality Standards; Establishment of Numeric Criteria for Priority Toxic Pollutants for the State of California; Rule. 40 CFR Part 131. U.S. Environmental Protection Agency, Region IX, Water Division, San Francisco, CA | ||||
Evaluation Guideline: | |||||
Guideline Reference: | Water Quality Control Plan for the San Diego Basin | ||||
Spatial Representation: | Water samples were collected at Sweetwater River stations 909SSWR03. | ||||
Temporal Representation: | Samples for Sweetwater River were collected in May 2005, September 2005, January 2006, and April 2006. | ||||
Environmental Conditions: | |||||
QAPP Information: | Quality control for the chemical analysis portion of this study was conducted in accordance with the California Surface Water Ambient Monitoring Program. | ||||
QAPP Information Reference(s): | |||||
DECISION ID |
87262 |
Region 9 |
Sweetwater River, Upper (above Sweetwater Reservoir) |
||
Pollutant: | Total Nitrogen as N |
Final Listing Decision: | List on 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | List on 303(d) list (TMDL required list)(2016) |
Revision Status | Original |
Sources: | A Source Unknown |
Expected TMDL Completion Date: | 2027 |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.
One line of evidence are available in the administrative record to assess this pollutant. Two of four samples exceed the water quality objective for stimulatory substances. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification in favor of placing this water segment-pollutant combination on the 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. Two of four samples exceed the water quality objective for stimulatory substances and this exceeds the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should be placed on the section 303(d) list because applicable water quality standards are exceeded and a pollutant contributes to or causes the problem. |
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. |
|
|||||
LOE ID: | 30896 | ||||
Pollutant: | Total Nitrogen as N | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 4 | ||||
Number of Exceedances: | 2 | ||||
Data and Information Type: | Fixed station physical/chemical monitoring (conventional pollutants only) | ||||
Data Used to Assess Water Quality: | Two of the four samples collected exceed the water quality objective according to results in the Surface Water Ambient Monitoring Program Report, 2007. Samples were collected on June 1 and September 7, 2005, January 31 and April 11, 2006. | ||||
Data Reference: | Monitoring data for Region 9 | ||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | Water bodies shall not contain biostimulatory substances in concentrations that promote aquatic growth to the extent that such growths cause nuisance or adversely affect beneficial uses. (RWQCB, 2007)
A desired goal in order to prevent plant nuisance in streams and other flowing waters appears to be 0.1 mg/L total phosphorus, P. These values are not to be exceeded more than 10% of the time unless studies of the specific water body in question clearly show that water quality objective changes are permissible and changes are approved by the Regional Board. Analogous threshold values have not been set for nitrogen compounds; however, natural ratios of nitrogen to phosphorus are to be determined by surveillance and monitoring and upheld. If data are lacking, a ratio of N:P = 10:1, on a weight to weight basis shall be used. (RWQCB, 2007) |
||||
Objective/Criterion Reference: | Water Quality Control Plan for the San Diego Basin | ||||
Evaluation Guideline: | |||||
Guideline Reference: | Water Quality Control Plan for the San Diego Basin | ||||
Spatial Representation: | Samples were collected from the monitoring station Sweetwater River 3 (station id: 909SSWR03 lat/long: 32.97877/-117.23506), located on the main stem of the Sweetwater River. | ||||
Temporal Representation: | Samples were collected on June 1 and September 7, 2005, January 31 and April 11, 2006. | ||||
Environmental Conditions: | The above sampling events occurred during dry weather declining base flow, dry weather minimum base flow, wet weather between storm events, and wet weather high base flow, respectively. | ||||
QAPP Information: | Quality control for the chemical analysis portion of this study was conducted in accordance with the California's Surface Water Ambient Monitoring Program. | ||||
QAPP Information Reference(s): | 2002. Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. California Department of Fish and Game, Monterey, CA | ||||