Water Body Name: | Merced River, Lower (McSwain Reservoir to San Joaquin River) |
Water Body ID: | CAR5357000019980817154245 |
Water Body Type: | River & Stream |
DECISION ID |
92178 |
Region 5 |
Merced River, Lower (McSwain Reservoir to San Joaquin River) |
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Pollutant: | Chlorpyrifos |
Final Listing Decision: | Delist from 303(d) list (being addressed by action other than TMDL) |
Last Listing Cycle's Final Listing Decision: | Do Not Delist from 303(d) list (being addressed with action other than TMDL)(2016) |
Revision Status | Revised |
Reason for Delisting: | Applicable WQS attained; reason for recovery unspecified |
Expected Attainment Date: | 2026 |
Implementation Action Other than TMDL: | This water body segment-pollutant combination is being addressed through Basin Plan requirements established under CRWQCB-CVR resolution R5-20140041, and implemented through Board established Waste Discharge Requirements for agricultural discharges. The sources of chlorpyrifos to this segment have been identified as offsite movement of chlorpyrifos from chlorpyrifos applications by the agricultural dischargers regulated by the CRWQCB-CVR WDRs. The Basin Plan identifies numeric water quality objectives for diazinon and chlorpyrifos. The Basin Plan and WDRs require growers to implement management practices through the development and implementation of water quality management plans to meet water quality objectives for chlorpyrifos as soon as possible but no longer than ten years from the date of approval of the Basin Plan Amendment. These management plans are required to be developed and implemented within one year of the Basin Plan Amendment approval. Agricultural management practices to be implemented may include pest management practices, pesticide application practices, vegetation management practices and water management practices, all of which are effective in reducing offsite movement of chlorpyrifos into surface water. The Basin Plan and the Monitoring and Reporting programs in the WDRs require monitoring to determine if adequate reductions are being attained. The Basin Plan and WDRs require management practices to be iteratively improved through updates of the management plans until the water quality objectives are achieved. |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for removal from the CWA section 303(d) List under section 4.1 of the Listing Policy. Under this section a single line of evidence is necessary to assess listing status.
Fourteen lines of evidence are available in the administrative record to assess this pollutant. Eight of 204 samples exceeded the chlorpyrifos criterion. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification for removing this water segment-pollutant combination from the 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. A water quality management plan for chlorpyrifos in the Merced River was approved by the Central Valley Water Board Irrigated Lands Regulatory Program in 2008. Management practices were implemented by growers to address chlorpyrifos exceedances. The management plan has recently been reinstated due to exceedences. However, this does not indicate the waterbody is impaired. 4. The Merced River was originally identified as impaired by chlorpyrifos in 1998. 5. Eight of 204 samples exceeded the chlorpyrifos criterion and zero of four sediment samples exceeded the criterion this does not exceed the allowable frequency listed in Table 4.1 of the Listing Policy. 6. Pursuant to section 4.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should be removed from the section 303(d) list because applicable water quality standards for the pollutant 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. |
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LOE ID: | 4476 | ||||
Pollutant: | Chlorpyrifos | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Not Recorded | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 0 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | Not Specified | ||||
Data Used to Assess Water Quality: | Unspecified--This LOE is a placeholder to support a 303(d) listing decision made prior to 2006. | ||||
Data Reference: | Placeholder reference pre-2006 303(d) | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Unspecified | ||||
Objective/Criterion Reference: | Placeholder reference pre-2006 303(d) | ||||
Evaluation Guideline: | Unspecified | ||||
Guideline Reference: | Placeholder reference pre-2006 303(d) | ||||
Spatial Representation: | Unspecified | ||||
Temporal Representation: | Unspecified | ||||
Environmental Conditions: | Unspecified | ||||
QAPP Information: | Unspecified | ||||
QAPP Information Reference(s): | |||||
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LOE ID: | 22257 | ||||
Pollutant: | Chlorpyrifos | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Aquatic Life Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 109 | ||||
Number of Exceedances: | 4 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | 140 water samples were collected from Merced River from January 2000 through June 2005, representing 109 4-day average concentrations and 140 1-hour average concentrations. 4 of 109 4-day average concentrations exceeded the 4-day maximum concentration guideline of 0.015 ug/L.1 of 140 1-hour average concentrations exceeded the maximum 1-hour concentration of 0.025 ug/L. | ||||
Data Reference: | Surface Water database (SWDB) for Central Valley waterbodies, 2000-2005 | ||||
Correspondence between the Department of Pesticide Regulation and Central Valley Regional Water Quality Control Board regarding water quality data for waterbodies in the Central Valley | |||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses (CVRWQCB, 2007).All waters shall be maintained free of toxic substances in concentrations that produce detrimental physiological responses in human, plant, animal, or aquatic life (CVRWQCB, 2007). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Objective/Criterion 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 | ||||
Evaluation Guideline: | California Department of Fish and Game Hazard Assessment Criteria - 0.015 ug/L 4-day average and 0.025 ug/L 1-hour average (Siepmann and Finlayson, 2000, with minor corrections to significant figures as described in Beaulaurier et al., 2005). | ||||
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 | ||||
Spatial Representation: | Samples were collected at variable intervals from Merced River at River Road Bridge near Newman. | ||||
Temporal Representation: | Samples were collected weekly between January 2000 and June 2005. | ||||
Environmental Conditions: | |||||
QAPP Information: | Data quality: Good. Minimum requirements for the CDPR Surface Water Database are: Name of the sampling agency or organization, Date that each sample was collected, Date of each sample analysis, County where samples were taken, Detailed sampling location information (including latitude and longitude or township/range/section if available), detailed map or description of each sampling site (i.e., address, cross roads, etc.), Name or description of water body sampled, Name of the active ingredient analyzed for; concentration detected (with unit of measurement), and limit of quantitation, Description of analytical QA/QC plan, or statement that no formal plan exists. Additional optional requirements are included on DPR's webpage at http://www.cdpr.ca.gov/docs/emon/surfwtr/caps/req.htm | ||||
QAPP Information Reference(s): | Standard Operating Procedure for Conducting Surface Water Monitoring for Pesticides | ||||
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LOE ID: | 132657 | ||||
Pollutant: | Chlorpyrifos | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 37 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed East San Joaquin Water Quality Coalition data for Merced River, Lower (McSwain Reservoir to San Joaquin River) to determine beneficial use support and results are as follows: 0 of 37 samples exceeded the water quality standard for Chlorpyrifos. | ||||
Data Reference: | Water Quality Assessment Data for the 2018 solicitation cycle submitted through CEDEN for East San Joaquin Water Quality Coalition | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | The freshwater criterion continuous concentration [CCC] to protect aquatic organisms from chronic exposure 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 | ||||
Spatial Representation: | The samples were collected at 1 monitoring site(s) (535XMRSFD) | ||||
Temporal Representation: | The samples were collected between the dates of 2011-01-18 and 2015-09-08 | ||||
Environmental Conditions: | |||||
QAPP Information: | Quality Assurance Project Plan for Monitoring by the East San Joaquin Water Quality CoalitionĀ | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan for Monitoring by the East San Joaquin Water Quality Coalition | ||||
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LOE ID: | 22243 | ||||
Pollutant: | Chlorpyrifos | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Aquatic Life 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: | 13 water samples were collected from Merced River between March and August 2004, representing 9 4-day average concentrations and 13 1-hour average concentrations.0 of 9 available 4-day average concentrations exceeded the 4-day maximum concentration guideline of 0.015 ug/L. 0 of 13 available 1-hour average concentrations exceeded the maximum 1-hour concentration of 0.025 ug/L. | ||||
Data Reference: | Zipped file of Central Valley Waterways Pesticide TMDL monitoring data spreadsheets and reports | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses (CVRWQCB, 2007).All waters shall be maintained free of toxic substances in concentrations that produce detrimental physiological responses in human, plant, animal, or aquatic life (CVRWQCB, 2007). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | California Department of Fish and Game Hazard Assessment Criteria - 0.015 ug/L 4-day average and 0.025 ug/L 1-hour average (Siepmann and Finlayson, 2000, with minor corrections to significant figures as described in Beaulaurier et al., 2005). | ||||
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 | ||||
Spatial Representation: | Samples were collected from Merced River at River Road. | ||||
Temporal Representation: | Samples were collected at weekly interval in March, July, and August 2004. | ||||
Environmental Conditions: | |||||
QAPP Information: | Data quality: Good. Calanchini, H. 2006. Quality Assurance Project Plan, Sacramento and San Joaquin River Basins and Sacramento-San Joaquin Delta TMDL Monitoring for Organophosphorus Pesticides and Other Pesticides Identified as Posing a High Risk to Surface Waters. John Muir Institute of the Environment, U.C. Davis. Davis, CA. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan. Sacramento and San Joaquin River Basins and Sacramento-San Joaquin Delta TMDL Monitoring for Organophosphorus Pesticides and Other Pesticides Identified as Posing a High Risk to Surface Waters. Final. SWAMP Project ID 02TM5001 (Revision 0.0). John Muir Institute of the Environment, U.C. Davis. Davis, CA. January 26, 2006 | ||||
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LOE ID: | 22256 | ||||
Pollutant: | Chlorpyrifos | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Aquatic Life Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 13 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | 17 water samples were collected from Merced River from July 2004 through September 2006, representing 13 4-day average concentrations and 13 1-hour average concentrations.0 of 13 4-day average concentrations exceeded the 4-day maximum concentration guideline of 0.015 ug/L.0 of 13 1-hour average concentrations exceeded the maximum 1-hour concentration of 0.025 ug/L. 4 samples were not used in this analysis because of the quantitation limit (0.0254 ug/L) greater than the water quality criteria concentrations (0.015 ug/L). | ||||
Data Reference: | Revised Draft of the 2007 Review of the Monitoring Data for the Irrigated Lands Regulatory Conditional Waiver Program | ||||
Monitoring and Reporting Program, Order Nos. R5-2003-0826, R5-2005-0833, and R5-2008-0005 for Coalition Groups Under Resolution No. R5-2003-0105, Conditional Waiver of Waste Discharge Requirements for Discharges From Irrigated Lands Within the Central Valley Region | |||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses (CVRWQCB, 2007).All waters shall be maintained free of toxic substances in concentrations that produce detrimental physiological responses in human, plant, animal, or aquatic life (CVRWQCB, 2007). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Objective/Criterion 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 | ||||
Evaluation Guideline: | California Department of Fish and Game Hazard Assessment Criteria - 0.015 ug/L 4-day average and 0.025 ug/L 1-hour average (Siepmann and Finlayson, 2000, with minor corrections to significant figures as described in Beaulaurier et al., 2005). | ||||
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 | ||||
Spatial Representation: | Samples were collected from Merced River at Santa Fe. | ||||
Temporal Representation: | Samples were collected weekly from July 2004 through September 2006. | ||||
Environmental Conditions: | |||||
QAPP Information: | Data quality: Good. Monitoring was conducted in accordance with Central Valley Water Board Monitoring and Reporting Program (order number R5-2003-0826) requirements (CVRWQCB, 2003) | ||||
QAPP Information Reference(s): | |||||
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LOE ID: | 67192 | ||||
Pollutant: | Chlorpyrifos | ||||
LOE Subgroup: | Pollutant-Sediment | ||||
Matrix: | Sediment | ||||
Fraction: | Total | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 0 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | The sample was not assessed because, after the laboratory method detection limit result was organic carbon-normalized, the result was above the evaluation guideline and, therefore the result could not be quantified with the level of certainty required by the Listing Policy. | ||||
Data Reference: | Statewide Stream Pollution Trends Study 2008 | ||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. Discharges shall not result in pesticide concentrations in bottom sediments or aquatic life that adversely affect beneficial uses. (Water Quality Control Plan, Central Valley Region, Sacramento River and San Joaquin River Basins) | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | The evaluation guideline value for chlorpyrifos, 0.177 ug/g OC, is one-tenth of the median lethal concentration for H. azteca (LC50; 1.77 ug/g OC). The LC50 (1.77 ug/g OC) is the geometric mean of OC-normalized LC50 values for chlorpyrifos from Amweg and Weston (2007). | ||||
Guideline Reference: | Whole-sediment toxicity identification evaluation tools for pyrethroid insecticides: I. piperonyl butoxide addition. Environ. Toxicol. Chem. 26:2389-2396. | ||||
Spatial Representation: | Data for this line of evidence was collected at one monitoring site [ Merced River @ River Road - 535MER546] | ||||
Temporal Representation: | Data was collected on 7/23/2008. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The SWAMP QAPP (2008) was followed. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
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LOE ID: | 22242 | ||||
Pollutant: | Chlorpyrifos | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Aquatic Life Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 2 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | 10 water samples were collected from Merced River in February 2004, representing 2 4-day average concentrations and 10 1-hour average concentrations.0 of 2 available 4-day average concentrations exceeded the 4-day maximum concentration guideline of 0.015 ug/L. 0 of 10 available 1-hour average concentrations exceeded the maximum 1-hour concentration of 0.025 ug/L. | ||||
Data Reference: | Zipped file of Central Valley Waterways Pesticide TMDL monitoring data spreadsheets and reports | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses (CVRWQCB, 2007).All waters shall be maintained free of toxic substances in concentrations that produce detrimental physiological responses in human, plant, animal, or aquatic life (CVRWQCB, 2007). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | California Department of Fish and Game Hazard Assessment Criteria - 0.015 ug/L 4-day average and 0.025 ug/L 1-hour average (Siepmann and Finlayson, 2000, with minor corrections to significant figures as described in Beaulaurier et al., 2005). | ||||
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 | ||||
Spatial Representation: | Samples were collected from Merced River at River Road. | ||||
Temporal Representation: | Samples were collected daily during two storms in February 2004. | ||||
Environmental Conditions: | |||||
QAPP Information: | Data quality: Good. Calanchini, H. 2006. Quality Assurance Project Plan, Sacramento and San Joaquin River Basins and Sacramento-San Joaquin Delta TMDL Monitoring for Organophosphorus Pesticides and Other Pesticides Identified as Posing a High Risk to Surface Waters. John Muir Institute of the Environment, U.C. Davis. Davis, CA. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan. Sacramento and San Joaquin River Basins and Sacramento-San Joaquin Delta TMDL Monitoring for Organophosphorus Pesticides and Other Pesticides Identified as Posing a High Risk to Surface Waters. Final. SWAMP Project ID 02TM5001 (Revision 0.0). John Muir Institute of the Environment, U.C. Davis. Davis, CA. January 26, 2006 | ||||
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LOE ID: | 22241 | ||||
Pollutant: | Chlorpyrifos | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Aquatic Life 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: | 17 water samples were collected from Merced River from January to March 2003, representing 5 4-day average concentrations and 17 1-hour average concentrations.0 of 5 available 4-day average concentrations exceeded the 4-day maximum concentration guideline of 0.015 ug/L. 0 of 17 available 1-hour average concentrations exceeded the maximum 1-hour chlorpyrifos concentration of 0.025 ug/L. | ||||
Data Reference: | Zipped file of Central Valley Waterways Pesticide TMDL monitoring data spreadsheets and reports | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses (CVRWQCB, 2007).All waters shall be maintained free of toxic substances in concentrations that produce detrimental physiological responses in human, plant, animal, or aquatic life (CVRWQCB, 2007). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | California Department of Fish and Game Hazard Assessment Criteria - 0.015 ug/L 4-day average and 0.025 ug/L 1-hour average (Siepmann and Finlayson, 2000, with minor corrections to significant figures as described in Beaulaurier et al., 2005). | ||||
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 | ||||
Spatial Representation: | Samples were collected from Merced River at River Road. | ||||
Temporal Representation: | Samples were collected daily during two storms in February and March 2003. | ||||
Environmental Conditions: | |||||
QAPP Information: | Data quality: Good. Calanchini, H. 2006. Quality Assurance Project Plan, Sacramento and San Joaquin River Basins and Sacramento-San Joaquin Delta TMDL Monitoring for Organophosphorus Pesticides and Other Pesticides Identified as Posing a High Risk to Surface Waters. John Muir Institute of the Environment, U.C. Davis. Davis, CA. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan. Sacramento and San Joaquin River Basins and Sacramento-San Joaquin Delta TMDL Monitoring for Organophosphorus Pesticides and Other Pesticides Identified as Posing a High Risk to Surface Waters. Final. SWAMP Project ID 02TM5001 (Revision 0.0). John Muir Institute of the Environment, U.C. Davis. Davis, CA. January 26, 2006 | ||||
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LOE ID: | 22255 | ||||
Pollutant: | Chlorpyrifos | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Aquatic Life Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 13 | ||||
Number of Exceedances: | 1 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | 13 water samples were collected from Merced River between March and August 2006, representing 13 4-day average concentrations and 13 1-hour average concentrations.1 of 13 available 4-day average concentrations exceeded the 4-day maximum concentration guideline of 0.015 ug/L. 0 of 13 available 1-hour average concentrations exceeded the maximum 1-hour concentration of 0.025 ug/L. | ||||
Data Reference: | Zipped file of Central Valley Waterways Pesticide TMDL monitoring data spreadsheets and reports | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses (CVRWQCB, 2007).All waters shall be maintained free of toxic substances in concentrations that produce detrimental physiological responses in human, plant, animal, or aquatic life (CVRWQCB, 2007). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Objective/Criterion 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 | ||||
Evaluation Guideline: | California Department of Fish and Game Hazard Assessment Criteria - 0.015 ug/L 4-day average and 0.025 ug/L 1-hour average (Siepmann and Finlayson, 2000, with minor corrections to significant figures as described in Beaulaurier et al., 2005). | ||||
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 | ||||
Spatial Representation: | Samples were collected from Merced River at River Road. | ||||
Temporal Representation: | Samples were collected weekly in March, July, and August 2006. | ||||
Environmental Conditions: | |||||
QAPP Information: | Data quality: Good. Calanchini, H. 2006. Quality Assurance Project Plan, Sacramento and San Joaquin River Basins and Sacramento-San Joaquin Delta TMDL Monitoring for Organophosphorus Pesticides and Other Pesticides Identified as Posing a High Risk to Surface Waters. John Muir Institute of the Environment, U.C. Davis. Davis, CA. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan. Sacramento and San Joaquin River Basins and Sacramento-San Joaquin Delta TMDL Monitoring for Organophosphorus Pesticides and Other Pesticides Identified as Posing a High Risk to Surface Waters. Final. SWAMP Project ID 02TM5001 (Revision 0.0). John Muir Institute of the Environment, U.C. Davis. Davis, CA. January 26, 2006 | ||||
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LOE ID: | 22244 | ||||
Pollutant: | Chlorpyrifos | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Aquatic Life Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 2 | ||||
Number of Exceedances: | 1 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | 8 water samples were collected from Merced River in January and February 2005, representing 2 4-day average concentrations and 8 1-hour average concentrations.1 of 2 available 4-day average concentrations exceeded the 4-day maximum concentration guideline of 0.015 ug/L. 3 of 8 available 1-hour average concentrations exceeded the maximum 1-hour concentration of 0.025 ug/L. | ||||
Data Reference: | Zipped file of Central Valley Waterways Pesticide TMDL monitoring data spreadsheets and reports | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses (CVRWQCB, 2007).All waters shall be maintained free of toxic substances in concentrations that produce detrimental physiological responses in human, plant, animal, or aquatic life (CVRWQCB, 2007). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | California Department of Fish and Game Hazard Assessment Criteria - 0.015 ug/L 4-day average and 0.025 ug/L 1-hour average (Siepmann and Finlayson, 2000, with minor corrections to significant figures as described in Beaulaurier et al., 2005). | ||||
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 | ||||
Spatial Representation: | Samples were collected from Merced River at River Road. | ||||
Temporal Representation: | Samples were collected at daily in January and February 2005. | ||||
Environmental Conditions: | |||||
QAPP Information: | Data quality: Good. Calanchini, H. 2006. Quality Assurance Project Plan, Sacramento and San Joaquin River Basins and Sacramento-San Joaquin Delta TMDL Monitoring for Organophosphorus Pesticides and Other Pesticides Identified as Posing a High Risk to Surface Waters. John Muir Institute of the Environment, U.C. Davis. Davis, CA. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan. Sacramento and San Joaquin River Basins and Sacramento-San Joaquin Delta TMDL Monitoring for Organophosphorus Pesticides and Other Pesticides Identified as Posing a High Risk to Surface Waters. Final. SWAMP Project ID 02TM5001 (Revision 0.0). John Muir Institute of the Environment, U.C. Davis. Davis, CA. January 26, 2006 | ||||
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LOE ID: | 132406 | ||||
Pollutant: | Chlorpyrifos | ||||
LOE Subgroup: | Pollutant-Sediment | ||||
Matrix: | Sediment | ||||
Fraction: | Total | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 4 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed SWAMP Stream Pollution Trends data for Merced River, Lower (McSwain Reservoir to San Joaquin River) to determine beneficial use support and the results are as follows: 0 of the 4 samples exceeded the evaluation guideline for Chlorpyrifos . | ||||
Data Reference: | Water Quality Assessment Data for the 2018 solicitation cycle submitted through CEDEN for SWAMP Stream Pollution Trends | ||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. Discharges shall not result in pesticide concentrations in bottom sediments or aquatic life that adversely affect beneficial uses. (Water Quality Control Plan, Central Valley Region, Sacramento River Basin and San Joaquin River Basins) | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | The evaluation guideline for chlorpyrifos, 0.177 ug/g, is one-tenth of the median lethal concentration (LC50; 1.77 ug/g) and is normalized by the percentage of organic carbon in the sediment sample (Amweg and Weston, 2007). | ||||
Guideline Reference: | Whole-sediment toxicity identification evaluation tools for pyrethroid insecticides: I. piperonyl butoxide addition. Environ. Toxicol. Chem. 26:2389-2396. | ||||
Spatial Representation: | Data were collected from 1 (Station Codes: 535MER546). | ||||
Temporal Representation: | Data for this waterbody were collected over the date range 2010-09-01 to 2013-07-10 | ||||
Environmental Conditions: | |||||
QAPP Information: | Quality Assurance Program Plan and Standard Operating Procedures for SWAMP program | ||||
QAPP Information Reference(s): | Quality Assurance Program Plan for the Statewide Stream Pollution Trends Monitoring Program | ||||
|
|||||
LOE ID: | 22254 | ||||
Pollutant: | Chlorpyrifos | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Aquatic Life Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 14 | ||||
Number of Exceedances: | 2 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | 14 water samples were collected from Merced River between March and August 2005, representing 14 4-day average concentrations and 14 1-hour average concentrations.2 of 14 available 4-day average concentrations exceeded the 4-day maximum concentration guideline of 0.015 ug/L. 0 of 14 available 1-hour average concentrations exceeded the maximum 1-hour concentration of 0.025 ug/L. | ||||
Data Reference: | Zipped file of Central Valley Waterways Pesticide TMDL monitoring data spreadsheets and reports | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses (CVRWQCB, 2007).All waters shall be maintained free of toxic substances in concentrations that produce detrimental physiological responses in human, plant, animal, or aquatic life (CVRWQCB, 2007). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | California Department of Fish and Game Hazard Assessment Criteria - 0.015 ug/L 4-day average and 0.025 ug/L 1-hour average (Siepmann and Finlayson, 2000, with minor corrections to significant figures as described in Beaulaurier et al., 2005). | ||||
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 | ||||
Spatial Representation: | Samples were collected from Merced River at River Road. | ||||
Temporal Representation: | Samples were collected at weekly in March, July, and August 2005. | ||||
Environmental Conditions: | |||||
QAPP Information: | Data quality: Good. Calanchini, H. 2006. Quality Assurance Project Plan, Sacramento and San Joaquin River Basins and Sacramento-San Joaquin Delta TMDL Monitoring for Organophosphorus Pesticides and Other Pesticides Identified as Posing a High Risk to Surface Waters. John Muir Institute of the Environment, U.C. Davis. Davis, CA. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan. Sacramento and San Joaquin River Basins and Sacramento-San Joaquin Delta TMDL Monitoring for Organophosphorus Pesticides and Other Pesticides Identified as Posing a High Risk to Surface Waters. Final. SWAMP Project ID 02TM5001 (Revision 0.0). John Muir Institute of the Environment, U.C. Davis. Davis, CA. January 26, 2006 | ||||
DECISION ID |
73992 |
Region 5 |
Merced River, Lower (McSwain Reservoir to San Joaquin River) |
||
Pollutant: | Diazinon |
Final Listing Decision: | Delist from 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | Delist from 303(d) list (TMDL required list)(2016) |
Revision Status | Original |
Reason for Delisting: | Applicable WQS attained; threatened water no longer threatened |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for removal from the CWA section 303(d) List under section 4.1 of the Listing Policy. Under this section a single line of evidence is necessary to assess listing status.
Eleven lines of evidence are available in the administrative record to assess this pollutant. One of the 206 samples exceed the evaluation guideline, and this does not exceed the allowable frequency listed in Table 4.1 of the Listing Policy. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification for removing this water segment-pollutant combination from the 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 the 206 samples exceeded the 4-day average diazinon criteria and 3 out of 273 samples exceeded the 1-hour average diazinon criteria , and this does not exceed the allowable frequency listed in Table 4.1 of the Listing Policy. 4. Pursuant to section 4.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should be removed from the section 303(d) list because applicable water quality standards for the pollutant 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: | 23043 | ||||
Pollutant: | Diazinon | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Aquatic Life Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 15 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | 22 water samples were collected from Merced River from January through August 2006, representing 15 4-day average concentrations and 22 1-hour average concentrations.0 of 15 available 4-day average concentrations exceeded the 4-day maximum concentration guideline of 0.10 ug/L. 0 of 22 available 1-hour average concentrations exceeded the maximum 1-hour concentration of 0.16 ug/L. | ||||
Data Reference: | Zipped file of Central Valley Waterways Pesticide TMDL monitoring data spreadsheets and reports | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses (CVRWQCB, 2007).All waters shall be maintained free of toxic substances in concentrations that produce detrimental physiological responses in human, plant, animal, or aquatic life (CVRWQCB, 2007). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Objective/Criterion 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 | ||||
Evaluation Guideline: | California Fish and Game Hazard Assessment Criteria - 0.160 ug/L 1-hour average and 0.100 ug/L 4-day average concentration not to be exceeded more than once every three years (Siepmann and Finlayson, 2000 and Finlayson, 2004). | ||||
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 | ||||
Spatial Representation: | Samples were collected from Merced River at River Road. | ||||
Temporal Representation: | Samples were collected at daily and weekly intervals from January through August 2006. | ||||
Environmental Conditions: | |||||
QAPP Information: | Data quality: Good. Calanchini, H. 2006. Quality Assurance Project Plan, Sacramento and San Joaquin River Basins and Sacramento-San Joaquin Delta TMDL Monitoring for Organophosphorus Pesticides and Other Pesticides Identified as Posing a High Risk to Surface Waters. John Muir Institute of the Environment, U.C. Davis. Davis, CA. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan. Sacramento and San Joaquin River Basins and Sacramento-San Joaquin Delta TMDL Monitoring for Organophosphorus Pesticides and Other Pesticides Identified as Posing a High Risk to Surface Waters. Final. SWAMP Project ID 02TM5001 (Revision 0.0). John Muir Institute of the Environment, U.C. Davis. Davis, CA. January 26, 2006 | ||||
|
|||||
LOE ID: | 23023 | ||||
Pollutant: | Diazinon | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Aquatic Life Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 19 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | 19 water samples were collected from Merced River from March to August 2003, representing 19 4-day average concentrations and 19 1-hour average concentrations.0 of 19 available 4-day average concentrations exceeded the 4-day maximum concentration guideline of 0.1 ug/L. 0 of 19 available 1-hour average concentrations exceeded the maximum 1-hour concentration of 0.16 ug/L. | ||||
Data Reference: | Zipped file of Central Valley Waterways Pesticide TMDL monitoring data spreadsheets and reports | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses (CVRWQCB, 2007).All waters shall be maintained free of toxic substances in concentrations that produce detrimental physiological responses in human, plant, animal, or aquatic life (CVRWQCB, 2007). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | California Fish and Game Hazard Assessment Criteria - 0.160 ug/L 1-hour average and 0.100 ug/L 4-day average concentration not to be exceeded more than once every three years (Siepmann and Finlayson, 2000 and Finlayson, 2004). | ||||
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 | ||||
Spatial Representation: | Samples were collected from Merced River at River Road. | ||||
Temporal Representation: | Samples were collected at variable intervals (biweekly and weekly) from March through August 2003. | ||||
Environmental Conditions: | |||||
QAPP Information: | Data quality: Good. Calanchini, H. 2006. Quality Assurance Project Plan, Sacramento and San Joaquin River Basins and Sacramento-San Joaquin Delta TMDL Monitoring for Organophosphorus Pesticides and Other Pesticides Identified as Posing a High Risk to Surface Waters. John Muir Institute of the Environment, U.C. Davis. Davis, CA. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan. Sacramento and San Joaquin River Basins and Sacramento-San Joaquin Delta TMDL Monitoring for Organophosphorus Pesticides and Other Pesticides Identified as Posing a High Risk to Surface Waters. Final. SWAMP Project ID 02TM5001 (Revision 0.0). John Muir Institute of the Environment, U.C. Davis. Davis, CA. January 26, 2006 | ||||
|
|||||
LOE ID: | 23025 | ||||
Pollutant: | Diazinon | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Aquatic Life Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 13 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | 13 water samples were collected from Merced River from March to August 2004, representing 13 4-day average concentrations and 13 1-hour average concentrations.0 of 13 available 4-day average concentrations exceeded the 4-day maximum concentration guideline of 0.10 ug/L. 0 of 13 available 1-hour average concentrations exceeded the maximum 1-hour concentration of 0.16 ug/L. | ||||
Data Reference: | Zipped file of Central Valley Waterways Pesticide TMDL monitoring data spreadsheets and reports | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses (CVRWQCB, 2007).All waters shall be maintained free of toxic substances in concentrations that produce detrimental physiological responses in human, plant, animal, or aquatic life (CVRWQCB, 2007). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | California Fish and Game Hazard Assessment Criteria - 0.160 ug/L 1-hour average and 0.100 ug/L 4-day average concentration not to be exceeded more than once every three years (Siepmann and Finlayson, 2000 and Finlayson, 2004). | ||||
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 | ||||
Spatial Representation: | Samples were collected from Merced River at River Road. | ||||
Temporal Representation: | Samples were collected at variable intervals (weekly or biweekly) from March to August 2004. | ||||
Environmental Conditions: | |||||
QAPP Information: | Data quality: Good. Calanchini, H. 2006. Quality Assurance Project Plan, Sacramento and San Joaquin River Basins and Sacramento-San Joaquin Delta TMDL Monitoring for Organophosphorus Pesticides and Other Pesticides Identified as Posing a High Risk to Surface Waters. John Muir Institute of the Environment, U.C. Davis. Davis, CA. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan. Sacramento and San Joaquin River Basins and Sacramento-San Joaquin Delta TMDL Monitoring for Organophosphorus Pesticides and Other Pesticides Identified as Posing a High Risk to Surface Waters. Final. SWAMP Project ID 02TM5001 (Revision 0.0). John Muir Institute of the Environment, U.C. Davis. Davis, CA. January 26, 2006 | ||||
|
|||||
LOE ID: | 23024 | ||||
Pollutant: | Diazinon | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Aquatic Life Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 2 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | 10 water samples were collected from Merced River in February 2004, representing 2 4-day average concentrations and 10 1-hour average concentrations.0 of 2 available 4-day average concentrations exceeded the 4-day maximum concentration guideline of 0.10 ug/L. 1 of 10 available 1-hour average concentrations exceeded the maximum 1-hour concentration of 0.16 ug/L. | ||||
Data Reference: | Zipped file of Central Valley Waterways Pesticide TMDL monitoring data spreadsheets and reports | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses (CVRWQCB, 2007).All waters shall be maintained free of toxic substances in concentrations that produce detrimental physiological responses in human, plant, animal, or aquatic life (CVRWQCB, 2007). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | California Fish and Game Hazard Assessment Criteria - 0.160 ug/L 1-hour average and 0.100 ug/L 4-day average concentration not to be exceeded more than once every three years (Siepmann and Finlayson, 2000 and Finlayson, 2004). | ||||
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 | ||||
Spatial Representation: | Samples were collected from Merced River at River Road. | ||||
Temporal Representation: | Samples were collected at variable intervals (hourly and daily) during two storm events in February 2004. | ||||
Environmental Conditions: | |||||
QAPP Information: | Data quality: Good. Calanchini, H. 2006. Quality Assurance Project Plan, Sacramento and San Joaquin River Basins and Sacramento-San Joaquin Delta TMDL Monitoring for Organophosphorus Pesticides and Other Pesticides Identified as Posing a High Risk to Surface Waters. John Muir Institute of the Environment, U.C. Davis. Davis, CA. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan. Sacramento and San Joaquin River Basins and Sacramento-San Joaquin Delta TMDL Monitoring for Organophosphorus Pesticides and Other Pesticides Identified as Posing a High Risk to Surface Waters. Final. SWAMP Project ID 02TM5001 (Revision 0.0). John Muir Institute of the Environment, U.C. Davis. Davis, CA. January 26, 2006 | ||||
|
|||||
LOE ID: | 23041 | ||||
Pollutant: | Diazinon | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Aquatic Life Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 6 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | 14 water samples were collected from Merced River from January through March 2005, representing 6 4-day average concentrations and 14 1-hour average concentrations.0 of 6 available 4-day average concentrations exceeded the 4-day maximum concentration guideline of 0.10 ug/L. 0 of 14 available 1-hour average concentrations exceeded the maximum 1-hour concentration of 0.16 ug/L. | ||||
Data Reference: | Zipped file of Central Valley Waterways Pesticide TMDL monitoring data spreadsheets and reports | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses (CVRWQCB, 2007).All waters shall be maintained free of toxic substances in concentrations that produce detrimental physiological responses in human, plant, animal, or aquatic life (CVRWQCB, 2007). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | California Fish and Game Hazard Assessment Criteria - 0.160 ug/L 1-hour average and 0.100 ug/L 4-day average concentration not to be exceeded more than once every three years (Siepmann and Finlayson, 2000 and Finlayson, 2004). | ||||
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 | ||||
Spatial Representation: | Samples were collected from Merced River at River Road. | ||||
Temporal Representation: | Samples were collected at variable intervals (hourly, daily, and weekly) from January through March 2005. | ||||
Environmental Conditions: | |||||
QAPP Information: | Data quality: Good. Calanchini, H. 2006. Quality Assurance Project Plan, Sacramento and San Joaquin River Basins and Sacramento-San Joaquin Delta TMDL Monitoring for Organophosphorus Pesticides and Other Pesticides Identified as Posing a High Risk to Surface Waters. John Muir Institute of the Environment, U.C. Davis. Davis, CA. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan. Sacramento and San Joaquin River Basins and Sacramento-San Joaquin Delta TMDL Monitoring for Organophosphorus Pesticides and Other Pesticides Identified as Posing a High Risk to Surface Waters. Final. SWAMP Project ID 02TM5001 (Revision 0.0). John Muir Institute of the Environment, U.C. Davis. Davis, CA. January 26, 2006 | ||||
|
|||||
LOE ID: | 23042 | ||||
Pollutant: | Diazinon | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Aquatic Life Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 14 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | 14 water samples were collected from Merced River from March through August 2005, representing 14 4-day average concentrations and 14 1-hour average concentrations.0 of 14 available 4-day average concentrations exceeded the 4-day maximum concentration guideline of 0.10 ug/L. 0 of 14 available 1-hour average concentrations exceeded the maximum 1-hour concentration of 0.16 ug/L. | ||||
Data Reference: | Zipped file of Central Valley Waterways Pesticide TMDL monitoring data spreadsheets and reports | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses (CVRWQCB, 2007).All waters shall be maintained free of toxic substances in concentrations that produce detrimental physiological responses in human, plant, animal, or aquatic life (CVRWQCB, 2007). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | California Fish and Game Hazard Assessment Criteria - 0.160 ug/L 1-hour average and 0.100 ug/L 4-day average concentration not to be exceeded more than once every three years (Siepmann and Finlayson, 2000 and Finlayson, 2004). | ||||
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 | ||||
Spatial Representation: | Samples were collected from Merced River at River Road. | ||||
Temporal Representation: | Samples were collected at weekly interval from January through March 2005. | ||||
Environmental Conditions: | |||||
QAPP Information: | Data quality: Good. Calanchini, H. 2006. Quality Assurance Project Plan, Sacramento and San Joaquin River Basins and Sacramento-San Joaquin Delta TMDL Monitoring for Organophosphorus Pesticides and Other Pesticides Identified as Posing a High Risk to Surface Waters. John Muir Institute of the Environment, U.C. Davis. Davis, CA. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan. Sacramento and San Joaquin River Basins and Sacramento-San Joaquin Delta TMDL Monitoring for Organophosphorus Pesticides and Other Pesticides Identified as Posing a High Risk to Surface Waters. Final. SWAMP Project ID 02TM5001 (Revision 0.0). John Muir Institute of the Environment, U.C. Davis. Davis, CA. January 26, 2006 | ||||
|
|||||
LOE ID: | 23022 | ||||
Pollutant: | Diazinon | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Aquatic Life Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 6 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | 17 water samples were collected from Merced River from February to March 2003, representing 6 4-day average concentrations and 19 1-hour average concentrations.0 of 6 available 4-day average concentrations exceeded the 4-day maximum concentration guideline of 0.10 ug/L. 0 of 17 available 1-hour average concentrations exceeded the maximum 1-hour concentration of 0.16 ug/L. | ||||
Data Reference: | Zipped file of Central Valley Waterways Pesticide TMDL monitoring data spreadsheets and reports | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses (CVRWQCB, 2007). All waters shall be maintained free of toxic substances in concentrations that produce detrimental physiological responses in human, plant, animal, or aquatic life (CVRWQCB, 2007). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | California Fish and Game Hazard Assessment Criteria - 0.160 ug/L 1-hour average and 0.100 ug/L 4-day average concentration not to be exceeded more than once every three years (Siepmann and Finlayson, 2000 and Finlayson, 2004). | ||||
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 | ||||
Spatial Representation: | Samples were collected from Merced River at River Road. | ||||
Temporal Representation: | Samples were collected at variable intervals (hourly or daily) from February to March 2003. | ||||
Environmental Conditions: | |||||
QAPP Information: | Data quality: Good. Calanchini, H. 2006. Quality Assurance Project Plan, Sacramento and San Joaquin River Basins and Sacramento-San Joaquin Delta TMDL Monitoring for Organophosphorus Pesticides and Other Pesticides Identified as Posing a High Risk to Surface Waters. John Muir Institute of the Environment, U.C. Davis. Davis, CA. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan. Sacramento and San Joaquin River Basins and Sacramento-San Joaquin Delta TMDL Monitoring for Organophosphorus Pesticides and Other Pesticides Identified as Posing a High Risk to Surface Waters. Final. SWAMP Project ID 02TM5001 (Revision 0.0). John Muir Institute of the Environment, U.C. Davis. Davis, CA. January 26, 2006 | ||||
|
|||||
LOE ID: | 23044 | ||||
Pollutant: | Diazinon | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Aquatic Life Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 107 | ||||
Number of Exceedances: | 1 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | 140 Water samples were collected from Merced River from January 2000 through June 2005, representing 107 4-day average concentrations and 140 1-hour average concentrations.1 of 107 available 4-day average concentrations exceeded the 4-day maximum concentration guideline of 0.1 ug/L. 3 of 140 available 1-hour average concentrations exceeded the maximum 1-hour concentration of 0.16 ug/L. | ||||
Data Reference: | Surface Water database (SWDB) for Central Valley waterbodies, 2000-2005 | ||||
Correspondence between the Department of Pesticide Regulation and Central Valley Regional Water Quality Control Board regarding water quality data for waterbodies in the Central Valley | |||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses (CVRWQCB, 2007).All waters shall be maintained free of toxic substances in concentrations that produce detrimental physiological responses in human, plant, animal, or aquatic life (CVRWQCB, 2007). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Objective/Criterion 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 | ||||
Evaluation Guideline: | California Fish and Game Hazard Assessment Criteria - 0.160 ug/L 1-hour average and 0.100 ug/L 4-day average concentration not to be exceeded more than once every three years (Siepmann and Finlayson, 2000 and Finlayson, 2004). | ||||
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 | ||||
Spatial Representation: | Samples were collected from Merced River at River Road. | ||||
Temporal Representation: | Samples were collected at variable intervals (e.g. hourly, weekly, monthly) from January 2000 through June 2005. | ||||
Environmental Conditions: | |||||
QAPP Information: | Data quality: Good. Minimum requirements for the CDPR Surface Water Database are: Name of the sampling agency or organization, Date that each sample was collected, Date of each sample analysis, County where samples were taken, Detailed sampling location information (including latitude and longitude or township/range/section if available), detailed map or description of each sampling site (i.e., address, cross roads, etc.), Name or description of water body sampled, Name of the active ingredient analyzed for; concentration detected (with unit of measurement), and limit of quantitation, Description of analytical QA/QC plan, or statement that no formal plan exists. Additional optional requirements are included on DPR's webpage at http://www.cdpr.ca.gov/docs/emon/surfwtr/caps/req.htm | ||||
QAPP Information Reference(s): | Standard Operating Procedure for Conducting Surface Water Monitoring for Pesticides | ||||
|
|||||
LOE ID: | 67230 | ||||
Pollutant: | Diazinon | ||||
LOE Subgroup: | Pollutant-Sediment | ||||
Matrix: | Sediment | ||||
Fraction: | Total | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 0 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | The sample was below both the reporting limit (5 ng/g dry weight) and the organic carbon-normalized evaluation guideline value (1.1 ug/g OC) and could not be quantified with the level of certainty required by the listing policy. | ||||
Data Reference: | Statewide Stream Pollution Trends Study 2008 | ||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. Discharges shall not result in pesticide concentrations in bottom sediments or aquatic life that adversely affect beneficial uses. (Water Quality Control Plan, Central Valley Region, Sacramento River and San Joaquin River Basins) | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | The evaluation guideline value for diazinon, 1.1 ug/g OC, is one-tenth of the median lethal concentration for H. azteca (LC50; 11 ug/g OC). The LC50 (11 ug/g OC) is the geometric mean of OC-normalized LC50 values for diazinon (Ding et al. 2011). | ||||
Guideline Reference: | Toxicity of Sediment-Associated Pesticides to Chironomus dilutus and Hyalella azteca. Arch. Environ. Contam. Toxicol. 61:83Āæ92. | ||||
Spatial Representation: | Data for this line of evidence was collected at one monitoring site [ Merced River @ River Road - 535MER546] | ||||
Temporal Representation: | Data was collected on 7/23/2008. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The SWAMP QAPP (2008) was followed. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
|
|||||
LOE ID: | 67231 | ||||
Pollutant: | Diazinon | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 24 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed Ag Waiver data for Merced River, Lower (McSwain Reservoir to San Joaquin River) to determine beneficial use support and results are as follows: 0 of 24 samples exceed the criterion for Diazinon. | ||||
Data Reference: | Data for Various Pollutants in East San Joaquin, 2004-2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. (Water Quality Control Plan, Central Valley Region, Sacramento River Basin and San Joaquin River Basin) | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | The freshwater chronic criterion 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 Merced River, Lower (McSwain Reservoir to San Joaquin River) was collected at 1 monitoring site [Merced River @ Santa Fe - 535XMRSFD] | ||||
Temporal Representation: | Data was collected over the time period 2/12/2007-5/19/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0 was followed. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0. | ||||
|
|||||
LOE ID: | 4477 | ||||
Pollutant: | Diazinon | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Not Recorded | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 0 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | Not Specified | ||||
Data Used to Assess Water Quality: | Unspecified--This LOE is a placeholder to support a 303(d) listing decision made prior to 2006. | ||||
Data Reference: | Placeholder reference pre-2006 303(d) | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Unspecified | ||||
Objective/Criterion Reference: | Placeholder reference pre-2006 303(d) | ||||
Evaluation Guideline: | Unspecified | ||||
Guideline Reference: | Placeholder reference pre-2006 303(d) | ||||
Spatial Representation: | Unspecified | ||||
Temporal Representation: | Unspecified | ||||
Environmental Conditions: | Unspecified | ||||
QAPP Information: | Unspecified | ||||
QAPP Information Reference(s): | |||||
DECISION ID |
74341 |
Region 5 |
Merced River, Lower (McSwain Reservoir to San Joaquin River) |
||
Pollutant: | Escherichia coli (E. coli) |
Final Listing Decision: | Delist from 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | Delist from 303(d) list (TMDL required list)(2016) |
Revision Status | Original |
Reason for Delisting: | Applicable WQS attained; reason for recovery unspecified |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for removal from the CWA section 303(d) List under section 4.2 of the Listing Policy. Under this section a single line of evidence is necessary to assess listing status.
Nine lines of evidence are available in the administrative record to assess this pollutant. Nine of 69 samples exceeded the evaluation guideline. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification for removing this water segment-pollutant combination from the 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. Nine of 69 samples exceeded the evaluation guideline and this does not exceed the allowable frequency listed in Table 4.2 of the Listing Policy. 4. Pursuant to section 4.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should be removed from the section 303(d) list because applicable water quality standards for the pollutant 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: | 67071 | ||||
Pollutant: | Escherichia coli (E. coli) | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Water Contact Recreation | ||||
Number of Samples: | 6 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PATHOGEN MONITORING | ||||
Data Used to Assess Water Quality: | SWAMP data indicates that 0 of 6 sample results exceed the evaluation guideline value for Escherichia coli. | ||||
Data Reference: | RWB5 Safe to Swim FY0708 FY0809 | ||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | Waters shall not contain chemical constituents in concentrations that adversely affect beneficial uses. (Water Quality Control Plan, Central Valley Region, Sacramento River and San Joaquin River Basins) | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | The U.S. EPA recommended objective for a single-sample maximum allowable density of E. coli in freshwater designated-beach areas is 235 MPN/100mL. | ||||
Guideline Reference: | 40 CFR Part 131 Water Quality Standards for Coastal and Great Lakes Recreation Waters; Final Rule [Federal Register / Vol. 69, No. 220] | ||||
Spatial Representation: | Data for this line of evidence was collected at two monitoring sites [ Merced River at Henderson Park - 535MER210, Merced River @ Merced Falls Gauging St. - 535MER209] | ||||
Temporal Representation: | Data was collected over the time period 8/27/2008-9/3/2008. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The SWAMP QAPP (2008) was followed. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
|
|||||
LOE ID: | 22231 | ||||
Pollutant: | Escherichia coli (E. coli) | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Water Contact Recreation | ||||
Number of Samples: | 22 | ||||
Number of Exceedances: | 6 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | The Central Valley Regional Water Quality Control Board Surface Water Ambient Monitoring Program collected 72 samples from January 2003 to January 2004. Six out of 22 samples exceeded the evaluation objective. | ||||
Data Reference: | Monitoring Data from the Surface Water Ambient Monitoring Program (SWAMP), San Joaquin River Basin - 2007 Data Review | ||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations that produce detrimental physiological responses in human, plant, animal, or aquatic life. The objective applies regardless of whether the toxicity is caused by a single substance or the interactive effect of multiple substances. | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Objective/Criterion Reference: | Ambient Water Quality Criteria for Bacteria - 1986. EPA440/5-84-002 | ||||
Evaluation Guideline: | The USEPA E. Coli objective of 235/100 mL in any single sample (USEPA 1986). | ||||
Guideline Reference: | Ambient Water Quality Criteria for Bacteria - 1986. EPA440/5-84-002 | ||||
Spatial Representation: | Samples were collected at four locations: Merced River at Highway 49, Merced River at Merced Falls, Merced River at Highway 99, and Merced River at River Road. | ||||
Temporal Representation: | Sampling occurred from January 2003 to March 2004. | ||||
Environmental Conditions: | |||||
QAPP Information: | Data quality: Good. Monitoring was conducted in accordance with the State Water Resources Control Board's Quality Assurance Program Plan for the State of California's Surface Water Ambient Monitoring Program. | ||||
QAPP Information Reference(s): | Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version) | ||||
|
|||||
LOE ID: | 22230 | ||||
Pollutant: | Escherichia coli (E. coli) | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Water Contact Recreation | ||||
Number of Samples: | 12 | ||||
Number of Exceedances: | 1 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | The East San Joaquin Water Quality Coalition collected 12 samples from July 2004 to March 2006. One out of the 12 samples collected exceeded the evaluation objective. | ||||
Data Reference: | Revised Draft of the 2007 Review of the Monitoring Data for the Irrigated Lands Regulatory Conditional Waiver Program | ||||
Monitoring and Reporting Program, Order Nos. R5-2003-0826, R5-2005-0833, and R5-2008-0005 for Coalition Groups Under Resolution No. R5-2003-0105, Conditional Waiver of Waste Discharge Requirements for Discharges From Irrigated Lands Within the Central Valley Region | |||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations that produce detrimental physiological responses in human, plant, animal, or aquatic life. The objective applies regardless of whether the toxicity is caused by a single substance or the interactive effect of multiple substances. | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Objective/Criterion Reference: | Ambient Water Quality Criteria for Bacteria - 1986. EPA440/5-84-002 | ||||
Evaluation Guideline: | The USEPA E. Coli objective of 235/100 mL in any single sample (USEPA 1986). | ||||
Guideline Reference: | Ambient Water Quality Criteria for Bacteria - 1986. EPA440/5-84-002 | ||||
Spatial Representation: | Samples were collected at Merced River at Sante Fe. | ||||
Temporal Representation: | Sampling occurred July 2004 to March 2006. | ||||
Environmental Conditions: | |||||
QAPP Information: | Data quality: Good. Monitoring was conducted in accordance with Central Valley Water Board Monitoring and Reporting Program (order number R5-2003-0826) requirements (CVRWQCB, 2003) | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 67077 | ||||
Pollutant: | Escherichia coli (E. coli) | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Water Contact Recreation | ||||
Number of Samples: | 28 | ||||
Number of Exceedances: | 2 | ||||
Data and Information Type: | PATHOGEN MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed Ag Waiver data for Merced River, Lower (McSwain Reservoir to San Joaquin River) to determine beneficial use support and results are as follows: 2 of 28 samples exceed the criterion for Escherichia coli. | ||||
Data Reference: | Data for Various Pollutants in East San Joaquin, 2004-2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Waters shall not contain chemical constituents in concentrations that adversely affect beneficial uses. (Water Quality Control Plan, Central Valley Region, Sacramento River and San Joaquin River Basins) | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Tulare Lake Basin Second Edition. rev. Jan 2004 | ||||
Evaluation Guideline: | The USEPA recommended objective for single sample maximum allowable density of E. coli in freshwater designated beach areas is 235 MPN/100mL. | ||||
Guideline Reference: | Ambient Water Quality Criteria for Bacteria - 1986. EPA440/5-84-002 | ||||
Spatial Representation: | Data for this line of evidence for Merced River, Lower (McSwain Reservoir to San Joaquin River) was collected at 1 monitoring site [Merced River @ Santa Fe - 535XMRSFD] | ||||
Temporal Representation: | Data was collected over the time period 4/22/2008-7/20/2010. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0 was followed. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0. | ||||
|
|||||
LOE ID: | 67070 | ||||
Pollutant: | Escherichia coli (E. coli) | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Water Contact Recreation | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PATHOGEN MONITORING | ||||
Data Used to Assess Water Quality: | SWAMP data indicates that 0 of the sample results exceed the evaluation guideline value for Escherichia coli. | ||||
Data Reference: | RWB5S SJR Trends FY0708 FY0809 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Waters shall not contain chemical constituents in concentrations that adversely affect beneficial uses. (Water Quality Control Plan, Central Valley Region, Sacramento River and San Joaquin River Basins) | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | The U.S. EPA recommended objective for a single-sample maximum allowable density of E. coli in freshwater designated-beach areas is 235 MPN/100mL. | ||||
Guideline Reference: | 40 CFR Part 131 Water Quality Standards for Coastal and Great Lakes Recreation Waters; Final Rule [Federal Register / Vol. 69, No. 220] | ||||
Spatial Representation: | Data for this line of evidence was collected at one monitoring site [ Merced River @ River Road - 535MER546] | ||||
Temporal Representation: | Data was collected on 5/15/2008. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The SWAMP QAPP (2008) was followed. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
DECISION ID |
70030 |
Region 5 |
Merced River, Lower (McSwain Reservoir to San Joaquin River) |
||
Pollutant: | Mercury |
Final Listing Decision: | Do Not Delist from 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | Do Not Delist from 303(d) list (TMDL required list)(2016) |
Revision Status | Original |
Sources: | A Source Unknown |
Expected TMDL Completion Date: | 2019 |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for removal from the CWA section 303(d) List under section 4.5 of the Listing Policy. Under this section a single line of evidence is necessary to assess listing status.
Two lines of evidence are available in the administrative record to assess pollutant. Two of the two samples exceed the criteria for COMM. Also, zero of one sample exceed the sediment evaluation guideline for COLD. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against removing this water segment-pollutant combination from the CWA section 303(d) List. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. Two of the two samples exceed the criteria for COMM and this exceeds the allowable frequency listed in Table 4.1 of the Listing Policy. 4. Pursuant to section 4.11 of the Listing Policy, no additional data and information are available indicating that standards are met. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be removed from the section 303(d) list because applicable water quality standards for the pollutant are being exceeded. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 67120 | ||||
Pollutant: | Mercury | ||||
LOE Subgroup: | Pollutant-Sediment | ||||
Matrix: | Sediment | ||||
Fraction: | Total | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | SWAMP data indicates that 0 of the sample results exceed the evaluation guideline value for Mercury. | ||||
Data Reference: | Statewide Stream Pollution Trends Study 2008 | ||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations that produce detrimental physiological responses in human, plant, animal, or aquatic life. (Water Quality Control Plan, Central Valley Region, Sacramento River Basin and San Joaquin River Basin) | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | In freshwater sediments, the probable effect concentration (predictive of sediment toxicity) for mercury is 1.06 mg/Kg dry weight (MacDonald et al. 2000). | ||||
Guideline Reference: | Development and evaluation of consensus-based sediment quality guidelines for freshwater ecosystems. Environmental Contamination and Toxicology. 39: 20-31 | ||||
Spatial Representation: | Data for this line of evidence was collected at one monitoring site [ Merced River @ River Road - 535MER546] | ||||
Temporal Representation: | Data was collected on 7/23/2008. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The SWAMP QAPP (2008) was followed. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
|
|||||
LOE ID: | 2753 | ||||
Pollutant: | Mercury | ||||
LOE Subgroup: | Pollutant-Tissue | ||||
Matrix: | Tissue | ||||
Fraction: | Total | ||||
Beneficial Use: | Commercial or recreational collection of fish, shellfish, or organisms | ||||
Number of Samples: | 2 | ||||
Number of Exceedances: | 2 | ||||
Data and Information Type: | Fish tissue analysis | ||||
Data Used to Assess Water Quality: | Two out of 2 samples exceeded. Two filet composite samples were collected in 1998. One sample each of largemouth bass and one of channel catfish. Both samples exceeded the guideline (TSMP, 2002). | ||||
Data Reference: | Placeholder reference 2006 303(d) | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Central Valley RWQCB Basin Plan: All waters shall be maintained free of toxic substances in concentrations that are toxic to, or produce detrimental physiological responses in human, plant, animal, or aquatic life. | ||||
Objective/Criterion Reference: | Placeholder reference 2006 303(d) | ||||
Evaluation Guideline: | OEHHA Screening Value of 0.3 ug/g for mercury (Brodberg & Pollock, 1999). | ||||
Guideline Reference: | Placeholder reference 2006 303(d) | ||||
Spatial Representation: | One station located at George J. Hatfield State Recreation Area. | ||||
Temporal Representation: | Samples were collected on 11/5/98. | ||||
Environmental Conditions: | |||||
QAPP Information: | Environmental Chemistry Quality Assurance and Data Report for the Toxic Substances Monitoring Program, 1996-2000. Department of Fish and Game. | ||||
QAPP Information Reference(s): | |||||
DECISION ID |
86308 |
Region 5 |
Merced River, Lower (McSwain Reservoir to San Joaquin River) |
||
Pollutant: | Temperature, water |
Final Listing Decision: | Do Not Delist from 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | Do Not Delist from 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 removal from the CWA section 303(d) List under section 4.2 of the Listing Policy. Under this section a single line of evidence is necessary to assess listing status.
Eighteen lines of evidence are available in the administrative record to assess this pollutant. 415 of 483 samples exceed the SPWN evaluation guideline, 150 of 183 samples exceed the MIGR evaluation guideline, and 18 of 48 samples exceed the COLD evaluation guideline. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against removing this water segment-pollutant combination from the 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. 415 of 483 samples exceed the SPWN evaluation guideline, 150 of 183 samples exceed the MIGR evaluation guideline, and 18 of 48 samples exceed the COLD evaluation guideline. This exceeds the allowable frequency listed in Table 4.2 of the Listing Policy. 4. Pursuant to section 4.11 of the Listing Policy, no additional data and information are available indicating that standards are met. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be removed from the section 303(d) list because applicable water quality standards for the pollutant are being exceeded. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 67229 | ||||
Pollutant: | Temperature, water | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Fish Migration | ||||
Number of Samples: | 53 | ||||
Number of Exceedances: | 44 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Stream temperatures were measured by California Department of Fish and Game (CDFG) using data loggers (Stowaways, Tidbits and Hobo Temp Pros). The 7DADM was recorded weekly for each river mile. The Maximum 7DADM or the Weekly Maximum Temperature (MWMT) was calculated for each year. Based on the data provided, 44 out of 53 MWMT values exceeded the <18 degree C criteria in 2008 and 2009. | ||||
Data Reference: | Data for Hydromodification in Various Water Bodies in Region 5, 2006-2009. | ||||
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 Water Board that such alteration in temperature does not adversely affect beneficial uses. In determining compliance with the water quality objectives for temperature, appropriate averaging periods may be applied provided that beneficial uses will be fully protected. (Central Valley Regional Board Basin Plan, Pg. III-8.00, Water Quality Objectives) | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | The guideline used was the 2003 US EPA Region 10 Guidance for Pacific Northwest State and Tribal Temperature Water Quality Standards (USEPA, 2003). The document includes recommended temperature criteria for salmon and trout based on different life stages. The recommended temperature for salmon and trout adult migration is <18oC for a 7DADM. The adult migration life stage occurs from river mile 0 (confluence with the San Joaquin River) to river mile 52 (Merced River Hatchery). This life stage occurs during Julian weeks 36 through 43, which is approximately September 1st through October 31st. | ||||
Guideline Reference: | EPA Region 10 Guidance for Pacific Northwest State and Tribal Temperature Water Quality Standards. EPA 910-B-03-002. U.S. Environmental Protection Agency Region 10 Office of Water, Seattle, WA. | ||||
Spatial Representation: | The adult migration life stage occurs from river mile 0 (confluence with the San Joaquin River) to river mile 52 (Merced River Hatchery). Samples were collected at the following monitoring locations: MRH-Merced River Hatchery MGST-Merced River (G Street Bridge) MUROB-Merced River (Upper Robinson) MROB-Merced River (Robinson) M59B-Merced River (Hwy 59 Bridge) MRAT-Merced River (Ratzlaff) MBRAT-Merced River (below Ratzlaff) MGAL-Merced River (Gallo Ranch Bridge) MRSHAF-Merced River at Shaffer Bridge MRSFB-Merced River near Santa Fe Bridge MRLIVING-Merced River above Livingston Spill M99-Merced River at Highway 99 Bridge MHAG2-Merced River at Haggaman Park RST access MASTVSP-Merced River above Stevinson Spill MBSTVSP-Merced River below Stevinson Spill MHFLD-Merced River (Hatfield Park) MRSJR-Merced River at San Joaquin River Confluence | ||||
Temporal Representation: | The adult migration life stage occurs during Julian weeks 36 through 43, which is approximately September 1st through October 31st. Data was collected during this life stage on a continuous basis (hourly intervals) in 2008 and 2009, although it should be noted that some stations did not have data collected during this time period. If there was no data collected during this time period, these stations were not counted in the assessment. | ||||
Environmental Conditions: | |||||
QAPP Information: | Data is supported by a Quality Assurance Project Plan (QAPP) pursuant to the requirements of 40 CFR 31.45 and are acceptable for use in developing the section 303(d) list. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 67228 | ||||
Pollutant: | Temperature, water | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Fish Spawning | ||||
Number of Samples: | 10 | ||||
Number of Exceedances: | 8 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Stream temperatures were measured by California Department of Fish and Game (CDFG) using data loggers (Stowaways, Tidbits and Hobo Temp Pros). The 7DADM was recorded weekly for each river mile. The Maximum 7DADM or the Maximum Weekly Maximum Temperature (MWMT) was calculated for each year. Based on the data provided, 8 out of 10 MWMT values exceeded the <18 degree C criteria in 2008 and 2009. | ||||
Data Reference: | Data for Hydromodification in Various Water Bodies in Region 5, 2006-2009. | ||||
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 Water Board that such alteration in temperature does not adversely affect beneficial uses. In determining compliance with the water quality objectives for temperature, appropriate averaging periods may be applied provided that beneficial uses will be fully protected. (Central Valley Regional Board Basin Plan, Pg. III-8.00, Water Quality Objectives) | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | The guideline used was the 2003 US EPA Region 10 Guidance for Pacific Northwest State and Tribal Temperature Water Quality Standards (USEPA, 2003). The document includes recommended temperature criteria for salmon and trout based on different life stages. The recommended temperature for steelhead summer rearing is <18 degrees C for a 7DADM. The steelhead summer rearing life stage occurs from river mile 42 (Hwy 59 Bridge) to river mile 52 (Merced River Hatchery). This life stage occurs during Julian weeks 24 through 37, which is approximately June 15th through September 15th. | ||||
Guideline Reference: | EPA Region 10 Guidance for Pacific Northwest State and Tribal Temperature Water Quality Standards. EPA 910-B-03-002. U.S. Environmental Protection Agency Region 10 Office of Water, Seattle, WA. | ||||
Spatial Representation: | The steelhead summer rearing life stage occurs from river mile 42 (Hwy 59 Bridge) to river mile 52 (Merced River Hatchery). Samples were collected at the following monitoring locations: MRH-Merced River Hatchery MGST-Merced River (G Street Bridge) MUROB-Merced River (Upper Robinson) MROB-Merced River (Robinson) M59B-Merced River (Hwy 59 Bridge) | ||||
Temporal Representation: | The steelhead summer rearing life stage occurs during Julian weeks 24 through 37, which is approximately June 15th through September 15th. Data was collected during this life stage on a continuous basis (hourly intervals) in 2008 and 2009. | ||||
Environmental Conditions: | |||||
QAPP Information: | Data is supported by a Quality Assurance Project Plan (QAPP) pursuant to the requirements of 40 CFR 31.45 and are acceptable for use in developing the section 303(d) list. | ||||
QAPP Information Reference(s): | |||||
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LOE ID: | 67072 | ||||
Pollutant: | Temperature, water | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Fish Spawning | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | The sample collected did not exceed the site specific objective. | ||||
Data Reference: | RWB5 Safe to Swim FY0708 FY0809 | ||||
SWAMP Data: | 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 Water Board that such alteration in temperature does not adversely affect beneficial uses. In determining compliance with the water quality objectives for temperature, appropriate averaging periods may be applied provided that beneficial uses will be fully protected. (Central Valley Regional Board Basin Plan, Pg. III-8.00, Water Quality Objectives). The table specifies that the temperature for this water body shall not exceed 21.1 deg. C on the specified date of 8/31/2008. | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data were collected at the Upper Sacramento River at Dog Creek confluence (506SHA951) station. | ||||
Temporal Representation: | Data were collected at collected on 8/31/2008. | ||||
Environmental Conditions: | |||||
QAPP Information: | SWAMP QAPP (2008). | ||||
QAPP Information Reference(s): | |||||
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LOE ID: | 67236 | ||||
Pollutant: | Temperature, water | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Fish Spawning | ||||
Number of Samples: | 12 | ||||
Number of Exceedances: | 12 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Stream temperatures were measured by California Department of Fish and Game (CDFG) using data loggers (Stowaways, Tidbits and Hobo Temp Pros). The 7DADM was recorded weekly for each river mile. The Maximum 7DADM or the Maximum Weekly Maximum Temperature (MWMT) was calculated for each year. Based on the data provided, all 12 MWMT values exceeded the <13 degree C criteria in 2008 and 2009. | ||||
Data Reference: | Data for Hydromodification in Various Water Bodies in Region 5, 2006-2009. | ||||
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 Water Board that such alteration in temperature does not adversely affect beneficial uses. In determining compliance with the water quality objectives for temperature, appropriate averaging periods may be applied provided that beneficial uses will be fully protected. (Central Valley Regional Board Basin Plan, Pg. III-8.00, Water Quality Objectives) | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | The guideline used was the 2003 US EPA Region 10 Guidance for Pacific Northwest State and Tribal Temperature Water Quality Standards (USEPA, 2003). The document includes recommended temperature criteria for salmon and trout based on different life stages. The recommended temperature for salmon and trout spawning is <13 degrees C for a 7DADM. The spawning life stage occurs from river mile 28 (near Santa Fe Bridge) to river mile 52 (Merced River Hatchery). This life stage occurs during Julian weeks 40 through 50, which is approximately October 1st through December 15th. | ||||
Guideline Reference: | EPA Region 10 Guidance for Pacific Northwest State and Tribal Temperature Water Quality Standards. EPA 910-B-03-002. U.S. Environmental Protection Agency Region 10 Office of Water, Seattle, WA. | ||||
Spatial Representation: | The spawning life stage occurs from river mile 0 (confluence with the San Joaquin River) to river mile 52 (Merced River Hatchery). Samples were collected at the following monitoring locations: MRH-Merced River Hatchery MGST-Merced River (G Street Bridge) MUROB-Merced River (Upper Robinson) MROB-Merced River (Robinson) M59B-Merced River (Hwy 59 Bridge) MRAT-Merced River (Ratzlaff) MBRAT-Merced River (below Ratzlaff) MGAL-Merced River (Gallo Ranch Bridge) MRSHAF-Merced River at Shaffer Bridge MRSFB-Merced River near Santa Fe Bridge | ||||
Temporal Representation: | The spawning life stage occurs during Julian Weeks 40 through 50, which is approximately October 1st through December 15th. Data was collected during this life stage on a continuous basis (hourly intervals) in 2008 and 2009, although it should be noted that some stations did not have data collected during this time period. If there was no data collected during this time period, these stations were not counted in the assessment. | ||||
Environmental Conditions: | |||||
QAPP Information: | Data is supported by a Quality Assurance Project Plan (QAPP) pursuant to the requirements of 40 CFR 31.45 and are acceptable for use in developing the section 303(d) list. | ||||
QAPP Information Reference(s): | |||||
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LOE ID: | 67244 | ||||
Pollutant: | Temperature, water | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Fish Spawning | ||||
Number of Samples: | 6 | ||||
Number of Exceedances: | 4 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Four of the 6 samples exceeded the evaluation guideline. | ||||
Data Reference: | RWB5 Safe to Swim FY0708 FY0809 | ||||
SWAMP Data: | 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 Water Board that such alteration in temperature does not adversely affect beneficial uses. In determining compliance with the water quality objectives for temperature, appropriate averaging periods may be applied provided that beneficial uses will be fully protected. (Central Valley Regional Board Basin Plan, Pg. III-8.00, Water Quality Objectives) | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | The guideline used was the 2003 US EPA Region 10 Guidance for Pacific Northwest State and Tribal Temperature Water Quality Standards (USEPA, 2003). The document includes recommended temperature criteria for salmon and trout based on different life stages. The recommended temperature for steelhead summer rearing is <18 degrees C for a 7DADM. The steelhead summer rearing life stage occurs from river mile 42 (Hwy 59 Bridge) to river mile 52 (Merced River Hatchery). This life stage occurs during Julian weeks 24 through 37, which is approximately June 15th through September 15th. | ||||
Guideline Reference: | EPA Region 10 Guidance for Pacific Northwest State and Tribal Temperature Water Quality Standards. EPA 910-B-03-002. U.S. Environmental Protection Agency Region 10 Office of Water, Seattle, WA. | ||||
Spatial Representation: | Samples were collected from the Merced River @ Merced Falls Gauging St. (535MER209) and Merced River at Henderson Park (535MER210) stations. | ||||
Temporal Representation: | Samples were collected on the following dates: 9/3/2008 8/31/2008 8/27/2008. | ||||
Environmental Conditions: | |||||
QAPP Information: | SWAMP QAPP (2008). | ||||
QAPP Information Reference(s): | |||||
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LOE ID: | 67222 | ||||
Pollutant: | Temperature, water | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Fish Spawning | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 1 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | SWAMP data indicates that the sample result exceeds the evaluation guideline value for Water Temperature (SSO). | ||||
Data Reference: | RWB5S SJR Trends FY0708 FY0809 | ||||
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 Water Board that such alteration in temperature does not adversely affect beneficial uses. (Water Quality Control Plan, Central Valley Region, Sacramento River Basin and San Joaquin River Basin) | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | The guideline used was the 2003 US EPA Region 10 Guidance for Pacific Northwest State and Tribal Temperature Water Quality Standards (USEPA, 2003). The document includes recommended temperature criteria for salmon and trout based on different life stages. The recommended temperature for salmon and trout smoltification is <16 degrees C for a 7DADM. The smoltification life stage occurs from river mile 52 (Merced River Hatchery) to river mile 0 (confluence with the San Joaquin River). This life stage occurs during Julian weeks 11 to 24, which is approximately March 15th through June 15th. | ||||
Guideline Reference: | EPA Region 10 Guidance for Pacific Northwest State and Tribal Temperature Water Quality Standards. EPA 910-B-03-002. U.S. Environmental Protection Agency Region 10 Office of Water, Seattle, WA. | ||||
Spatial Representation: | Data for this line of evidence was collected at one monitoring site [ Merced River @ River Road - 535MER546] | ||||
Temporal Representation: | Data was collected on 5/15/2008. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The SWAMP QAMP (2002) was used for data before Septemper 1, 2008 and SWAMP QAPP (2008) was thereafter. | ||||
QAPP Information Reference(s): | Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version) | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
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LOE ID: | 67235 | ||||
Pollutant: | Temperature, water | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Fish Spawning | ||||
Number of Samples: | 31 | ||||
Number of Exceedances: | 31 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Stream temperatures were measured by California Department of Fish and Game (CDFG) using data loggers (Stowaways, Tidbits and Hobo Temp Pros). The 7DADM was recorded weekly for each river mile. The Maximum 7DADM or the Maximum Weekly Maximum Temperature (MWMT) was calculated for each year. Based on the data provided, all 31 MWMT values exceeded the <16 degree C criteria in 2008 and 2009. | ||||
Data Reference: | Data for Hydromodification in Various Water Bodies in Region 5, 2006-2009. | ||||
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 Water Board that such alteration in temperature does not adversely affect beneficial uses. In determining compliance with the water quality objectives for temperature, appropriate averaging periods may be applied provided that beneficial uses will be fully protected. (Central Valley Regional Board Basin Plan, Pg. III-8.00, Water Quality Objectives) | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | The guideline used was the 2003 US EPA Region 10 Guidance for Pacific Northwest State and Tribal Temperature Water Quality Standards (USEPA, 2003). The document includes recommended temperature criteria for salmon and trout based on different life stages. The recommended temperature for salmon and trout smoltification is <16 degrees C for a 7DADM. The smoltification life stage occurs from river mile 52 (Merced River Hatchery) to river mile 0 (confluence with the San Joaquin River). This life stage occurs during Julian weeks 11 to 24, which is approximately March 15th through June 15th. | ||||
Guideline Reference: | EPA Region 10 Guidance for Pacific Northwest State and Tribal Temperature Water Quality Standards. EPA 910-B-03-002. U.S. Environmental Protection Agency Region 10 Office of Water, Seattle, WA. | ||||
Spatial Representation: | The adult migration life stage occurs from river mile 0 (confluence with the San Joaquin River) to river mile 52 (Merced River Hatchery). Samples were collected at the following monitoring locations: MRH-Merced River Hatchery MGST-Merced River (G Street Bridge) MUROB-Merced River (Upper Robinson) MROB-Merced River (Robinson) M59B-Merced River (Hwy 59 Bridge) MRAT-Merced River (Ratzlaff) MBRAT-Merced River (below Ratzlaff) MGAL-Merced River (Gallo Ranch Bridge) MRSHAF-Merced River at Shaffer Bridge MRSFB-Merced River near Santa Fe Bridge MRLIVING-Merced River above Livingston Spill M99-Merced River at Highway 99 Bridge MHAG2-Merced River at Haggaman Park RST access MASTVSP-Merced River above Stevinson Spill MBSTVSP-Merced River below Stevinson Spill MHFLD-Merced River (Hatfield Park) MRSJR-Merced River at San Joaquin River Confluence | ||||
Temporal Representation: | The smoltification life stage occurs during Julian weeks 11 to 24, which is approximately March 15th through June 15th. Data was collected during this life stage on a continuous basis (hourly intervals) in 2008 and 2009, although it should be noted that some stations did not have data collected during this time period. If there was no data collected during this time period, these stations were not counted in the assessment. | ||||
Environmental Conditions: | |||||
QAPP Information: | Data is supported by a Quality Assurance Project Plan (QAPP) pursuant to the requirements of 40 CFR 31.45 and are acceptable for use in developing the section 303(d) list. | ||||
QAPP Information Reference(s): | |||||
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LOE ID: | 67242 | ||||
Pollutant: | Temperature, water | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Fish Spawning | ||||
Number of Samples: | 31 | ||||
Number of Exceedances: | 31 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Stream temperatures were measured by California Department of Fish and Game (CDFG) using data loggers (Stowaways, Tidbits and Hobo Temp Pros). The 7DADM was recorded weekly for each river mile. The Maximum 7DADM or the Maximum Weekly Maximum Temperature (MWMT) was calculated for each year. Based on the data provided, all 31 MWMT values exceeded the <16 degree C criteria in 2008 and 2009. | ||||
Data Reference: | Data for Hydromodification in Various Water Bodies in Region 5, 2006-2009. | ||||
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 Water Board that such alteration in temperature does not adversely affect beneficial uses. In determining compliance with the water quality objectives for temperature, appropriate averaging periods may be applied provided that beneficial uses will be fully protected. (Central Valley Regional Board Basin Plan, Pg. III-8.00, Water Quality Objectives) | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | The guideline used was the 2003 US EPA Region 10 Guidance for Pacific Northwest State and Tribal Temperature Water Quality Standards (USEPA, 2003). The document includes recommended temperature criteria for salmon and trout based on different life stages. The recommended temperature for salmon and trout juvenile rearing is <16 degrees C for a 7DADM. The juvenile rearing life stage occurs from river mile 52 (Merced River Hatchery) to river mile 0 (confluence with the San Joaquin River). This life stage occurs during Julian weeks 11 to 24, which is approximately March 15th through June 15th. | ||||
Guideline Reference: | EPA Region 10 Guidance for Pacific Northwest State and Tribal Temperature Water Quality Standards. EPA 910-B-03-002. U.S. Environmental Protection Agency Region 10 Office of Water, Seattle, WA. | ||||
Spatial Representation: | The juvenile rearing life stage occurs from river mile 0 (confluence with the San Joaquin River) to river mile 52 (Merced River Hatchery). Samples were collected at the following monitoring locations: MRH-Merced River Hatchery MGST-Merced River (G Street Bridge) MUROB-Merced River (Upper Robinson) MROB-Merced River (Robinson) M59B-Merced River (Hwy 59 Bridge) MRAT-Merced River (Ratzlaff) MBRAT-Merced River (below Ratzlaff) MGAL-Merced River (Gallo Ranch Bridge) MRSHAF-Merced River at Shaffer Bridge MRSFB-Merced River near Santa Fe Bridge MRLIVING-Merced River above Livingston Spill M99-Merced River at Highway 99 Bridge MHAG2-Merced River at Haggaman Park RST access MASTVSP-Merced River above Stevinson Spill MBSTVSP-Merced River below Stevinson Spill MHFLD-Merced River (Hatfield Park) MRSJR-Merced River at San Joaquin River Confluence | ||||
Temporal Representation: | The juvenile rearing life stage occurs during Julian weeks 11 to 24, which is approximately March 15th through June 15th. Data was collected during this life stage on a continuous basis (hourly intervals) in 2008 and 2009, although it should be noted that some stations did not have data collected during this time period. If there was no data collected during this time period, these stations were not counted in the assessment. | ||||
Environmental Conditions: | |||||
QAPP Information: | Data is supported by a Quality Assurance Project Plan (QAPP) pursuant to the requirements of 40 CFR 31.45 and are acceptable for use in developing the section 303(d) list. | ||||
QAPP Information Reference(s): | |||||
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LOE ID: | 26541 | ||||
Pollutant: | Temperature, water | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Not Specified | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Aquatic Life Use: | Fish Migration | ||||
Number of Samples: | 0 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | QUALITATIVE (EVALUATED) ASSESSMENT - UNSPECIFIED | ||||
Data Used to Assess Water Quality: | Historically, spring-run and fall-run salmon and steelhead occurred in the Merced River. The spawning beds extended from the mouth of the river to Exchequer Dam, about 12 miles (G.H. Clark, 1929). Today, only the fall-run has survived. In 1852, Native Americans were observed harvesting salmon at Merced Falls. In November 1877, John Muir noted that salmon were abundant in deep pools. Unconfirmed reports suggest that both salmon and steelhead migrated as far up the South Fork as Wawona and in the mainstem as far as into Yosemite Valley. Reports from early residents along the river speak of high populations of fish coming up the river to spawn in the summer and fall.
In 1920, the Fish and Game Commission received a letter from a resident stating that there were fifty salmon in the past for each one now (1920). In 1928, a statement from Fish and Game said there were several hundred salmon in the fall. In 1961, the fall-run was described as poor. Estimates averaged about 250 salmon per year. By the end of the six year drought, 1986-1992, escapement populations drastically declined believed to be attributed to low flow and elevated water temperatures during adult immigation and juvenile (smolt) spring-out migration from the Merced River. Between 1993 and 1998, salmon escapement improved when flow and water temperature improved. However, with the higher spring flows and cooler spring water of 1998 and 1999, the population has steadily declined since 2000. In 2000, fall-run salmon escapement numbers (over 13,000 spawners) have dramatically declined to only 2,000 spawners in 2006, a drop of about 84% below the year 2000 peak abundance. There is a strong correlation between annual spring flow magnitude and future year adult production (Mesick and Marston 2007). As spring flow increases, smolt survival increases (CDFG Annual Reports). However, as temperatures begin to rise while salmon smolts out migrate, juveniles are still trying to migrate from the upper reach of the Merced River to the lower reaches of the Merced River, harming both critical life stages (Merced Irrigation District 1999-2005). In addition to warm spring temperatures, the Department of Fish and Game submitted data to the Regional Water Quality Control Board regarding warm water temperatures present in the lower Merced River during the fall adult upstream migration season for the years 1998 thru 2005 (Tables 9 and 10 in CDFGĀæs Letter to the RWQCB, 2007). Also, the Department of Fish and Game submitted data regarding warm water temperatures present in the lower Merced River spawning habitat reaches during the first half of the spawning season for years 1998 thru 2005 (Table 13 in CDFGĀæs Letter to the RWQCB, 2007). Steelhead in the Merced River are listed winter run. Juvenile rainbow trout have been caught in rotary screw traps out-migrating the Merced River. Anecdotal reports by anglers suggest that steelhead populations are good following years where summer rearing conditions are good (e.g. presence of cold water temperatures). State and Federal agencies believe their abundance trends mirrors those of salmon causing them to be listed as threatened in the Central Valley. The Department of Fish and Game submitted data to the Regional Water Quality Control Board regarding warm water temperatures present in the lower Merced River juvenile steelhead rearing reaches during the summer for years 1999 thru 2005 (Table 20 in CDFGĀæs Letter to the RWQCB, 2007). |
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Data Reference: | Cover letter, data and information regarding elevated water temperatures in the San Joaquin, Merced, Stanislaus, and Tuolumne rivers | ||||
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 Water Board that such alteration in temperature does not adversely affect beneficial uses.
In determining compliance with the water quality objectives for temperature, appropriate averaging periods may be applied provided that beneficial uses will be fully protected. (Central Valley Regional Board Basin Plan, Pg. III-8.00, Water Quality Objectives) |
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Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | In the absence of necessary data to interpret numeric water quality objectives, recent temperature monitoring data shall be compared to the temperature requirements of aquatic life in the water segment. In many cases, fisheries, particularly salmonids, represent the beneficial uses most sensitive to temperature. Information on current and historic conditions and distribution of sensitive beneficial uses (e.g., fishery resources) in the water segment is necessary, as well as recent temperature data reflective of conditions experienced by the most sensitive life stage of the aquatic life species. If temperature data from past (historic) periods corresponding to times when the beneficial use was fully supported are not available, information about presence/absence or abundance of sensitive aquatic life species shall be used to infer past (historic) temperature conditions if loss of habitat, diversions, toxic spills, and other factors are also listed. (SWRCB, 2004) | ||||
Guideline Reference: | Water Quality Control Policy For Developing California's Clean Water Act Section 303(d) List. Sacramento, CA: State Water Resources Control Board, California Environmental Protection Agency. | ||||
Spatial Representation: | Merced River | ||||
Temporal Representation: | Information references from year 1929 to 2006. | ||||
Environmental Conditions: | |||||
QAPP Information: | San Joaquin River Fall-Run Chinook Salmon and Steelhead Rainbow Trout Historical Population Trend Summary. Dean Marston. September 2007. | ||||
QAPP Information Reference(s): | |||||
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LOE ID: | 26233 | ||||
Pollutant: | Temperature, water | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Not Specified | ||||
Fraction: | None | ||||
Beneficial Use: | Fish Migration | ||||
Number of Samples: | 128 | ||||
Number of Exceedances: | 105 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Stream temperatures were measured by California Department of Fish and Game (CDFG) using data loggers (Stowaways, Tidbits and Hobo Temp Pros). Monitoring occurred from 1991 to 2007 depending on the monitoring station, identified by a river mile. The 7DADM was recorded weekly for each river mile.
The maximum 7DADM value was calculated for each year. Based on the data provided, 105 out of 128 maximum 7DADM values exceeded the <18oC criteria from 1991 to 2007. |
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Data Reference: | USEPA Region 9 data summary for addition of temperature to California 2010 303(d) list for Merced River, Lower (McSwain Reservoir to San Joaquin River) | ||||
Access and DSS database files of water temperature data, one each for the San Joaquin, Merced, Stanislaus, and Tuolumne rivers | |||||
Cover letter, data and information regarding elevated water temperatures in the San Joaquin, Merced, Stanislaus, and Tuolumne rivers | |||||
USEPA Partial Approval Disapproval Letter and enclosures for California's 2008-2010 303(d) List | |||||
USEPA Final Decision Letter with enclosures and responsiveness summary regarding waters added to California's 2008-2010 303(d) List | |||||
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 Water Board that such alteration in temperature does not adversely affect beneficial uses.
In determining compliance with the water quality objectives for temperature, appropriate averaging periods may be applied provided that beneficial uses will be fully protected. (Central Valley Regional Board Basin Plan, Pg. III-8.00, Water Quality Objectives) |
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Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | The guideline used was the 2003 US EPA Region 10 Guidance for Pacific Northwest State and Tribal Temperature Water Quality Standards (USEPA, 2003). The document includes recommended temperature criteria for salmon and trout based on different life stages. The recommended temperature for salmon and trout adult migration is <18oC for a 7DADM. The adult migration life stage occurs from river mile 0 (confluence with the San Joaquin River) to river mile 52 (Merced River Hatchery). This life stage occurs during Julian weeks 36 through 43, which is approximately September 1st through October 31st. | ||||
Guideline Reference: | EPA Region 10 Guidance for Pacific Northwest State and Tribal Temperature Water Quality Standards. EPA 910-B-03-002. U.S. Environmental Protection Agency Region 10 Office of Water, Seattle, WA. | ||||
Spatial Representation: | The adult migration life stage occurs from river mile 0 (confluence with the San Joaquin River) to river mile 52 (Merced River Hatchery). Stream temperatures were monitored at the following stream locations during the adult migration life stage: River Miles 0 (confluence with the San Joaquin River), 1 (Hatfield Park), 4 (above and below Stevinson Spill), 12 (NRS), 13 (Haggaman Park), 21 (above Livingston Spill), 22 (Hwy 99 Bridge), 28 (near Santa Fe Bridge), 30.5 (Dry Creek), 31 (Shaffer Bridge), 39 (Gallo Ranch Bridge), 40 (on the Ratzlaff property), 41 (Hwy 59 Bridge), 42 (NRS), 43 (Robinson), 44 (upper Robinson), 46 (G Street Bridge), 47 (NRS) and 52 (Merced River Hatchery). | ||||
Temporal Representation: | The adult migration life stage occurs during Julian weeks 36 through 43, which is approximately September 1st through October 31st. Data was collected during this life stage on a continuous basis (hourly intervals) from 1991 through 2007, depending on the station and year monitored. Refer to the CDFG 2007 report (Gordus, 2007) for specific years for each location. | ||||
Environmental Conditions: | |||||
QAPP Information: | Data is supported by a Quality Assurance Project Plan (QAPP) pursuant to the requirements of 40 CFR 31.45 and are acceptable for use in developing the section 303(d) list. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 26537 | ||||
Pollutant: | Temperature, water | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Not Specified | ||||
Fraction: | None | ||||
Beneficial Use: | Fish Spawning | ||||
Number of Samples: | 96 | ||||
Number of Exceedances: | 95 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Stream temperatures were measured by CDFG using data loggers (Stowaways, Tidbits and Hobo Temp Pros). Monitoring occurred from 1991 to 2007 depending on the monitoring station, identified by a river mile. The 7DADM was recorded weekly for each river mile. The maximum 7DADM value was calculated for each year. Based on the data provided, 95 out of 96 maximum 7DADM values exceeded the <13 degrees C criteria from 1991 to 2007. | ||||
Data Reference: | USEPA Region 9 data summary for addition of temperature to California 2010 303(d) list for Merced River, Lower (McSwain Reservoir to San Joaquin River) | ||||
Access and DSS database files of water temperature data, one each for the San Joaquin, Merced, Stanislaus, and Tuolumne rivers | |||||
Cover letter, data and information regarding elevated water temperatures in the San Joaquin, Merced, Stanislaus, and Tuolumne rivers | |||||
USEPA Partial Approval Disapproval Letter and enclosures for California's 2008-2010 303(d) List | |||||
USEPA Final Decision Letter with enclosures and responsiveness summary regarding waters added to California's 2008-2010 303(d) List | |||||
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 Water Board that such alteration in temperature does not adversely affect beneficial uses.
In determining compliance with the water quality objectives for temperature, appropriate averaging periods may be applied provided that beneficial uses will be fully protected. (Central Valley Regional Board Basin Plan, Pg. III-8.00, Water Quality Objectives) |
||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | The guideline used was the 2003 US EPA Region 10 Guidance for Pacific Northwest State and Tribal Temperature Water Quality Standards (USEPA, 2003). The document includes recommended temperature criteria for salmon and trout based on different life stages. The recommended temperature for salmon and trout spawning is <13 degrees C for a 7DADM. The spawning life stage occurs from river mile 28 (near Santa Fe Bridge) to river mile 52 (Merced River Hatchery). This life stage occurs during Julian weeks 40 through 50, which is approximately October 1st through December 15th. | ||||
Guideline Reference: | EPA Region 10 Guidance for Pacific Northwest State and Tribal Temperature Water Quality Standards. EPA 910-B-03-002. U.S. Environmental Protection Agency Region 10 Office of Water, Seattle, WA. | ||||
Spatial Representation: | The spawning life stage occurs from river mile 28 (near Santa Fe Bridge) to river mile 52 (Merced River Hatchery). Stream temperatures were monitored at the following stream locations during the spawning life stage: River Miles 28 (near Santa Fe Bridge), 30.5 (Dry Creek above Merced River), 31 (Shaffer Bridge), 39 (Gallo Ranch Bridge), 40 (on the Ratzlaff property), 41 (Hwy 59 Bridge), 42 (NRS), 43 (Robinson), 44 (upper Robinson), 46 (G Street Bridge), 47 (NRS), and 52 (Merced River Hatchery). | ||||
Temporal Representation: | The spawning life stage occurs during Julian Weeks 40 through 50, which is approximately October 1st through December 15th. Data was collected during this life stage on a continuous basis (hourly intervals) from 1991 through 2007, depending on the station and year monitored. Refer to the CDFG 2007 report (Gordus, 2007) for specific years for each location. | ||||
Environmental Conditions: | |||||
QAPP Information: | Data is supported by a Quality Assurance Project Plan (QAPP) pursuant to the requirements of 40 CFR 31.45 and are acceptable for use in developing the section 303(d) list. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 26540 | ||||
Pollutant: | Temperature, water | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Not Specified | ||||
Fraction: | None | ||||
Beneficial Use: | Fish Spawning | ||||
Number of Samples: | 47 | ||||
Number of Exceedances: | 31 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Stream temperatures were measured by CDFG using data loggers (Stowaways, Tidbits and Hobo Temp Pros). Monitoring occurred from 1992 to 2007 depending on the monitoring station, identified by a river mile. The 7DADM was recorded weekly for each river mile. The maximum 7DADM value was calculated for each year. Based on the data provided, 31 out of 47 maximum 7DADM values exceeded the <18 degrees C criteria from 1992 to 2007. | ||||
Data Reference: | Access and DSS database files of water temperature data, one each for the San Joaquin, Merced, Stanislaus, and Tuolumne rivers | ||||
Cover letter, data and information regarding elevated water temperatures in the San Joaquin, Merced, Stanislaus, and Tuolumne rivers | |||||
USEPA Partial Approval Disapproval Letter and enclosures for California's 2008-2010 303(d) List | |||||
USEPA Final Decision Letter with enclosures and responsiveness summary regarding waters added to California's 2008-2010 303(d) List | |||||
USEPA Region 9 data summary for addition of temperature to California 2010 303(d) list for Merced River, Lower (McSwain Reservoir to San Joaquin River) | |||||
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 Water Board that such alteration in temperature does not adversely affect beneficial uses.
In determining compliance with the water quality objectives for temperature, appropriate averaging periods may be applied provided that beneficial uses will be fully protected. (Central Valley Regional Board Basin Plan, Pg. III-8.00, Water Quality Objectives) |
||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | The guideline used was the 2003 US EPA Region 10 Guidance for Pacific Northwest State and Tribal Temperature Water Quality Standards (USEPA, 2003). The document includes recommended temperature criteria for salmon and trout based on different life stages. The recommended temperature for steelhead summer rearing is <18 degrees C for a 7DADM. The steelhead summer rearing life stage occurs from river mile 42 (Hwy 59 Bridge) to river mile 52 (Merced River Hatchery). This life stage occurs during Julian weeks 24 through 37, which is approximately June 15th through September 15th. | ||||
Guideline Reference: | EPA Region 10 Guidance for Pacific Northwest State and Tribal Temperature Water Quality Standards. EPA 910-B-03-002. U.S. Environmental Protection Agency Region 10 Office of Water, Seattle, WA. | ||||
Spatial Representation: | The steelhead summer rearing life stage occurs from river mile 42 (Hwy 59 Bridge) to river mile 52 (Merced River Hatchery). Stream temperatures were monitored at the following stream locations during the steelhead summer rearing life stage: River Miles 42 (Hwy 59 Bridge), 43 (Robinson), 44 (upper Robinson), 46 (G Street Bridge), 47 (NRS), and 52 (Merced River Hatchery). | ||||
Temporal Representation: | The steelhead summer rearing life stage occurs during Julian weeks 24 through 37, which is approximately June 15th through September 15th. Data was collected during this life stage on a continuous basis (hourly intervals) from 1992 through 2007, depending on the station and year monitored. Refer to the CDFG 2007 report (Gordus, 2007) for specific years for each location. | ||||
Environmental Conditions: | |||||
QAPP Information: | Data is supported by a Quality Assurance Project Plan (QAPP) pursuant to the requirements of 40 CFR 31.45 and are acceptable for use in developing the section 303(d) list. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 26539 | ||||
Pollutant: | Temperature, water | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Not Specified | ||||
Fraction: | None | ||||
Beneficial Use: | Fish Spawning | ||||
Number of Samples: | 124 | ||||
Number of Exceedances: | 101 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Stream temperatures were measured by CDFG using data loggers (Stowaways, Tidbits and Hobo Temp Pros). Monitoring occurred from 1992 to 2007 depending on the monitoring station, identified by a river mile. The 7DADM was recorded weekly for each river mile. The maximum 7DADM value was calculated for each year. Based on the data provided, 101 out of 124 maximum 7DADM values exceeded the <16 degrees C criteria from 1992 to 2007. | ||||
Data Reference: | USEPA Region 9 data summary for addition of temperature to California 2010 303(d) list for Merced River, Lower (McSwain Reservoir to San Joaquin River) | ||||
Access and DSS database files of water temperature data, one each for the San Joaquin, Merced, Stanislaus, and Tuolumne rivers | |||||
Cover letter, data and information regarding elevated water temperatures in the San Joaquin, Merced, Stanislaus, and Tuolumne rivers | |||||
USEPA Partial Approval Disapproval Letter and enclosures for California's 2008-2010 303(d) List | |||||
USEPA Final Decision Letter with enclosures and responsiveness summary regarding waters added to California's 2008-2010 303(d) List | |||||
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 Water Board that such alteration in temperature does not adversely affect beneficial uses.
In determining compliance with the water quality objectives for temperature, appropriate averaging periods may be applied provided that beneficial uses will be fully protected. (Central Valley Regional Board Basin Plan, Pg. III-8.00, Water Quality Objectives) |
||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | The guideline used was the 2003 US EPA Region 10 Guidance for Pacific Northwest State and Tribal Temperature Water Quality Standards (USEPA, 2003). The document includes recommended temperature criteria for salmon and trout based on different life stages. The recommended temperature for salmon and trout juvenile rearing is <16 degrees C for a 7DADM. The juvenile rearing life stage occurs from river mile 52 (Merced River Hatchery) to river mile 0 (confluence with the San Joaquin River). This life stage occurs during Julian weeks 11 to 24, which is approximately March 15th through June 15th. | ||||
Guideline Reference: | EPA Region 10 Guidance for Pacific Northwest State and Tribal Temperature Water Quality Standards. EPA 910-B-03-002. U.S. Environmental Protection Agency Region 10 Office of Water, Seattle, WA. | ||||
Spatial Representation: | The juvenile rearing life stage occurs from river mile 52 (Merced River Hatchery) to river mile 0 (confluence with the San Joaquin River). Stream temperatures were monitored at the following stream locations during the juvenile rearing life stage: River Miles 0 (confluence with the San Joaquin River), 1 (Hatfield Park), 4 (below and above Stevinson Spill), 12 (NRS), 13 (Haggaman Park), 21 (above Livingston Spill), 22 (Hwy 99 Bridge), 28 (near Santa Fe Bridge), 30.5 (Dry Creek above Merced River), 31 (Shaffer Bridge), 39 (Gallo Ranch Bridge), 40 (on the Ratzlaff property), 41 (Hwy 59 Bridge), 42 (Hwy 59 Bridge), 43 (Robinson), 44 (upper Robinson), 46 (G Street Bridge), 47 (NRS), and 52 (Merced River Hatchery). | ||||
Temporal Representation: | The juvenile rearing life stage occurs during Julian weeks 11 to 24, which is approximately March 15th through June 15th. Data was collected during this life stage on a continuous basis (hourly intervals) from 1992 through 2007, depending on the station and year monitored. Refer to the CDFG 2007 report (Gordus, 2007) for specific years for each location. | ||||
Environmental Conditions: | |||||
QAPP Information: | Data is supported by a Quality Assurance Project Plan (QAPP) pursuant to the requirements of 40 CFR 31.45 and are acceptable for use in developing the section 303(d) list. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 26538 | ||||
Pollutant: | Temperature, water | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Not Specified | ||||
Fraction: | None | ||||
Beneficial Use: | Fish Spawning | ||||
Number of Samples: | 124 | ||||
Number of Exceedances: | 101 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Stream temperatures were measured by CDFG using data loggers (Stowaways, Tidbits and Hobo Temp Pros). Monitoring occurred from 1992 to 2007 depending on the monitoring station, identified by a river mile. The 7DADM was recorded weekly for each river mile. The maximum 7DADM value was calculated for each year. Based on the data provided, 101 out of 124 maximum 7DADM values exceeded the <16 degrees C criteria from 1992 to 2007. | ||||
Data Reference: | USEPA Region 9 data summary for addition of temperature to California 2010 303(d) list for Merced River, Lower (McSwain Reservoir to San Joaquin River) | ||||
Access and DSS database files of water temperature data, one each for the San Joaquin, Merced, Stanislaus, and Tuolumne rivers | |||||
Cover letter, data and information regarding elevated water temperatures in the San Joaquin, Merced, Stanislaus, and Tuolumne rivers | |||||
USEPA Partial Approval Disapproval Letter and enclosures for California's 2008-2010 303(d) List | |||||
USEPA Final Decision Letter with enclosures and responsiveness summary regarding waters added to California's 2008-2010 303(d) List | |||||
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 Water Board that such alteration in temperature does not adversely affect beneficial uses.
In determining compliance with the water quality objectives for temperature, appropriate averaging periods may be applied provided that beneficial uses will be fully protected. (Central Valley Regional Board Basin Plan, Pg. III-8.00, Water Quality Objectives) |
||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | The guideline used was the 2003 US EPA Region 10 Guidance for Pacific Northwest State and Tribal Temperature Water Quality Standards (USEPA, 2003). The document includes recommended temperature criteria for salmon and trout based on different life stages. The recommended temperature for salmon and trout smoltification is <16 degrees C for a 7DADM. The smoltification life stage occurs from river mile 52 (Merced River Hatchery) to river mile 0 (confluence with the San Joaquin River). This life stage occurs during Julian weeks 11 to 24, which is approximately March 15th through June 15th. | ||||
Guideline Reference: | EPA Region 10 Guidance for Pacific Northwest State and Tribal Temperature Water Quality Standards. EPA 910-B-03-002. U.S. Environmental Protection Agency Region 10 Office of Water, Seattle, WA. | ||||
Spatial Representation: | The smoltification life stage occurs from river mile 52 (Merced River Hatchery) to river mile 0 (confluence with the San Joaquin River). Stream temperatures were monitored at the following stream locations during the smoltification life stage: River Miles 0 (confluence with the San Joaquin River), 1 (Hatfield Park), 4 (below and above Stevinson Spill), 12 (NRS), 13 (Haggaman Park), 21 (above Livingston Spill), 22 (Hwy 99 Bridge), 28 (near Santa Fe Bridge), 30.5 (Dry Creek above Merced River), 31, (Shaffer Bridge), 39 (Gallo Ranch Bridge), 40 (on the Ratzlaff property), 41 (Hwy 59 Bridge), 42 (Hwy 59 Bridge), 43 (Robinson), 44 (upper Robinson), 46 (G Street Bridge), 47 (NRS), and 52 (Merced River Hatchery). | ||||
Temporal Representation: | The smoltification life stage occurs during Julian weeks 11 to 24, which is approximately March 15th through June 15th. Data was collected during this life stage on a continuous basis (hourly intervals) from 1992 through 2007, depending on the station and year monitored. Refer to the CDFG 2007 report (Gordus, 2007) for specific years for each location. | ||||
Environmental Conditions: | |||||
QAPP Information: | Data is supported by a Quality Assurance Project Plan (QAPP) pursuant to the requirements of 40 CFR 31.45 and are acceptable for use in developing the section 303(d) list. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 67219 | ||||
Pollutant: | Temperature, water | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | SWAMP data indicates that 0 of the sample results exceed the evaluation guideline value for Water Temperature. | ||||
Data Reference: | RWB5S SJR Trends FY0708 FY0809 | ||||
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 Water Board that such alteration in temperature does not adversely affect beneficial uses. (Water Quality Control Plan, Central Valley Region, Sacramento River Basin and San Joaquin River Basin) | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
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). | ||||
Guideline Reference: | Inland Fishes of California (1976) | ||||
Spatial Representation: | Data for this line of evidence was collected at one monitoring site [ Merced River @ River Road - 535MER546] | ||||
Temporal Representation: | Data was collected on 5/15/2008. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The SWAMP QAPP (2008) was followed. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
|
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LOE ID: | 67220 | ||||
Pollutant: | Temperature, water | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 6 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | SWAMP data indicates that 0 of 6 sample results exceed the evaluation guideline value for Water Temperature. | ||||
Data Reference: | RWB5 Safe to Swim FY0708 FY0809 | ||||
SWAMP Data: | 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 Water Board that such alteration in temperature does not adversely affect beneficial uses. (Water Quality Control Plan, Central Valley Region, Sacramento River Basin and San Joaquin River Basin) | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
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). | ||||
Guideline Reference: | Inland Fishes of California (1976) | ||||
Spatial Representation: | Data for this line of evidence was collected at two monitoring sites [ Merced River @ Merced Falls Gauging St. - 535MER209, Merced River at Henderson Park - 535MER210] | ||||
Temporal Representation: | Data was collected over the time period 8/27/2008-9/3/2008. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The SWAMP QAMP (2002) was used for data before Septemper 1, 2008 and SWAMP QAPP (2008) was thereafter. | ||||
QAPP Information Reference(s): | Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version) | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
|
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LOE ID: | 67221 | ||||
Pollutant: | Temperature, water | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 41 | ||||
Number of Exceedances: | 18 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed Ag Waiver data for Merced River, Lower (McSwain Reservoir to San Joaquin River) to determine beneficial use support and results are as follows: 18 of 41 samples exceed the criterion for Water Temperature. | ||||
Data Reference: | Data for Various Pollutants in East San Joaquin, 2004-2009. | ||||
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 Water Board that such alteration in temperature does not adversely affect beneficial uses (Sacramento-San Juoaquin River Basin Plans). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
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). | ||||
Guideline Reference: | Inland Fishes of California (1976) | ||||
Spatial Representation: | Data for this line of evidence for Merced River, Lower (McSwain Reservoir to San Joaquin River) was collected at 1 monitoring site [Merced River @ Santa Fe - 535XMRSFD] | ||||
Temporal Representation: | Data was collected over the time period 2/12/2007-7/20/2010. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0 was followed. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0. | ||||
|
|||||
LOE ID: | 67243 | ||||
Pollutant: | Temperature, water | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Fish Migration | ||||
Number of Samples: | 2 | ||||
Number of Exceedances: | 1 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | One of the 2 samples exceeded the evaluation guideline. | ||||
Data Reference: | RWB5 Safe to Swim FY0708 FY0809 | ||||
SWAMP Data: | 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 Water Board that such alteration in temperature does not adversely affect beneficial uses. In determining compliance with the water quality objectives for temperature, appropriate averaging periods may be applied provided that beneficial uses will be fully protected. (Central Valley Regional Board Basin Plan, Pg. III-8.00, Water Quality Objectives) | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | The guideline used was the 2003 US EPA Region 10 Guidance for Pacific Northwest State and Tribal Temperature Water Quality Standards (USEPA, 2003). The document includes recommended temperature criteria for salmon and trout based on different life stages. The recommended temperature for salmon and trout adult migration is <18oC for a 7DADM. The adult migration life stage occurs from river mile 0 (confluence with the San Joaquin River) to river mile 52 (Merced River Hatchery). This life stage occurs during Julian weeks 36 through 43, which is approximately September 1st through October 31st. | ||||
Guideline Reference: | EPA Region 10 Guidance for Pacific Northwest State and Tribal Temperature Water Quality Standards. EPA 910-B-03-002. U.S. Environmental Protection Agency Region 10 Office of Water, Seattle, WA. | ||||
Spatial Representation: | Samples were collected from the Merced River @ Merced Falls Gauging St. (535MER209) and Merced River at Henderson Park (535MER210) stations. The exceedence occurred at the Merced River at Henderson Park (535MER210) station. | ||||
Temporal Representation: | Samples were collected on 9/3/2008. | ||||
Environmental Conditions: | |||||
QAPP Information: | SWAMP QAPP (2008). | ||||
QAPP Information Reference(s): | |||||
DECISION ID |
72893 |
Region 5 |
Merced River, Lower (McSwain Reservoir to San Joaquin River) |
||
Pollutant: | Toxicity |
Final Listing Decision: | Do Not Delist from 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | Do Not Delist from 303(d) list (TMDL required list)(2016) |
Revision Status | Original |
Sources: | A Source Unknown |
Expected TMDL Completion Date: | 2023 |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for removal from the CWA section 303(d) List under section 4.1 of the Listing Policy. Under this section a single line of evidence is necessary to assess listing status.
Eleven lines of evidence are available in the administrative record to assess pollutant. Seven of 81 water samples exceed the evaluation guideline for toxicity in water. The toxicity tests included survival of Ceriodaphnia dubia, survival of Pimephales promelas, and total cell count of Selenastrum capricornutum. Also, 5 of 23 samples tested with Pimephales promelas were toxic and violated the narrative toxicity objective and zero of the 11 samples tested with Ceriodaphnia dubia were toxic and violated the narrative toxicity objective. Additionally, zero of 26 samples exceed the evaluation guideline for Hyalella azteca. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against removing this water segment-pollutant combination from the CWA section 303(d) List. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. Seven of 81 water samples exceed the evaluation guideline for toxicity in water. The toxicity tests included survival of Ceriodaphnia dubia, survival of Pimephales promelas, and total cell count of Selenastrum capricornutum. This does exceed the allowable frequency listed in Table 4.1 of the Listing Policy. 4. Five of 23 samples tested with Pimephales promelas were toxic and violated the narrative toxicity objective and this exceeds the allowable frequency listed in Table 4.1 of the Listing Policy. 5. Pursuant to section 4.11 of the Listing Policy, no additional data and information are available indicating that standards are met. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be removed from the section 303(d) list because applicable water quality standards for the pollutant are not being exceeded. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | |
|
|||||
LOE ID: | 67084 | ||||
Pollutant: | Toxicity | ||||
LOE Subgroup: | Toxicity | ||||
Matrix: | Sediment | ||||
Fraction: | None | ||||
Beneficial Use: | Cold 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 evaluate sediment toxicity. The sample did not exhibit significant toxicity. The toxicity test included survival and growth of Hyalella azteca. | ||||
Data Reference: | Statewide Stream Pollution Trends Study 2008 | ||||
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, animal, or aquatic life. Region 5 Basin Plan. | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | Toxicity is defined as a statistically significant effect in the sample exposure compared to the control using EPA-recommended hypothesis testing. | ||||
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 sample was collected at station 535MER546. | ||||
Temporal Representation: | The sample was collected in July 2008. | ||||
Environmental Conditions: | |||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
|
|||||
LOE ID: | 23065 | ||||
Pollutant: | Toxicity | ||||
LOE Subgroup: | Toxicity | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Aquatic Life Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 12 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | TOXICITY TESTING | ||||
Data Used to Assess Water Quality: | None of the 12 samples tested with Pimephales promelas were toxic and violated the narrative toxicity objective. | ||||
Data Reference: | Monitoring Data from the Surface Water Ambient Monitoring Program (SWAMP), San Joaquin River Basin - 2007 Data Review | ||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations that produce detrimental physiological responses in human, plant, animal, or aquatic life. This objective applies regardless of whether the toxicity is caused by a single substance or the interactive effect of multiple substances. (CVRWQCB, 2007) | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | Statistically significant difference from control using a Fisher's Exact test with 4-day acute-style toxicity tests. | ||||
Guideline Reference: | Methods for Measuring the Acute Toxicity of Effluents and Receiving Waters to Freshwater and Marine Organisms, Fifth Edition. U.S. Environmental Protection Agency Office of Water, Washington, DC EPA-821-R-02-012 | ||||
Spatial Representation: | Samples were collected from Merced River at River Road. | ||||
Temporal Representation: | Samples were collected from October 2000 to November 2002. | ||||
Environmental Conditions: | |||||
QAPP Information: | Data quality: Excellent. Monitoring was conducted in accordance with the State Water Resources Control Board's Quality Assurance Program Plan for the State of California's Surface Water Ambient Monitoring Program. | ||||
QAPP Information Reference(s): | Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version) | ||||
|
|||||
LOE ID: | 67085 | ||||
Pollutant: | Toxicity | ||||
LOE Subgroup: | Toxicity | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 39 | ||||
Number of Exceedances: | 6 | ||||
Data and Information Type: | TOXICITY TESTING | ||||
Data Used to Assess Water Quality: | Thirty-nine samples were collected to evaluate water toxicity. Six of the samples exhibited significant toxicity (Ceriodaphnia dubia, 5 samples and Selenastrum capricornutum, 1 sample). The toxicity tests included survival of Ceriodaphnia dubia, survival of Pimephales promelas, and total cell count of Selenastrum capricornutum. One sample can have multiple toxicity test results but will be counted only once. | ||||
Data Reference: | Data for Various Pollutants in East San Joaquin, 2004-2009. | ||||
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 5 Basin Plan. | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | Toxicity is defined as a statistically significant effect in the sample exposure compared to the control using EPA-recommended hypothesis testing. For SWAMP data exceedances are counted with the significant effect code SL. SL is defined as the result being significant compared to the negative control based on a statistical test, less than stated the alpha level, AND less than the evaluation threshold. This data set reports a simple pass/fail (Yes/NO) code to report toxicity that is equivalent to the SWAMP SL code. | ||||
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 at Merced River at Santa Fe. | ||||
Temporal Representation: | The samples were collected from July 2004 to September 2008 and one sample in January 2010. | ||||
Environmental Conditions: | |||||
QAPP Information: | Data was collected under the Quality Assurance Project Plan For Monitoring By The East San Joaquin Water Quality Coalition. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 23063 | ||||
Pollutant: | Toxicity | ||||
LOE Subgroup: | Toxicity | ||||
Matrix: | Sediment | ||||
Fraction: | Total | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Aquatic Life Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | TOXICITY TESTING | ||||
Data Used to Assess Water Quality: | One sample tested with Hyalella azteca was not toxic nor did it violate the narrative toxicity objective. | ||||
Data Reference: | Monitoring Data from the Surface Water Ambient Monitoring Program (SWAMP), San Joaquin River Basin - 2007 Data Review | ||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations that produce detrimental physiological responses in human, plant, animal, or aquatic life. This objective applies regardless of whether the toxicity is caused by a single substance or the interactive effect of multiple substances. (CVRWQCB, 2007) | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | Statistically significant difference from control using a t-test with 10-day Hyalella azteca sediment toxicity tests. | ||||
Guideline Reference: | Methods for Measuring the Toxicity and Bioaccumulation of Sediment-associated Contaminants with Freshwater Invertebrates, Second Edition. U.S. Environmental Protection Agency Office of Research and Development, Duluth, MI , U.S. Environmental Protection Agency Office of Water, Washington, DC EPA-600/R-99/064 | ||||
Spatial Representation: | Samples were collected from Merced River at River Road | ||||
Temporal Representation: | The sample was collected in May 2002 | ||||
Environmental Conditions: | |||||
QAPP Information: | Data quality: Excellent. Monitoring was conducted in accordance with the State Water Resources Control Board's Quality Assurance Program Plan for the State of California's Surface Water Ambient Monitoring Program. | ||||
QAPP Information Reference(s): | Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version) | ||||
|
|||||
LOE ID: | 23080 | ||||
Pollutant: | Toxicity | ||||
LOE Subgroup: | Toxicity | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Aquatic Life Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 11 | ||||
Number of Exceedances: | 5 | ||||
Data and Information Type: | TOXICITY TESTING | ||||
Data Used to Assess Water Quality: | Five of the 11 samples tested with Pimephales promelas were toxic and violated the narrative toxicity objective. Fiver samples collected at River Road exhibited a statistically significant decrease in survival compared to the control. The sample dates and percent of control (in parentheses) are as follows:29 March 2005 (63)26 May 2005 (67)25 August 2005 (87)27 October 2005 (74)29 November 2005 (44) | ||||
Data Reference: | Monitoring Data from the Surface Water Ambient Monitoring Program (SWAMP), San Joaquin River Basin - 2007 Data Review | ||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations that produce detrimental physiological responses in human, plant, animal, or aquatic life. This objective applies regardless of whether the toxicity is caused by a single substance or the interactive effect of multiple substances. (CVRWQCB, 2007) | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | Statistically significant difference from control using a Fisher's Exact test with 7-day chronic-style toxicity tests. | ||||
Guideline Reference: | Short-term Methods for Estimating the Chronic Toxicity of Effluents and Receiving Waters to Freshwater and Marine Organisms, Fourth Edition. U.S. Environmental Protection Agency Office of Water, Washington, DC EPA-821-R-02-013 | ||||
Spatial Representation: | Samples were collected from Merced River at River Road. | ||||
Temporal Representation: | Samples were collected from November 2004 to November 2005. | ||||
Environmental Conditions: | |||||
QAPP Information: | Data quality: Excellent. Monitoring was conducted in accordance with the State Water Resources Control Board's Quality Assurance Program Plan for the State of California's Surface Water Ambient Monitoring Program. | ||||
QAPP Information Reference(s): | Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version) | ||||
|
|||||
LOE ID: | 59176 | ||||
Pollutant: | Toxicity | ||||
LOE Subgroup: | Toxicity | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 7 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | TOXICITY TESTING | ||||
Data Used to Assess Water Quality: | Seven samples were collected to evaluate sediment toxicity. None of the samples exhibited significant toxicity. The toxicity tests included survival of Hyalella azteca. One sample can have multiple toxicity test results but will be counted only once. One sample is defined as being collected on the same day at the same location with the same lab sample id (if provided). | ||||
Data Reference: | Data for Various Pollutants in East San Joaquin, 2004-2009. | ||||
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 5 Basin Plan. | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | Toxicity is defined as a statistically significant effect in the sample exposure compared to the control using EPA-recommended hypothesis testing. For SWAMP data exceedances are counted using the significant effect code: S equals significant, SG equals significantly greater and SL equals significantly lower. If a sample has any one of these codes, it will be considered an exceedance. | ||||
Guideline Reference: | Methods for Measuring the Toxicity and Bioaccumulation of Sediment-associated Contaminants with Freshwater Invertebrates, Second Edition. U.S. Environmental Protection Agency Office of Research and Development, Duluth, MI , U.S. Environmental Protection Agency Office of Water, Washington, DC EPA-600/R-99/064 | ||||
Spatial Representation: | The samples were collected at Merced River at Santa Fe. | ||||
Temporal Representation: | The samples were collected from August 2004 to August 2008. | ||||
Environmental Conditions: | |||||
QAPP Information: | Data was collected under the Quality Assurance Project Plan For Monitoring By The East San Joaquin Water Quality Coalition. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0. | ||||
|
|||||
LOE ID: | 23061 | ||||
Pollutant: | Toxicity | ||||
LOE Subgroup: | Toxicity | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Aquatic Life Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 11 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | TOXICITY TESTING | ||||
Data Used to Assess Water Quality: | Zero of the 11 samples tested with Ceriodaphnia dubia were toxic and violated the narrative toxicity objective. | ||||
Data Reference: | Monitoring Data from the Surface Water Ambient Monitoring Program (SWAMP), San Joaquin River Basin - 2007 Data Review | ||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations that produce detrimental physiological responses in human, plant, animal, or aquatic life. This objective applies regardless of whether the toxicity is caused by a single substance or the interactive effect of multiple substances. (CVRWQCB, 2007) | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | Statistically significant difference from control using a t-test with 48-hour acute-style toxicity tests. | ||||
Guideline Reference: | Methods for Measuring the Acute Toxicity of Effluents and Receiving Waters to Freshwater and Marine Organisms, Fifth Edition. U.S. Environmental Protection Agency Office of Water, Washington, DC EPA-821-R-02-012 | ||||
Spatial Representation: | Samples were collected from Merced River at River Road. | ||||
Temporal Representation: | Samples were collected from October 2001 to November 2002. | ||||
Environmental Conditions: | |||||
QAPP Information: | Data quality: Excellent. Monitoring was conducted in accordance with the State Water Resources Control Board's Quality Assurance Program Plan for the State of California's Surface Water Ambient Monitoring Program. | ||||
QAPP Information Reference(s): | Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version) | ||||
|
|||||
LOE ID: | 23062 | ||||
Pollutant: | Toxicity | ||||
LOE Subgroup: | Toxicity | ||||
Matrix: | Sediment | ||||
Fraction: | Total | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Aquatic Life Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 6 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | TOXICITY TESTING | ||||
Data Used to Assess Water Quality: | None of the 6 samples tested with Hyalella azteca were toxic and violated the narrative toxicity objective. | ||||
Data Reference: | Monitoring and Reporting Program, Order Nos. R5-2003-0826, R5-2005-0833, and R5-2008-0005 for Coalition Groups Under Resolution No. R5-2003-0105, Conditional Waiver of Waste Discharge Requirements for Discharges From Irrigated Lands Within the Central Valley Region | ||||
Revised Draft of the 2007 Review of the Monitoring Data for the Irrigated Lands Regulatory Conditional Waiver Program | |||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations that produce detrimental physiological responses in human, plant, animal, or aquatic life. This objective applies regardless of whether the toxicity is caused by a single substance or the interactive effect of multiple substances. (CVRWQCB, 2007) | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | Statistically significant difference from control using a t-test with 10-day Hyalella azteca sediment toxicity tests. | ||||
Guideline Reference: | Methods for Measuring the Toxicity and Bioaccumulation of Sediment-associated Contaminants with Freshwater Invertebrates, Second Edition. U.S. Environmental Protection Agency Office of Research and Development, Duluth, MI , U.S. Environmental Protection Agency Office of Water, Washington, DC EPA-600/R-99/064 | ||||
Spatial Representation: | Samples were collected from Merced River at Santa Fe | ||||
Temporal Representation: | Samples were collected in August 2004 and August 2006 | ||||
Environmental Conditions: | |||||
QAPP Information: | Data quality: Excellent. Monitoring was conducted in accordance with Central Valley Water Board Monitoring and Reporting Program (order number R5-2003-0826) requirements (CVRWQCB, 2003) | ||||
QAPP Information Reference(s): | |||||
DECISION ID |
92257 |
Region 5 |
Merced River, Lower (McSwain Reservoir to San Joaquin River) |
||
Pollutant: | Aldicarb |
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 sixteen samples 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 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 sixteen samples exceed the evaluation guideline and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
Regional Board Decision Recommendation: | 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: | 67126 | ||||
Pollutant: | Aldicarb | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 16 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed Ag Waiver data for Merced River, Lower (McSwain Reservoir to San Joaquin River) to determine beneficial use support and results are as follows: 0 of 16 samples exceed the criterion for Aldicarb. | ||||
Data Reference: | Data for Various Pollutants in East San Joaquin, 2004-2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. (Water Quality Control Plan, Central Valley Region, Sacramento River Basin and San Joaquin River Basin) | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | The Basin Plan states: "Where valid testing has developed 96-hour LC50 values for aquatic organisms..., the Board will consider one tenth of this value for the most sensitive species tested as the upper limit (daily maximum) for the protection of aquatic life... or [O]ther available information on the pesticide..." The evaluation guideline for aldicarb, 6.33 ug/L, is one-tenth of the median lethal concentration (LC50 = 63.3 ug/L) for Lepomis macrochirus (Bluegill sunfish); USEPA Office of Pesticide Programs Ecotoxicity database. | ||||
Guideline Reference: | OPP Pesticide Ecotoxicity Database. | ||||
Spatial Representation: | Data for this line of evidence for Merced River, Lower (McSwain Reservoir to San Joaquin River) was collected at 1 monitoring site [Merced River @ Santa Fe - 535XMRSFD] | ||||
Temporal Representation: | Data was collected over the time period 2/12/2007-9/23/2008. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0 was followed. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0. | ||||
DECISION ID |
92309 |
Region 5 |
Merced River, Lower (McSwain Reservoir to San Joaquin River) |
||
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 zero samples exceed the water quality criteria for MUN, and zero of the nine samples exceed the water quality criteria for COLD. 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 water quality criteria for MUN, and zero of the nine samples exceed the water quality criteria for COLD 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 are 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: | 67127 | ||||
Pollutant: | Aldrin | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
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 Ag Waiver data for Merced River, Lower (McSwain Reservoir to San Joaquin River) to determine beneficial use support and results are as follows: 0 of 0 samples exceed the criterion for Aldrin. Nine samples were not used in the assessment because the laboratory data reporting limit(s) was above the objective and therefore the results could not be quantified with the level of certainty required by the Listing Policy. | ||||
Data Reference: | Data for Various Pollutants in East San Joaquin, 2004-2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The CTR objective for aldrin to protect human health from the consumption of water and organisms is 0.00013 ug/L. | ||||
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 Merced River, Lower (McSwain Reservoir to San Joaquin River) was collected at 1 monitoring site [Merced River @ Santa Fe - 535XMRSFD] | ||||
Temporal Representation: | Data was collected over the time period 10/21/2008-7/20/2010. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0 was followed. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0. | ||||
|
|||||
LOE ID: | 67128 | ||||
Pollutant: | Aldrin | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold 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 Ag Waiver data for Merced River, Lower (McSwain Reservoir to San Joaquin River) to determine beneficial use support and results are as follows: 0 of 9 samples exceed the criterion for Aldrin. | ||||
Data Reference: | Data for Various Pollutants in East San Joaquin, 2004-2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The criterion maximum concentration to protect aquatic life in freshwater for aldrin is 1.5 ug/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 Merced River, Lower (McSwain Reservoir to San Joaquin River) was collected at 1 monitoring site [Merced River @ Santa Fe - 535XMRSFD] | ||||
Temporal Representation: | Data was collected over the time period 10/21/2008-7/20/2010. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0 was followed. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0. | ||||
DECISION ID |
71550 |
Region 5 |
Merced River, Lower (McSwain Reservoir to San Joaquin River) |
||
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.
Three lines of evidence are available in the administrative record to assess this pollutant. None of the 2 ammonia concentrations exceed the evaluation guideline for the MUN beneficial use. None of the 40 ammonia concentrations exceed the calculated CMC for the COLD beneficial 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 in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. None of the 2 ammonia concentrations exceed the evaluation guideline for the MUN beneficial use, and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. None of the 40 ammonia concentrations exceed the calculated CMC for the COLD beneficial use, 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 this water body and pollutant combination should not be placed on the section 303(d) list. The readily available data and information is sufficient 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: | 20480 | ||||
Pollutant: | Ammonia | ||||
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: | 0 of the 2 samples collected by the Surface Water Ambient Monitoring Program exceeded the evaluation objective for Ammonia. | ||||
Data Reference: | San Joaquin River SWAMP Monitoring Data - Drainage Basin Inflows | ||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations that produce detrimental physiological responses in human, plant, animal, or aquatic life. This objective applies regardless of whether the toxicity is caused by a single substance or the interactive effect of multiple substances. (CRWQCB, 2006) | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | Ammonia levels should not exceed 30 mg/L (USEPA Health Advisory). | ||||
Guideline Reference: | 2006 edition of the drinking water standards and health advisories. EPA 822-R-03-013 | ||||
Spatial Representation: | Samples were collected at Merced River at River Road. | ||||
Temporal Representation: | The samples were collected from May 25 2000 to Jul 27 2000 | ||||
Environmental Conditions: | |||||
QAPP Information: | Monitoring was conducted in accordance with the State Water Resources Control Board's Quality Assurance Program Plan for the State of California's Surface Water Ambient Monitoring Program. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 79001 | ||||
Pollutant: | Ammonia as N, Total | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Aquatic Life Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 38 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Thirty-eight water samples collected from Merced River, Lower (McSwain Reservoir to San Joaquin River) by the East San Joaquin Water Quality Coalition and they were analyzed for ammonia, pH and temperature. None of the 38 water samples exceeded the calculated ammonia CMC values. | ||||
Data Reference: | Data for Various Pollutants in East San Joaquin, 2004-2009. | ||||
SWAMP Data: | |||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations that produce detrimental physiological responses in human, plant, animal, or aquatic life. This objective applies regardless of whether the toxicity is caused by a single substance or the interactive effect of multiple substances. | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | Per the National Recommended Water Quality Criteria (USEPA 2006): The 1-hour average concentration (acute criterion or CMC) of total ammonia nitrogen (in mg N/L) for freshwater where salmonid fish are present, which is not to be exceeded more than once every three years on average, is calculated using the following equation: CMC=0.275/(1+10^(7.204 - pH)) + 39.0/(1+10^(pH - 7.204)). | ||||
Guideline Reference: | National Recommended Water Quality Criteria. United States Environmental Protection Agency. Office of Water. Office of Science and Technology | ||||
Spatial Representation: | The 38 water samples were collected from Merced River, Lower (McSwain Reservoir to San Joaquin River) at one monitoring site [Merced River @ Santa Fe - 535XMRSFD]. | ||||
Temporal Representation: | The 38 water samples were collected intermittently to monthly between 2/12/2007 and 7/20/2010 | ||||
Environmental Conditions: | |||||
QAPP Information: | Data was collected under Irrigated Lands Regulatory Program | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0. | ||||
|
|||||
LOE ID: | 6336 | ||||
Pollutant: | Ammonia | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 2 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Zero of the 2 samples collected by the Surface Water Ambient Monitoring Program exceeded the evaluation guideline for Ammonia. | ||||
Data Reference: | San Joaquin River SWAMP Monitoring Data - Drainage Basin Inflows | ||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations that produce detrimental physiological responses in human, plant, animal, or aquatic life. This objective applies regardless of whether the toxicity is caused by a single substance or the interactive effect of multiple substances. (CRWQCB, 2006) | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | Ammonia levels should not to exceed the calculated limit. Freshwater Aquatic Life Protection (Salmonid present) Criteria Maximum Concentration (CMC) (1-hour Average (mg N/L)) calculated based on the following formula: CMC = (0.275/(1 + 107.204-pH)) + (39.0/(1 + 10pH-7.204)) which incorporates pH (US EPA, 2005: Appendix C) | ||||
Guideline Reference: | 1999 Update of Ambient Water Quality Criteria for Ammonia | ||||
Spatial Representation: | Samples were collected at Merced River at River Road. | ||||
Temporal Representation: | The samples were collected from May 25 2000 to Jul 27 2000. | ||||
Environmental Conditions: | |||||
QAPP Information: | Monitoring was conducted in accordance with the State Water Resources Control Board's Quality Assurance Program Plan for the State of California's Surface Water Ambient Monitoring Program. | ||||
QAPP Information Reference(s): | |||||
DECISION ID |
74757 |
Region 5 |
Merced River, Lower (McSwain Reservoir to San Joaquin River) |
||
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.
Five lines of evidence are available in the administrative record to assess this pollutant. 0 of the 36 water samples exceed the water quality objective for COLD, 0 of the 1 sediment samples exceed the evaluation guideline for COLD, and 0 of the 28 water samples exceed the water quality objective for MUN. 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. 0 of the 36 water samples exceed the water quality objective for COLD, 0 of the 1 sediment samples exceed the evaluation guideline for COLD, and 0 of the 28 water samples exceed the water quality objective for MUN 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: | 6338 | ||||
Pollutant: | Arsenic | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 13 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | Not Specified | ||||
Data Used to Assess Water Quality: | None of the 13 samples collected by the Surface Water Ambient Monitoring Program exceeded the CTR citerion of 340 ug/L for dissolved arsenic | ||||
Data Reference: | San Joaquin River SWAMP Monitoring Data - Drainage Basin Inflows | ||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | Dissolved arsenic levels should not exceed the CTR 1-hour average maximum concentration of 340 ug/L | ||||
Objective/Criterion Reference: | Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Samples were collected from the Merced River at River Road | ||||
Temporal Representation: | The samples were collected from Aug 29 2001 to Nov 20 2002 | ||||
Environmental Conditions: | |||||
QAPP Information: | Monitoring was conducted in accordance with the State Water Resources Control Board's Quality Assurance Program Plan for the State of California's Surface Water Ambient Monitoring Program. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 67141 | ||||
Pollutant: | Arsenic | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 23 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed Ag Waiver data for Merced River, Lower (McSwain Reservoir to San Joaquin River) to determine beneficial use support and results are as follows: 0 of 23 samples exceed the criterion for Arsenic. | ||||
Data Reference: | Data for Various Pollutants in East San Joaquin, 2004-2009. | ||||
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 Merced River, Lower (McSwain Reservoir to San Joaquin River) was collected at 1 monitoring site [Merced River @ Santa Fe - 535XMRSFD] | ||||
Temporal Representation: | Data was collected over the time period 2/12/2007-4/21/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0 was followed. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0. | ||||
|
|||||
LOE ID: | 67140 | ||||
Pollutant: | Arsenic | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 23 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed Ag Waiver data for Merced River, Lower (McSwain Reservoir to San Joaquin River) to determine beneficial use support and results are as follows: 0 of 23 samples exceed the criterion for Arsenic. | ||||
Data Reference: | Data for Various Pollutants in East San Joaquin, 2004-2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The California primary maximum contaminant level for arsenic is 0.010 mg/L. | ||||
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 Merced River, Lower (McSwain Reservoir to San Joaquin River) was collected at 1 monitoring site [Merced River @ Santa Fe - 535XMRSFD] | ||||
Temporal Representation: | Data was collected over the time period 2/12/2007-4/21/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0 was followed. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0. | ||||
|
|||||
LOE ID: | 20441 | ||||
Pollutant: | Arsenic | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
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: | None of the 5 samples collected by the Surface Water Ambient Monitoring Program exceeded the USEPA Primary MCL of 10 ug/L for total arsenic | ||||
Data Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | Total arsenic levels must not exceed the USEPA Primary MCL of 10 ug/L | ||||
Objective/Criterion Reference: | California Code of Regulations, Title 22, Division 4, Chapter 15. Domestic Water Quality and Monitoring | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Samples were collected from the Merced River at River Road | ||||
Temporal Representation: | The samples were collected between March 20, 2003 and June 30, 2003 | ||||
Environmental Conditions: | |||||
QAPP Information: | Monitoring was conducted in accordance with the State Water Resources Control Board's Quality Assurance Program Plan for the State of California's Surface Water Ambient Monitoring Program. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 67139 | ||||
Pollutant: | Arsenic | ||||
LOE Subgroup: | Pollutant-Sediment | ||||
Matrix: | Sediment | ||||
Fraction: | Total | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | SWAMP data indicates that 0 of the sample results exceed the evaluation guideline value for Arsenic. | ||||
Data Reference: | Statewide Stream Pollution Trends Study 2008 | ||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. Discharges shall not result in pesticide concentrations in bottom sediments or aquatic life that adversely affect beneficial uses. All waters shall be maintained free of toxic substances in concentrations that produce detrimental physiological responses in human, plant, animal, or aquatic life (Water Quality Control Plan, Central Valley Region, Sacramento River and San Joaquin River Basins). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | In freshwater sediments, the probable effect concentration (predictive of sediment toxicity) for arsenic is 33 mg/Kg dry weight (MacDonald et al. 2000). | ||||
Guideline Reference: | Development and evaluation of consensus-based sediment quality guidelines for freshwater ecosystems. Environmental Contamination and Toxicology. 39: 20-31 | ||||
Spatial Representation: | Data for this line of evidence was collected at one monitoring site [ Merced River @ River Road - 535MER546] | ||||
Temporal Representation: | Data was collected on 7/23/2008. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The SWAMP QAPP (2008) was followed. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
DECISION ID |
78829 |
Region 5 |
Merced River, Lower (McSwain Reservoir to San Joaquin River) |
||
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.
Two lines of evidence are available in the administrative record to assess this pollutant. Zero of the sixteen samples exceed the water quality objective for MUN, and zero of the sixteen samples exceed the evaluation guideline for COLD. 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 the sixteen samples exceed the water quality objective for MUN, and zero of the sixteen samples exceed the evaluation guideline for COLD 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: | 67150 | ||||
Pollutant: | Atrazine | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 16 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed Ag Waiver data for Merced River, Lower (McSwain Reservoir to San Joaquin River) to determine beneficial use support and results are as follows: 0 of 16 samples exceed the criterion for Atrazine. | ||||
Data Reference: | Data for Various Pollutants in East San Joaquin, 2004-2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. (Water Quality Control Plan, Central Valley Region, Sacramento River Basin and San Joaquin River Basin) | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | The Basin Plan states: "Where valid testing has developed 96-hour LC50 values for aquatic organisms..., the Board will consider one tenth of this value for the most sensitive species tested as the upper limit (daily maximum) for the protection of aquatic life... or [O]ther available information on the pesticide..." The evaluation guideline for Atrazine, 43 ug/L, is a an EC50 for Lemna gibba (duckweed); USEPA Office of Pesticide Programs Ecotoxicity database. | ||||
Guideline Reference: | OPP Pesticide Ecotoxicity Database. | ||||
Spatial Representation: | Data for this line of evidence for Merced River, Lower (McSwain Reservoir to San Joaquin River) was collected at 1 monitoring site [Merced River @ Santa Fe - 535XMRSFD] | ||||
Temporal Representation: | Data was collected over the time period 2/12/2007-9/23/2008. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0 was followed. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0. | ||||
|
|||||
LOE ID: | 67151 | ||||
Pollutant: | Atrazine | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 16 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed Ag Waiver data for Merced River, Lower (McSwain Reservoir to San Joaquin River) to determine beneficial use support and results are as follows: 0 of 16 samples exceed the criterion for Atrazine. | ||||
Data Reference: | Data for Various Pollutants in East San Joaquin, 2004-2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The California primary maximum contaminant level for atrazine is 1 ug/L. | ||||
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 Merced River, Lower (McSwain Reservoir to San Joaquin River) was collected at 1 monitoring site [Merced River @ Santa Fe - 535XMRSFD] | ||||
Temporal Representation: | Data was collected over the time period 2/12/2007-9/23/2008. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0 was followed. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0. | ||||
DECISION ID |
91584 |
Region 5 |
Merced River, Lower (McSwain Reservoir to San Joaquin River) |
||
Pollutant: | Azinphos-methyl (Guthion) |
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.
One line of evidence is available in the administrative record to assess this pollutant. Zero of the zero samples 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 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 the zero samples exceed 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 are 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: | 67152 | ||||
Pollutant: | Azinphos-methyl (Guthion) | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold 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 Ag Waiver data for Merced River, Lower (McSwain Reservoir to San Joaquin River) to determine beneficial use support and results are as follows: 0 of 0 samples exceed the criterion for Azinphos methyl. Twenty-four samples were not used in the assessment because the laboratory data reporting limit(s) was above the objective and therefore the results could not be quantified with the level of certainty required by the Listing Policy. | ||||
Data Reference: | Data for Various Pollutants in East San Joaquin, 2004-2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. (Water Quality Control Plan, Central Valley Region, Sacramento River Basin and San Joaquin River Basin) | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | The National Recommended Water Quality criterion for Azinphos Methyl (Guthion) for the protection of freshwater aquatic life is a maximum of 0.01 ug/l. | ||||
Guideline Reference: | National Recommended Water Quality Criteria. United States Environmental Protection Agency. Office of Water. Office of Science and Technology | ||||
Spatial Representation: | Data for this line of evidence for Merced River, Lower (McSwain Reservoir to San Joaquin River) was collected at 1 monitoring site [Merced River @ Santa Fe - 535XMRSFD] | ||||
Temporal Representation: | Data was collected over the time period 2/12/2007-5/19/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0 was followed. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0. | ||||
DECISION ID |
99803 |
Region 5 |
Merced River, Lower (McSwain Reservoir to San Joaquin River) |
||
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 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 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 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 the zero samples exceed 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 are 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: | 67166 | ||||
Pollutant: | Bifenthrin | ||||
LOE Subgroup: | Pollutant-Sediment | ||||
Matrix: | Sediment | ||||
Fraction: | Total | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 0 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | The sample was not assessed because, after the laboratory method detection limit result was organic carbon-normalized, the result was above the evaluation guideline and, therefore the result could not be quantified with the level of certainty required by the Listing Policy. | ||||
Data Reference: | Statewide Stream Pollution Trends Study 2008 | ||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. Discharges shall not result in pesticide concentrations in bottom sediments or aquatic life that adversely affect beneficial uses. (Water Quality Control Plan, Central Valley Region, Sacramento River and San Joaquin River Basins) | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | The evaluation guideline value for bifenthrin, 0.043 ug/g OC, is one-tenth of the median lethal concentration for H. azteca (LC50; 0.43 ug/g OC). The LC50 (0.43 ug/g OC) is the geometric mean of OC-normalized LC50 values for bifenthrin from Amweg et al. (2005) and Amweg and Weston (2007). | ||||
Guideline Reference: | Use and Toxicity of Pyrethroid Pesticides in the Central Valley, California, USA. Environmental Toxicology and Chemistry, 24:966-972, with erratum 24:No. 5 | ||||
Guideline Reference: | Whole-sediment toxicity identification evaluation tools for pyrethroid insecticides: I. piperonyl butoxide addition. Environ. Toxicol. Chem. 26:2389-2396. | ||||
Spatial Representation: | Data for this line of evidence was collected at one monitoring site [ Merced River @ River Road - 535MER546] | ||||
Temporal Representation: | Data was collected on 7/23/2008. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The SWAMP QAPP (2008) was followed. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
|
|||||
LOE ID: | 67165 | ||||
Pollutant: | Bifenthrin | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 0 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Eight samples were collected and analyzed for Bifenthrin. The reporting level for all 8 samples is greater than the evaluation guideline value. Therefore, none of the samples were evaluated for exceedances; i.e., 0 samples, 0 exceedances. | ||||
Data Reference: | Data for Various Pollutants in East San Joaquin, 2004-2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. (Water Quality Control Plan, Central Valley Region, Sacramento River Basin and San Joaquin River Basin) | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | The Basin Plan states: "Where valid testing has developed 96-hour LC50 values for aquatic organisms..., the Board will consider one tenth of this value for the most sensitive species tested as the upper limit (daily maximum) for the protection of aquatic life... or [O]ther available information on the pesticide..." Aquatic life should not be affected unacceptably if the 4-day average concentration of Bifenthrin, 0.0006 ug/L, is not exceeded more than once every three years on the average (UC Davis Aquatic Life Criterion). | ||||
Guideline Reference: | OPP Pesticide Ecotoxicity Database. | ||||
Spatial Representation: | Data for this line of evidence for Merced River, Lower (McSwain Reservoir to San Joaquin River) was collected at 1 monitoring site [Merced River @ Santa Fe - 535XMRSFD] | ||||
Temporal Representation: | Data was collected over the time period 2/12/2007-9/11/2007. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0 was followed. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0. | ||||
DECISION ID |
73661 |
Region 5 |
Merced River, Lower (McSwain Reservoir to San Joaquin River) |
||
Pollutant: | Boron |
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 listing under sections 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status. Data is available from 1 line of evidence for this pollutant. Based on the readily available data and information, the weight of evidence indicates that there is not sufficient justification for placing this water segment-pollution combination on the section 303(d) list. The recommendation is based on staff findings that 0 of 64 available concentrations exceeded the water quality objective and this does not exceed the allowable frequency using Table 3.1 of the Listing Policy. Table 3.1 of the listing policy recommends listing if a sample size of 64 has 6 or more samples that exceed the evaluation criteria.
The data used satisfies the data quality requirements of section 6.1.4 of the Policy. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 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: | 21070 | ||||
Pollutant: | Boron | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 64 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | None of the 64 samples collected by the Surface Water Ambient Monitoring Program exceeded the evaluation objective of 1,000 ug/L for boron | ||||
Data Reference: | San Joaquin River SWAMP Monitoring Data - Drainage Basin Inflows | ||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations that produce detrimental physiological responses in human, plant, animal, or aquatic life. This objective applies regardless of whether the toxicity is caused by a single substance or the interactive effect of multiple substances. (CRWQCB, 2006) | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | Boron levels should not exceed 1,000 ug/L (Department of Health Services Health Advisory) | ||||
Guideline Reference: | Drinking Water Notification and Response Levels: An Overview | ||||
Spatial Representation: | Samples were collected from the Merced River at River Road | ||||
Temporal Representation: | The samples were collected between January 28, 1998 and November 29, 2005 | ||||
Environmental Conditions: | |||||
QAPP Information: | Monitoring was conducted in accordance with the State Water Resources Control Board's Quality Assurance Program Plan for the State of California's Surface Water Ambient Monitoring Program. | ||||
QAPP Information Reference(s): | |||||
DECISION ID |
74114 |
Region 5 |
Merced River, Lower (McSwain Reservoir to San Joaquin River) |
||
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.
Five lines of evidence are available in the administrative record to assess this pollutant. Zero of the twenty-eight samples exceed the water quality objective for MUN, zero of the thirteen water samples exceed the water quality objective for COLD, and zero of the one sediment samples exceed the evaluation guideline for COLD. 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 the twenty-eight samples exceed the water quality objective for MUN, zero of the thirteen water samples exceed the water quality objective for COLD, and zero of the one sediment samples exceed the evaluation guideline for COLD 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: | 6340 | ||||
Pollutant: | Cadmium | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 6 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | Not Specified | ||||
Data Used to Assess Water Quality: | None of the 6 samples collected by the Surface Water Ambient Monitoring Program exceeded the calculated CTR criterion for dissolved cadmium | ||||
Data Reference: | San Joaquin River SWAMP Monitoring Data - Drainage Basin Inflows | ||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | Dissolved cadmium levels should not exceed the calculated limit based on the formula: Criteria Maximum Concentration (1-hour Average dissolved)=(EXP(1.128*LN(hardness)-3.6867))*(1.136672-(LN(hardness)*0.041838)) | ||||
Objective/Criterion Reference: | Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Samples were collected from the Merced River at River Road | ||||
Temporal Representation: | The samples were collected between September 26, 2001 and November 20, 2002 | ||||
Environmental Conditions: | |||||
QAPP Information: | Monitoring was conducted in accordance with the State Water Resources Control Board's Quality Assurance Program Plan for the State of California's Surface Water Ambient Monitoring Program. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 67179 | ||||
Pollutant: | Cadmium | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
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 AgWaiver data for Merced River, Lower (McSwain Reservoir to San Joaquin River) to determine beneficial use support and results are as follows: 0 of 7 samples exceed the criterion for Cadmium. | ||||
Data Reference: | Data for Various Pollutants in East San Joaquin, 2004-2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The California Toxics Rule (CTR) lists criterion continuous concentrations (4-day average) to protect aquatic life in freshwater. The cadmium 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 Merced River, Lower (McSwain Reservoir to San Joaquin River) was collected at 1 monitoring site [ Merced River @ Santa Fe - 535XMRSFD] | ||||
Temporal Representation: | Data was collected over the time period 10/21/2008-4/21/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0 was followed. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0. | ||||
|
|||||
LOE ID: | 67168 | ||||
Pollutant: | Cadmium | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 23 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed Ag Waiver data for Merced River, Lower (McSwain Reservoir to San Joaquin River) to determine beneficial use support and results are as follows: 0 of 23 samples exceed the criterion for Cadmium. | ||||
Data Reference: | Data for Various Pollutants in East San Joaquin, 2004-2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The California primary maximum contaminant level for cadmium is 5 ug/L. | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for Merced River, Lower (McSwain Reservoir to San Joaquin River) was collected at 1 monitoring site [Merced River @ Santa Fe - 535XMRSFD] | ||||
Temporal Representation: | Data was collected over the time period 2/12/2007-4/21/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0 was followed. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0. | ||||
|
|||||
LOE ID: | 67167 | ||||
Pollutant: | Cadmium | ||||
LOE Subgroup: | Pollutant-Sediment | ||||
Matrix: | Sediment | ||||
Fraction: | Total | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | SWAMP data indicates that 0 of the sample results exceed the evaluation guideline value for Cadmium. | ||||
Data Reference: | Statewide Stream Pollution Trends Study 2008 | ||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. Discharges shall not result in pesticide concentrations in bottom sediments or aquatic life that adversely affect beneficial uses. All waters shall be maintained free of toxic substances in concentrations that produce detrimental physiological responses in human, plant, animal, or aquatic life (Water Quality Control Plan, Central Valley Region, Sacramento River and San Joaquin River Basins). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | In freshwater sediments, the probable effect concentration (predictive of sediment toxicity) for cadmium is 4.98 mg/Kg dry weight (MacDonald et al. 2000). | ||||
Guideline Reference: | Development and evaluation of consensus-based sediment quality guidelines for freshwater ecosystems. Environmental Contamination and Toxicology. 39: 20-31 | ||||
Spatial Representation: | Data for this line of evidence was collected at one monitoring site [ Merced River @ River Road - 535MER546] | ||||
Temporal Representation: | Data was collected on 7/23/2008. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The SWAMP QAPP (2008) was followed. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
|
|||||
LOE ID: | 20443 | ||||
Pollutant: | Cadmium | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
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: | None of the 5 samples collected by the Surface Water Ambient Monitoring Program exceeded the California Primary MCL of 5 ug/L for total cadmium | ||||
Data Reference: | San Joaquin River SWAMP Monitoring Data - Drainage Basin Inflows | ||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | Total cadmium levels should not exceed the California Department of Public Health Primary MCL of 5 ug/L | ||||
Objective/Criterion Reference: | California Code of Regulations, Title 22, Division 4, Chapter 15. Domestic Water Quality and Monitoring | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Samples were collected from the Merced River at River Road | ||||
Temporal Representation: | The samples were collected between March 20, 2003 and June 30, 2003 | ||||
Environmental Conditions: | |||||
QAPP Information: | Monitoring was conducted in accordance with the State Water Resources Control Board's Quality Assurance Program Plan for the State of California's Surface Water Ambient Monitoring Program. | ||||
QAPP Information Reference(s): | |||||
DECISION ID |
86335 |
Region 5 |
Merced River, Lower (McSwain Reservoir to San Joaquin River) |
||
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. Zero of the sixteen samples 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 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 the sixteen samples exceed the evaluation guideline and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
Regional Board Decision Recommendation: | 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: | 67180 | ||||
Pollutant: | Carbaryl | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 16 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed Ag Waiver data for Merced River, Lower (McSwain Reservoir to San Joaquin River) to determine beneficial use support and results are as follows: 0 of 16 samples exceed the criterion for Carbaryl. | ||||
Data Reference: | Data for Various Pollutants in East San Joaquin, 2004-2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. (Water Quality Control Plan, Central Valley Region, Sacramento River Basin and San Joaquin River Basin) | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | The USEPA recommended water quality criterion for freshwater aquatic life for carbaryl is 2.1 Āµg/L. | ||||
Guideline Reference: | National Recommended Water Quality Criteria. United States Environmental Protection Agency. Office of Water. Office of Science and Technology | ||||
Spatial Representation: | Data for this line of evidence for Merced River, Lower (McSwain Reservoir to San Joaquin River) was collected at 1 monitoring site [Merced River @ Santa Fe - 535XMRSFD] | ||||
Temporal Representation: | Data was collected over the time period 2/12/2007-9/23/2008. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0 was followed. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0. | ||||
DECISION ID |
91667 |
Region 5 |
Merced River, Lower (McSwain Reservoir to San Joaquin River) |
||
Pollutant: | Carbofuran |
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 sixteen samples exceed the water quality criteria for MUN, and zero of the sixteen samples exceed the evaluation guideline for WARM. 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 sixteen samples exceed the water quality criteria for MUN, and zero of sixteen samples exceed the evaluation guideline for WARM 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: | 67181 | ||||
Pollutant: | Carbofuran | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 16 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed Ag Waiver data for Merced River, Lower (McSwain Reservoir to San Joaquin River) to determine beneficial use support and results are as follows: 0 of 16 samples exceed the criterion for Carbofuran. | ||||
Data Reference: | Data for Various Pollutants in East San Joaquin, 2004-2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. (Water Quality Control Plan, Central Valley Region, Sacramento River Basin and San Joaquin River Basin) | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | The freshwater criterion maximum concentration for carbofuran is 0.5 Āµg/L (DFG 92-3, 1992). | ||||
Guideline Reference: | Hazard Assessment of the Insecticide Carbofuran to Aquatic Organisms in the Sacramento River System | ||||
Spatial Representation: | Data for this line of evidence for Merced River, Lower (McSwain Reservoir to San Joaquin River) was collected at 1 monitoring site [Merced River @ Santa Fe - 535XMRSFD] | ||||
Temporal Representation: | Data was collected over the time period 2/12/2007-9/23/2008. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0 was followed. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0. | ||||
|
|||||
LOE ID: | 67182 | ||||
Pollutant: | Carbofuran | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 16 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed Ag Waiver data for Merced River, Lower (McSwain Reservoir to San Joaquin River) to determine beneficial use support and results are as follows: 0 of 16 samples exceed the criterion for Carbofuran. | ||||
Data Reference: | Data for Various Pollutants in East San Joaquin, 2004-2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The California primary maximum contaminant level for Carbofuran is 18 ug/L. | ||||
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 Merced River, Lower (McSwain Reservoir to San Joaquin River) was collected at 1 monitoring site [Merced River @ Santa Fe - 535XMRSFD] | ||||
Temporal Representation: | Data was collected over the time period 2/12/2007-9/23/2008. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0 was followed. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0. | ||||
DECISION ID |
91942 |
Region 5 |
Merced River, Lower (McSwain Reservoir to San Joaquin River) |
||
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.
Three lines of evidence are available in the administrative record to assess this pollutant. Zero of the zero water samples exceed the water quality objective for MUN, zero of the zero water samples exceed the evaluation guideline for COLD, and zero of the one sediment samples exceed the evaluation guideline for COLD. 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 water samples exceed the water quality objective for MUN, zero of the zero water samples exceed the evaluation guideline for COLD, and zero of the one sediment samples exceed the evaluation guideline for COLD 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 are 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: | 78644 | ||||
Pollutant: | Chlordane | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
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 Ag Waiver data for Merced River, Lower (McSwain Reservoir to San Joaquin River) to determine beneficial use support and results are as follows: nine samples were analyzed for Chlordane. The nine samples were not used in the assessment because the laboratory data reporting limit was above the objective, the available sample was below the laboratory data reporting limit, and therefore the results could not be quantified with the level of certainty required by the Listing Policy. 0 of 0 samples exceed the criterion for chlordane. | ||||
Data Reference: | Data for Various Pollutants for California Rice Commission, 2004-2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Chlordane objective to protect human health (water and organism consumption) is 0.00057 ug/L (California Toxics Rule, 2000). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | |||||
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: | Data for this line of evidence for Merced River, Lower (McSwain Reservoir to San Joaquin River) was collected at one monitoring site [Merced River @ Santa Fe - 535XMRSFD] | ||||
Temporal Representation: | Data was collected between 10/21/2008 and 7/20/2010 | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | Data was collected as part of the Irrigated Lands Regulatory Program. | ||||
QAPP Information Reference(s): | Monitoring and Reporting Program Plan for California Rice Commission. | ||||
|
|||||
LOE ID: | 67183 | ||||
Pollutant: | Chlordane | ||||
LOE Subgroup: | Pollutant-Sediment | ||||
Matrix: | Sediment | ||||
Fraction: | Total | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Zero of 1 sample collected exceeded the criteria for chlordane concentration (Sum of trans-Chlordane, cis-Chlordane, cis-Nonachlor, trans-Nonachlor, and Oxychlordane). | ||||
Data Reference: | Statewide Stream Pollution Trends Study 2008 | ||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations that produce detrimental physiological responses in human, plant, animal, or aquatic life. Waters shall not contain substances in concentrations that result in the deposition of material that causes nuisance or adversely affects beneficial uses. (Water Quality Control Plan for the Sacramento and San Joaquin River Basins). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | The Probable Effect Concentration for Chlordane in freshwater sediments is 17.6 ug/kg(MacDonald et al. 2000). | ||||
Guideline Reference: | Development and evaluation of consensus-based sediment quality guidelines for freshwater ecosystems. Environmental Contamination and Toxicology. 39: 20-31 | ||||
Spatial Representation: | Data were collected at the following station 535MER546 (Merced River @ River Road). | ||||
Temporal Representation: | The samples were collected on 7/23/2008. | ||||
Environmental Conditions: | |||||
QAPP Information: | The SWAMP QAPP (2008) was followed. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
|
|||||
LOE ID: | 78643 | ||||
Pollutant: | Chlordane | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Aquatic Life Use: | Cold 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 Ag Waiver data for Merced River, Lower (McSwain Reservoir to San Joaquin River) to determine beneficial use support and results are as follows: nine samples were analyzed for Chlordane. The nine samples were not used in the assessment because the laboratory data reporting limit was above the objective, the available sample was below the laboratory data reporting limit, and therefore the results could not be quantified with the level of certainty required by the Listing Policy. 0 of 0 samples exceed the criterion for chlordane. | ||||
Data Reference: | Data for Various Pollutants for California Rice Commission, 2004-2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. (Water Quality Control Plan, Central Valley Region, Sacramento River Basin and San Joaquin River Basin) | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | The Chlordane criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is 0.0043 ug/L (California Toxics Rule, 2000). | ||||
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: | Data for this line of evidence for Merced River, Lower (McSwain Reservoir to San Joaquin River) was collected at one monitoring site [Merced River @ Santa Fe - 535XMRSFD] | ||||
Temporal Representation: | Data was collected between 10/21/2008 and 7/20/2010 | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | Data was collected as part of the Irrigated Lands Regulatory Program. | ||||
QAPP Information Reference(s): | Monitoring and Reporting Program Plan for California Rice Commission. | ||||
DECISION ID |
72685 |
Region 5 |
Merced River, Lower (McSwain Reservoir to San Joaquin River) |
||
Pollutant: | Chloride |
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 listing under sections 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status. Data is available from 1 line of evidence for this pollutant. Based on the readily available data and information, the weight of evidence indicates that there is not sufficient justification for placing this water segment-pollution combination on the section 303(d) list. The recommendation is based on staff findings that 0 of 27 available concentrations exceeded the water quality objective and this does not exceed the allowable frequency using Table 3.1 of the Listing Policy. Table 3.1 of the listing policy recommends listing if a sample size of 27 has 3 or more samples that exceed the evaluation criteria.
The data used satisfies the data quality requirements of section 6.1.4 of the Policy. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 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: | 20842 | ||||
Pollutant: | Chloride | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 27 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Zero of the 27 samples collected by the Surface Water Ambient Monitoring Program exceeded the evaluation objective for Chloride. | ||||
Data Reference: | San Joaquin River SWAMP Monitoring Data - Drainage Basin Inflows | ||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations that produce detrimental physiological responses in human, plant, animal, or aquatic life. This objective applies regardless of whether the toxicity is caused by a single substance or the interactive effect of multiple substances. (CRWQCB, 2006) | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | Chloride levels should not exceed 250 mg/L (Department of Public Health Secondary MCL). | ||||
Guideline Reference: | California Code of Regulations, Title 22, Division 4, Chapter 15. Domestic Water Quality and Monitoring | ||||
Spatial Representation: | Samples were collected at Merced River at River Road. | ||||
Temporal Representation: | The samples were collected from January 28 1998 to June 30 2003. | ||||
Environmental Conditions: | |||||
QAPP Information: | Monitoring was conducted in accordance with the State Water Resources Control Board's Quality Assurance Program Plan for the State of California's Surface Water Ambient Monitoring Program. | ||||
QAPP Information Reference(s): | |||||
DECISION ID |
86435 |
Region 5 |
Merced River, Lower (McSwain Reservoir to San Joaquin River) |
||
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 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 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 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 the one samples exceed 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 are 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: | 67193 | ||||
Pollutant: | Chromium | ||||
LOE Subgroup: | Pollutant-Sediment | ||||
Matrix: | Sediment | ||||
Fraction: | Total | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | SWAMP data indicates that 0 of the sample results exceed the evaluation guideline value for Chromium. | ||||
Data Reference: | Statewide Stream Pollution Trends Study 2008 | ||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. Discharges shall not result in pesticide concentrations in bottom sediments or aquatic life that adversely affect beneficial uses. All waters shall be maintained free of toxic substances in concentrations that produce detrimental physiological responses in human, plant, animal, or aquatic life (Water Quality Control Plan, Central Valley Region, Sacramento River and San Joaquin River Basins). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | In freshwater sediments, the probable effect concentration (predictive of sediment toxicity) for chromium is 111 mg/Kg dry weight (MacDonald et al. 2000). | ||||
Guideline Reference: | Development and evaluation of consensus-based sediment quality guidelines for freshwater ecosystems. Environmental Contamination and Toxicology. 39: 20-31 | ||||
Spatial Representation: | Data for this line of evidence was collected at one monitoring site [ Merced River @ River Road - 535MER546] | ||||
Temporal Representation: | Data was collected on 7/23/2008. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The SWAMP QAPP (2008) was followed. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
DECISION ID |
70862 |
Region 5 |
Merced River, Lower (McSwain Reservoir to San Joaquin River) |
||
Pollutant: | Chromium (total) |
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. Region 5 data was not included in the 2012 Integrated Report so all decisions are carried over from the 2010 listing cycle.
This pollutant is being considered for listing under sections 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status. Data is available from 1 line of evidence for this pollutant. Based on the readily available data and information, the weight of evidence indicates that there is not sufficient justification for placing this water segment-pollution combination on the section 303(d) list. The recommendation is based on staff findings that 0 of 15 available concentrations exceeded the water quality objective and this does not exceed the allowable frequency using Table 3.1 of the Listing Policy. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 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: | 20778 | ||||
Pollutant: | Chromium (total) | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 15 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Zero of the 15 samples collected by the Surface Water Ambient Monitoring Program exceeded the evaluation objective for Chromium. | ||||
Data Reference: | San Joaquin River SWAMP Monitoring Data - Drainage Basin Inflows | ||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations that produce detrimental physiological responses in human, plant, animal, or aquatic life. This objective applies regardless of whether the toxicity is caused by a single substance or the interactive effect of multiple substances. (CRWQCB, 2006) | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | Chromium levels should not exceed 50 ug/L (Department of Public Health Primary MCL). | ||||
Guideline Reference: | California Code of Regulations, Title 22, Division 4, Chapter 15. Domestic Water Quality and Monitoring | ||||
Spatial Representation: | Samples were collected at Merced River at River Road. | ||||
Temporal Representation: | The samples were collected from June 24 1998 to June 30 2003. | ||||
Environmental Conditions: | |||||
QAPP Information: | Monitoring was conducted in accordance with the State Water Resources Control Board's Quality Assurance Program Plan for the State of California's Surface Water Ambient Monitoring Program. | ||||
QAPP Information Reference(s): | |||||
DECISION ID |
71652 |
Region 5 |
Merced River, Lower (McSwain Reservoir to San Joaquin River) |
||
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.
Four lines of evidence are available in the administrative record to assess this pollutant. 0 of the 34 water samples exceed the water quality objective for COLD, 0 of the 1 sediment samples exceed the evaluation guideline for COLD, and 0 of the 38 water samples exceed the water quality objective for MUN. 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. 0 of the 34 water samples exceed the water quality objective for COLD, 0 of the 1 sediment samples exceed the evaluation guideline for COLD, and 0 of the 38 water samples exceed the water quality objective for MUN 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: | 67196 | ||||
Pollutant: | Copper | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 21 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed AgWaiver data for Merced River, Lower (McSwain Reservoir to San Joaquin River) to determine beneficial use support and results are as follows: 0 of 21 samples exceed the criterion for Copper. | ||||
Data Reference: | Data for Various Pollutants in East San Joaquin, 2004-2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The California Toxics Rule (CTR) lists criterion continuous concentrations (4-day average) to protect aquatic life in freshwater. The chromium 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 metals criteria. | ||||
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 Merced River, Lower (McSwain Reservoir to San Joaquin River) was collected at 1 monitoring site [ Merced River @ Santa Fe - 535XMRSFD] | ||||
Temporal Representation: | Data was collected over the time period 10/21/2008-6/15/2010. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0 was followed. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0. | ||||
|
|||||
LOE ID: | 6342 | ||||
Pollutant: | Copper | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 13 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | None of the 13 samples collected by the Surface Water Ambient Monitoring Program exceeded the evaluation objective for Copper. | ||||
Data Reference: | San Joaquin River SWAMP Monitoring Data - Drainage Basin Inflows | ||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | California Toxics Rule 4-day average criteria for dissolved Copper. | ||||
Objective/Criterion Reference: | Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Samples were collected at Merced River at River Road. | ||||
Temporal Representation: | The samples were collected from October 2000 to November 2002. | ||||
Environmental Conditions: | |||||
QAPP Information: | Monitoring was conducted in accordance with the State Water Resources Control Board's Quality Assurance Program Plan for the State of California's Surface Water Ambient Monitoring Program. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 67194 | ||||
Pollutant: | Copper | ||||
LOE Subgroup: | Pollutant-Sediment | ||||
Matrix: | Sediment | ||||
Fraction: | Total | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | SWAMP data indicates that 0 of the sample results exceed the evaluation guideline value for Copper. | ||||
Data Reference: | Statewide Stream Pollution Trends Study 2008 | ||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. Discharges shall not result in pesticide concentrations in bottom sediments or aquatic life that adversely affect beneficial uses. All waters shall be maintained free of toxic substances in concentrations that produce detrimental physiological responses in human, plant, animal, or aquatic life (Water Quality Control Plan, Central Valley Region, Sacramento River and San Joaquin River Basins). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | In freshwater sediments, the probable effect concentration (predictive of sediment toxicity) for copper is 149 mg/Kg dry weight (MacDonald et al. 2000). | ||||
Guideline Reference: | Development and evaluation of consensus-based sediment quality guidelines for freshwater ecosystems. Environmental Contamination and Toxicology. 39: 20-31 | ||||
Spatial Representation: | Data for this line of evidence was collected at one monitoring site [ Merced River @ River Road - 535MER546] | ||||
Temporal Representation: | Data was collected on 7/23/2008. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The SWAMP QAPP (2008) was followed. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
|
|||||
LOE ID: | 67195 | ||||
Pollutant: | Copper | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 38 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed Ag Waiver data for Merced River, Lower (McSwain Reservoir to San Joaquin River) to determine beneficial use support and results are as follows: 0 of 38 samples exceed the criterion for Copper. | ||||
Data Reference: | Data for Various Pollutants in East San Joaquin, 2004-2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The California secondary maximum contaminant level for copper is 1.0 mg/L. | ||||
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 Merced River, Lower (McSwain Reservoir to San Joaquin River) was collected at 1 monitoring site [Merced River @ Santa Fe - 535XMRSFD] | ||||
Temporal Representation: | Data was collected over the time period 2/12/2007-7/20/2010. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0 was followed. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0. | ||||
DECISION ID |
91944 |
Region 5 |
Merced River, Lower (McSwain Reservoir to San Joaquin River) |
||
Pollutant: | Cyanazine |
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 sixteen samples 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 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 sixteen samples exceed the evaluation guideline and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
Regional Board Decision Recommendation: | 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: | 67206 | ||||
Pollutant: | Cyanazine | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 16 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed Ag Waiver data for Merced River, Lower (McSwain Reservoir to San Joaquin River) to determine beneficial use support and results are as follows: 0 of 16 samples exceed the criterion for Cyanazine. | ||||
Data Reference: | Data for Various Pollutants in East San Joaquin, 2004-2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. (Water Quality Control Plan, Central Valley Region, Sacramento River Basin and San Joaquin River Basin) | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | The EC50 for Navicula pelliculosa (freshwater diatom) for cyanazine is 4.8 ug/L (USEPA Office of Pesticide Programs Ecotoxicity database). | ||||
Guideline Reference: | OPP Pesticide Ecotoxicity Database. | ||||
Spatial Representation: | Data for this line of evidence for Merced River, Lower (McSwain Reservoir to San Joaquin River) was collected at 1 monitoring site [Merced River @ Santa Fe - 535XMRSFD] | ||||
Temporal Representation: | Data was collected over the time period 2/12/2007-9/23/2008. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0 was followed. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0. | ||||
DECISION ID |
86473 |
Region 5 |
Merced River, Lower (McSwain Reservoir to San Joaquin River) |
||
Pollutant: | Cyfluthrin |
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. Zero of the zero samples 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 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 the zero samples exceed 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 are 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: | 67207 | ||||
Pollutant: | Cyfluthrin | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold 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 Ag Waiver data for Merced River, Lower (McSwain Reservoir to San Joaquin River) to determine beneficial use support and results are as follows: 0 of 0 samples exceed the criterion for Cyfluthrin, total. Eight samples were not used in the assessment because the laboratory data reporting limit(s) was above the objective and therefore the results could not be quantified with the level of certainty required by the Listing Policy. | ||||
Data Reference: | Data for Various Pollutants in East San Joaquin, 2004-2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. (Water Quality Control Plan, Central Valley Region, Sacramento River Basin and San Joaquin River Basin) | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | The Basin Plan states: "Where valid testing has developed 96-hour LC50 values for aquatic organisms..., the Board will consider one tenth of this value for the most sensitive species tested as the upper limit (daily maximum) for the protection of aquatic life... or [O]ther available information on the pesticide..." Aquatic life should not be affected unacceptably if the 4-day average concentration of Cyfluthrin, 0.00005 ug/L, is not exceeded more than once every three years on the average (UC Davis Water Quality Criteria Report for Cyfluthrin, March 2010). | ||||
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 Merced River, Lower (McSwain Reservoir to San Joaquin River) was collected at 1 monitoring site [Merced River @ Santa Fe - 535XMRSFD] | ||||
Temporal Representation: | Data was collected over the time period 2/12/2007-9/11/2007. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0 was followed. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0. | ||||
|
|||||
LOE ID: | 67208 | ||||
Pollutant: | Cyfluthrin | ||||
LOE Subgroup: | Pollutant-Sediment | ||||
Matrix: | Sediment | ||||
Fraction: | Total | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 0 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | The sample was not assessed because, after the laboratory method detection limit result was organic carbon-normalized, the result was above the evaluation guideline and, therefore the result could not be quantified with the level of certainty required by the Listing Policy. | ||||
Data Reference: | Statewide Stream Pollution Trends Study 2008 | ||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. Discharges shall not result in pesticide concentrations in bottom sediments or aquatic life that adversely affect beneficial uses. (Water Quality Control Plan, Central Valley Region, Sacramento River and San Joaquin River Basins) | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | The evaluation guideline value for cyfluthrin, 0.11 ug/g OC, is one-tenth of the median lethal concentration for H. azteca (LC50; 1.1 ug/g OC). The LC50 (1.1 ug/g OC) is the geometric mean of OC-normalized LC50 values for cyfluthrin from Amweg et al. (2005). | ||||
Guideline Reference: | Use and Toxicity of Pyrethroid Pesticides in the Central Valley, California, USA. Environmental Toxicology and Chemistry, 24:966-972, with erratum 24:No. 5 | ||||
Spatial Representation: | Data for this line of evidence was collected at one monitoring site [ Merced River @ River Road - 535MER546] | ||||
Temporal Representation: | Data was collected on 7/23/2008. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The SWAMP QAPP (2008) was followed. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
DECISION ID |
86514 |
Region 5 |
Merced River, Lower (McSwain Reservoir to San Joaquin River) |
||
Pollutant: | Cyhalothrin, Lambda |
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. Zero of the zero samples 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 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 the zero samples exceed 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 are 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: | 67209 | ||||
Pollutant: | Cyhalothrin, Lambda | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold 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 Ag Waiver data for Merced River, Lower (McSwain Reservoir to San Joaquin River) to determine beneficial use support and results are as follows: 0 of 0 samples exceed the criterion for Cyhalothrin, lambda. Eight samples were not used in the assessment because the laboratory data reporting limit(s) was above the objective and therefore the results could not be quantified with the level of certainty required by the Listing Policy. | ||||
Data Reference: | Data for Various Pollutants in East San Joaquin, 2004-2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. (Water Quality Control Plan, Central Valley Region, Sacramento River Basin and San Joaquin River Basin) | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | The Basin Plan states: "Where valid testing has developed 96-hour LC50 values for aquatic organisms..., the Board will consider one tenth of this value for the most sensitive species tested as the upper limit (daily maximum) for the protection of aquatic life... or [O]ther available information on the pesticide..." Aquatic life should not be affected unacceptably if the 4-day average concentration of Cyhalothrin, 0.0005 ug/L, is not exceeded more than once every three years on the average (UC Davis Aquatic Life Criterion). | ||||
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 Merced River, Lower (McSwain Reservoir to San Joaquin River) was collected at 1 monitoring site [Merced River @ Santa Fe - 535XMRSFD] | ||||
Temporal Representation: | Data was collected over the time period 2/12/2007-9/11/2007. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0 was followed. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0. | ||||
|
|||||
LOE ID: | 67215 | ||||
Pollutant: | Cyhalothrin, Lambda | ||||
LOE Subgroup: | Pollutant-Sediment | ||||
Matrix: | Sediment | ||||
Fraction: | Total | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 0 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | The sample was not assessed because, after the laboratory method detection limit result was organic carbon-normalized, the result was above the evaluation guideline and, therefore the result could not be quantified with the level of certainty required by the Listing Policy. | ||||
Data Reference: | Statewide Stream Pollution Trends Study 2008 | ||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. Discharges shall not result in pesticide concentrations in bottom sediments or aquatic life that adversely affect beneficial uses. (Water Quality Control Plan, Central Valley Region, Sacramento River and San Joaquin River Basins) | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | The evaluation guideline value for lambda-cyhalothrin, 0.044 ug/g OC, is one-tenth of the median lethal concentration for H. azteca (LC50; 0.44 ug/g OC). The LC50 (0.44 ug/g OC) is the geometric mean of OC-normalized LC50 values for lambda-cyhalothrin from Amweg et al. (2005). | ||||
Guideline Reference: | Use and Toxicity of Pyrethroid Pesticides in the Central Valley, California, USA. Environmental Toxicology and Chemistry, 24:966-972, with erratum 24:No. 5 | ||||
Spatial Representation: | Data for this line of evidence was collected at one monitoring site [ Merced River @ River Road - 535MER546] | ||||
Temporal Representation: | Data was collected on 7/23/2008. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The SWAMP QAPP (2008) was followed. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
DECISION ID |
72408 |
Region 5 |
Merced River, Lower (McSwain Reservoir to San Joaquin River) |
||
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 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 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 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 the zero samples exceed 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 are 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: | 67217 | ||||
Pollutant: | Cypermethrin | ||||
LOE Subgroup: | Pollutant-Sediment | ||||
Matrix: | Sediment | ||||
Fraction: | Total | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 0 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | The sample was not assessed because, after the laboratory method detection limit result was organic carbon-normalized, the result was above the evaluation guideline and, therefore the result could not be quantified with the level of certainty required by the Listing Policy. | ||||
Data Reference: | Statewide Stream Pollution Trends Study 2008 | ||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. Discharges shall not result in pesticide concentrations in bottom sediments or aquatic life that adversely affect beneficial uses. (Water Quality Control Plan, Central Valley Region, Sacramento River and San Joaquin River Basins) | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | The evaluation guideline value for cypermethrin, 0.03 ug/g OC, is one-tenth of the median lethal concentration for H. azteca (LC50; 0.3 ug/g OC). The LC50 is the geometric mean of OC-normalized LC50 values for cypermethrin from Maund et al. (2002). | ||||
Guideline Reference: | Partitioning, bioavailability, and toxicity of the pyrethroid insecticide cypermethrin in sediments. Environmental Toxicology and Chemistry 21:9-15 | ||||
Spatial Representation: | Data for this line of evidence was collected at one monitoring site [ Merced River @ River Road - 535MER546] | ||||
Temporal Representation: | Data was collected on 7/23/2008. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The SWAMP QAPP (2008) was followed. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
|
|||||
LOE ID: | 67216 | ||||
Pollutant: | Cypermethrin | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold 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 Ag Waiver data for Merced River, Lower (McSwain Reservoir to San Joaquin River) to determine beneficial use support and results are as follows: 0 of 0 samples exceed the criterion for Cypermethrin, total. Eight samples were not used in the assessment because the laboratory data reporting limit(s) was above the objective and therefore the results could not be quantified with the level of certainty required by the Listing Policy. | ||||
Data Reference: | Data for Various Pollutants in East San Joaquin, 2004-2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. (Water Quality Control Plan, Central Valley Region, Sacramento River Basin and San Joaquin River Basin) | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | The Basin Plan states: "Where valid testing has developed 96-hour LC50 values for aquatic organisms..., the Board will consider one tenth of this value for the most sensitive species tested as the upper limit (daily maximum) for the protection of aquatic life... or [O]ther available information on the pesticide..." Aquatic life should not be affected unacceptably if the 4-day average concentration of Cypermethrin, 0.0002 ug/L, or the 1-hour average concentration, 0.001 ug/L, is not exceeded more than once every three years on the average (UC Davis Aquatic Life Criterion). | ||||
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 Merced River, Lower (McSwain Reservoir to San Joaquin River) was collected at 1 monitoring site [Merced River @ Santa Fe - 535XMRSFD] | ||||
Temporal Representation: | Data was collected over the time period 2/12/2007-9/11/2007. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0 was followed. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0. | ||||
DECISION ID |
91773 |
Region 5 |
Merced River, Lower (McSwain Reservoir to San Joaquin River) |
||
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.
Three lines of evidence are available in the administrative record to assess this pollutant. Zero of the zero water samples exceed the water quality objective for MUN, and zero of the one sediment samples exceed the evaluation guideline for COLD. 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 water samples exceed the water quality objective for MUN, and zero of the one sediment samples exceed the evaluation guideline for COLD 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 are 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: | 78837 | ||||
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: | The DDD method detection limit for all 23 analyzed sample results collected from Merced River, Lower (McSwain Reservoir to San Joaquin River) are greater than the criterion; therefore, the data could not be assessed with the accuracy required by the Listing Policy. | ||||
Data Reference: | Data for Metals and Nutrients for the City of Anderson, 2006-2008. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Sacramento/San Joaquin River Basin Plan (CVRWQCB, 2007) Pesticides: Total identifiable persistent chlorinated hydrocarbon pesticides shall not be present in the water column at concentrations detectable within the accuracy of analytical methods approved by the Environmental Protection Agency or the Executive Officer.- California Toxics Rule Criteria (USEPA, 2000), for Inland Surface Waters based on drinking water and aquatic organism consumption. The criteria are based on human health protection for carcinogenicity at 1-in-a-million risk level (30-day average) with a limit of 0.00083 ug/L for DDD | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Objective/Criterion Reference: | National Recommended Water Quality Criteria. United States Environmental Protection Agency. Office of Water. Office of Science and Technology | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Twenty-three water samples collected from Merced River, Lower (McSwain Reservoir to San Joaquin River) [Merced River @ Santa Fe - 535XMRSFD] were analyzed for DDD(p,p') | ||||
Temporal Representation: | The samples were collected monthly on 23 dates between 2/12/2007 and 4/21/2009 | ||||
Environmental Conditions: | |||||
QAPP Information: | The data was collected under the Irrigated Lands Regulatory Program. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 67218 | ||||
Pollutant: | DDD (Dichlorodiphenyldichloroethane) | ||||
LOE Subgroup: | Pollutant-Sediment | ||||
Matrix: | Sediment | ||||
Fraction: | Total | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | The sample result did not exceed the evaluation guideline value (28.0 ug/Kg dry weight). | ||||
Data Reference: | Statewide Stream Pollution Trends Study 2008 | ||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. Discharges shall not result in pesticide concentrations in bottom sediments or aquatic life that adversely affect beneficial uses. (Water Quality Control Plan, Central Valley Region, Sacramento River and San Joaquin River Basins) | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | In freshwater sediments, the probable effect concentration (predictive of sediment toxicity) for the sum of DDD (o,p' + p,p') is 28.0 ug/Kg dry weight (MacDonald et al. 2000). | ||||
Guideline Reference: | Development and evaluation of consensus-based sediment quality guidelines for freshwater ecosystems. Environmental Contamination and Toxicology. 39: 20-31 | ||||
Spatial Representation: | Data for this line of evidence was collected at one monitoring site [ Merced River @ River Road - 535MER546] | ||||
Temporal Representation: | Data was collected on 7/23/2008. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The SWAMP QAPP (2008) was followed. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
DECISION ID |
86515 |
Region 5 |
Merced River, Lower (McSwain Reservoir to San Joaquin River) |
||
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 3.11 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 water samples exceed the water quality objective for MUN, and zero of the one sediment samples exceed the evaluation guideline for COLD. 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 water samples exceed the water quality objective for MUN, and zero of the one sediment samples exceed the evaluation guideline for COLD 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 are 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: | 67223 | ||||
Pollutant: | DDE (Dichlorodiphenyldichloroethylene) | ||||
LOE Subgroup: | Pollutant-Sediment | ||||
Matrix: | Sediment | ||||
Fraction: | Total | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | The sample result did not exceed the evaluation guideline value (31.3 ug/Kg dry weight). | ||||
Data Reference: | Statewide Stream Pollution Trends Study 2008 | ||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. Discharges shall not result in pesticide concentrations in bottom sediments or aquatic life that adversely affect beneficial uses. (Water Quality Control Plan, Central Valley Region, Sacramento River and San Joaquin River Basins) | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | In freshwater sediments, the probable effect concentration (predictive of sediment toxicity) for the sum of DDE is 31.3 ug/Kg dry weight (MacDonald et al. 2000). | ||||
Guideline Reference: | Development and evaluation of consensus-based sediment quality guidelines for freshwater ecosystems. Environmental Contamination and Toxicology. 39: 20-31 | ||||
Spatial Representation: | Data for this line of evidence was collected at one monitoring site [ Merced River @ River Road - 535MER546] | ||||
Temporal Representation: | Data was collected on 7/23/2008. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The SWAMP QAPP (2008) was followed. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
|
|||||
LOE ID: | 78889 | ||||
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: | The DDE method detection limit for all 23 analyzed sample results collected from Merced River, Lower (McSwain Reservoir to San Joaquin River) are greater than the criterion; therefore, the data could not be assessed with the accuracy required by the Listing Policy. | ||||
Data Reference: | Data for Metals and Nutrients for the City of Anderson, 2006-2008. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Sacramento/San Joaquin River Basin Plan (CVRWQCB, 2007) Pesticides: Total identifiable persistent chlorinated hydrocarbon pesticides shall not be present in the water column at concentrations detectable within the accuracy of analytical methods approved by the Environmental Protection Agency or the Executive Officer.- California Toxics Rule Criteria (USEPA, 2000), for Inland Surface Waters based on drinking water and aquatic organism consumption. The criteria are based on human health protection for carcinogenicity at 1-in-a-million risk level (30-day average) with a limit of 0.00059 ug/L for DDE | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Objective/Criterion Reference: | National Recommended Water Quality Criteria. United States Environmental Protection Agency. Office of Water. Office of Science and Technology | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Twenty-three water samples collected from Merced River, Lower (McSwain Reservoir to San Joaquin River) [Merced River @ Santa Fe - 535XMRSFD] were analyzed for DDE(p,p') | ||||
Temporal Representation: | The samples were collected monthly on 23 dates between 2/12/2007 and 4/21/2009 | ||||
Environmental Conditions: | |||||
QAPP Information: | The data was collected under the Irrigated Lands Regulatory Program. | ||||
QAPP Information Reference(s): | |||||
DECISION ID |
91774 |
Region 5 |
Merced River, Lower (McSwain Reservoir to San Joaquin River) |
||
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.
Three lines of evidence are available in the administrative record to assess this pollutant. Zero of the zero water samples exceed the water quality criteria for MUN, zero of the zero water samples exceed the water quality criteria for COLD, and zero of the one sediment samples exceed the evaluation guideline for COLD. 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 water samples exceed the water quality criteria for MUN, zero of the zero water samples exceed the water quality criteria for COLD, and zero of the one sediment samples exceed the evaluation guideline for COLD 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 are 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: | 67225 | ||||
Pollutant: | DDT (Dichlorodiphenyltrichloroethane) | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
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 Ag Waiver data for Merced River, Lower (McSwain Reservoir to San Joaquin River) to determine beneficial use support and results are as follows: 0 of 0 samples exceed the criterion for DDT(p,p). Twenty-three samples were not used in the assessment because the laboratory data reporting limit was above the objective and therefore the results could not be quantified with the level of certainty required by the Listing Policy. | ||||
Data Reference: | Data for Various Pollutants in East San Joaquin, 2004-2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The criterion for total DDT to protect human health from consumption of water and organisms is 0.00059 ug/L (California Toxics Rule). | ||||
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 Merced River, Lower (McSwain Reservoir to San Joaquin River) was collected at 1 monitoring site [Merced River @ Santa Fe - 535XMRSFD] | ||||
Temporal Representation: | Data was collected over the time period 2/12/2007-4/21/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0 was followed. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0. | ||||
|
|||||
LOE ID: | 67224 | ||||
Pollutant: | DDT (Dichlorodiphenyltrichloroethane) | ||||
LOE Subgroup: | Pollutant-Sediment | ||||
Matrix: | Sediment | ||||
Fraction: | Total | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | The sample result did not exceed the evaluation guideline value (62.9 ug/Kg dry weight). | ||||
Data Reference: | Statewide Stream Pollution Trends Study 2008 | ||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. Discharges shall not result in pesticide concentrations in bottom sediments or aquatic life that adversely affect beneficial uses. (Water Quality Control Plan, Central Valley Region, Sacramento River and San Joaquin River Basins) | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | In freshwater sediments, the probable effect concentration (predictive of sediment toxicity) for the sum of DDT is 62.9 ug/Kg dry weight (MacDonald et al. 2000). | ||||
Guideline Reference: | Development and evaluation of consensus-based sediment quality guidelines for freshwater ecosystems. Environmental Contamination and Toxicology. 39: 20-31 | ||||
Spatial Representation: | Data for this line of evidence was collected at one monitoring site [ Merced River @ River Road - 535MER546] | ||||
Temporal Representation: | Data was collected on 7/23/2008. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The SWAMP QAPP (2008) was followed. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
|
|||||
LOE ID: | 67226 | ||||
Pollutant: | DDT (Dichlorodiphenyltrichloroethane) | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold 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 Ag Waiver data for Merced River, Lower (McSwain Reservoir to San Joaquin River) to determine beneficial use support and results are as follows: 0 of 0 samples exceed the criterion for DDT(p,p). Twenty three samples were not used in the assessment because the laboratory data reporting limit was above the objective and therefore the results could not be quantified with the level of certainty required by the Listing Policy. | ||||
Data Reference: | Data for Various Pollutants in East San Joaquin, 2004-2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The DDT criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is 0.001 ug/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 Merced River, Lower (McSwain Reservoir to San Joaquin River) was collected at 1 monitoring site [Merced River @ Santa Fe - 535XMRSFD] | ||||
Temporal Representation: | Data was collected over the time period 2/12/2007-4/21/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0 was followed. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0. | ||||
DECISION ID |
75717 |
Region 5 |
Merced River, Lower (McSwain Reservoir to San Joaquin River) |
||
Pollutant: | Dacthal |
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. One line of evidence is available in the administrative record to assess this pollutant. Zero of 143 water samples exceed the narrative toxicity 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. Zero of 143 water samples contained dacthal at concentrations above the Evaluation Guideline for dacthal of 70 ug/L (none of the samples exceeded the narrative toxicity objective), and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 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: | 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: | 26155 | ||||
Pollutant: | Dacthal | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 143 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Zero of 143 water samples collected from Merced River by the United States Geological Survey, under the National Water Information System program, between January 2000 and August 2005 exceeded the USEPA National Ambient Water Quality Criterion for dacthal (DCPA) of 70 ug/L. | ||||
Data Reference: | National Water Quality Assessment database, Sacramento Study Unit data | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations that produce detrimental physiological responses in human, plant, animal, or aquatic life (CRWQCB, 2007). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | USEPA National Ambient Water Quality Criterion for dacthal (DCPA) of 70 ug/L. | ||||
Guideline Reference: | 2006 edition of the drinking water standards and health advisories. EPA 822-R-03-013 | ||||
Spatial Representation: | Water samples were collected from the Merced River at River Road. | ||||
Temporal Representation: | Samples were collected hourly, daily or weekly from the Merced River between January 2000 and August 2005. | ||||
Environmental Conditions: | |||||
QAPP Information: | Data Quality: Good: U.S. Geological Survey, variously dated, National field manual for the collection of water-quality data: U.S. Geological Survey Techniques of Water-Resources Investigations, book 9, chaps. A1-A9, available online at http://pubs.water.usgs.gov/twri9A | ||||
QAPP Information Reference(s): | National field manual for the collection of water quality data. Reston, VA. U.S. Geological Survey. Office of Water Quality | ||||
QAPP Information Reference(s): | Field measurements: U.S. Geological Survey Techniques of Water-Resources Investigations, book 9, chap. A6. In United States Geological Survey (USGS). Variously dated. National field manual for the collection of water-quality data: U.S. Geological Survey Techniques of Water-Resources Investigations, book 9, chaps. A1-A9, available online at http://pubs.water.usgs.gov/twri9A. | ||||
DECISION ID |
85973 |
Region 5 |
Merced River, Lower (McSwain Reservoir to San Joaquin River) |
||
Pollutant: | Deltamethrin |
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.
One line of evidence is available in the administrative record to assess this pollutant. Zero of the zero samples 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 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 the zero samples exceed 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 are 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: | 67227 | ||||
Pollutant: | Deltamethrin | ||||
LOE Subgroup: | Pollutant-Sediment | ||||
Matrix: | Sediment | ||||
Fraction: | Total | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 0 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | The sample was not assessed because, after the laboratory method detection limit result was organic carbon-normalized, the result was above the evaluation guideline and, therefore the result could not be quantified with the level of certainty required by the Listing Policy. | ||||
Data Reference: | Statewide Stream Pollution Trends Study 2008 | ||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. Discharges shall not result in pesticide concentrations in bottom sediments or aquatic life that adversely affect beneficial uses. (Water Quality Control Plan, Central Valley Region, Sacramento River and San Joaquin River Basins) | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | The evaluation guideline value for deltamethrin, 0.079 ug/g OC, is one-tenth of the median lethal concentration for H. azteca (LC50; 0.79 ug/g OC). The LC50 (0.79 ug/g OC) is the geometric mean of OC-normalized LC50 values for deltamethrin from Amweg et al. (2005). | ||||
Guideline Reference: | Use and Toxicity of Pyrethroid Pesticides in the Central Valley, California, USA. Environmental Toxicology and Chemistry, 24:966-972, with erratum 24:No. 5 | ||||
Spatial Representation: | Data for this line of evidence was collected at one monitoring site [ Merced River @ River Road - 535MER546] | ||||
Temporal Representation: | Data was collected on 7/23/2008. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The SWAMP QAPP (2008) was followed. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
DECISION ID |
86897 |
Region 5 |
Merced River, Lower (McSwain Reservoir to San Joaquin River) |
||
Pollutant: | Dicofol |
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. Zero of the twenty-three samples 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 the twenty-three samples exceed the evaluation guideline and this does not exceed 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 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: | 67232 | ||||
Pollutant: | Dicofol | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 23 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed Ag Waiver data for Merced River, Lower (McSwain Reservoir to San Joaquin River) to determine beneficial use support and results are as follows: 0 of 23 samples exceed the criterion for Dicofol. | ||||
Data Reference: | Data for Various Pollutants in East San Joaquin, 2004-2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. (Water Quality Control Plan, Central Valley Region, Sacramento River Basin and San Joaquin River Basin) | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | The Basin Plan states: "Where valid testing has developed 96-hour LC50 values for aquatic organisms..., the Board will consider one tenth of this value for the most sensitive species tested as the upper limit (daily maximum) for the protection of aquatic life... or [O]ther available information on the pesticide..." The evaluation guideline for Dicofol, 5.9 ug/L, is the maximum acceptable toxicicant concentration (MATC) for Oncorhyncus mykiss (Rainbow trout); USEPA Office of Pesticide Programs Ecotoxicity database. | ||||
Guideline Reference: | OPP Pesticide Ecotoxicity Database. | ||||
Spatial Representation: | Data for this line of evidence for Merced River, Lower (McSwain Reservoir to San Joaquin River) was collected at 1 monitoring site [Merced River @ Santa Fe - 535XMRSFD] | ||||
Temporal Representation: | Data was collected over the time period 2/12/2007-4/21/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0 was followed. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0. | ||||
DECISION ID |
91983 |
Region 5 |
Merced River, Lower (McSwain Reservoir to San Joaquin River) |
||
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 3.2 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. Zero of the zero water samples exceed the water quality criteria for MUN, zero of the twenty-three water samples exceed the water quality criteria for COLD, and zero of the one sediment samples exceed the evaluation guideline for COLD. 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 water samples exceed the water quality criteria for MUN, zero of the twenty-three water samples exceed the water quality criteria for COLD, and zero of the one sediment samples exceed the evaluation guideline for COLD and this does not exceed 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 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: | 67237 | ||||
Pollutant: | Dieldrin | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 23 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed Ag Waiver data for Merced River, Lower (McSwain Reservoir to San Joaquin River) to determine beneficial use support and results are as follows: 0 of 23 samples exceed the criterion for Dieldrin. | ||||
Data Reference: | Data for Various Pollutants in East San Joaquin, 2004-2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Dieldrin criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is 0.056 ug/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 Merced River, Lower (McSwain Reservoir to San Joaquin River) was collected at 1 monitoring site [Merced River @ Santa Fe - 535XMRSFD] | ||||
Temporal Representation: | Data was collected over the time period 2/12/2007-4/21/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0 was followed. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0. | ||||
|
|||||
LOE ID: | 67234 | ||||
Pollutant: | Dieldrin | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
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 Ag Waiver data for Merced River, Lower (McSwain Reservoir to San Joaquin River) to determine beneficial use support and results are as follows: 0 of 0 samples exceed the criterion for Dieldrin. Twenty-three samples were not used in the assessment because the laboratory data reporting limit(s) was above the objective and therefore the results could not be quantified with the level of certainty required by the Listing Policy. | ||||
Data Reference: | Data for Various Pollutants in East San Joaquin, 2004-2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The criterion for Dieldrin to protect human health from the consumption of water and organisms is 0.00014 ug/L (California Toxics Rule). | ||||
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 Merced River, Lower (McSwain Reservoir to San Joaquin River) was collected at 1 monitoring site [Merced River @ Santa Fe - 535XMRSFD] | ||||
Temporal Representation: | Data was collected over the time period 2/12/2007-4/21/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0 was followed. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0. | ||||
|
|||||
LOE ID: | 67233 | ||||
Pollutant: | Dieldrin | ||||
LOE Subgroup: | Pollutant-Sediment | ||||
Matrix: | Sediment | ||||
Fraction: | Total | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | The sample result did not exceed the evaluation guideline value (61.8 ug/Kg dry weight). | ||||
Data Reference: | Statewide Stream Pollution Trends Study 2008 | ||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. Discharges shall not result in pesticide concentrations in bottom sediments or aquatic life that adversely affect beneficial uses. (Water Quality Control Plan, Central Valley Region, Sacramento River and San Joaquin River Basins) | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | In freshwater sediments, the probable effect concentration (predictive of sediment toxicity) for dieldrin is 61.8 ug/Kg dry weight (MacDonald et al. 2000). | ||||
Guideline Reference: | Development and evaluation of consensus-based sediment quality guidelines for freshwater ecosystems. Environmental Contamination and Toxicology. 39: 20-31 | ||||
Spatial Representation: | Data for this line of evidence was collected at one monitoring site [ Merced River @ River Road - 535MER546] | ||||
Temporal Representation: | Data was collected on 7/23/2008. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The SWAMP QAMP (2002) was used for data before Septemper 1, 2008 and SWAMP QAPP (2008) was thereafter. | ||||
QAPP Information Reference(s): | Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version) | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
DECISION ID |
72588 |
Region 5 |
Merced River, Lower (McSwain Reservoir to San Joaquin River) |
||
Pollutant: | Dimethoate |
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. 0 of 24 samples 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 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. 0 of 24 samples exceed the evaluation guideline and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
Regional Board Decision Recommendation: | 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: | 67238 | ||||
Pollutant: | Dimethoate | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 24 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed Ag Waiver data for Merced River, Lower (McSwain Reservoir to San Joaquin River) to determine beneficial use support and results are as follows: 0 of 24 samples exceed the criterion for Dimethoate. | ||||
Data Reference: | Data for Various Pollutants in East San Joaquin, 2004-2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. (Water Quality Control Plan, Central Valley Region, Sacramento River Basin and San Joaquin River Basin) | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | The Basin Plan states: "Where valid testing has developed 96-hour LC50 values for aquatic organisms..., the Board will consider one tenth of this value for the most sensitive species tested as the upper limit (daily maximum) for the protection of aquatic life... or [O]ther available information on the pesticide..." The evaluation guideline for dimethoate, 4.3 ug/L, is one-tenth of the median lethal concentration (LC50 = 43 ug/L) for Pteronarcys californica (Stonefly); USEPA Office of Pesticide Programs Ecotoxicity database. | ||||
Guideline Reference: | OPP Pesticide Ecotoxicity Database. | ||||
Spatial Representation: | Data for this line of evidence for Merced River, Lower (McSwain Reservoir to San Joaquin River) was collected at 1 monitoring site [Merced River @ Santa Fe - 535XMRSFD] | ||||
Temporal Representation: | Data was collected over the time period 2/12/2007-5/19/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0 was followed. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0. | ||||
DECISION ID |
91984 |
Region 5 |
Merced River, Lower (McSwain Reservoir to San Joaquin River) |
||
Pollutant: | Disulfoton |
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.
One line of evidence is available in the administrative record to assess this pollutant. Zero of the eight samples 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 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 the eight samples exceed 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 are 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: | 67239 | ||||
Pollutant: | Disulfoton | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 8 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed Ag Waiver data for Merced River, Lower (McSwain Reservoir to San Joaquin River) to determine beneficial use support and results are as follows: 0 of 8 samples exceed the criterion for Disulfoton. | ||||
Data Reference: | Data for Various Pollutants in East San Joaquin, 2004-2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. (Water Quality Control Plan, Central Valley Region, Sacramento River Basin and San Joaquin River Basin) | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | The USEPA National Recommended Water Quality criterion for disulfoton in freshwater (0.05 ug/L) is an aquatic life maximum (instantaneous) level. | ||||
Guideline Reference: | National Recommended Water Quality Criteria. United States Environmental Protection Agency. Office of Water. Office of Science and Technology | ||||
Spatial Representation: | Data for this line of evidence for Merced River, Lower (McSwain Reservoir to San Joaquin River) was collected at 1 monitoring site [Merced River @ Santa Fe - 535XMRSFD] | ||||
Temporal Representation: | Data was collected over the time period 2/12/2007-5/19/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0 was followed. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0. | ||||
DECISION ID |
83499 |
Region 5 |
Merced River, Lower (McSwain Reservoir to San Joaquin River) |
||
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 the sixteen samples 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 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 the sixteen samples exceed the evaluation guideline and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
Regional Board Decision Recommendation: | 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: | 79625 | ||||
Pollutant: | Diuron | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 16 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | State Water Board staff assessed ILRP data for Merced River, Lower (McSwain Reservoir to San Joaquin River) to determine beneficial use support and results are as follows: 0 of 16 samples exceed the criterion for Diuron. | ||||
Data Reference: | Data for Various Pollutants in East San Joaquin, 2004-2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Water Quality Control Plan, Central Valley Region Sacramento River Basin and San Joaquin River Basin: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | The Basin Plan states: "Where valid testing has developed 96-hour LC50 values for aquatic organisms..., the Board will consider one tenth of this value for the most sensitive species tested as the upper limit (daily maximum) for the protection of aquatic life... or [O]ther available information on the pesticide..." Aquatic life should not be affected unacceptably if the 4-day average concentration of Diuron, 1.3 ug/L, is not exceeded more than once every three years on the average (UC Davis Aquatic Life Criterion). | ||||
Guideline Reference: | Aquatic life water quality criteria derived via the UC Davis method: III. Diuron. Reviews of Environmental Contamination and Toxicology 216:105-141. | ||||
Spatial Representation: | Data for this line of evidence for Merced River, Lower (McSwain Reservoir to San Joaquin River) was collected at 1 monitoring site [ Merced River @ Santa Fe - 535XMRSFD] | ||||
Temporal Representation: | Data was collected over the time period 2/12/2007-9/23/2008. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0 was followed. | ||||
QAPP Information Reference(s): | |||||
DECISION ID |
91985 |
Region 5 |
Merced River, Lower (McSwain Reservoir to San Joaquin River) |
||
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 3.2 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. Zero of the twenty-three water samples exceed the water quality criteria for MUN, zero of the twenty-three water samples exceed the water quality criteria for COLD, and zero of the one sediment samples exceed the evaluation guideline for COLD. 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 twenty-three water samples exceed the water quality criteria for MUN, zero of the twenty-three water samples exceed the water quality criteria for COLD, and zero of the one sediment samples exceed the evaluation guideline for COLD and this does not exceed 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 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: | 67069 | ||||
Pollutant: | Endrin | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 23 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed Ag Waiver data for Merced River, Lower (McSwain Reservoir to San Joaquin River) to determine beneficial use support and results are as follows: 0 of 23 samples exceed the criterion for Endrin. | ||||
Data Reference: | Data for Various Pollutants in East San Joaquin, 2004-2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Endrin criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is 0.036 ug/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 Merced River, Lower (McSwain Reservoir to San Joaquin River) was collected at 1 monitoring site [Merced River @ Santa Fe - 535XMRSFD] | ||||
Temporal Representation: | Data was collected over the time period 2/12/2007-4/21/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0 was followed. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0. | ||||
|
|||||
LOE ID: | 67067 | ||||
Pollutant: | Endrin | ||||
LOE Subgroup: | Pollutant-Sediment | ||||
Matrix: | Sediment | ||||
Fraction: | Total | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | The sample result did not exceed the evaluation guideline value (207 ug/Kg dry weight). | ||||
Data Reference: | Statewide Stream Pollution Trends Study 2008 | ||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. Discharges shall not result in pesticide concentrations in bottom sediments or aquatic life that adversely affect beneficial uses. (Water Quality Control Plan, Central Valley Region, Sacramento River and San Joaquin River Basins) | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | In freshwater sediments, the probable effect concentration (predictive of sediment toxicity) for endrin is 207 ug/Kg dry weight (MacDonald et al. 2000). | ||||
Guideline Reference: | Development and evaluation of consensus-based sediment quality guidelines for freshwater ecosystems. Environmental Contamination and Toxicology. 39: 20-31 | ||||
Spatial Representation: | Data for this line of evidence was collected at one monitoring site [ Merced River @ River Road - 535MER546] | ||||
Temporal Representation: | Data was collected on 7/23/2008. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The SWAMP QAMP (2002) was used for data before Septemper 1, 2008 and SWAMP QAPP (2008) was thereafter. | ||||
QAPP Information Reference(s): | Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version) | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
|
|||||
LOE ID: | 67068 | ||||
Pollutant: | Endrin | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 23 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed Ag Waiver data for Merced River, Lower (McSwain Reservoir to San Joaquin River) to determine beneficial use support and results are as follows: 0 of 23 samples exceed the criterion for Endrin. | ||||
Data Reference: | Data for Various Pollutants in East San Joaquin, 2004-2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Endrin criterion for the protection of human health from the consumption of water and organisms is 0.76 ug/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 Merced River, Lower (McSwain Reservoir to San Joaquin River) was collected at 1 monitoring site [Merced River @ Santa Fe - 535XMRSFD] | ||||
Temporal Representation: | Data was collected over the time period 2/12/2007-4/21/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0 was followed. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0. | ||||
DECISION ID |
68257 |
Region 5 |
Merced River, Lower (McSwain Reservoir to San Joaquin River) |
||
Pollutant: | Esfenvalerate/Fenvalerate |
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 3.11 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 eight sediment samples exceed the evaluation guideline for COLD, and zero of the zero water samples exceed the water quality objective for COLD. 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 eight sediment samples exceed the evaluation guideline for COLD, and zero of the zero water samples exceed the water quality objective for COLD 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 are 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: | 67079 | ||||
Pollutant: | Esfenvalerate/Fenvalerate | ||||
LOE Subgroup: | Pollutant-Sediment | ||||
Matrix: | Sediment | ||||
Fraction: | Total | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 0 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | The sample was not assessed because, after the laboratory method detection limit result was organic carbon-normalized, the result was above the evaluation guideline and, therefore the result could not be quantified with the level of certainty required by the Listing Policy. | ||||
Data Reference: | Statewide Stream Pollution Trends Study 2008 | ||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. Discharges shall not result in pesticide concentrations in bottom sediments or aquatic life that adversely affect beneficial uses. (Water Quality Control Plan, Central Valley Region, Sacramento River and San Joaquin River Basins) | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | The evaluation guideline value for esfenvalerate/fenvalerate, 0.15 ug/g OC, is one-tenth of the median lethal concentration for H. azteca (LC50; 1.5 ug/g OC). The LC50 (1.5 ug/g OC) is the geometric mean of OC-normalized LC50 values for esfenvalerate/fenvalerate from Amweg et al. (2005). | ||||
Guideline Reference: | Use and Toxicity of Pyrethroid Pesticides in the Central Valley, California, USA. Environmental Toxicology and Chemistry, 24:966-972, with erratum 24:No. 5 | ||||
Spatial Representation: | Data for this line of evidence was collected at one monitoring site [ Merced River @ River Road - 535MER546] | ||||
Temporal Representation: | Data was collected on 7/23/2008. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The SWAMP QAPP (2008) was followed. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
|
|||||
LOE ID: | 67078 | ||||
Pollutant: | Esfenvalerate/Fenvalerate | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 8 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed Ag Waiver data for Merced River, Lower (McSwain Reservoir to San Joaquin River) to determine beneficial use support and results are as follows: 0 of 8 samples exceed the criterion for Esfenvalerate/Fenvalerate. | ||||
Data Reference: | Data for Various Pollutants in East San Joaquin, 2004-2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. (Water Quality Control Plan, Central Valley Region, Sacramento River Basin and San Joaquin River Basin) | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | The Basin Plan states: "Where valid testing has developed 96-hour LC50 values for aquatic organisms..., the Board will consider one tenth of this value for the most sensitive species tested as the upper limit (daily maximum) for the protection of aquatic life... or [O]ther available information on the pesticide..." The evaluation guideline for fenvalerate, 0.113 ug/L, is one-tenth the LC50 (1.13 ug/L) for Pimephales promelas (Fathead minnow); USEPA Office of Pesticide Programs Ecotoxicity database. | ||||
Guideline Reference: | OPP Pesticide Ecotoxicity Database. | ||||
Spatial Representation: | Data for this line of evidence for Merced River, Lower (McSwain Reservoir to San Joaquin River) was collected at 1 monitoring site [Merced River @ Santa Fe - 535XMRSFD] | ||||
Temporal Representation: | Data was collected over the time period 2/12/2007-9/11/2007. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0 was followed. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0. | ||||
DECISION ID |
86011 |
Region 5 |
Merced River, Lower (McSwain Reservoir to San Joaquin River) |
||
Pollutant: | Fenpropathrin |
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.
One line of evidence is available in the administrative record to assess this pollutant. Zero of the zero samples 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 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 the zero samples exceed 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 are 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: | 67080 | ||||
Pollutant: | Fenpropathrin | ||||
LOE Subgroup: | Pollutant-Sediment | ||||
Matrix: | Sediment | ||||
Fraction: | Total | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 0 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | The sample was not assessed because, after the laboratory method detection limit result was organic carbon-normalized, the result was above the evaluation guideline and, therefore the result could not be quantified with the level of certainty required by the Listing Policy. | ||||
Data Reference: | Statewide Stream Pollution Trends Study 2008 | ||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. Discharges shall not result in pesticide concentrations in bottom sediments or aquatic life that adversely affect beneficial uses. (Water Quality Control Plan, Central Valley Region, Sacramento River and San Joaquin River Basins) | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | The evaluation guideline value for fenpropathrin, 0.1 ug/g OC, is one-tenth of the median lethal concentration for H. azteca (LC50; one ug/g OC). The LC50 is the geometric mean of OC-normalized LC50 values for fenpropathrin (Ding et al. 2011). | ||||
Guideline Reference: | Toxicity of Sediment-Associated Pesticides to Chironomus dilutus and Hyalella azteca. Arch. Environ. Contam. Toxicol. 61:83Āæ92. | ||||
Spatial Representation: | Data for this line of evidence was collected at one monitoring site [ Merced River @ River Road - 535MER546] | ||||
Temporal Representation: | Data was collected on 7/23/2008. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The SWAMP QAPP (2008) was followed. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
DECISION ID |
86012 |
Region 5 |
Merced River, Lower (McSwain Reservoir to San Joaquin River) |
||
Pollutant: | Glyphosate |
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 sixteen samples exceed the water quality objective for MUN, and zero of the sixteen samples exceed the evaluation guideline for COLD. 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 the sixteen samples exceed the water quality objective for MUN, and zero of the sixteen samples exceed the evaluation guideline for COLD 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: | 67086 | ||||
Pollutant: | Glyphosate | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 16 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed Ag Waiver data for Merced River, Lower (McSwain Reservoir to San Joaquin River) to determine beneficial use support and results are as follows: 0 of 16 samples exceed the criterion for Glyphosate. | ||||
Data Reference: | Data for Various Pollutants in East San Joaquin, 2004-2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. (Water Quality Control Plan, Central Valley Region, Sacramento River Basin and San Joaquin River Basin) | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | The Basin Plan states: "Where valid testing has developed 96-hour LC50 values for aquatic organisms..., the Board will consider one tenth of this value for the most sensitive species tested as the upper limit (daily maximum) for the protection of aquatic life... or [O]ther available information on the pesticide..." The evaluation guideline for glyphosate, 5,500 ug/L, is one-tenth of the median lethal concentration (LC50 = 55,000 ug/L) for Chironimus plumosus (Midge). (USEPA Office of Pesticide Programs Ecotoxicity database) | ||||
Guideline Reference: | OPP Pesticide Ecotoxicity Database. | ||||
Spatial Representation: | Data for this line of evidence for Merced River, Lower (McSwain Reservoir to San Joaquin River) was collected at 1 monitoring site [Merced River @ Santa Fe - 535XMRSFD] | ||||
Temporal Representation: | Data was collected over the time period 2/12/2007-9/23/2008. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0 was followed. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0. | ||||
|
|||||
LOE ID: | 67087 | ||||
Pollutant: | Glyphosate | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 16 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed Ag Waiver data for Merced River, Lower (McSwain Reservoir to San Joaquin River) to determine beneficial use support and results are as follows: 0 of 16 samples exceed the criterion for Glyphosate. | ||||
Data Reference: | Data for Various Pollutants in East San Joaquin, 2004-2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The California primary maximum contaminant level for Glyphosate is 700 ug/L. | ||||
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 Merced River, Lower (McSwain Reservoir to San Joaquin River) was collected at 1 monitoring site [Merced River @ Santa Fe - 535XMRSFD] | ||||
Temporal Representation: | Data was collected over the time period 2/12/2007-9/23/2008. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0 was followed. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0. | ||||
DECISION ID |
92188 |
Region 5 |
Merced River, Lower (McSwain Reservoir to San Joaquin River) |
||
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 zero samples exceed the water quality criteria for MUN, and zero of the zero samples exceed the water quality criteria for COLD. 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 water quality criteria for MUN, and zero of the zero samples exceed the water quality criteria for COLD 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 are 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: | 67089 | ||||
Pollutant: | Heptachlor | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold 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 Ag Waiver data for Merced River, Lower (McSwain Reservoir to San Joaquin River) to determine beneficial use support and results are as follows: 0 of 0 samples exceed the criterion for Heptachlor. Nine samples were not used in the assessment because the laboratory data reporting limit(s) was above the objective and therefore the results could not be quantified with the level of certainty required by the Listing Policy. | ||||
Data Reference: | Data for Various Pollutants in East San Joaquin, 2004-2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Heptachlor criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is 0.0038 ug/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 Merced River, Lower (McSwain Reservoir to San Joaquin River) was collected at 1 monitoring site [Merced River @ Santa Fe - 535XMRSFD] | ||||
Temporal Representation: | Data was collected over the time period 10/21/2008-7/20/2010. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0 was followed. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0. | ||||
|
|||||
LOE ID: | 67088 | ||||
Pollutant: | Heptachlor | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
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 Ag Waiver data for Merced River, Lower (McSwain Reservoir to San Joaquin River) to determine beneficial use support and results are as follows: 0 of 0 samples exceed the criterion for Heptachlor. Nine samples were not used in the assessment because the laboratory data reporting limit(s) was above the objective and therefore the results could not be quantified with the level of certainty required by the Listing Policy. | ||||
Data Reference: | Data for Various Pollutants in East San Joaquin, 2004-2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The CTR objective for Heptachlor to protect human health from the consumption of water and organisms is 0.00021 ug/L. | ||||
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 Merced River, Lower (McSwain Reservoir to San Joaquin River) was collected at 1 monitoring site [Merced River @ Santa Fe - 535XMRSFD] | ||||
Temporal Representation: | Data was collected over the time period 10/21/2008-7/20/2010. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0 was followed. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0. | ||||
DECISION ID |
72779 |
Region 5 |
Merced River, Lower (McSwain Reservoir to San Joaquin River) |
||
Pollutant: | Heptachlor epoxide |
Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | Do Not List on 303(d) list (TMDL required list)(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 water quality criteria for MUN, and zero of the zero samples exceed the water quality criteria for COLD. 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 water quality criteria for MUN, and zero of the zero samples exceed the water quality criteria for COLD 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 are 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: | 67102 | ||||
Pollutant: | Heptachlor epoxide | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold 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 Ag Waiver data for Merced River, Lower (McSwain Reservoir to San Joaquin River) to determine beneficial use support and results are as follows: 0 of 0 samples exceed the criterion for Heptachlor epoxide. Nine samples were not used in the assessment because the laboratory data reporting limit(s) was above the objective and therefore the results could not be quantified with the level of certainty required by the Listing Policy. | ||||
Data Reference: | Data for Various Pollutants in East San Joaquin, 2004-2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Heptachlor Epoxide criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is 0.0038 ug/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 Merced River, Lower (McSwain Reservoir to San Joaquin River) was collected at 1 monitoring site [Merced River @ Santa Fe - 535XMRSFD] | ||||
Temporal Representation: | Data was collected over the time period 10/21/2008-7/20/2010. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0 was followed. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0. | ||||
|
|||||
LOE ID: | 67090 | ||||
Pollutant: | Heptachlor epoxide | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
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 Ag Waiver data for Merced River, Lower (McSwain Reservoir to San Joaquin River) to determine beneficial use support and results are as follows: 0 of 0 samples exceed the criterion for Heptachlor epoxide. Nine samples were not used in the assessment because the laboratory data reporting limit(s) was above the objective and therefore the results could not be quantified with the level of certainty required by the Listing Policy. | ||||
Data Reference: | Data for Various Pollutants in East San Joaquin, 2004-2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The CTR objective for Heptachlor epoxide to protect human health from the consumption of water and organisms is 0.0001 ug/L. | ||||
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 Merced River, Lower (McSwain Reservoir to San Joaquin River) was collected at 1 monitoring site [Merced River @ Santa Fe - 535XMRSFD] | ||||
Temporal Representation: | Data was collected over the time period 10/21/2008-7/20/2010. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0 was followed. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0. | ||||
DECISION ID |
95560 |
Region 5 |
Merced River, Lower (McSwain Reservoir to San Joaquin River) |
||
Pollutant: | Indicator Bacteria |
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, one line of evidence is necessary to assess listing status.
The prior decision (in the 2012 Integrated Report), "List on 303(d) list (TMDL required list)" was for Escherichia coli (E. coli). During the 2014 Integrated Report cycle, the pollutant name was changed to "Indicator Bacteria." While the 2014 decision would have been to "Delist from 303(d) list (TMDL required list)" for Escherichia coli (E. coli) before the pollutant name change, the Integrated Report data system (CalWQA) recognizes the change in pollutant name as a new listing decision. CalWQA does not allow for a new listing to be delisted in the same cycle, so the decision for Indicator Bacteria is "Do Not List on 303(d) list (TMDL required list)" in this fact sheet. However, this listing decision appears as ¿Delist from 303(d) list (TMDL required list)¿ in Appendix A of the Integrated Report, ¿Proposed Changes to the 2012 Central Valley 303(d) List. Two lines of evidence are available in the administrative record to assess this pollutant. None of seven water sample results 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. None of seven water sample results exceed 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 are 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: | 67077 | ||||
Pollutant: | Escherichia coli (E. coli) | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Water Contact Recreation | ||||
Number of Samples: | 28 | ||||
Number of Exceedances: | 2 | ||||
Data and Information Type: | PATHOGEN MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed Ag Waiver data for Merced River, Lower (McSwain Reservoir to San Joaquin River) to determine beneficial use support and results are as follows: 2 of 28 samples exceed the criterion for Escherichia coli. | ||||
Data Reference: | Data for Various Pollutants in East San Joaquin, 2004-2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Waters shall not contain chemical constituents in concentrations that adversely affect beneficial uses. (Water Quality Control Plan, Central Valley Region, Sacramento River and San Joaquin River Basins) | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Tulare Lake Basin Second Edition. rev. Jan 2004 | ||||
Evaluation Guideline: | The USEPA recommended objective for single sample maximum allowable density of E. coli in freshwater designated beach areas is 235 MPN/100mL. | ||||
Guideline Reference: | Ambient Water Quality Criteria for Bacteria - 1986. EPA440/5-84-002 | ||||
Spatial Representation: | Data for this line of evidence for Merced River, Lower (McSwain Reservoir to San Joaquin River) was collected at 1 monitoring site [Merced River @ Santa Fe - 535XMRSFD] | ||||
Temporal Representation: | Data was collected over the time period 4/22/2008-7/20/2010. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0 was followed. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0. | ||||
|
|||||
LOE ID: | 67071 | ||||
Pollutant: | Escherichia coli (E. coli) | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Water Contact Recreation | ||||
Number of Samples: | 6 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PATHOGEN MONITORING | ||||
Data Used to Assess Water Quality: | SWAMP data indicates that 0 of 6 sample results exceed the evaluation guideline value for Escherichia coli. | ||||
Data Reference: | RWB5 Safe to Swim FY0708 FY0809 | ||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | Waters shall not contain chemical constituents in concentrations that adversely affect beneficial uses. (Water Quality Control Plan, Central Valley Region, Sacramento River and San Joaquin River Basins) | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | The U.S. EPA recommended objective for a single-sample maximum allowable density of E. coli in freshwater designated-beach areas is 235 MPN/100mL. | ||||
Guideline Reference: | 40 CFR Part 131 Water Quality Standards for Coastal and Great Lakes Recreation Waters; Final Rule [Federal Register / Vol. 69, No. 220] | ||||
Spatial Representation: | Data for this line of evidence was collected at two monitoring sites [ Merced River at Henderson Park - 535MER210, Merced River @ Merced Falls Gauging St. - 535MER209] | ||||
Temporal Representation: | Data was collected over the time period 8/27/2008-9/3/2008. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The SWAMP QAPP (2008) was followed. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
|
|||||
LOE ID: | 67070 | ||||
Pollutant: | Escherichia coli (E. coli) | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Water Contact Recreation | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PATHOGEN MONITORING | ||||
Data Used to Assess Water Quality: | SWAMP data indicates that 0 of the sample results exceed the evaluation guideline value for Escherichia coli. | ||||
Data Reference: | RWB5S SJR Trends FY0708 FY0809 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Waters shall not contain chemical constituents in concentrations that adversely affect beneficial uses. (Water Quality Control Plan, Central Valley Region, Sacramento River and San Joaquin River Basins) | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | The U.S. EPA recommended objective for a single-sample maximum allowable density of E. coli in freshwater designated-beach areas is 235 MPN/100mL. | ||||
Guideline Reference: | 40 CFR Part 131 Water Quality Standards for Coastal and Great Lakes Recreation Waters; Final Rule [Federal Register / Vol. 69, No. 220] | ||||
Spatial Representation: | Data for this line of evidence was collected at one monitoring site [ Merced River @ River Road - 535MER546] | ||||
Temporal Representation: | Data was collected on 5/15/2008. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The SWAMP QAPP (2008) was followed. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
|
|||||
LOE ID: | 22231 | ||||
Pollutant: | Escherichia coli (E. coli) | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Water Contact Recreation | ||||
Number of Samples: | 22 | ||||
Number of Exceedances: | 6 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | The Central Valley Regional Water Quality Control Board Surface Water Ambient Monitoring Program collected 72 samples from January 2003 to January 2004. Six out of 22 samples exceeded the evaluation objective. | ||||
Data Reference: | Monitoring Data from the Surface Water Ambient Monitoring Program (SWAMP), San Joaquin River Basin - 2007 Data Review | ||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations that produce detrimental physiological responses in human, plant, animal, or aquatic life. The objective applies regardless of whether the toxicity is caused by a single substance or the interactive effect of multiple substances. | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Objective/Criterion Reference: | Ambient Water Quality Criteria for Bacteria - 1986. EPA440/5-84-002 | ||||
Evaluation Guideline: | The USEPA E. Coli objective of 235/100 mL in any single sample (USEPA 1986). | ||||
Guideline Reference: | Ambient Water Quality Criteria for Bacteria - 1986. EPA440/5-84-002 | ||||
Spatial Representation: | Samples were collected at four locations: Merced River at Highway 49, Merced River at Merced Falls, Merced River at Highway 99, and Merced River at River Road. | ||||
Temporal Representation: | Sampling occurred from January 2003 to March 2004. | ||||
Environmental Conditions: | |||||
QAPP Information: | Data quality: Good. Monitoring was conducted in accordance with the State Water Resources Control Board's Quality Assurance Program Plan for the State of California's Surface Water Ambient Monitoring Program. | ||||
QAPP Information Reference(s): | Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version) | ||||
|
|||||
LOE ID: | 22230 | ||||
Pollutant: | Escherichia coli (E. coli) | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Water Contact Recreation | ||||
Number of Samples: | 12 | ||||
Number of Exceedances: | 1 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | The East San Joaquin Water Quality Coalition collected 12 samples from July 2004 to March 2006. One out of the 12 samples collected exceeded the evaluation objective. | ||||
Data Reference: | Revised Draft of the 2007 Review of the Monitoring Data for the Irrigated Lands Regulatory Conditional Waiver Program | ||||
Monitoring and Reporting Program, Order Nos. R5-2003-0826, R5-2005-0833, and R5-2008-0005 for Coalition Groups Under Resolution No. R5-2003-0105, Conditional Waiver of Waste Discharge Requirements for Discharges From Irrigated Lands Within the Central Valley Region | |||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations that produce detrimental physiological responses in human, plant, animal, or aquatic life. The objective applies regardless of whether the toxicity is caused by a single substance or the interactive effect of multiple substances. | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Objective/Criterion Reference: | Ambient Water Quality Criteria for Bacteria - 1986. EPA440/5-84-002 | ||||
Evaluation Guideline: | The USEPA E. Coli objective of 235/100 mL in any single sample (USEPA 1986). | ||||
Guideline Reference: | Ambient Water Quality Criteria for Bacteria - 1986. EPA440/5-84-002 | ||||
Spatial Representation: | Samples were collected at Merced River at Sante Fe. | ||||
Temporal Representation: | Sampling occurred July 2004 to March 2006. | ||||
Environmental Conditions: | |||||
QAPP Information: | Data quality: Good. Monitoring was conducted in accordance with Central Valley Water Board Monitoring and Reporting Program (order number R5-2003-0826) requirements (CVRWQCB, 2003) | ||||
QAPP Information Reference(s): | |||||
DECISION ID |
73161 |
Region 5 |
Merced River, Lower (McSwain Reservoir to San Joaquin River) |
||
Pollutant: | Invasive Species |
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: | Pollution |
Regional Board Conclusion: | This pollutant is being considered for placement on the section 303(d) list under section 3.10 of the Listing Policy. Under section 3.10 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. Three studies, two in 1969-1971 and one in 1986 were used for this assessment, which showed an overall increase of native and non-native species over time. 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. Three studies were conducted, two in 1969-1971 and one in 1986. 2. Baseline data was taken from the 1969-1971 studies. All three studies sampled the same geographic area, with similar sampling sizes. 3. Rank abundance, Pearson product moment correlations, and principal components analysis were the statistical analyses employed during these studies. 4. The comparison showed a net increase of native and non-native species observed at all sampling sites. The data was based on the percentage of sites the species were collected at for each study. 5. Some native species were collected at more sites in 1986 than in 1969-71. Some non-native species were collected at more sites than in 1969-71. Eight native species increased in the watersheds they were observed from 1969-71 to 1986, while 5 native species decreased. Nine non-native species increased over time from 1969-71 to 1986, while 7 non-native species decreased. 6. It cannot be determined if the trend in water quality is expected to meet water standards by the next listing cycle. 7. 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: | 2754 | ||||
Pollutant: | Invasive Species | ||||
LOE Subgroup: | Population/Community Degradation | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 0 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | Fish surveys | ||||
Data Used to Assess Water Quality: | Two previous studies (conducted in 1969-71) (Moyle and Nichols, 1973; Moyle and Nichols, 1974) were used as baseline comparisons to a study conducted in 1986 (Brown and Moyle, 1993). Species percent collection data were the same for each baseline study at the sampling sites. The baseline studies and this study sampled the same geographic area, with similar sampling sizes. The baseline data was compared to the data collected in 1986. The comparison showed an overall net increase of native species observed at all sampling sites, as well as a net increase in non-native species. The data was based on the percentage of sites the species were collected at for each study. Overall, some native species were collected at more sites in 1986 (an increase in percent) than in the 1969-71 studies (Brown and Moyle, 1993). Some non-native species were collected at more sites (an increase in percent) than in the 1969-71 studies. Eight native species increased in the watersheds they were observed (collected at more sites over time) from 1969-71 to 1986, while 5 native species decreased (collected at less sites over time). Nine non-native species increased over time (collected at more sites over time) from 1969-71 to 1986, while 7 non-native species decreased (collected at less sites over time). | ||||
Data Reference: | Placeholder reference 2006 303(d) | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations that produce detrimental physiological responses in human, plant, animal, or aquatic life. This objective applies regardless of whether the toxicity is caused by a single substance or the interactive effect of multiple substances. Compliance with this objective will be determined by analyses of indicator organisms, species diversity, population density, growth anomalies, and biotoxicity tests of appropriate duration or other methods as specified by the Regional Water Board. Taken from Region 5 Basin Plan, Page III-8.00, Water Quality Objectives. | ||||
Objective/Criterion Reference: | Placeholder reference 2006 303(d) | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Stanislaus, Tuolumne, Merced, Chowchilla, Fresno, San Joaquin, Kings, Kaweah, and Tule Rivers, between 90 and 1100 meters elevation. | ||||
Temporal Representation: | Baseline studies: 37 samples taken during the summer and autumn of 1969, 1970 and 1971 and 130 samples were taken from 7/27-9/4/1970. Another survey was conducted from Sept. 1985 to Sept. 1986 at 186 sites. Only 156 sites were used from this study for statistical analyses, (Brown and Moyle, 1993). | ||||
Environmental Conditions: | Changes in relative diversity and abundance of native species may also be driven by habitat alteration, flow changes, or hydromodification. | ||||
QAPP Information: | Peer Reviewed Journal Articles. | ||||
QAPP Information Reference(s): | |||||
DECISION ID |
73045 |
Region 5 |
Merced River, Lower (McSwain Reservoir to San Joaquin River) |
||
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.
Four lines of evidence are available in the administrative record to assess this pollutant. Zero of the one sediment samples exceed the evaluation guideline for COLD, zero of the twenty-one water samples exceed the water quality objective for COLD, and zero of the fifteen water samples exceed the water quality objective for MUN. 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 the one sediment samples exceed the evaluation guideline for COLD, zero of the twenty-one water samples exceed the water quality objective for COLD, and zero of the fifteen water samples exceed the water quality objective for MUN 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: | 6345 | ||||
Pollutant: | Lead | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 14 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | Not Specified | ||||
Data Used to Assess Water Quality: | Zero of the 14 samples collected by the Surface Water Ambient Monitoring Program exceeded the calculated CTR CMC for dissolved lead | ||||
Data Reference: | San Joaquin River SWAMP Monitoring Data - Drainage Basin Inflows | ||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | Dissolved lead levels should not exceed the calculated CTR value based on the formula: Criteria Maximum Concentration (1-hour Average, dissolved)=(EXP(1.273*LN(hardness)-1.46))*(1.46203-(LN(hardness)*0.145712)) | ||||
Objective/Criterion Reference: | Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Samples were collected from the Merced River at River Road | ||||
Temporal Representation: | The samples were collected between October 26, 2000 and November 20, 2002 | ||||
Environmental Conditions: | |||||
QAPP Information: | Monitoring was conducted in accordance with the State Water Resources Control Board's Quality Assurance Program Plan for the State of California's Surface Water Ambient Monitoring Program. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 67103 | ||||
Pollutant: | Lead | ||||
LOE Subgroup: | Pollutant-Sediment | ||||
Matrix: | Sediment | ||||
Fraction: | Total | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | SWAMP data indicates that 0 of the sample results exceed the evaluation guideline value for Lead. | ||||
Data Reference: | Statewide Stream Pollution Trends Study 2008 | ||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations that produce detrimental physiological responses in human, plant, animal, or aquatic life. (Water Quality Control Plan, Central Valley Region, Sacramento River and San Joaquin River Basins) | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | In freshwater sediments, the probable effect concentration (predictive of sediment toxicity) for lead is 128 mg/Kg dry weight (MacDonald et al. 2000). | ||||
Guideline Reference: | Development and evaluation of consensus-based sediment quality guidelines for freshwater ecosystems. Environmental Contamination and Toxicology. 39: 20-31 | ||||
Spatial Representation: | Data for this line of evidence was collected at one monitoring site [ Merced River @ River Road - 535MER546] | ||||
Temporal Representation: | Data was collected on 7/23/2008. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The SWAMP QAPP (2008) was followed. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
|
|||||
LOE ID: | 20791 | ||||
Pollutant: | Lead | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 15 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Zero of the 15 samples collected by the Surface Water Ambient Monitoring Program exceeded the Primary MCL of 15 ug/L for total lead | ||||
Data Reference: | San Joaquin River SWAMP Monitoring Data - Drainage Basin Inflows | ||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | Total lead levels should not exceed 15 ug/L (Department of Public Health Primary MCL) | ||||
Objective/Criterion Reference: | California Code of Regulations, Title 22, Division 4, Chapter 15. Domestic Water Quality and Monitoring | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Samples were collected from the Merced River at River Road | ||||
Temporal Representation: | The samples were collected between June 24, 1998 and June 30, 2003 | ||||
Environmental Conditions: | |||||
QAPP Information: | Monitoring was conducted in accordance with the State Water Resources Control Board's Quality Assurance Program Plan for the State of California's Surface Water Ambient Monitoring Program. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 67104 | ||||
Pollutant: | Lead | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
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 AgWaiver data for Merced River, Lower (McSwain Reservoir to San Joaquin River) to determine beneficial use support and results are as follows: 0 of 7 samples exceed the criterion for Lead. | ||||
Data Reference: | Data for Various Pollutants in East San Joaquin, 2004-2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The California Toxics Rule (CTR) lists criterion continuous concentrations (4-day average) to protect aquatic life in freshwater. The chromium 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 metals criteria. | ||||
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 Merced River, Lower (McSwain Reservoir to San Joaquin River) was collected at 1 monitoring site [ Merced River @ Santa Fe - 535XMRSFD] | ||||
Temporal Representation: | Data was collected over the time period 10/21/2008-4/21/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0 was followed. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0. | ||||
DECISION ID |
92198 |
Region 5 |
Merced River, Lower (McSwain Reservoir to San Joaquin River) |
||
Pollutant: | Lindane/gamma Hexachlorocyclohexane (gamma-HCH) |
Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | Do Not List on 303(d) list (TMDL required list)(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.
Three lines of evidence are available in the administrative record to assess this pollutant. Zero of the nine water samples exceed the water quality criteria for MUN, zero of the nine water samples exceed the water quality criteria for COLD, and zero of the one sediment samples exceed the evaluation guideline for COLD. 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 nine water samples exceed the water quality criteria for MUN, zero of the nine water samples exceed the water quality criteria for COLD, and zero of the one sediment samples exceed the evaluation guideline for COLD and this does not exceed 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 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: | 67106 | ||||
Pollutant: | Lindane/gamma Hexachlorocyclohexane (gamma-HCH) | ||||
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 Ag Waiver data for Merced River, Lower (McSwain Reservoir to San Joaquin River) to determine beneficial use support and results are as follows: 0 of 9 samples exceed the criterion for HCH, gamma. | ||||
Data Reference: | Data for Various Pollutants in East San Joaquin, 2004-2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The California primary maximum contaminant level for HCH, gamma (Lindane) is 0.2 ug/L. | ||||
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 Merced River, Lower (McSwain Reservoir to San Joaquin River) was collected at 1 monitoring site [Merced River @ Santa Fe - 535XMRSFD] | ||||
Temporal Representation: | Data was collected over the time period 10/21/2008-7/20/2010. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0 was followed. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0. | ||||
|
|||||
LOE ID: | 67105 | ||||
Pollutant: | Lindane/gamma Hexachlorocyclohexane (gamma-HCH) | ||||
LOE Subgroup: | Pollutant-Sediment | ||||
Matrix: | Sediment | ||||
Fraction: | Total | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | One sediment sample was collected and analyzed for the SWAMP. | ||||
Data Reference: | Statewide Stream Pollution Trends Study 2008 | ||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. Discharges shall not result in pesticide concentrations in bottom sediments or aquatic life that adversely affect beneficial uses. (Water Quality Control Plan, Central Valley Region, Sacramento River and San Joaquin River Basins) | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | In freshwater sediments, the probable effect concentration (predictive of sediment toxicity) for Lindane (gamma-HCH) is 4.99 ug/Kg dry weight (MacDonald et al. 2000). | ||||
Guideline Reference: | Development and evaluation of consensus-based sediment quality guidelines for freshwater ecosystems. Environmental Contamination and Toxicology. 39: 20-31 | ||||
Spatial Representation: | Data for this line of evidence was collected at one monitoring site [ Merced River @ River Road - 535MER546] | ||||
Temporal Representation: | Data was collected on 7/23/2008. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The SWAMP QAPP (2008) was followed. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
|
|||||
LOE ID: | 67107 | ||||
Pollutant: | Lindane/gamma Hexachlorocyclohexane (gamma-HCH) | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold 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 Ag Waiver data for Merced River, Lower (McSwain Reservoir to San Joaquin River) to determine beneficial use support and results are as follows: 0 of 9 samples exceed the criterion for HCH, gamma. | ||||
Data Reference: | Data for Various Pollutants in East San Joaquin, 2004-2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The gamma-HCH (Lindane) criterion maximum concentration to protect aquatic life in freshwater is 0.95 ug/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 Merced River, Lower (McSwain Reservoir to San Joaquin River) was collected at 1 monitoring site [Merced River @ Santa Fe - 535XMRSFD] | ||||
Temporal Representation: | Data was collected over the time period 10/21/2008-7/20/2010. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0 was followed. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0. | ||||
DECISION ID |
92200 |
Region 5 |
Merced River, Lower (McSwain Reservoir to San Joaquin River) |
||
Pollutant: | Linuron |
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 sixteen samples 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 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 sixteen samples exceed the evaluation guideline and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
Regional Board Decision Recommendation: | 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: | 67118 | ||||
Pollutant: | Linuron | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 16 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed Ag Waiver data for Merced River, Lower (McSwain Reservoir to San Joaquin River) to determine beneficial use support and results are as follows: 0 of 16 samples exceed the criterion for Linuron. | ||||
Data Reference: | Data for Various Pollutants in East San Joaquin, 2004-2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. (Water Quality Control Plan, Central Valley Region, Sacramento River Basin and San Joaquin River Basin) | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | The Basin Plan states: "Where valid testing has developed 96-hour LC50 values for aquatic organisms..., the Board will consider one tenth of this value for the most sensitive species tested as the upper limit (daily maximum) for the protection of aquatic life... or [O]ther available information on the pesticide..." The evaluation guideline for Linuro, 13.7 ug/L, is the EC50 for Navicula pelliculosa (freshwater diatom). (USEPA Office of Pesticide Programs Ecotoxicity database) | ||||
Guideline Reference: | OPP Pesticide Ecotoxicity Database. | ||||
Spatial Representation: | Data for this line of evidence for Merced River, Lower (McSwain Reservoir to San Joaquin River) was collected at 1 monitoring site [Merced River @ Santa Fe - 535XMRSFD] | ||||
Temporal Representation: | Data was collected over the time period 2/12/2007-9/23/2008. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0 was followed. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0. | ||||
DECISION ID |
86046 |
Region 5 |
Merced River, Lower (McSwain Reservoir to San Joaquin River) |
||
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 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 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 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 the zero samples exceed 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 are 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: | 67119 | ||||
Pollutant: | Malathion | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold 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 Ag Waiver data for Merced River, Lower (McSwain Reservoir to San Joaquin River) to determine beneficial use support and results are as follows: 0 of 0 samples exceed the criterion for Malathion. Twenty-four samples were not used in the assessment because the laboratory data reporting limit(s) was above the objective and therefore the results could not be quantified with the level of certainty required by the Listing Policy. | ||||
Data Reference: | Data for Various Pollutants in East San Joaquin, 2004-2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. (Water Quality Control Plan, Central Valley Region, Sacramento River Basin and San Joaquin River Basin) | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | The Basin Plan states: "Where valid testing has developed 96-hour LC50 values for aquatic organisms..., the Board will consider one tenth of this value for the most sensitive species tested as the upper limit (daily maximum) for the protection of aquatic life... or [O]ther available information on the pesticide..." Aquatic life should not be affected unacceptably if the 4-day average concentration of Malathion, 0.028 ug/L, is not exceeded more than once every three years on the average (UC Davis Aquatic Life Criterion). | ||||
Guideline Reference: | OPP Pesticide Ecotoxicity Database. | ||||
Spatial Representation: | Data for this line of evidence for Merced River, Lower (McSwain Reservoir to San Joaquin River) was collected at 1 monitoring site [Merced River @ Santa Fe - 535XMRSFD] | ||||
Temporal Representation: | Data was collected over the time period 2/12/2007-5/19/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0 was followed. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0. | ||||
DECISION ID |
91638 |
Region 5 |
Merced River, Lower (McSwain Reservoir to San Joaquin River) |
||
Pollutant: | Methidathion |
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 twenty-four samples 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 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 exceed the evaluation guideline and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
Regional Board Decision Recommendation: | 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: | 67121 | ||||
Pollutant: | Methidathion | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 24 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed Ag Waiver data for Merced River, Lower (McSwain Reservoir to San Joaquin River) to determine beneficial use support and results are as follows: 0 of 24 samples exceed the criterion for Methidathion. | ||||
Data Reference: | Data for Various Pollutants in East San Joaquin, 2004-2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. (Water Quality Control Plan, Central Valley Region, Sacramento River Basin and San Joaquin River Basin) | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | The Basin Plan states: "Where valid testing has developed 96-hour LC50 values for aquatic organisms..., the Board will consider one tenth of this value for the most sensitive species tested as the upper limit (daily maximum) for the protection of aquatic life... or [O]ther available information on the pesticide..." The evaluation guideline for Methidathion, 0.86 ug/L, is the maximum acceptable toxicicant concentration (MATC) for Daphina magna (Water flea); USEPA Office of Pesticide Programs Ecotoxicity database. | ||||
Guideline Reference: | OPP Pesticide Ecotoxicity Database. | ||||
Spatial Representation: | Data for this line of evidence for Merced River, Lower (McSwain Reservoir to San Joaquin River) was collected at 1 monitoring site [Merced River @ Santa Fe - 535XMRSFD] | ||||
Temporal Representation: | Data was collected over the time period 2/12/2007-5/19/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0 was followed. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0. | ||||
DECISION ID |
91640 |
Region 5 |
Merced River, Lower (McSwain Reservoir to San Joaquin River) |
||
Pollutant: | Methiocarb |
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 sixteen samples 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 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 sixteen samples exceed the evaluation guideline and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
Regional Board Decision Recommendation: | 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: | 67129 | ||||
Pollutant: | Methiocarb | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 16 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed Ag Waiver data for Merced River, Lower (McSwain Reservoir to San Joaquin River) to determine beneficial use support and results are as follows: 0 of 16 samples exceed the criterion for Methiocarb. | ||||
Data Reference: | Data for Various Pollutants in East San Joaquin, 2004-2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. (Water Quality Control Plan, Central Valley Region, Sacramento River Basin and San Joaquin River Basin) | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | The Basin Plan states: "Where valid testing has developed 96-hour LC50 values for aquatic organisms..., the Board will consider one tenth of this value for the most sensitive species tested as the upper limit (daily maximum) for the protection of aquatic life... or [O]ther available information on the pesticide..." The evaluation guideline for methiocarb, 43.6 ug/L, is one-tenth of the median lethal concentration (LC50 = 436 ug/L) for Oncorhyncus mykiss (Rainbow trout); USEPA Office of Pesticide Programs Ecotoxicity database. | ||||
Guideline Reference: | OPP Pesticide Ecotoxicity Database. | ||||
Spatial Representation: | Data for this line of evidence for Merced River, Lower (McSwain Reservoir to San Joaquin River) was collected at 1 monitoring site [Merced River @ Santa Fe - 535XMRSFD] | ||||
Temporal Representation: | Data was collected over the time period 2/12/2007-9/23/2008. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0 was followed. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0. | ||||
DECISION ID |
86216 |
Region 5 |
Merced River, Lower (McSwain Reservoir to San Joaquin River) |
||
Pollutant: | Methomyl |
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 sixteen samples 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 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 the sixteen samples exceed the evaluation guideline and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
Regional Board Decision Recommendation: | 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: | 67130 | ||||
Pollutant: | Methomyl | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 16 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed Ag Waiver data for Merced River, Lower (McSwain Reservoir to San Joaquin River) to determine beneficial use support and results are as follows: 0 of 16 samples exceed the criterion for Methomyl. | ||||
Data Reference: | Data for Various Pollutants in East San Joaquin, 2004-2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. (Water Quality Control Plan, Central Valley Region, Sacramento River Basin and San Joaquin River Basin) | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | The Basin Plan states: "Where valid testing has developed 96-hour LC50 values for aquatic organisms..., the Board will consider one tenth of this value for the most sensitive species tested as the upper limit (daily maximum) for the protection of aquatic life... or [O]ther available information on the pesticide..." The criteria continuous concentration for Methomyl in the San Joaquin River system is 0.5 ug/L (4-day average). (CDFG, 1996) | ||||
Guideline Reference: | OPP Pesticide Ecotoxicity Database. | ||||
Spatial Representation: | Data for this line of evidence for Merced River, Lower (McSwain Reservoir to San Joaquin River) was collected at 1 monitoring site [Merced River @ Santa Fe - 535XMRSFD] | ||||
Temporal Representation: | Data was collected over the time period 2/12/2007-9/23/2008. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0 was followed. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0. | ||||
DECISION ID |
91744 |
Region 5 |
Merced River, Lower (McSwain Reservoir to San Joaquin River) |
||
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 twenty-three samples exceed the water quality criteria for MUN, and zero of the twenty-three samples exceed the water quality objective for COLD. 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-three samples exceed the water quality criteria for MUN, and zero of twenty-three samples exceed the water quality objective for COLD 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: | 67132 | ||||
Pollutant: | Methoxychlor | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 23 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed Ag Waiver data for Merced River, Lower (McSwain Reservoir to San Joaquin River) to determine beneficial use support and results are as follows: 0 of 23 samples exceed the criterion for Methoxychlor. | ||||
Data Reference: | Data for Various Pollutants in East San Joaquin, 2004-2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Total identifiable persistent chlorinated hydrocarbon pesticides shall not be present in the water column at concentrations detectable within the accuracy of analytical methods approved by the Environmental Protection Agency or the Executive Officer (Water Quality Control Plan, Central Valley Region, Sacramento River Basin and San Joaquin River Basin) | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for Merced River, Lower (McSwain Reservoir to San Joaquin River) was collected at 1 monitoring site [Merced River @ Santa Fe - 535XMRSFD] | ||||
Temporal Representation: | Data was collected over the time period 2/12/2007-4/21/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0 was followed. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0. | ||||
|
|||||
LOE ID: | 67131 | ||||
Pollutant: | Methoxychlor | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 23 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed Ag Waiver data for Merced River, Lower (McSwain Reservoir to San Joaquin River) to determine beneficial use support and results are as follows: 0 of 23 samples exceed the criterion for Methoxychlor. | ||||
Data Reference: | Data for Various Pollutants in East San Joaquin, 2004-2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The California primary maximum contaminant level for Methoxychlor, 30 ug/L, is incorporated by reference into the (Water Quality Control Plan, Central Valley Region, Sacramento and San Joaquin Basins). | ||||
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 Merced River, Lower (McSwain Reservoir to San Joaquin River) was collected at 1 monitoring site [Merced River @ Santa Fe - 535XMRSFD] | ||||
Temporal Representation: | Data was collected over the time period 2/12/2007-4/21/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0 was followed. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0. | ||||
DECISION ID |
91745 |
Region 5 |
Merced River, Lower (McSwain Reservoir to San Joaquin River) |
||
Pollutant: | Methyl Parathion |
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 water samples exceed the evaluation guideline for COLD, and zero of the zero sediment samples exceed the evaluation guideline for COLD. 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 evaluation guideline for COLD, and zero of the zero samples exceed the evaluation guideline for COLD 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 are 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: | 67142 | ||||
Pollutant: | Methyl Parathion | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold 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 Ag Waiver data for Merced River, Lower (McSwain Reservoir to San Joaquin River) to determine beneficial use support and results are as follows: 0 of 0 samples exceed the criterion for Parathion, Methyl. Twenty-four samples were not used in the assessment because the laboratory data reporting limit(s) was above the objective and therefore the results could not be quantified with the level of certainty required by the Listing Policy. | ||||
Data Reference: | Data for Various Pollutants in East San Joaquin, 2004-2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. (Water Quality Control Plan, Central Valley Region, Sacramento River Basin and San Joaquin River Basin) | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | The California Department of Fish and Game instantaneous aquatic life criterion for Methyl Parathion is 0.08 ug/L. | ||||
Guideline Reference: | Hazard Assessment of the Insecticide Methyl Parathion to Aquatic Organisms in the Sacramento River System. California Department of Fish and Game. Environmental Services Division. Administrative Report 92-1 | ||||
Spatial Representation: | Data for this line of evidence for Merced River, Lower (McSwain Reservoir to San Joaquin River) was collected at 1 monitoring site [Merced River @ Santa Fe - 535XMRSFD] | ||||
Temporal Representation: | Data was collected over the time period 2/12/2007-5/19/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0 was followed. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0. | ||||
|
|||||
LOE ID: | 67143 | ||||
Pollutant: | Methyl Parathion | ||||
LOE Subgroup: | Pollutant-Sediment | ||||
Matrix: | Sediment | ||||
Fraction: | Total | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 0 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | The sample was not assessed because, after the laboratory method detection limit result was organic carbon-normalized, the result was above the evaluation guideline and, therefore the result could not be quantified with the level of certainty required by the Listing Policy. | ||||
Data Reference: | Statewide Stream Pollution Trends Study 2008 | ||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. Discharges shall not result in pesticide concentrations in bottom sediments or aquatic life that adversely affect beneficial uses. (Water Quality Control Plan, Central Valley Region, Sacramento River and San Joaquin River Basins) | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | The evaluation guideline value for methyl parathion, 0.6 ug/g OC, is one-tenth of the median lethal concentration for H. azteca (LC50; 6 ug/g OC). The LC50 is the geometric mean of OC-normalized LC50 values for methyl parathion (Ding et al. 2011). | ||||
Guideline Reference: | Toxicity of Sediment-Associated Pesticides to Chironomus dilutus and Hyalella azteca. Arch. Environ. Contam. Toxicol. 61:83Āæ92. | ||||
Spatial Representation: | Data for this line of evidence was collected at one monitoring site [ Merced River @ River Road - 535MER546] | ||||
Temporal Representation: | Data was collected on 7/23/2008. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The SWAMP QAPP (2008) was followed. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
DECISION ID |
91746 |
Region 5 |
Merced River, Lower (McSwain Reservoir to San Joaquin River) |
||
Pollutant: | Molinate |
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 sixteen samples exceed the water quality criteria for MUN, and zero of the sixteen samples exceed the evaluation guideline for COLD. 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 sixteen samples exceed the water quality criteria for MUN, and zero of sixteen samples exceed the evaluation guideline for COLD 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: | 67144 | ||||
Pollutant: | Molinate | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 16 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed Ag Waiver data for Merced River, Lower (McSwain Reservoir to San Joaquin River) to determine beneficial use support and results are as follows: 0 of 16 samples exceed the criterion for Molinate. | ||||
Data Reference: | Data for Various Pollutants in East San Joaquin, 2004-2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. (Water Quality Control Plan, Central Valley Region, Sacramento River Basin and San Joaquin River Basin) | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | The Basin Plan states: "Where valid testing has developed 96-hour LC50 values for aquatic organisms..., the Board will consider one tenth of this value for the most sensitive species tested as the upper limit (daily maximum) for the protection of aquatic life... or [O]ther available information on the pesticide..." The evaluation guideline for Molinate, 600 ug/L, the maximum acceptable toxicicant concentration (MATC) for Daphnia magna (Water flea). (USEPA Office of Pesticide Programs Ecotoxicity database) | ||||
Guideline Reference: | OPP Pesticide Ecotoxicity Database. | ||||
Spatial Representation: | Data for this line of evidence for Merced River, Lower (McSwain Reservoir to San Joaquin River) was collected at 1 monitoring site [Merced River @ Santa Fe - 535XMRSFD] | ||||
Temporal Representation: | Data was collected over the time period 2/12/2007-9/23/2008. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0 was followed. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0. | ||||
|
|||||
LOE ID: | 67145 | ||||
Pollutant: | Molinate | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 16 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed Ag Waiver data for Merced River, Lower (McSwain Reservoir to San Joaquin River) to determine beneficial use support and results are as follows: 0 of 16 samples exceed the criterion for Molinate. | ||||
Data Reference: | Data for Various Pollutants in East San Joaquin, 2004-2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The California primary maximum contaminant level for Molinate is 20 ug/L . | ||||
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 Merced River, Lower (McSwain Reservoir to San Joaquin River) was collected at 1 monitoring site [Merced River @ Santa Fe - 535XMRSFD] | ||||
Temporal Representation: | Data was collected over the time period 2/12/2007-9/23/2008. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0 was followed. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0. | ||||
DECISION ID |
74480 |
Region 5 |
Merced River, Lower (McSwain Reservoir to San Joaquin River) |
||
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.
Six lines of evidence are available in the administrative record to assess this pollutant. 0 of the 22 water samples exceed the water quality objective for COLD, 0 of the 1 sediment samples exceed the evaluation guideline for COLD, 0 of the 1 sediment samples exceed the evaluation guideline for WARM, and 0 of the 23 water samples exceed the water quality objective for MUN. 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. 0 of the 22 water samples exceed the water quality objective for COLD, 0 of the 1 sediment samples exceed the evaluation guideline for COLD, 0 of the 1 sediment samples exceed the evaluation guideline for WARM, and 0 of the 23 water samples exceed the water quality objective for MUN 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: | 67157 | ||||
Pollutant: | Nickel | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 8 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed AgWaiver data for Merced River, Lower (McSwain Reservoir to San Joaquin River) to determine beneficial use support and results are as follows: 0 of 8 samples exceed the criterion for Nickel. | ||||
Data Reference: | Data for Various Pollutants in East San Joaquin, 2004-2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The California Toxics Rule (CTR) lists criterion continuous concentrations (4-day average) to protect aquatic life in freshwater. The chromium 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 metals criteria. | ||||
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 Merced River, Lower (McSwain Reservoir to San Joaquin River) was collected at 1 monitoring site [ Merced River @ Santa Fe - 535XMRSFD] | ||||
Temporal Representation: | Data was collected over the time period 10/21/2008-5/19/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0 was followed. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0. | ||||
|
|||||
LOE ID: | 67146 | ||||
Pollutant: | Nickel | ||||
LOE Subgroup: | Pollutant-Sediment | ||||
Matrix: | Sediment | ||||
Fraction: | Total | ||||
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: | SWAMP data indicates that 0 of the sample results exceed the evaluation guideline value for Nickel. | ||||
Data Reference: | Statewide Stream Pollution Trends Study 2008 | ||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations that produce detrimental physiological responses in human, plant, animal, or aquatic life. (Water Quality Control Plan, Central Valley Region, Sacramento River and San Joaquin River Basins) | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | In freshwater sediments, the probable effect concentration (predictive of sediment toxicity) for nickel is 48.6 mg/Kg dry weight (MacDonald et al. 2000). | ||||
Guideline Reference: | Development and evaluation of consensus-based sediment quality guidelines for freshwater ecosystems. Environmental Contamination and Toxicology. 39: 20-31 | ||||
Spatial Representation: | Data for this line of evidence was collected at one monitoring site [ Merced River @ River Road - 535MER546] | ||||
Temporal Representation: | Data was collected on 7/23/2008. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The SWAMP QAPP (2008) was followed. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
|
|||||
LOE ID: | 20847 | ||||
Pollutant: | Nickel | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 15 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Zero of the 15 samples collected by the Surface Water Ambient Monitoring Program exceeded the Primary MCL of 100 ug/L for total nickel | ||||
Data Reference: | San Joaquin River SWAMP Monitoring Data - Drainage Basin Inflows | ||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | Total nickel levels should not exceed 100 ug/L (Department of Public Health Primary MCL) | ||||
Objective/Criterion Reference: | California Code of Regulations, Title 22, Division 4, Chapter 15. Domestic Water Quality and Monitoring | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Samples were collected from the Merced River at River Road | ||||
Temporal Representation: | The samples were collected between June 24, 1998 to June 30, 2003 | ||||
Environmental Conditions: | |||||
QAPP Information: | Monitoring was conducted in accordance with the State Water Resources Control Board's Quality Assurance Program Plan for the State of California's Surface Water Ambient Monitoring Program. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 67156 | ||||
Pollutant: | Nickel | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 24 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed Ag Waiver data for Merced River, Lower (McSwain Reservoir to San Joaquin River) to determine beneficial use support and results are as follows: 0 of 24 samples exceed the criterion for Nickel. | ||||
Data Reference: | Data for Various Pollutants in East San Joaquin, 2004-2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The California primary maximum contaminant level for nickel is 0.1 mg/L. | ||||
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 Merced River, Lower (McSwain Reservoir to San Joaquin River) was collected at 1 monitoring site [Merced River @ Santa Fe - 535XMRSFD] | ||||
Temporal Representation: | Data was collected over the time period 2/12/2007-5/19/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0 was followed. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0. | ||||
|
|||||
LOE ID: | 6352 | ||||
Pollutant: | Nickel | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 14 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | Not Specified | ||||
Data Used to Assess Water Quality: | Zero of the 14 samples collected by the Surface Water Ambient Monitoring Program exceeded the calculated CTR CMC for dissolved nickel | ||||
Data Reference: | San Joaquin River SWAMP Monitoring Data - Drainage Basin Inflows | ||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | Dissolved nickel levels should not exceed the calculated CTR limit based on the formula: Criteria Maximum Concentration (1-hour Average, dissolved)=(EXP(0.846*LN(hardness)+2.255))*(0.998) | ||||
Objective/Criterion Reference: | Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Samples were collected from the Merced River at River Road | ||||
Temporal Representation: | The samples were collected between October 26, 2000, and November 20, 2002 | ||||
Environmental Conditions: | |||||
QAPP Information: | Monitoring was conducted in accordance with the State Water Resources Control Board's Quality Assurance Program Plan for the State of California's Surface Water Ambient Monitoring Program. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 67155 | ||||
Pollutant: | Nickel | ||||
LOE Subgroup: | Pollutant-Sediment | ||||
Matrix: | Sediment | ||||
Fraction: | Total | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | SWAMP data indicates that 0 of the sample results exceed the evaluation guideline value for Nickel. | ||||
Data Reference: | Statewide Stream Pollution Trends Study 2008 | ||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations that produce detrimental physiological responses in human, plant, animal, or aquatic life. (Water Quality Control Plan, Central Valley Region, Sacramento River and San Joaquin River Basins) | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | In freshwater sediments, the probable effect concentration (predictive of sediment toxicity) for nickel is 48.6 mg/Kg dry weight (MacDonald et al. 2000). | ||||
Guideline Reference: | Development and evaluation of consensus-based sediment quality guidelines for freshwater ecosystems. Environmental Contamination and Toxicology. 39: 20-31 | ||||
Spatial Representation: | Data for this line of evidence was collected at one monitoring site [ Merced River @ River Road - 535MER546] | ||||
Temporal Representation: | Data was collected on 7/23/2008. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The SWAMP QAPP (2008) was followed. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
DECISION ID |
73109 |
Region 5 |
Merced River, Lower (McSwain Reservoir to San Joaquin River) |
||
Pollutant: | Nitrate as Nitrate (NO3) |
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. Region 5 data was not included in the 2012 Integrated Report so all decisions are carried over from the 2010 listing cycle.
This pollutant is being considered for listing under sections 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status. Data is available from 2 lines of evidence for this pollutant. Based on the readily available data and information, the weight of evidence indicates that there is not sufficient justification for placing this water segment-pollution combination on the section 303(d) list. The recommendation is based on staff findings that 0 of 15 available concentrations exceeded the USEPA Primary MCL for MUN, and 0 of 15 samples exceeded the evaluation guideline for COLD and this does not exceed the allowable frequency using Table 3.1 of the Listing Policy. The recommendation is based on staff findings that 0 of 15 available concentrations exceeded the USEPA National Ambient Water Quality Objective and this does not exceed the allowable frequency using Table 3.1 of the Listing Policy. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 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: | 20485 | ||||
Pollutant: | Nitrate as Nitrate (NO3) | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 15 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | 0 of the 15 samples collected by the Surface Water Ambient Monitoring Program exceeded the evaluation objective for Nitrate-N. | ||||
Data Reference: | San Joaquin River SWAMP Monitoring Data - Drainage Basin Inflows | ||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations that produce detrimental physiological responses in human, plant, animal, or aquatic life. This objective applies regardless of whether the toxicity is caused by a single substance or the interactive effect of multiple substances. (CRWQCB, 2006) | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | Nitrate-N levels should not exceed 45 mg/L (Department of Public Health Primary MCL) | ||||
Guideline Reference: | California Code of Regulations, Title 22, Division 4, Chapter 15. Domestic Water Quality and Monitoring | ||||
Spatial Representation: | Samples were collected at Merced River at River Road. | ||||
Temporal Representation: | The samples were collected from Jun 29 2000 to Oct 24 2001 | ||||
Environmental Conditions: | |||||
QAPP Information: | Monitoring was conducted in accordance with the State Water Resources Control Board's Quality Assurance Program Plan for the State of California's Surface Water Ambient Monitoring Program. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 6353 | ||||
Pollutant: | Nitrate as Nitrate (NO3) | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 15 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | Not Specified | ||||
Data Used to Assess Water Quality: | 0 of the 15 samples collected by the Surface Water Ambient Monitoring Program exceeded the evaluation guideline for Nitrate-N. | ||||
Data Reference: | San Joaquin River SWAMP Monitoring Data - Drainage Basin Inflows | ||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations that produce detrimental physiological responses in human, plant, animal, or aquatic life. This objective applies regardless of whether the toxicity is caused by a single substance or the interactive effect of multiple substances. (CRWQCB, 2006) | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | Nitrate-N levels should not to exceed 100 mg/L (USEPA National Ambient Water Quality Objective) | ||||
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 at Merced River at River Road. | ||||
Temporal Representation: | The samples were collected from Jun 29 2000 to Oct 24 2001 | ||||
Environmental Conditions: | |||||
QAPP Information: | Monitoring was conducted in accordance with the State Water Resources Control Board's Quality Assurance Program Plan for the State of California's Surface Water Ambient Monitoring Program. | ||||
QAPP Information Reference(s): | |||||
DECISION ID |
86217 |
Region 5 |
Merced River, Lower (McSwain Reservoir to San Joaquin River) |
||
Pollutant: | Nitrate/Nitrite (Nitrite + Nitrate as N) |
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. 0 of the 22 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 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. 0 of the 22 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 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: | 67158 | ||||
Pollutant: | Nitrate/Nitrite (Nitrite + Nitrate as N) | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 22 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed Ag Waiver data for Merced River, Lower (McSwain Reservoir to San Joaquin River) to determine beneficial use support and results are as follows: 0 of 22 samples exceed the criterion for Nitrate/Nitrite as N. | ||||
Data Reference: | Data for Various Pollutants in East San Joaquin, 2004-2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The California primary maximum contaminant level for nitrate + nitrite (as N) is 10.0 mg/L. | ||||
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 Merced River, Lower (McSwain Reservoir to San Joaquin River) was collected at 1 monitoring site [Merced River @ Santa Fe - 535XMRSFD] | ||||
Temporal Representation: | Data was collected over the time period 10/21/2008-7/20/2010. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0 was followed. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0. | ||||
DECISION ID |
86218 |
Region 5 |
Merced River, Lower (McSwain Reservoir to San Joaquin River) |
||
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.
One line of evidence is available in the administrative record to assess this pollutant. Zero of the sixteen 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 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 the sixteen 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 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: | 67159 | ||||
Pollutant: | Nitrogen, Nitrate | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 16 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed Ag Waiver data for Merced River, Lower (McSwain Reservoir to San Joaquin River) to determine beneficial use support and results are as follows: 0 of 16 samples exceed the criterion for Nitrate as N. | ||||
Data Reference: | Data for Various Pollutants in East San Joaquin, 2004-2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The California primary maximum contaminant level for nitrate (NO3 as N) is 10.0 mg/L. | ||||
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 Merced River, Lower (McSwain Reservoir to San Joaquin River) was collected at 1 monitoring site [Merced River @ Santa Fe - 535XMRSFD] | ||||
Temporal Representation: | Data was collected over the time period 2/12/2007-9/23/2008. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0 was followed. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0. | ||||
DECISION ID |
91747 |
Region 5 |
Merced River, Lower (McSwain Reservoir to San Joaquin River) |
||
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.
One line of evidence is available in the administrative record to assess this pollutant. Zero of the sixteen samples exceed the water quality 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 sixteen samples exceed the water quality 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: | 67160 | ||||
Pollutant: | Nitrogen, Nitrite | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 16 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed Ag Waiver data for Merced River, Lower (McSwain Reservoir to San Joaquin River) to determine beneficial use support and results are as follows: 0 of 16 samples exceed the criterion for Nitrite as N. | ||||
Data Reference: | Data for Various Pollutants in East San Joaquin, 2004-2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The California primary maximum contaminant level for nitrite (as N) is 1 mg/L. | ||||
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 Merced River, Lower (McSwain Reservoir to San Joaquin River) was collected at 1 monitoring site [Merced River @ Santa Fe - 535XMRSFD] | ||||
Temporal Representation: | Data was collected over the time period 2/12/2007-9/23/2008. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0 was followed. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0. | ||||
DECISION ID |
99804 |
Region 5 |
Merced River, Lower (McSwain Reservoir to San Joaquin River) |
||
Pollutant: | Oxamyl (Vydate) |
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 sixteen 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 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 sixteen 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 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: | 79626 | ||||
Pollutant: | Oxamyl (Vydate) | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 16 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | State Water Board staff assessed ILRP data for Merced River, Lower (McSwain Reservoir to San Joaquin River) to determine beneficial use support and results are as follows: 0 of 16 samples exceed the criterion for Oxamyl. | ||||
Data Reference: | Data for Various Pollutants in East San Joaquin, 2004-2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The California Maximum Contaminant Level for Oxamyl incorporated by reference in the Water Quality Control Plan, Central Valley Region, Sacramento and San Joaquin Basins is 50 ug/L (Water Quality Control Plan, Central Valley Region, Sacramento and San Joaquin Basins). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for Merced River, Lower (McSwain Reservoir to San Joaquin River) was collected at 1 monitoring site [ Merced River @ Santa Fe - 535XMRSFD] | ||||
Temporal Representation: | Data was collected over the time period 2/12/2007-9/23/2008. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0 was followed. | ||||
QAPP Information Reference(s): | |||||
DECISION ID |
74895 |
Region 5 |
Merced River, Lower (McSwain Reservoir to San Joaquin River) |
||
Pollutant: | Oxygen, Dissolved |
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.
Nine lines of evidence are available in the administrative record to assess this pollutant. Four of the sixty-five samples exceed the water quality objective for COLD, and three of the forty-three samples exceed the water quality objective for SPWN . 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. Four of the sixty-five samples exceed the water quality objective for COLD, and three of the forty-three samples exceed the water quality objective for SPWN and this does not exceed 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 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: | 67173 | ||||
Pollutant: | Oxygen, Dissolved | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 41 | ||||
Number of Exceedances: | 3 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed Ag Waiver data to determine beneficial use support: Three of 41 sample results exceed the criterion for Oxygen, Dissolved. | ||||
Data Reference: | Data for Various Pollutants in East San Joaquin, 2004-2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The minimum dissolved oxygen concentration for waters designated as COLD is 7.0 mg/L. (Water Quality Control Plan, Central Valley Region, Sacramento River Basin and San Joaquin River Basin) | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence was collected at one monitoring site [Merced River @ Santa Fe-535XMRSFD]. | ||||
Temporal Representation: | Data was collected monthly between 2/12/2007 and 7/20/2010. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0 was followed. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0. | ||||
|
|||||
LOE ID: | 67172 | ||||
Pollutant: | Oxygen, Dissolved | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | SWAMP data indicates that 0 of the sample results exceed the criterion for Oxygen, Dissolved. | ||||
Data Reference: | RWB5 Safe to Swim FY0708 FY0809 | ||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | The minimum dissolved oxygen concentration for waters designated as COLD is 7.0 mg/L. (Water Quality Control Plan, Central Valley Region, Sacramento River Basin and San Joaquin River Basin) | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence was collected at one monitoring site [ Merced River @ Merced Falls Gauging St. - 535MER209] | ||||
Temporal Representation: | Data was collected on 8/31/2008. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The SWAMP QAMP (2002) was used for data before Septemper 1, 2008 and SWAMP QAPP (2008) was thereafter. | ||||
QAPP Information Reference(s): | Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version) | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
|
|||||
LOE ID: | 67175 | ||||
Pollutant: | Oxygen, Dissolved | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | 0 of 1 samples exceed the water quality objective. | ||||
Data Reference: | RWB5 Safe to Swim FY0708 FY0809 | ||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | Water Quality Control Plan, Central Valley Region (CVRWQCB 2007): The dissolved oxygen concentrations shall not be reduced below the following minimum level at any time: Waters designated COLD 7.0 mg/l | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Samples were collected from the 535MER209 (Merced River @ Merced Falls Gauging St.). | ||||
Temporal Representation: | Samples were collected on 8/31/2008. | ||||
Environmental Conditions: | |||||
QAPP Information: | SWAMP QAPP (2008) was followed. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
|
|||||
LOE ID: | 59515 | ||||
Pollutant: | Oxygen, Dissolved | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | The sample collected did not exceed the objective. | ||||
Data Reference: | RWB5S SJR Trends FY0708 FY0809 | ||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | Table III-2 of the Sacramento/San Joaquin Basin plans delineates temporal and spatial specific objectives. For the Merced River from Cressy to New Exequer Dam, the minimum dissolved oxygen concentration is 8.0 mg/L. | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | The sample was collected from the Merced River @ River Road station (535MER546). | ||||
Temporal Representation: | The sample was collected on 5/15/2008. | ||||
Environmental Conditions: | |||||
QAPP Information: | SWAMP QAPP | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
|
|||||
LOE ID: | 67174 | ||||
Pollutant: | Oxygen, Dissolved | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Fish Spawning | ||||
Number of Samples: | 41 | ||||
Number of Exceedances: | 3 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed Ag Waiver data to determine beneficial use support: Three of 41 sample results exceed the criterion for Oxygen, Dissolved. | ||||
Data Reference: | Data for Various Pollutants in East San Joaquin, 2004-2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The minimum dissolved oxygen concentration for waters designated as SPWN is 7.0 mg/L. (Water Quality Control Plan, Central Valley Region, Sacramento River Basin and San Joaquin River Basin) | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence was collected at one monitoring site [Merced River @ Santa Fe-535XMRSFD]. | ||||
Temporal Representation: | Data was collected monthly between 2/12/2007 and 7/20/2010. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0 was followed. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0. | ||||
|
|||||
LOE ID: | 67169 | ||||
Pollutant: | Oxygen, Dissolved | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Fish Spawning | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | SWAMP data indicates that 0 of the sample results exceed the criterion for Oxygen, Dissolved. | ||||
Data Reference: | RWB5S SJR Trends FY0708 FY0809 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The minimum dissolved oxygen concentration for waters designated as SPWN is 7.0 mg/L. (Water Quality Control Plan, Central Valley Region, Sacramento River Basin and San Joaquin Basin) | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence was collected at one monitoring site [ Merced River @ River Road - 535MER546] | ||||
Temporal Representation: | Data was collected on 5/15/2008. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The SWAMP QAPP (2008) was followed. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
|
|||||
LOE ID: | 67171 | ||||
Pollutant: | Oxygen, Dissolved | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Fish Spawning | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | SWAMP data indicates that 0 of the sample results exceed the criterion for Oxygen, Dissolved. | ||||
Data Reference: | RWB5 Safe to Swim FY0708 FY0809 | ||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | The minimum dissolved oxygen concentration for waters designated as SPWN is 7.0 mg/L. (Water Quality Control Plan, Central Valley Region, Sacramento River Basin and San Joaquin Basin) | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence was collected at one monitoring site [ Merced River @ Merced Falls Gauging St. - 535MER209] | ||||
Temporal Representation: | Data was collected on 8/31/2008. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The SWAMP QAMP (2002) was used for data before Septemper 1, 2008 and SWAMP QAPP (2008) was thereafter. | ||||
QAPP Information Reference(s): | Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version) | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
|
|||||
LOE ID: | 22229 | ||||
Pollutant: | Oxygen, Dissolved | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Aquatic Life Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 20 | ||||
Number of Exceedances: | 1 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Twenty samples were taken from the Lower Merced River between 2004 and 2006. One of the twenty samples fell below the Water Quality Objective for minimum dissolved oxygen content in surface water. | ||||
Data Reference: | Revised Draft of the 2007 Review of the Monitoring Data for the Irrigated Lands Regulatory Conditional Waiver Program | ||||
Monitoring and Reporting Program, Order Nos. R5-2003-0826, R5-2005-0833, and R5-2008-0005 for Coalition Groups Under Resolution No. R5-2003-0105, Conditional Waiver of Waste Discharge Requirements for Discharges From Irrigated Lands Within the Central Valley Region | |||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | From the Sacramento/San Joaquin River Basin Plan the (COLD) Cold Freshwater Habitat criterion is a Minimum Dissolved Oxygen content of 7mg/L. | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Samples were collected from the Lower Merced River at Santa Fe Avenue in Merced County. | ||||
Temporal Representation: | Samples were collected between July 2004 and September 2006. Samples were collected at bi-monthly and monthly intervals. | ||||
Environmental Conditions: | |||||
QAPP Information: | Data quality: Good. Monitoring was conducted in accordance with Central Valley Water Board Monitoring and Reporting Program (order number R5-2003-0826) requirements (CVRWQCB, 2003) | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 67170 | ||||
Pollutant: | Oxygen, Dissolved | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | SWAMP data indicates that 0 of the sample results exceed the criterion for Oxygen, Dissolved. | ||||
Data Reference: | RWB5S SJR Trends FY0708 FY0809 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The minimum dissolved oxygen concentration for waters designated as COLD is 7.0 mg/L. (Water Quality Control Plan, Central Valley Region, Sacramento River Basin and San Joaquin River Basin) | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence was collected at one monitoring site [ Merced River @ River Road - 535MER546] | ||||
Temporal Representation: | Data was collected on 5/15/2008. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The SWAMP QAPP (2008) was followed. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
DECISION ID |
91902 |
Region 5 |
Merced River, Lower (McSwain Reservoir to San Joaquin River) |
||
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 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 sediment samples 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 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 the one sediment samples exceed 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 are 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: | 67185 | ||||
Pollutant: | PCBs (Polychlorinated biphenyls) | ||||
LOE Subgroup: | Pollutant-Sediment | ||||
Matrix: | Sediment | ||||
Fraction: | Total | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Zero of 1 sample collected for Total PCBs exceeded the evaluation guideline. | ||||
Data Reference: | Statewide Stream Pollution Trends Study 2008 | ||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | Waters shall not contain substances in concentrations that result in the deposition of material that causes nuisance or adversely affects beneficial uses (Water Quality Control Plan for the Sacramento and San Joaquin River Basins). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | In freshwater sediments the probable effect concentration (predictive of sediment toxicity) for total PCB is 676 ug/Kg dry weight (MacDonald et al. 2000). | ||||
Guideline Reference: | Development and evaluation of consensus-based sediment quality guidelines for freshwater ecosystems. Environmental Contamination and Toxicology. 39: 20-31 | ||||
Spatial Representation: | Data were collected at the following station 535MER546 (Merced River @ River Road). | ||||
Temporal Representation: | The samples were collected on 7/23/2008. | ||||
Environmental Conditions: | |||||
QAPP Information: | The SWAMP QAPP (2008) was followed. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
DECISION ID |
86300 |
Region 5 |
Merced River, Lower (McSwain Reservoir to San Joaquin River) |
||
Pollutant: | Paraquat |
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 sixteen samples 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 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 the sixteen samples exceed the evaluation guideline and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
Regional Board Decision Recommendation: | 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: | 67184 | ||||
Pollutant: | Paraquat | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 16 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed Ag Waiver data for Merced River, Lower (McSwain Reservoir to San Joaquin River) to determine beneficial use support and results are as follows: 0 of 16 samples exceed the criterion for Paraquat. | ||||
Data Reference: | Data for Various Pollutants in East San Joaquin, 2004-2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. (Water Quality Control Plan, Central Valley Region, Sacramento River Basin and San Joaquin River Basin) | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | The evaluation guideline for Oryzalin, 1,200 ug/L, is an EC50 for Daphnia sp. (Water flea). (USEPA Office of Pesticide Programs Ecotoxicity database) | ||||
Guideline Reference: | OPP Pesticide Ecotoxicity Database. | ||||
Spatial Representation: | Data for this line of evidence for Merced River, Lower (McSwain Reservoir to San Joaquin River) was collected at 1 monitoring site [Merced River @ Santa Fe - 535XMRSFD] | ||||
Temporal Representation: | Data was collected over the time period 2/12/2007-9/23/2008. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0 was followed. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0. | ||||
DECISION ID |
86623 |
Region 5 |
Merced River, Lower (McSwain Reservoir to San Joaquin River) |
||
Pollutant: | Permethrin, total |
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 3.11 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 water samples exceed the evaluation guideline for COLD, and zero of the zero sediment samples exceed the evaluation guideline for COLD. 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 water samples exceed the evaluation guideline for COLD, and zero of the zero sediment samples exceed the evaluation guideline for COLD 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 are 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: | 67187 | ||||
Pollutant: | Permethrin, total | ||||
LOE Subgroup: | Pollutant-Sediment | ||||
Matrix: | Sediment | ||||
Fraction: | Total | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 0 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | The sample was not assessed because, after the laboratory method detection limit result was organic carbon-normalized, the result was above the evaluation guideline and, therefore the result could not be quantified with the level of certainty required by the Listing Policy. | ||||
Data Reference: | Statewide Stream Pollution Trends Study 2008 | ||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. Discharges shall not result in pesticide concentrations in bottom sediments or aquatic life that adversely affect beneficial uses. (Water Quality Control Plan, Central Valley Region, Sacramento River and San Joaquin River Basins) | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | The evaluation guideline value for permethrin, 0.89 ug/g OC, is one-tenth of the median lethal concentration for H. azteca (LC50; 8.9 ug/g OC). The LC50 is the geometric mean of OC-normalized LC50 values for permethrin (Amweg et al. 2005). | ||||
Guideline Reference: | Use and Toxicity of Pyrethroid Pesticides in the Central Valley, California, USA. Environmental Toxicology and Chemistry, 24:966-972, with erratum 24:No. 5 | ||||
Spatial Representation: | Data for this line of evidence was collected at one monitoring site [ Merced River @ River Road - 535MER546] | ||||
Temporal Representation: | Data was collected on 7/23/2008. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The SWAMP QAPP (2008) was followed. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
|
|||||
LOE ID: | 67186 | ||||
Pollutant: | Permethrin, total | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold 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 Ag Waiver data for Merced River, Lower (McSwain Reservoir to San Joaquin River) to determine beneficial use support and results are as follows: 0 of 0 samples exceed the criterion for Permethrin, Total. Eight samples were not used in the assessment because the laboratory data reporting limit(s) was above the objective and therefore the results could not be quantified with the level of certainty required by the Listing Policy. | ||||
Data Reference: | Data for Various Pollutants in East San Joaquin, 2004-2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. (Water Quality Control Plan, Central Valley Region, Sacramento River Basin and San Joaquin River Basin) | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | The Basin Plan states: "Where valid testing has developed 96-hour LC50 values for aquatic organisms..., the Board will consider one tenth of this value for the most sensitive species tested as the upper limit (daily maximum) for the protection of aquatic life... or [O]ther available information on the pesticide..." Aquatic life should not be affected unacceptably if the 4-day average concentration of Permethrin, 0.0002 ug/L, is not exceeded more than once every three years on the average (UC Davis Aquatic Life Criterion). | ||||
Guideline Reference: | OPP Pesticide Ecotoxicity Database. | ||||
Spatial Representation: | Data for this line of evidence for Merced River, Lower (McSwain Reservoir to San Joaquin River) was collected at 1 monitoring site [Merced River @ Santa Fe - 535XMRSFD] | ||||
Temporal Representation: | Data was collected over the time period 2/12/2007-9/11/2007. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0 was followed. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0. | ||||
DECISION ID |
91903 |
Region 5 |
Merced River, Lower (McSwain Reservoir to San Joaquin River) |
||
Pollutant: | Phorate |
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 twenty-four samples 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 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 exceed the evaluation guideline and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
Regional Board Decision Recommendation: | 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: | 67202 | ||||
Pollutant: | Phorate | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 24 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed Ag Waiver data for Merced River, Lower (McSwain Reservoir to San Joaquin River) to determine beneficial use support and results are as follows: 0 of 24 samples exceed the criterion for Phorate. | ||||
Data Reference: | Data for Various Pollutants in East San Joaquin, 2004-2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. (Water Quality Control Plan, Central Valley Region, Sacramento River Basin and San Joaquin River Basin) | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | The Basin Plan states: "Where valid testing has developed 96-hour LC50 values for aquatic organisms..., the Board will consider one tenth of this value for the most sensitive species tested as the upper limit (daily maximum) for the protection of aquatic life... or [O]ther available information on the pesticide..." The evaluation guideline for phorate, 0.2 ug/L, is one-tenth of the median lethal concentration (LC50 = 2.0 ug/L) for Lepomis macrochirus (Bluegill sunfish). (USEPA Office of Pesticide Programs Ecotoxicity database) | ||||
Guideline Reference: | OPP Pesticide Ecotoxicity Database. | ||||
Spatial Representation: | Data for this line of evidence for Merced River, Lower (McSwain Reservoir to San Joaquin River) was collected at 1 monitoring site [Merced River @ Santa Fe - 535XMRSFD] | ||||
Temporal Representation: | Data was collected over the time period 2/12/2007-5/19/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0 was followed. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0. | ||||
DECISION ID |
91904 |
Region 5 |
Merced River, Lower (McSwain Reservoir to San Joaquin River) |
||
Pollutant: | Phosmet |
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 twenty-four samples 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 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 exceed the evaluation guideline and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
Regional Board Decision Recommendation: | 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: | 67210 | ||||
Pollutant: | Phosmet | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 24 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed Ag Waiver data for Merced River, Lower (McSwain Reservoir to San Joaquin River) to determine beneficial use support and results are as follows: 0 of 24 samples exceed the criterion for Phosmet. | ||||
Data Reference: | Data for Various Pollutants in East San Joaquin, 2004-2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. (Water Quality Control Plan, Central Valley Region, Sacramento River Basin and San Joaquin River Basin) | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | The Basin Plan states: "Where valid testing has developed 96-hour LC50 values for aquatic organisms..., the Board will consider one tenth of this value for the most sensitive species tested as the upper limit (daily maximum) for the protection of aquatic life... or [O]ther available information on the pesticide..." The evaluation guideline for Phosmet, 5.6 ug/L, is the EC50 for Daphnia magna (Water flea). (USEPA Office of Pesticide Programs Ecotoxicity database) | ||||
Guideline Reference: | OPP Pesticide Ecotoxicity Database. | ||||
Spatial Representation: | Data for this line of evidence for Merced River, Lower (McSwain Reservoir to San Joaquin River) was collected at 1 monitoring site [Merced River @ Santa Fe - 535XMRSFD] | ||||
Temporal Representation: | Data was collected over the time period 2/12/2007-5/19/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0 was followed. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0. | ||||
DECISION ID |
71501 |
Region 5 |
Merced River, Lower (McSwain Reservoir to San Joaquin River) |
||
Pollutant: | Selenium |
Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | Do Not List on 303(d) list (TMDL required list)(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.
Four lines of evidence are available in the administrative record to assess this pollutant. 1 of the 89 samples exceed the evaluation guideline for COLD, 0 of the 20 samples exceed the water quality objective for MUN, and 0 of the 69 samples for total Selenium exceed the evaluation guideline for MUN. 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. 1 of the 89 samples exceed the evaluation guideline for COLD, 0 of the 20 samples exceed the water quality objective for MUN, and 0 of the 69 samples for total Selenium exceed the evaluation guideline for MUN 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: | 67212 | ||||
Pollutant: | Selenium | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 20 | ||||
Number of Exceedances: | 1 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed Ag Waiver data for Merced River, Lower (McSwain Reservoir to San Joaquin River) to determine beneficial use support and results are as follows: 0 of 20 samples exceed the criterion for Selenium. | ||||
Data Reference: | Data for Various Pollutants in East San Joaquin, 2004-2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The selenium criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is 0.005 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 Merced River, Lower (McSwain Reservoir to San Joaquin River) was collected at 1 monitoring site [Merced River @ Santa Fe - 535XMRSFD] | ||||
Temporal Representation: | Data was collected over the time period 2/12/2007-5/19/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0 was followed. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0. | ||||
|
|||||
LOE ID: | 6936 | ||||
Pollutant: | Selenium | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 69 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | Not Specified | ||||
Data Used to Assess Water Quality: | 0 of the 69 samples collected by the Surface Water Ambient Monitoring Program exceeded the evaluation objective for Selenium. | ||||
Data Reference: | San Joaquin River SWAMP Monitoring Data - Drainage Basin Inflows | ||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations that produce detrimental physiological responses in human, plant, animal, or aquatic life. This objective applies regardless of whether the toxicity is caused by a single substance or the interactive effect of multiple substances. (CRWQCB, 2006) Selenium levels should not to exceed 5 ug/L (CTR) | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Samples were collected at Merced River at River Road. | ||||
Temporal Representation: | The samples were collected from Jan 28 1998 to Nov 29 2005 | ||||
Environmental Conditions: | |||||
QAPP Information: | Monitoring was conducted in accordance with the State Water Resources Control Board's Quality Assurance Program Plan for the State of California's Surface Water Ambient Monitoring Program. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 21071 | ||||
Pollutant: | Selenium | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 69 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | 0 of the 69 samples collected by the Surface Water Ambient Monitoring Program exceeded the evaluation objective for Selenium. | ||||
Data Reference: | San Joaquin River SWAMP Monitoring Data - Drainage Basin Inflows | ||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations that produce detrimental physiological responses in human, plant, animal, or aquatic life. This objective applies regardless of whether the toxicity is caused by a single substance or the interactive effect of multiple substances. (CRWQCB, 2006) | ||||
Objective/Criterion Reference: | San Joaquin River SWAMP Monitoring Data - Drainage Basin Inflows | ||||
Evaluation Guideline: | Selenium levels should not exceed 50 ug/L (Department of Public Health Primary MCL) | ||||
Guideline Reference: | California Code of Regulations, Title 22, Division 4, Chapter 15. Domestic Water Quality and Monitoring | ||||
Spatial Representation: | Samples were collected at Merced River at River Road. | ||||
Temporal Representation: | The samples were collected from Jan 28 1998 to Nov 29 2005 | ||||
Environmental Conditions: | |||||
QAPP Information: | Monitoring was conducted in accordance with the State Water Resources Control Board's Quality Assurance Program Plan for the State of California's Surface Water Ambient Monitoring Program. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 67211 | ||||
Pollutant: | Selenium | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 20 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed Ag Waiver data for Merced River, Lower (McSwain Reservoir to San Joaquin River) to determine beneficial use support and results are as follows: 0 of 20 samples exceed the criterion for Selenium. | ||||
Data Reference: | Data for Various Pollutants in East San Joaquin, 2004-2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The California primary maximum contaminant level for selenium is 0.05 mg/L. | ||||
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 Merced River, Lower (McSwain Reservoir to San Joaquin River) was collected at 1 monitoring site [Merced River @ Santa Fe - 535XMRSFD] | ||||
Temporal Representation: | Data was collected over the time period 2/12/2007-5/19/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0 was followed. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0. | ||||
DECISION ID |
74320 |
Region 5 |
Merced River, Lower (McSwain Reservoir to San Joaquin River) |
||
Pollutant: | Simazine |
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. Region 5 data was not included in the 2012 Integrated Report so all decisions are carried over from the 2010 listing cycle.
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. Eleven lines of evidence are available in the administrative record to assess this pollutant. Zero of sixteen samples exceed the evaluation guideline for COLD, and 0 of 16 samples California MCL for MUN, and one of 235 samples exceed the secondary MCL for MUN. 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. Zero of sixteen samples exceed the evaluation guideline for COLD, and 0 of 16 samples California MCL for MUN, and one of 235 samples exceed the secondary MCL for MUN 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: | The decision has not changed. Region 5 data was not included in the 2012 Integrated Report so all decisions are carried over from the 2010 listing cycle.
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: | 22198 | ||||
Pollutant: | Simazine | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 10 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | 10 water samples were collected from Merced River in February 2004, representing 10 concentrations.0 of 10 available concentrations exceeded the MCL (4 ug/L). | ||||
Data Reference: | Zipped file of Central Valley Waterways Pesticide TMDL monitoring data spreadsheets and reports | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | At a minimum, water designated for use as domestic or municipal supply (MUN) shall not contain concentrations of chemical constituents in excess of the maximum contaminant levels (MCLs) specified in the following provisions of Title 22 of the California Code of Regulations, which are incorporated by reference into this plan: Tables 64431-A (Inorganic Chemicals) and 64431-B (Fluoride) of Section 64431, Table 64444-A (Organic Chemicals) of Section 64444, and Tables 64449-A (Secondary Maximum Contaminant Levels-Consumer Acceptance Limits) and 64449-B (Secondary Maximum Contaminant Levels-Ranges) of Section 64449.
The Maximum Contaminant Level (MCL) for simazine is 4 ug/L. |
||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | |||||
Guideline Reference: | California Code of Regulations, Title 22, Division 4, Chapter 15. Domestic Water Quality and Monitoring | ||||
Spatial Representation: | Samples were collected from Merced River at River Road. | ||||
Temporal Representation: | Samples were collected daily during two storms in February 2004. | ||||
Environmental Conditions: | |||||
QAPP Information: | Data quality: Good. Calanchini, H. 2006. Quality Assurance Project Plan, Sacramento and San Joaquin River Basins and Sacramento-San Joaquin Delta TMDL Monitoring for Organophosphorus Pesticides and Other Pesticides Identified as Posing a High Risk to Surface Waters. John Muir Institute of the Environment, U.C. Davis. Davis, CA. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan. Sacramento and San Joaquin River Basins and Sacramento-San Joaquin Delta TMDL Monitoring for Organophosphorus Pesticides and Other Pesticides Identified as Posing a High Risk to Surface Waters. Final. SWAMP Project ID 02TM5001 (Revision 0.0). John Muir Institute of the Environment, U.C. Davis. Davis, CA. January 26, 2006 | ||||
|
|||||
LOE ID: | 22213 | ||||
Pollutant: | Simazine | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
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: | 5 water samples were collected from Merced River from July 2004 through September 2006, representing 5 concentrations.0 of 5 concentrations exceeded the MCL (4 ug/L). | ||||
Data Reference: | Revised Draft of the 2007 Review of the Monitoring Data for the Irrigated Lands Regulatory Conditional Waiver Program | ||||
Monitoring and Reporting Program, Order Nos. R5-2003-0826, R5-2005-0833, and R5-2008-0005 for Coalition Groups Under Resolution No. R5-2003-0105, Conditional Waiver of Waste Discharge Requirements for Discharges From Irrigated Lands Within the Central Valley Region | |||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | At a minimum, water designated for use as domestic or municipal supply (MUN) shall not contain concentrations of chemical constituents in excess of the maximum contaminant levels (MCLs) specified in the following provisions of Title 22 of the California Code of Regulations, which are incorporated by reference into this plan: Tables 64431-A (Inorganic Chemicals) and 64431-B (Fluoride) of Section 64431, Table 64444-A (Organic Chemicals) of Section 64444, and Tables 64449-A (Secondary Maximum Contaminant Levels-Consumer Acceptance Limits) and 64449-B (Secondary Maximum Contaminant Levels-Ranges) of Section 64449.
The Maximum Contaminant Level (MCL) for simazine is 4 ug/L. |
||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Objective/Criterion Reference: | California Code of Regulations, Title 22, Division 4, Chapter 15. Domestic Water Quality and Monitoring | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Samples were collected from Merced River at Santa Fe. | ||||
Temporal Representation: | Samples were collected weekly from July 2004 through September 2006. | ||||
Environmental Conditions: | |||||
QAPP Information: | Data quality: Good. Monitoring was conducted in accordance with Central Valley Water Board Monitoring and Reporting Program (order number R5-2003-0826) requirements (CVRWQCB, 2003) | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 22214 | ||||
Pollutant: | Simazine | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 140 | ||||
Number of Exceedances: | 1 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | 140 water samples were collected from Merced River from January 2000 through June 2005, representing 140 concentrations.1 of 140 concentrations exceeded the MCLs for drinking water standard (4 ug/L) | ||||
Data Reference: | Surface Water database (SWDB) for Central Valley waterbodies, 2000-2005 | ||||
Correspondence between the Department of Pesticide Regulation and Central Valley Regional Water Quality Control Board regarding water quality data for waterbodies in the Central Valley | |||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | At a minimum, water designated for use as domestic or municipal supply (MUN) shall not contain concentrations of chemical constituents in excess of the maximum contaminant levels (MCLs) specified in the following provisions of Title 22 of the California Code of Regulations, which are incorporated by reference into this plan: Tables 64431-A (Inorganic Chemicals) and 64431-B (Fluoride) of Section 64431, Table 64444-A (Organic Chemicals) of Section 64444, and Tables 64449-A (Secondary Maximum Contaminant Levels-Consumer Acceptance Limits) and 64449-B (Secondary Maximum Contaminant Levels-Ranges) of Section 64449.
The Maximum Contaminant Level (MCL) for simazine is 4 ug/L. |
||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Objective/Criterion Reference: | California Code of Regulations, Title 22, Division 4, Chapter 15. Domestic Water Quality and Monitoring | ||||
Evaluation Guideline: | |||||
Guideline Reference: | California Code of Regulations, Title 22, Division 4, Chapter 15. Domestic Water Quality and Monitoring | ||||
Spatial Representation: | Samples were collected from Merced River at River Road near Newman. | ||||
Temporal Representation: | Samples were collected at variable intervals (e.g. several samples per day, daily, and weekly) from January 2000 through June 2005. | ||||
Environmental Conditions: | |||||
QAPP Information: | Data quality: Good. Minimum requirements for the CDPR Surface Water Database are: Name of the sampling agency or organization, Date that each sample was collected, Date of each sample analysis, County where samples were taken, Detailed sampling location information (including latitude and longitude or township/range/section if available), detailed map or description of each sampling site (i.e., address, cross roads, etc.), Name or description of water body sampled, Name of the active ingredient analyzed for; concentration detected (with unit of measurement), and limit of quantitation, Description of analytical QA/QC plan, or statement that no formal plan exists. Additional optional requirements are included on DPR's webpage at http://www.cdpr.ca.gov/docs/emon/surfwtr/caps/req.htm | ||||
QAPP Information Reference(s): | Standard Operating Procedure for Conducting Surface Water Monitoring for Pesticides | ||||
|
|||||
LOE ID: | 22210 | ||||
Pollutant: | Simazine | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
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: | 9 water samples were collected from Merced River in January and February 2005, representing 9 concentrations.0 of 9 available concentrations exceeded the MCL (4 ug/L). | ||||
Data Reference: | Zipped file of Central Valley Waterways Pesticide TMDL monitoring data spreadsheets and reports | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | At a minimum, water designated for use as domestic or municipal supply (MUN) shall not contain concentrations of chemical constituents in excess of the maximum contaminant levels (MCLs) specified in the following provisions of Title 22 of the California Code of Regulations, which are incorporated by reference into this plan: Tables 64431-A (Inorganic Chemicals) and 64431-B (Fluoride) of Section 64431, Table 64444-A (Organic Chemicals) of Section 64444, and Tables 64449-A (Secondary Maximum Contaminant Levels-Consumer Acceptance Limits) and 64449-B (Secondary Maximum Contaminant Levels-Ranges) of Section 64449.
The Maximum Contaminant Level (MCL) for simazine is 4 ug/L. |
||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Objective/Criterion Reference: | California Code of Regulations, Title 22, Division 4, Chapter 15. Domestic Water Quality and Monitoring | ||||
Evaluation Guideline: | |||||
Guideline Reference: | California Code of Regulations, Title 22, Division 4, Chapter 15. Domestic Water Quality and Monitoring | ||||
Spatial Representation: | Samples were collected from Merced River at River Road. | ||||
Temporal Representation: | Samples were collected at daily in two storms in January and February 2005. | ||||
Environmental Conditions: | |||||
QAPP Information: | Data quality: Good. Calanchini, H. 2006. Quality Assurance Project Plan, Sacramento and San Joaquin River Basins and Sacramento-San Joaquin Delta TMDL Monitoring for Organophosphorus Pesticides and Other Pesticides Identified as Posing a High Risk to Surface Waters. John Muir Institute of the Environment, U.C. Davis. Davis, CA. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan. Sacramento and San Joaquin River Basins and Sacramento-San Joaquin Delta TMDL Monitoring for Organophosphorus Pesticides and Other Pesticides Identified as Posing a High Risk to Surface Waters. Final. SWAMP Project ID 02TM5001 (Revision 0.0). John Muir Institute of the Environment, U.C. Davis. Davis, CA. January 26, 2006 | ||||
|
|||||
LOE ID: | 22211 | ||||
Pollutant: | Simazine | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
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: | 9 water samples were collected from Merced River between March and August 2005, representing 9 concentrations. 0 of 9 available concentrations exceeded the MCL (4 ug/L). | ||||
Data Reference: | Zipped file of Central Valley Waterways Pesticide TMDL monitoring data spreadsheets and reports | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | At a minimum, water designated for use as domestic or municipal supply (MUN) shall not contain concentrations of chemical constituents in excess of the maximum contaminant levels (MCLs) specified in the following provisions of Title 22 of the California Code of Regulations, which are incorporated by reference into this plan: Tables 64431-A (Inorganic Chemicals) and 64431-B (Fluoride) of Section 64431, Table 64444-A (Organic Chemicals) of Section 64444, and Tables 64449-A (Secondary Maximum Contaminant Levels-Consumer Acceptance Limits) and 64449-B (Secondary Maximum Contaminant Levels-Ranges) of Section 64449.
The Maximum Contaminant Level (MCL) for simazine is 4 ug/L. |
||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Objective/Criterion Reference: | California Code of Regulations, Title 22, Division 4, Chapter 15. Domestic Water Quality and Monitoring | ||||
Evaluation Guideline: | |||||
Guideline Reference: | California Code of Regulations, Title 22, Division 4, Chapter 15. Domestic Water Quality and Monitoring | ||||
Spatial Representation: | |||||
Temporal Representation: | Samples were collected at weekly in March, July, and August 2005. | ||||
Environmental Conditions: | |||||
QAPP Information: | Data quality: Good. Calanchini, H. 2006. Quality Assurance Project Plan, Sacramento and San Joaquin River Basins and Sacramento-San Joaquin Delta TMDL Monitoring for Organophosphorus Pesticides and Other Pesticides Identified as Posing a High Risk to Surface Waters. John Muir Institute of the Environment, U.C. Davis. Davis, CA. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan. Sacramento and San Joaquin River Basins and Sacramento-San Joaquin Delta TMDL Monitoring for Organophosphorus Pesticides and Other Pesticides Identified as Posing a High Risk to Surface Waters. Final. SWAMP Project ID 02TM5001 (Revision 0.0). John Muir Institute of the Environment, U.C. Davis. Davis, CA. January 26, 2006 | ||||
|
|||||
LOE ID: | 22199 | ||||
Pollutant: | Simazine | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 13 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | 13 water samples were collected from Merced River between March and August 2004, representing 13 concentrations.0 of 13 available concentrations exceeded the MCL (4 ug/L). | ||||
Data Reference: | Zipped file of Central Valley Waterways Pesticide TMDL monitoring data spreadsheets and reports | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | At a minimum, water designated for use as domestic or municipal supply (MUN) shall not contain concentrations of chemical constituents in excess of the maximum contaminant levels (MCLs) specified in the following provisions of Title 22 of the California Code of Regulations, which are incorporated by reference into this plan: Tables 64431-A (Inorganic Chemicals) and 64431-B (Fluoride) of Section 64431, Table 64444-A (Organic Chemicals) of Section 64444, and Tables 64449-A (Secondary Maximum Contaminant Levels-Consumer Acceptance Limits) and 64449-B (Secondary Maximum Contaminant Levels-Ranges) of Section 64449.
The Maximum Contaminant Level (MCL) for simazine is 4 ug/L. |
||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Objective/Criterion Reference: | California Code of Regulations, Title 22, Division 4, Chapter 15. Domestic Water Quality and Monitoring | ||||
Evaluation Guideline: | |||||
Guideline Reference: | California Code of Regulations, Title 22, Division 4, Chapter 15. Domestic Water Quality and Monitoring | ||||
Spatial Representation: | Samples were collected from Merced River at River Road. | ||||
Temporal Representation: | Samples were collected at weekly interval in March, July, and August 2004. | ||||
Environmental Conditions: | |||||
QAPP Information: | Data quality: Good. Calanchini, H. 2006. Quality Assurance Project Plan, Sacramento and San Joaquin River Basins and Sacramento-San Joaquin Delta TMDL Monitoring for Organophosphorus Pesticides and Other Pesticides Identified as Posing a High Risk to Surface Waters. John Muir Institute of the Environment, U.C. Davis. Davis, CA. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan. Sacramento and San Joaquin River Basins and Sacramento-San Joaquin Delta TMDL Monitoring for Organophosphorus Pesticides and Other Pesticides Identified as Posing a High Risk to Surface Waters. Final. SWAMP Project ID 02TM5001 (Revision 0.0). John Muir Institute of the Environment, U.C. Davis. Davis, CA. January 26, 2006 | ||||
|
|||||
LOE ID: | 22212 | ||||
Pollutant: | Simazine | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 13 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | 13 water samples were collected from Merced River between March and August 2006, representing 13 concentrations. 0 of 13 available concentrations exceeded MCL (4 ug/L). | ||||
Data Reference: | Zipped file of Central Valley Waterways Pesticide TMDL monitoring data spreadsheets and reports | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | At a minimum, water designated for use as domestic or municipal supply (MUN) shall not contain concentrations of chemical constituents in excess of the maximum contaminant levels (MCLs) specified in the following provisions of Title 22 of the California Code of Regulations, which are incorporated by reference into this plan: Tables 64431-A (Inorganic Chemicals) and 64431-B (Fluoride) of Section 64431, Table 64444-A (Organic Chemicals) of Section 64444, and Tables 64449-A (Secondary Maximum Contaminant Levels-Consumer Acceptance Limits) and 64449-B (Secondary Maximum Contaminant Levels-Ranges) of Section 64449.
The Maximum Contaminant Level (MCL) for simazine is 4 ug/L. |
||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Objective/Criterion Reference: | California Code of Regulations, Title 22, Division 4, Chapter 15. Domestic Water Quality and Monitoring | ||||
Evaluation Guideline: | |||||
Guideline Reference: | California Code of Regulations, Title 22, Division 4, Chapter 15. Domestic Water Quality and Monitoring | ||||
Spatial Representation: | Samples were collected from Merced River at River Road. | ||||
Temporal Representation: | Samples were collected at weekly in March, July, and August 2006. | ||||
Environmental Conditions: | |||||
QAPP Information: | Data quality: Good. Calanchini, H. 2006. Quality Assurance Project Plan, Sacramento and San Joaquin River Basins and Sacramento-San Joaquin Delta TMDL Monitoring for Organophosphorus Pesticides and Other Pesticides Identified as Posing a High Risk to Surface Waters. John Muir Institute of the Environment, U.C. Davis. Davis, CA. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan. Sacramento and San Joaquin River Basins and Sacramento-San Joaquin Delta TMDL Monitoring for Organophosphorus Pesticides and Other Pesticides Identified as Posing a High Risk to Surface Waters. Final. SWAMP Project ID 02TM5001 (Revision 0.0). John Muir Institute of the Environment, U.C. Davis. Davis, CA. January 26, 2006 | ||||
|
|||||
LOE ID: | 22196 | ||||
Pollutant: | Simazine | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 17 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | 17 water samples were collected from Merced River from January to March 2003, representing 17 concentrations.0 of 17 available concentrations exceeded the MCL (4 ug/L) | ||||
Data Reference: | Zipped file of Central Valley Waterways Pesticide TMDL monitoring data spreadsheets and reports | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | At a minimum, water designated for use as domestic or municipal supply (MUN) shall not contain concentrations of chemical constituents in excess of the maximum contaminant levels (MCLs) specified in the following provisions of Title 22 of the California Code of Regulations, which are incorporated by reference into this plan: Tables 64431-A (Inorganic Chemicals) and 64431-B (Fluoride) of Section 64431, Table 64444-A (Organic Chemicals) of Section 64444, and Tables 64449-A (Secondary Maximum Contaminant Levels-Consumer Acceptance Limits) and 64449-B (Secondary Maximum Contaminant Levels-Ranges) of Section 64449.
The Maximum Contaminant Level (MCL) for simazine is 4 ug/L. |
||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Objective/Criterion Reference: | California Code of Regulations, Title 22, Division 4, Chapter 15. Domestic Water Quality and Monitoring | ||||
Evaluation Guideline: | |||||
Guideline Reference: | California Code of Regulations, Title 22, Division 4, Chapter 15. Domestic Water Quality and Monitoring | ||||
Spatial Representation: | Samples were collected from Merced River at River Road. | ||||
Temporal Representation: | Samples were collected daily during two storms from January through March 2003. | ||||
Environmental Conditions: | |||||
QAPP Information: | Data quality: Good. Calanchini, H. 2006. Quality Assurance Project Plan, Sacramento and San Joaquin River Basins and Sacramento-San Joaquin Delta TMDL Monitoring for Organophosphorus Pesticides and Other Pesticides Identified as Posing a High Risk to Surface Waters. John Muir Institute of the Environment, U.C. Davis. Davis, CA. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan. Sacramento and San Joaquin River Basins and Sacramento-San Joaquin Delta TMDL Monitoring for Organophosphorus Pesticides and Other Pesticides Identified as Posing a High Risk to Surface Waters. Final. SWAMP Project ID 02TM5001 (Revision 0.0). John Muir Institute of the Environment, U.C. Davis. Davis, CA. January 26, 2006 | ||||
|
|||||
LOE ID: | 22197 | ||||
Pollutant: | Simazine | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 19 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | 19 water samples were collected from Merced River from March to August 2003, representing 19 concentrations.0 of 19 available concentrations exceeded the MCL (4 ug/L) | ||||
Data Reference: | Zipped file of Central Valley Waterways Pesticide TMDL monitoring data spreadsheets and reports | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | At a minimum, water designated for use as domestic or municipal supply (MUN) shall not contain concentrations of chemical constituents in excess of the maximum contaminant levels (MCLs) specified in the following provisions of Title 22 of the California Code of Regulations, which are incorporated by reference into this plan: Tables 64431-A (Inorganic Chemicals) and 64431-B (Fluoride) of Section 64431, Table 64444-A (Organic Chemicals) of Section 64444, and Tables 64449-A (Secondary Maximum Contaminant Levels-Consumer Acceptance Limits) and 64449-B (Secondary Maximum Contaminant Levels-Ranges) of Section 64449.
The Maximum Contaminant Level (MCL) for simazine is 4 ug/L. |
||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Objective/Criterion Reference: | California Code of Regulations, Title 22, Division 4, Chapter 15. Domestic Water Quality and Monitoring | ||||
Evaluation Guideline: | |||||
Guideline Reference: | California Code of Regulations, Title 22, Division 4, Chapter 15. Domestic Water Quality and Monitoring | ||||
Spatial Representation: | Samples were collected from Merced River at River Road. | ||||
Temporal Representation: | Samples were collected biweekly from March through August 2003. | ||||
Environmental Conditions: | |||||
QAPP Information: | Data quality: Good. Calanchini, H. 2006. Quality Assurance Project Plan, Sacramento and San Joaquin River Basins and Sacramento-San Joaquin Delta TMDL Monitoring for Organophosphorus Pesticides and Other Pesticides Identified as Posing a High Risk to Surface Waters. John Muir Institute of the Environment, U.C. Davis. Davis, CA. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan. Sacramento and San Joaquin River Basins and Sacramento-San Joaquin Delta TMDL Monitoring for Organophosphorus Pesticides and Other Pesticides Identified as Posing a High Risk to Surface Waters. Final. SWAMP Project ID 02TM5001 (Revision 0.0). John Muir Institute of the Environment, U.C. Davis. Davis, CA. January 26, 2006 | ||||
|
|||||
LOE ID: | 67214 | ||||
Pollutant: | Simazine | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 16 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed Ag Waiver data for Merced River, Lower (McSwain Reservoir to San Joaquin River) to determine beneficial use support and results are as follows: 0 of 16 samples exceed the criterion for Simazine. | ||||
Data Reference: | Data for Various Pollutants in East San Joaquin, 2004-2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The California primary maximum contaminant level for Simazine is 4 ug/L. | ||||
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 Merced River, Lower (McSwain Reservoir to San Joaquin River) was collected at 1 monitoring site [Merced River @ Santa Fe - 535XMRSFD] | ||||
Temporal Representation: | Data was collected over the time period 2/12/2007-9/23/2008. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0 was followed. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0. | ||||
|
|||||
LOE ID: | 67213 | ||||
Pollutant: | Simazine | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 16 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed Ag Waiver data for Merced River, Lower (McSwain Reservoir to San Joaquin River) to determine beneficial use support and results are as follows: 0 of 16 samples exceed the criterion for Simazine. | ||||
Data Reference: | Data for Various Pollutants in East San Joaquin, 2004-2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. (Water Quality Control Plan, Central Valley Region, Sacramento River Basin and San Joaquin River Basin) | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | The Basin Plan states: "Where valid testing has developed 96-hour LC50 values for aquatic organisms..., the Board will consider one tenth of this value for the most sensitive species tested as the upper limit (daily maximum) for the protection of aquatic life... or [O]ther available information on the pesticide..." The evaluation guideline for Simazine, 90 ug/L, is the EC50 for Navicula pelliculosa (freshwater diatom). (USEPA Office of Pesticide Programs Ecotoxicity database) | ||||
Guideline Reference: | OPP Pesticide Ecotoxicity Database. | ||||
Spatial Representation: | Data for this line of evidence for Merced River, Lower (McSwain Reservoir to San Joaquin River) was collected at 1 monitoring site [Merced River @ Santa Fe - 535XMRSFD] | ||||
Temporal Representation: | Data was collected over the time period 2/12/2007-9/23/2008. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0 was followed. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0. | ||||
DECISION ID |
71552 |
Region 5 |
Merced River, Lower (McSwain Reservoir to San Joaquin River) |
||
Pollutant: | Specific Conductivity |
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.
Four lines of evidence are available in the administrative record to assess this pollutant. 0 of the 182 samples exceed the water quality 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. 0 of the 182 samples exceed the water quality criteria and this does not exceed 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 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: | 67066 | ||||
Pollutant: | Specific Conductivity | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 41 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed Ag Waiver data for Merced River, Lower (McSwain Reservoir to San Joaquin River) to determine beneficial use support and results are as follows: 0 of 41 samples exceed the criterion for Conductivity(Us). | ||||
Data Reference: | Data for Various Pollutants in East San Joaquin, 2004-2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The California secondary maximum contaminant levels for electrical conductivity provide a range of values including a recommended level (900 uS/cm), an upper level (1,600 uS/cm) and a short-term level (2,200 uS/cm). The recommended level of 900 uS/cm was used as it is protective of all drinking water uses. | ||||
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 Merced River, Lower (McSwain Reservoir to San Joaquin River) was collected at 1 monitoring site [Merced River @ Santa Fe - 535XMRSFD] | ||||
Temporal Representation: | Data was collected over the time period 2/12/2007-7/20/2010. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0 was followed. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0. | ||||
|
|||||
LOE ID: | 20453 | ||||
Pollutant: | Specific Conductivity | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 134 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | None of the 134 samples collected by the Surface Water Ambient Monitoring Program exceeded the "recommended" Secondary MCL of 900 uS/cm for electrical conductivity | ||||
Data Reference: | San Joaquin River SWAMP Monitoring Data - Drainage Basin Inflows | ||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | The secondary MCLs for electrical conductivity provide a range of values including a recommended level (900 uS/cm), upper level (1600 uS/cm) and a short-term level (2200 uS/cm). The ĀærecommendedĀæ level of 900 uS/cm was used as it is intended to be protective of all drinking water uses | ||||
Objective/Criterion Reference: | California Code of Regulations, Title 22, Division 4, Chapter 15. Domestic Water Quality and Monitoring | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Samples were collected from the Merced River at River Road | ||||
Temporal Representation: | The samples were collected between January 28, 1998 and November 29, 2005 | ||||
Environmental Conditions: | |||||
QAPP Information: | Monitoring was conducted in accordance with the State Water Resources Control Board's Quality Assurance Program Plan for the State of California's Surface Water Ambient Monitoring Program. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 67241 | ||||
Pollutant: | Specific Conductivity | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 6 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | SWAMP data indicates that 0 of 6 sample results exceed the criterion for electrical conductivity. | ||||
Data Reference: | RWB5 Safe to Swim FY0708 FY0809 | ||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | The California Secondary Maximum Contaminant Levels for electrical conductivity provide a range of values including a recommended level (900 uS/cm), an upper level (1,600 uS/cm) and a short-term level (2,200 uS/cm). The recommended level of 900 uS/cm was used as it is protective of all drinking water uses. | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence was collected at two monitoring sites [ Merced River @ Merced Falls Gauging St. - 535MER209, Merced River at Henderson Park - 535MER210] | ||||
Temporal Representation: | Data was collected over the time period 8/27/2008-9/3/2008. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The SWAMP QAMP (2002) was used for data before Septemper 1, 2008 and SWAMP QAPP (2008) was thereafter. | ||||
QAPP Information Reference(s): | Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version) | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
|
|||||
LOE ID: | 67240 | ||||
Pollutant: | Specific Conductivity | ||||
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: | SWAMP data indicates that 0 of the sample results exceed the criterion for electrical conductivity. | ||||
Data Reference: | RWB5S SJR Trends FY0708 FY0809 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The California Secondary Maximum Contaminant Levels for electrical conductivity provide a range of values including a recommended level (900 uS/cm), an upper level (1,600 uS/cm) and a short-term level (2,200 uS/cm). The recommended level of 900 uS/cm was used as it is protective of all drinking water uses. | ||||
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 was collected at one monitoring site [ Merced River @ River Road - 535MER546] | ||||
Temporal Representation: | Data was collected on 5/15/2008. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The SWAMP QAPP (2008) was followed. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
DECISION ID |
91592 |
Region 5 |
Merced River, Lower (McSwain Reservoir to San Joaquin River) |
||
Pollutant: | Thiobencarb/Bolero |
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 sixteen samples exceed the water quality objective for MUN, and zero of the sixteen samples exceed the evaluation guideline for COLD. 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 sixteen samples exceed the water quality objective for MUN, and zero of sixteen samples exceed the evaluation guideline for COLD 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: | 67074 | ||||
Pollutant: | Thiobencarb/Bolero | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 16 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed Ag Waiver data for Merced River, Lower (McSwain Reservoir to San Joaquin River) to determine beneficial use support and results are as follows: 0 of 16 samples exceed the criterion for Thiobencarb. | ||||
Data Reference: | Data for Various Pollutants in East San Joaquin, 2004-2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Waters designated for use as domestic or municipal supply (MUN) shall not contain concentrations of Thiobencarb in excess of 1.0 Āµg/L. (Water Quality Control Plan, Central Valley Region, Sacramento River Basin and San Joaquin River Basin) | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for Merced River, Lower (McSwain Reservoir to San Joaquin River) was collected at 1 monitoring site [Merced River @ Santa Fe - 535XMRSFD] | ||||
Temporal Representation: | Data was collected over the time period 2/12/2007-9/23/2008. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0 was followed. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0. | ||||
|
|||||
LOE ID: | 67073 | ||||
Pollutant: | Thiobencarb/Bolero | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 16 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed Ag Waiver data for Merced River, Lower (McSwain Reservoir to San Joaquin River) to determine beneficial use support and results are as follows: 0 of 16 samples exceed the criterion for Thiobencarb. | ||||
Data Reference: | Data for Various Pollutants in East San Joaquin, 2004-2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. (Water Quality Control Plan, Central Valley Region, Sacramento River Basin and San Joaquin River Basin) | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | The Basin Plan states: "Where valid testing has developed 96-hour LC50 values for aquatic organisms..., the Board will consider one tenth of this value for the most sensitive species tested as the upper limit (daily maximum) for the protection of aquatic life... or [O]ther available information on the pesticide..." The evaluation guideline for Thiobencarb, 1.4 ug/L, is a maximum acceptable toxicicant concentration (MATC) calculated for Daphnia magna (Water flea). (USEPA Office of Pesticide Programs Ecotoxicity database) | ||||
Guideline Reference: | OPP Pesticide Ecotoxicity Database. | ||||
Spatial Representation: | Data for this line of evidence for Merced River, Lower (McSwain Reservoir to San Joaquin River) was collected at 1 monitoring site [Merced River @ Santa Fe - 535XMRSFD] | ||||
Temporal Representation: | Data was collected over the time period 2/12/2007-9/23/2008. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0 was followed. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0. | ||||
DECISION ID |
91700 |
Region 5 |
Merced River, Lower (McSwain Reservoir to San Joaquin River) |
||
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 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 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 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 the one samples exceed 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 are 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: | 67081 | ||||
Pollutant: | Total DDT (sum of 4,4'- and 2,4'- isomers of DDT, DDE, and DDD) | ||||
LOE Subgroup: | Pollutant-Sediment | ||||
Matrix: | Sediment | ||||
Fraction: | Total | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | The sample result did not exceed the evaluation guideline value (572 ug/Kg dry weight). | ||||
Data Reference: | Statewide Stream Pollution Trends Study 2008 | ||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. Discharges shall not result in pesticide concentrations in bottom sediments or aquatic life that adversely affect beneficial uses. (Water Quality Control Plan, Central Valley Region, Sacramento River and San Joaquin River Basins) | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | In freshwater sediments, the probable effect concentration (predictive of sediment toxicity) for total DDTs (sum DDT + sum DDD + sum DDE) is 572 ug/Kg dry weight (MacDonald et al. 2000). | ||||
Guideline Reference: | Development and evaluation of consensus-based sediment quality guidelines for freshwater ecosystems. Environmental Contamination and Toxicology. 39: 20-31 | ||||
Spatial Representation: | Data for this line of evidence was collected at one monitoring site [ Merced River @ River Road - 535MER546] | ||||
Temporal Representation: | Data was collected on 7/23/2008. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The SWAMP QAPP (2008) was followed. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
DECISION ID |
70865 |
Region 5 |
Merced River, Lower (McSwain Reservoir to San Joaquin River) |
||
Pollutant: | Total Dissolved Solids |
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.
Two lines of evidence are available in the administrative record to assess this pollutant. 0 of the 51 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 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. 0 of the 51 samples exceed the water quality objective and this does not exceed 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 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: | 20452 | ||||
Pollutant: | Total Dissolved Solids | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 13 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | None of the 13 samples collected by the Surface Water Ambient Monitoring Program exceeded the "recommended" Secondary MCL of 500 mg/L forTotal Dissolved Solids | ||||
Data Reference: | San Joaquin River SWAMP Monitoring Data - Drainage Basin Inflows | ||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | The secondary MCLs for Total Dissolved Solids provide a range of values including a recommended level (500 mg/L), upper level (1000 mg/L) and a short-term level (1500 mg/L). The ĀærecommendedĀæ concentration was used as it is intended to be protective of all drinking water uses | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | |||||
Guideline Reference: | Compilation of Water Quality Goals | ||||
Spatial Representation: | Samples were collected from the Merced River at River Road | ||||
Temporal Representation: | The samples were collected between June 24, 1998 and November 28, 2001 | ||||
Environmental Conditions: | |||||
QAPP Information: | Monitoring was conducted in accordance with the State Water Resources Control Board's Quality Assurance Program Plan for the State of California's Surface Water Ambient Monitoring Program. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 79624 | ||||
Pollutant: | Total Dissolved Solids | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 38 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | State Water Board staff assessed ILRP data for Merced River, Lower (McSwain Reservoir to San Joaquin River) to determine beneficial use support and results are as follows: 0 of 38 samples exceed the criterion for Dissolved Solids. | ||||
Data Reference: | Data for Various Pollutants in East San Joaquin, 2004-2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Water Quality Control Plan, Central Valley Region Sacramento River Basin and San Joaquin River Basin: At a minimum, water 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 secondary MCL for Total Dissolved Solids is 500 mg/L. | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for Merced River, Lower (McSwain Reservoir to San Joaquin River) was collected at 1 monitoring site [ Merced River @ Santa Fe - 535XMRSFD] | ||||
Temporal Representation: | Data was collected over the time period 2/12/2007-7/20/2010. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0 was followed. | ||||
QAPP Information Reference(s): | |||||
DECISION ID |
91748 |
Region 5 |
Merced River, Lower (McSwain Reservoir to San Joaquin River) |
||
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 zero samples exceed the water quality criteria for MUN, and zero of the zero samples exceed the water quality criteria for COLD. 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 water quality criteria for MUN, and zero of the zero samples exceed the water quality criteria for COLD 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 are 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: | 67083 | ||||
Pollutant: | Toxaphene | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold 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 Ag Waiver data for Merced River, Lower (McSwain Reservoir to San Joaquin River) to determine beneficial use support and results are as follows: 0 of 0 samples exceed the criterion for Toxaphene. Nine samples were not used in the assessment because the laboratory data reporting limit(s) was above the objective and therefore the results could not be quantified with the level of certainty required by the Listing Policy. | ||||
Data Reference: | Data for Various Pollutants in East San Joaquin, 2004-2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Toxaphene criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is 0.0002 ug/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 Merced River, Lower (McSwain Reservoir to San Joaquin River) was collected at 1 monitoring site [Merced River @ Santa Fe - 535XMRSFD] | ||||
Temporal Representation: | Data was collected over the time period 10/21/2008-7/20/2010. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0 was followed. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0. | ||||
|
|||||
LOE ID: | 67082 | ||||
Pollutant: | Toxaphene | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
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 Ag Waiver data for Merced River, Lower (McSwain Reservoir to San Joaquin River) to determine beneficial use support and results are as follows: 0 of 0 samples exceed the criterion for Toxaphene. Nine samples were not used in the assessment because the laboratory data reporting limit(s) was above the objective and therefore the results could not be quantified with the level of certainty required by the Listing Policy. | ||||
Data Reference: | Data for Various Pollutants in East San Joaquin, 2004-2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Toxaphene criterion for the protection of human health from the consumption of water and organisms is 0.00073 ug/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 Merced River, Lower (McSwain Reservoir to San Joaquin River) was collected at 1 monitoring site [Merced River @ Santa Fe - 535XMRSFD] | ||||
Temporal Representation: | Data was collected over the time period 10/21/2008-7/20/2010. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0 was followed. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0. | ||||
DECISION ID |
72788 |
Region 5 |
Merced River, Lower (McSwain Reservoir to San Joaquin River) |
||
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.
Five lines of evidence are available in the administrative record to assess this pollutant. 0 of the 28 water samples exceed the water quality objective for COLD, 0 of the 1 sediment samples exceed the evaluation guideline for COLD, and 0 of the 30 water samples exceed the water quality objective for MUN. 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. 0 of the 28 water samples exceed the water quality objective for COLD, 0 of the 1 sediment samples exceed the evaluation guideline for COLD, and 0 of the 30 water samples exceed the water quality objective for MUN 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: | 67092 | ||||
Pollutant: | Zinc | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 24 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed Ag Waiver data for Merced River, Lower (McSwain Reservoir to San Joaquin River) to determine beneficial use support and results are as follows: 0 of 24 samples exceed the criterion for Zinc. | ||||
Data Reference: | Data for Various Pollutants in East San Joaquin, 2004-2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The California secondary maximum contaminant level for zinc is 5.0 mg/L. | ||||
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 Merced River, Lower (McSwain Reservoir to San Joaquin River) was collected at 1 monitoring site [Merced River @ Santa Fe - 535XMRSFD] | ||||
Temporal Representation: | Data was collected over the time period 2/12/2007-5/19/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0 was followed. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0. | ||||
|
|||||
LOE ID: | 67093 | ||||
Pollutant: | Zinc | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 8 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed AgWaiver data for Merced River, Lower (McSwain Reservoir to San Joaquin River) to determine beneficial use support and results are as follows: 0 of 8 samples exceed the criterion for Zinc. | ||||
Data Reference: | Data for Various Pollutants in East San Joaquin, 2004-2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The California Toxics Rule (CTR) lists criterion continuous concentrations (4-day average) to protect aquatic life in freshwater. The chromium 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 metals criteria. | ||||
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 Merced River, Lower (McSwain Reservoir to San Joaquin River) was collected at 1 monitoring site [ Merced River @ Santa Fe - 535XMRSFD] | ||||
Temporal Representation: | Data was collected over the time period 10/21/2008-5/19/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0 was followed. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0. | ||||
|
|||||
LOE ID: | 6357 | ||||
Pollutant: | Zinc | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 21 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | Not Specified | ||||
Data Used to Assess Water Quality: | Zero of the 21 samples collected by the Surface Water Ambient Monitoring Program exceeded the calculated CTR CMC for dissolved zinc | ||||
Data Reference: | San Joaquin River SWAMP Monitoring Data - Drainage Basin Inflows | ||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | Dissolved zinc levels should not exceed the calculated limit based on the formula: Criteria Maximum Concentration =EXP((0.8473*LN(hardness))+0.884)*(0.978) | ||||
Objective/Criterion Reference: | Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Samples were collected from the Merced River at River Road | ||||
Temporal Representation: | The samples were collected between April 27, 2000 and June 30, 2003 | ||||
Environmental Conditions: | |||||
QAPP Information: | Monitoring was conducted in accordance with the State Water Resources Control Board's Quality Assurance Program Plan for the State of California's Surface Water Ambient Monitoring Program | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 20807 | ||||
Pollutant: | Zinc | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 15 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Zero of the 15 samples collected by the Surface Water Ambient Monitoring Program exceeded the Secondary MCL of 5,000 ug/L for total zinc | ||||
Data Reference: | San Joaquin River SWAMP Monitoring Data - Drainage Basin Inflows | ||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | Total zinc levels should not exceed 5,000 ug/L (Department of Public Health Secondary MCL) | ||||
Objective/Criterion Reference: | California Code of Regulations, Title 22, Division 4, Chapter 15. Domestic Water Quality and Monitoring | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Samples were collected from the Merced River at River Road | ||||
Temporal Representation: | The samples were collected from Apr 27 2000 to Jun 30 2003 | ||||
Environmental Conditions: | |||||
QAPP Information: | Monitoring was conducted in accordance with the State Water Resources Control Board's Quality Assurance Program Plan for the State of California's Surface Water Ambient Monitoring Program. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 67091 | ||||
Pollutant: | Zinc | ||||
LOE Subgroup: | Pollutant-Sediment | ||||
Matrix: | Sediment | ||||
Fraction: | Total | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | SWAMP data indicates that 0 of the sample results exceed the evaluation guideline value for Zinc. | ||||
Data Reference: | Statewide Stream Pollution Trends Study 2008 | ||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations that produce detrimental physiological responses in human, plant, animal, or aquatic life. (Water Quality Control Plan, Central Valley Region, Sacramento River and San Joaquin River Basins) | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | In freshwater sediments, the probable effect concentration (predictive of sediment toxicity) for zinc is 459 mg/Kg dry weight (MacDonald et al. 2000). | ||||
Guideline Reference: | Development and evaluation of consensus-based sediment quality guidelines for freshwater ecosystems. Environmental Contamination and Toxicology. 39: 20-31 | ||||
Spatial Representation: | Data for this line of evidence was collected at one monitoring site [ Merced River @ River Road - 535MER546] | ||||
Temporal Representation: | Data was collected on 7/23/2008. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The SWAMP QAPP (2008) was followed. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
DECISION ID |
91526 |
Region 5 |
Merced River, Lower (McSwain Reservoir to San Joaquin River) |
||
Pollutant: | alpha-Endosulfan (Endosulfan 1) |
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 nine samples exceed the water quality criteria for MUN, and zero of the nine samples exceed the water quality criteria for COLD. 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 nine samples exceed the water quality criteria for MUN, and zero of the nine samples exceed the water quality criteria for COLD 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 are 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: | 67138 | ||||
Pollutant: | alpha-Endosulfan (Endosulfan 1) | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold 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 Ag Waiver data for Merced River, Lower (McSwain Reservoir to San Joaquin River) to determine beneficial use support and results are as follows: 0 of 9 samples exceed the criterion for Endosulfan I. | ||||
Data Reference: | Data for Various Pollutants in East San Joaquin, 2004-2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Endosulfan I criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is 0.056 ug/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 Merced River, Lower (McSwain Reservoir to San Joaquin River) was collected at 1 monitoring site [Merced River @ Santa Fe - 535XMRSFD] | ||||
Temporal Representation: | Data was collected over the time period 10/21/2008-7/20/2010. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0 was followed. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0. | ||||
|
|||||
LOE ID: | 67137 | ||||
Pollutant: | alpha-Endosulfan (Endosulfan 1) | ||||
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 Ag Waiver data for Merced River, Lower (McSwain Reservoir to San Joaquin River) to determine beneficial use support and results are as follows: 0 of 9 samples exceed the criterion for Endosulfan I. | ||||
Data Reference: | Data for Various Pollutants in East San Joaquin, 2004-2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Endosulfan I criterion for the protection of human health from consumption of water and organisms is 110 ug/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 Merced River, Lower (McSwain Reservoir to San Joaquin River) was collected at 1 monitoring site [Merced River @ Santa Fe - 535XMRSFD] | ||||
Temporal Representation: | Data was collected over the time period 10/21/2008-7/20/2010. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0 was followed. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0. | ||||
DECISION ID |
91582 |
Region 5 |
Merced River, Lower (McSwain Reservoir to San Joaquin River) |
||
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 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 water quality 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 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 the zero samples exceed the water quality 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 are 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: | 67136 | ||||
Pollutant: | alpha.-BHC (Benzenehexachloride or alpha-HCH) | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
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 Ag Waiver data for Merced River, Lower (McSwain Reservoir to San Joaquin River) to determine beneficial use support and results are as follows: 9 samples were collected; all have RL greater than the objective; therefore, 0 samples assessed. | ||||
Data Reference: | Data for Various Pollutants in East San Joaquin, 2004-2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The HCH, alpha criterion for the protection of human health from the consumption of water and organisms is 0.0026 ug/L (California Toxics Rule, 2002). | ||||
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 Merced River, Lower (McSwain Reservoir to San Joaquin River) was collected at 1 monitoring site [Merced River @ Santa Fe - 535XMRSFD] | ||||
Temporal Representation: | Data was collected over the time period 10/21/2008-7/20/2010. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0 was followed. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0. | ||||
DECISION ID |
91504 |
Region 5 |
Merced River, Lower (McSwain Reservoir to San Joaquin River) |
||
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 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 nine samples exceed the water quality 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 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 the nine samples exceed the water quality 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 are 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: | 67153 | ||||
Pollutant: | beta-BHC (Benzenehexachloride or beta-HCH) | ||||
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 Ag Waiver data for Merced River, Lower (McSwain Reservoir to San Joaquin River) to determine beneficial use support and results are as follows: 0 of 9 samples exceed the criterion for HCH, beta. | ||||
Data Reference: | Data for Various Pollutants in East San Joaquin, 2004-2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The HCH, beta criterion for the protection of human health from the consumption of water and organisms is 0.014 ug/L (California Toxics Rule, 2002). | ||||
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 Merced River, Lower (McSwain Reservoir to San Joaquin River) was collected at 1 monitoring site [Merced River @ Santa Fe - 535XMRSFD] | ||||
Temporal Representation: | Data was collected over the time period 10/21/2008-7/20/2010. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0 was followed. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0. | ||||
DECISION ID |
91557 |
Region 5 |
Merced River, Lower (McSwain Reservoir to San Joaquin River) |
||
Pollutant: | beta-Endosulfan (Endosulfan 2) |
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 nine samples exceed the water quality criteria for MUN, and zero of the nine samples exceed the water quality criteria for COLD. 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 nine samples exceed the water quality criteria for MUN, and zero of the nine samples exceed the water quality criteria for COLD 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 are 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: | 67154 | ||||
Pollutant: | beta-Endosulfan (Endosulfan 2) | ||||
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 Ag Waiver data for Merced River, Lower (McSwain Reservoir to San Joaquin River) to determine beneficial use support and results are as follows: 0 of 9 samples exceed the criterion for Endosulfan II. | ||||
Data Reference: | Data for Various Pollutants in East San Joaquin, 2004-2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The beta-endosulfan criterion for the protection of human health from consumption of water and organisms is 110 ug/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 Merced River, Lower (McSwain Reservoir to San Joaquin River) was collected at 1 monitoring site [Merced River @ Santa Fe - 535XMRSFD] | ||||
Temporal Representation: | Data was collected over the time period 10/21/2008-7/20/2010. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0 was followed. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0. | ||||
|
|||||
LOE ID: | 67164 | ||||
Pollutant: | beta-Endosulfan (Endosulfan 2) | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold 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 Ag Waiver data for Merced River, Lower (McSwain Reservoir to San Joaquin River) to determine beneficial use support and results are as follows: 0 of 9 samples exceed the criterion for Endosulfan II. | ||||
Data Reference: | Data for Various Pollutants in East San Joaquin, 2004-2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Endosulfan II criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is 0.056 ug/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 Merced River, Lower (McSwain Reservoir to San Joaquin River) was collected at 1 monitoring site [Merced River @ Santa Fe - 535XMRSFD] | ||||
Temporal Representation: | Data was collected over the time period 10/21/2008-7/20/2010. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0 was followed. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0. | ||||
DECISION ID |
74394 |
Region 5 |
Merced River, Lower (McSwain Reservoir to San Joaquin River) |
||
Pollutant: | pH |
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.
Nine lines of evidence are available in the administrative record to assess this pollutant. 0 of the 48 samples exceed the water quality objective for MUN, 4 of the 169 samples exceed the water quality objective for COLD, and 0 of the 7 samples exceed the water quality objective for REC1. 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. 0 of the 48 samples exceed the water quality objective for MUN, 4 of the 169 samples exceed the water quality objective for COLD, and 0 of the 7 samples exceed the water quality objective for REC1 and this does not exceed 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 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: | 67188 | ||||
Pollutant: | pH | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Water Contact Recreation | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | SWAMP data indicates that 0 of the sample results exceed the criterion for pH. | ||||
Data Reference: | RWB5S SJR Trends FY0708 FY0809 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | pH should not be lower than 6.5 or higher than 8.5. (Water Quality Control Plan, Central Valley Region, Sacramento River Basin and San Joaquin River Basin) | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence was collected at one monitoring site [ Merced River @ River Road - 535MER546] | ||||
Temporal Representation: | Data was collected on 5/15/2008. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The SWAMP QAPP (2008) was followed. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
|
|||||
LOE ID: | 67199 | ||||
Pollutant: | pH | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Water Contact Recreation | ||||
Number of Samples: | 6 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | SWAMP data indicates that 0 of 6 sample results exceed the criterion for pH. | ||||
Data Reference: | RWB5 Safe to Swim FY0708 FY0809 | ||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | pH should not be lower than 6.5 or higher than 8.5. (Water Quality Control Plan, Central Valley Region, Sacramento River Basin and San Joaquin River Basin) | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence was collected at two monitoring sites [ Merced River @ Merced Falls Gauging St. - 535MER209, Merced River at Henderson Park - 535MER210] | ||||
Temporal Representation: | Data was collected over the time period 8/27/2008-9/3/2008. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The SWAMP QAPP (2008) was followed. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
|
|||||
LOE ID: | 67197 | ||||
Pollutant: | pH | ||||
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: | SWAMP data indicates that 0 of the sample results exceed the criterion for pH. | ||||
Data Reference: | RWB5S SJR Trends FY0708 FY0809 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | pH should not be lower than 6.5 or higher than 8.5. (Water Quality Control Plan, Central Valley Region, Sacramento River Basin and San Joaquin River Basin) | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence was collected at one monitoring site [ Merced River @ River Road - 535MER546] | ||||
Temporal Representation: | Data was collected on 5/15/2008. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The SWAMP QAPP (2008) was followed. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
|
|||||
LOE ID: | 79629 | ||||
Pollutant: | pH | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 41 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | State Water Board staff assessed ILRP data for Merced River, Lower (McSwain Reservoir to San Joaquin River) to determine beneficial use support and results are as follows: 0 of 41 samples exceed the criterion for pH. | ||||
Data Reference: | Data for Various Pollutants in East San Joaquin, 2004-2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Water Quality Control Plan, Central Valley Region Sacramento River Basin and San Joaquin River Basin: pH should not be lower than 6.5 or higher than 8.5. | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for Merced River, Lower (McSwain Reservoir to San Joaquin River) was collected at 1 monitoring site [ Merced River @ Santa Fe - 535XMRSFD] | ||||
Temporal Representation: | Data was collected over the time period 2/12/2007-7/20/2010. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0 was followed. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 67200 | ||||
Pollutant: | pH | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 6 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | SWAMP data indicates that 0 of 6 sample results exceed the criterion for pH. | ||||
Data Reference: | RWB5 Safe to Swim FY0708 FY0809 | ||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | pH should not be lower than 6.5 or higher than 8.5. (Water Quality Control Plan, Central Valley Region, Sacramento River Basin and San Joaquin River Basin) | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence was collected at two monitoring sites [ Merced River @ Merced Falls Gauging St. - 535MER209, Merced River at Henderson Park - 535MER210] | ||||
Temporal Representation: | Data was collected over the time period 8/27/2008-9/3/2008. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The SWAMP QAPP (2008) was followed. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
|
|||||
LOE ID: | 22225 | ||||
Pollutant: | pH | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Aquatic Life Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 20 | ||||
Number of Exceedances: | 1 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | The East San Joaquin Water Quality Coalition collected 20 samples from July 2004 to September 2006. One out of 20 samples was outside the acceptable range; the sample was lower than the acceptable range. | ||||
Data Reference: | Revised Draft of the 2007 Review of the Monitoring Data for the Irrigated Lands Regulatory Conditional Waiver Program | ||||
Monitoring and Reporting Program, Order Nos. R5-2003-0826, R5-2005-0833, and R5-2008-0005 for Coalition Groups Under Resolution No. R5-2003-0105, Conditional Waiver of Waste Discharge Requirements for Discharges From Irrigated Lands Within the Central Valley Region | |||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The pH of water shall not be depressed below 6.5,raised above 8.5, or changed at any time more than 0.5 units from normal ambient pH. | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Samples were collected from Merced River at Santa Fe. | ||||
Temporal Representation: | Sampling occurred from July 2004 to September 2006. | ||||
Environmental Conditions: | |||||
QAPP Information: | Data quality: Good. Monitoring was conducted in accordance with Central Valley Water Board Monitoring and Reporting Program (order number R5-2003-0826) requirements (CVRWQCB, 2003) | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 67198 | ||||
Pollutant: | pH | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | SWAMP data indicates that 0 of the sample results exceed the criterion for pH. | ||||
Data Reference: | RWB5S SJR Trends FY0708 FY0809 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | pH should not be lower than 6.5 or higher than 8.5. (Water Quality Control Plan, Central Valley Region, Sacramento River Basin and San Joaquin River Basin) | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence was collected at one monitoring site [ Merced River @ River Road - 535MER546] | ||||
Temporal Representation: | Data was collected on 5/15/2008. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The SWAMP QAPP (2008) was followed. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
|
|||||
LOE ID: | 67201 | ||||
Pollutant: | pH | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 6 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | SWAMP data indicates that 0 of 6 sample results exceed the criterion for pH. | ||||
Data Reference: | RWB5 Safe to Swim FY0708 FY0809 | ||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | pH should not be lower than 6.5 or higher than 8.5. (Water Quality Control Plan, Central Valley Region, Sacramento River Basin and San Joaquin River Basin) | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence was collected at two monitoring sites [ Merced River @ Merced Falls Gauging St. - 535MER209, Merced River at Henderson Park - 535MER210] | ||||
Temporal Representation: | Data was collected over the time period 8/27/2008-9/3/2008. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The SWAMP QAPP (2008) was followed. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
|
|||||
LOE ID: | 22226 | ||||
Pollutant: | pH | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Aquatic Life Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 101 | ||||
Number of Exceedances: | 3 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | The Central Valley Regional Water Quality Control Board Surface Water Ambient Monitoring Program collected 101 samples from January 1998 to November 2005. Three out of 101 samples were outside the acceptable range; all three samples were higher than the acceptable range. | ||||
Data Reference: | Monitoring Data from the Surface Water Ambient Monitoring Program (SWAMP), San Joaquin River Basin - 2007 Data Review | ||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | The pH of water shall not be depressed below 6.5,raised above 8.5, or changed at any time more than 0.5 units from normal ambient pH. | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Samples were collected from Merced River at River Road. | ||||
Temporal Representation: | Sampling occurred from January 1998 to November 2005. | ||||
Environmental Conditions: | |||||
QAPP Information: | Data quality: Good. Monitoring was conducted in accordance with the State Water Resources Control Board's Quality Assurance Program Plan for the State of California's Surface Water Ambient Monitoring Program. | ||||
QAPP Information Reference(s): | Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version) | ||||
|
|||||
LOE ID: | 79628 | ||||
Pollutant: | pH | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 41 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | State Water Board staff assessed ILRP data for Merced River, Lower (McSwain Reservoir to San Joaquin River) to determine beneficial use support and results are as follows: 0 of 41 samples exceed the criterion for pH. | ||||
Data Reference: | Data for Various Pollutants in East San Joaquin, 2004-2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Water Quality Control Plan, Central Valley Region Sacramento River Basin and San Joaquin River Basin: pH should not be lower than 6.5 or higher than 8.5. | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for Merced River, Lower (McSwain Reservoir to San Joaquin River) was collected at 1 monitoring site [ Merced River @ Santa Fe - 535XMRSFD] | ||||
Temporal Representation: | Data was collected over the time period 2/12/2007-7/20/2010. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The Quality Assurance Project Plan by the East San Joaquin Water Quality Coalition, Revision 1.0 was followed. | ||||
QAPP Information Reference(s): | |||||
DECISION ID |
75639 |
Region 5 |
Merced River, Lower (McSwain Reservoir to San Joaquin River) |
||
Pollutant: | Group A Pesticides |
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: | 2011 |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | 303(d) listing decisions made prior to 2006 were not held in an assessment database. The Regional Boards will update this decision when new data and information become available and are assessed. |
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. |
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LOE ID: | 4478 | ||||
Pollutant: | Group A Pesticides | ||||
LOE Subgroup: | Pollutant-Tissue | ||||
Matrix: | Tissue | ||||
Fraction: | Not Recorded | ||||
Beneficial Use: | Commercial or recreational collection of fish, shellfish, or organisms | ||||
Number of Samples: | 0 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | Not Specified | ||||
Data Used to Assess Water Quality: | Unspecified--This LOE is a placeholder to support a 303(d) listing decision made prior to 2006. | ||||
Data Reference: | Placeholder reference pre-2006 303(d) | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Unspecified | ||||
Objective/Criterion Reference: | Placeholder reference pre-2006 303(d) | ||||
Evaluation Guideline: | Unspecified | ||||
Guideline Reference: | Placeholder reference pre-2006 303(d) | ||||
Spatial Representation: | Unspecified | ||||
Temporal Representation: | Unspecified | ||||
Environmental Conditions: | Unspecified | ||||
QAPP Information: | Unspecified | ||||
QAPP Information Reference(s): | |||||