Water Body Name: | Wadsworth Canal |
Water Body ID: | CAR5203000020041130173733 |
Water Body Type: | River & Stream |
Lines of Evidence (LOEs) for Decision ID 4744 |
LOE ID: | 23221 |
Pollutant: | Diazinon |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | Total |
Beneficial Use: | Warm Freshwater Habitat |
Aquatic Life Use: | Warm Freshwater Habitat |
Number of Samples: | 7 |
Number of Exceedances: | 5 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Thirty-five water samples were collected from Wadsworth Canal from January to February 2003, representing seven calculated 4-day average diazinon concentrations and thirty-five 1-hour average diazinon concentrations. Five of the seven available calculated 4-day average diazinon concentrations exceeded the 4-day average diazinon criterion of 0.100 ug/L. Seven of the thirty-five available 1-hour average diazinon concentrations exceeded the 1-hour average diazinon criterion of 0.160 ug/L. |
Data Reference: | Zipped file of Central Valley Waterways Pesticide TMDL monitoring data spreadsheets and reports |
Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in concentrations 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. |
Objective/Criterion Reference: | Central Valley Regional Water Quality Control Board. Water Quality Control Plan (Basin Plan) for the California Regional Water Quality Control Board - Central Valley Region |
Evaluation Guideline: | California Department of Fish and Game Hazard Assessment Diazinon Criteria: 0.160 ug/L as a 1-hour average diazinon concentration, and 0.100 ug/L as a 4-day average diazinon concentration, not to be exceeded more than once every three years. |
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 Wadsworth Canal at South Butte Road. |
Temporal Representation: | Samples were collected hourly to daily during two storms in January and February 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: | 23222 |
Pollutant: | Diazinon |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | Total |
Beneficial Use: | Warm Freshwater Habitat |
Aquatic Life Use: | Warm Freshwater Habitat |
Number of Samples: | 10 |
Number of Exceedances: | 5 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Twenty-eight water samples were collected from Wadsworth Canal from January to February 2004, representing ten calculated 4-day average diazinon concentrations and twenty-eight 1-hour average diazinon concentrations. Five of the ten available calculated 4-day average diazinon concentrations exceeded the 4-day average diazinon criterion of 0.100 ug/L. Nine of the twenty-eight available 1-hour average diazinon concentrations exceeded the 1-hour average diazinon criterion of 0.160 ug/L. |
Data Reference: | Zipped file of Central Valley Waterways Pesticide TMDL monitoring data spreadsheets and reports |
Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in concentrations 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. |
Objective/Criterion Reference: | Central Valley Regional Water Quality Control Board. Water Quality Control Plan (Basin Plan) for the California Regional Water Quality Control Board - Central Valley Region |
Evaluation Guideline: | California Department of Fish and Game Hazard Assessment Diazinon Criteria: 0.160 ug/L as a 1-hour average diazinon concentration, and 0.100 ug/L as a 4-day average diazinon concentration, not to be exceeded more than once every three years. |
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 Wadsworth Canal at South Butte Road. |
Temporal Representation: | Samples were collected at variable intervals (biweekly and weekly) from January to March 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: | 2675 |
Pollutant: | Diazinon |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | Dissolved |
Beneficial Use: | Cold Freshwater Habitat |
Number of Samples: | 162 |
Number of Exceedances: | 87 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Eighty-seven of 162 samples exceeded the acute guideline (4-day average) (Dileanis et al., 2002; Dileanis, 2003a; Dileanis, 2003b; Gill, 2002; Holmes et al., 2000; Nordmark, 1999; Nordmark, 2000). |
Data Reference: | Placeholder reference 2006 303(d) |
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. |
Objective/Criterion Reference: | Placeholder reference 2006 303(d) |
Evaluation Guideline: | CDFG Hazard Assessment Criteria - 0.10 ug/L 4-day average and 0.16 ug/L 1-hour average (Finlayson, 2004). |
Guideline Reference: | Placeholder reference 2006 303(d) |
Spatial Representation: | Samples were collected at Wadsworth Canal at Franklin Road; in 2000 samples were also collected from Wadsworth Canal at South Butte Road. |
Temporal Representation: | Samples were collected in Jan. and Feb (2/day) 1994, 1999, 2000, 2001 and 2002; 2 in Dec. 1998; in 2000 and 2001, 3 samples were collected in March, 3/day in 2002. |
Environmental Conditions: | |
QAPP Information: | Data from USGS reports are considered of adequate quality per section 6.1.4 of the Policy. |
QAPP Information Reference(s): | |
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LOE ID: | 23224 |
Pollutant: | Diazinon |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | Total |
Beneficial Use: | Warm Freshwater Habitat |
Aquatic Life Use: | Warm Freshwater Habitat |
Number of Samples: | 29 |
Number of Exceedances: | 13 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Sixty-seven water samples were collected from Wadsworth Canal from January 2000 through April 2005, representing twenty-nine calculated 4-day average diazinon concentrations and sixty-seven 1-hour average diazinon concentrations. Thirteen of the twenty-nine available calculated 4-day average diazinon concentrations exceeded the 4-day average diazinon criterion of 0.100 ug/L. Sixteen of the sixty-seven available 1-hour average diazinon concentrations exceeded the 1-hour average diazinon criterion of 0.160 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 | |
Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in concentrations 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. |
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 |
Central Valley Regional Water Quality Control Board. Water Quality Control Plan (Basin Plan) for the California Regional Water Quality Control Board - Central Valley Region | |
Evaluation Guideline: | California department of Fish and Game Hazard Assessment Diazinon Criteria: 0.160 ug/L as a 1-hour average diazinon concentration, and 0.100 ug/L as a 4-day average diazinon concentration, not to be exceeded more than once every three years. |
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 Wadsworth Canal at South Butte Road and at Franklin Road. |
Temporal Representation: | Samples were collected at variable intervals (e.g., weekly and monthly) from January 2000 through April 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: | 23223 |
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: | 1 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Fifteen water samples were collected from Wadsworth Canal from January 2005 through September 2006, representing fifteen calculated 4-day average diazinon concentrations and fifteen 1-hour average diazinon concentrations. One of the fifteen available 4-day average diazinon concentrations exceeded the 4-day average diazinon criterion of 0.100 ug/L. Zero of the fifteen available 1-hour average diazinon concentrations exceeded the 1-hour average diazinon criterion of 0.160 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 | |
Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in concentrations 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. |
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 |
Central Valley Regional Water Quality Control Board. Water Quality Control Plan (Basin Plan) for the California Regional Water Quality Control Board - Central Valley Region | |
Evaluation Guideline: | California Department o0f Fish and Game Hazard Assessment Diazinon Criteria: 0.160 ug/L as a 1-hour average diazinon concentration, and 0.100 ug/L as a 4-day average diazinon concentration, not to be exceeded more than once every three years. |
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 Wadsworth Canal from South Butte Road. |
Temporal Representation: | Samples were collected monthly from January 2005 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): |
Lines of Evidence (LOEs) for Decision ID 9677 |
LOE ID: | 20991 |
Pollutant: | Ammonia |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Municipal & Domestic Supply |
Number of Samples: | 59 |
Number of Exceedances: | 0 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | 0 of the 59 samples collected by the Surface Water Ambient Monitoring Program exceeded the evaluation objective for Ammonia. |
Data Reference: | SWAMP data entered by SWRCB into BDAT database |
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: | Central Valley Regional Water Quality Control Board. Water Quality Control Plan (Basin Plan) for the California Regional Water Quality Control Board - Central Valley Region |
Evaluation Guideline: | Ammonia levels should not exceed 30 mg/L (USEPA Health Advisory) |
Guideline Reference: | Compilation of Water Quality Goals |
Spatial Representation: | Samples were collected at RD777 @ Eager/Larkin Road. Samples were collected at RD777 @ Nuestro Road. Samples were collected at RD777 @ Paseo Ave.. Samples were collected at Wadsworth Canal RD777 @ East Butte Rd. |
Temporal Representation: | The samples were collected from Jan 20 2000 to Mar 18 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): |
Lines of Evidence (LOEs) for Decision ID 11525 |
LOE ID: | 23220 |
Pollutant: | Copper |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | Dissolved |
Beneficial Use: | Warm Freshwater Habitat |
Aquatic Life Use: | Warm Freshwater Habitat |
Number of Samples: | 5 |
Number of Exceedances: | 1 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Five samples were taken from Wadsworth Canal in 2006. One of the five samples exceed guidelines for dissolved copper. |
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 | |
Water Quality Objective/Criterion: | California Toxics Rule Criteria (USEPA) - Freshwater Aquatic Life ProtectionContinuous Concentration (4-day Average) calculated based on the fallowing formula (e{.8545xLN[hardness]}-1.702)x(0.960) which incorporates hardnessU.S. Environmental Protection Agency, Federal Register, Volume 65, No. 97 (Thursday, 18 May 2000), pp. 31682-31719 [California Toxics Rule]; and Federal Register, Volume 66, No. 30 (Tuesday, 13 February 2001), pp. 9960-9962 [California Toxics Rule Correction] http://www.gpoaccess.gov/fr/browse.html. |
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 |
Central Valley Regional Water Quality Control Board. Water Quality Control Plan (Basin Plan) for the California Regional Water Quality Control Board - Central Valley Region | |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | Samples were collected from Wadsworth Canal at South Butte Road. |
Temporal Representation: | Samples were collected between March and 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): |
Lines of Evidence (LOEs) for Decision ID 11526 |
LOE ID: | 23225 |
Pollutant: | Escherichia coli (E. Coli) |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Water Contact Recreation |
Number of Samples: | 14 |
Number of Exceedances: | 4 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | The Sac Valley Water Quality Coalition collected 14 samples from March 2005 to September 2006. Four of the 14 samples 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 | |
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: | Central Valley Regional Water Quality Control Board. Water Quality Control Plan (Basin Plan) for the California Regional Water Quality Control Board - Central Valley Region |
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: | |
Spatial Representation: | Samples were collected from Wadsworth Canal at South Butte Road. |
Temporal Representation: | Sampling occurred from March 2005 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): |
Lines of Evidence (LOEs) for Decision ID 11527 |
LOE ID: | 23216 |
Pollutant: | Lead |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | Dissolved |
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: | 5 samples were taken from Wadsworth Canal between March 2005 and September 2006. 0 of the 5 samples exceeds guidelines for dissolved lead. |
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 | |
Water Quality Objective/Criterion: | California Toxics Rule Criteria (USEPA) - Freshwater Aquatic Life ProtectionContinuous Concentration (4-day Average) calculated based on the following formula(e(1.273xLN(hardness))-4.705)x((1.46203-LN(hardness))x0.145712)U.S. Environmental Protection Agency, Federal Register, Volume 65, No. 97 (Thursday, 18 May 2000), pp. 31682-31719 [California Toxics Rule]; and Federal Register, Volume 66, No. 30 (Tuesday, 13 February 2001), pp. 9960-9962 [California Toxics Rule Correction] http://www.gpoaccess.gov/fr/browse.html. |
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 |
Central Valley Regional Water Quality Control Board. Water Quality Control Plan (Basin Plan) for the California Regional Water Quality Control Board - Central Valley Region | |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | Samples were collected from Wadsworth Canal at South Butte Rd |
Temporal Representation: | Samples were collected between March 2005 and September 2006. Samples were collected at 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): |
Lines of Evidence (LOEs) for Decision ID 15181 |
LOE ID: | 26204 |
Pollutant: | Methidathion |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | Total |
Beneficial Use: | Warm Freshwater Habitat |
Number of Samples: | 28 |
Number of Exceedances: | 1 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Sixty-three individual water samples were collected from Wadsworth Canal, under the Pesticide TMDL program, in January and February 2003 and between January and March 2004. The 63 individual water samples represent 28 daily maximum methidathion concentrations. One of the 28 daily maximum methidathion concentrations (collected on 28 January 2004) exceeded the Evaluation Guideline of 0.22 ug/L. |
Data Reference: | Zipped file of Central Valley Waterways Pesticide TMDL monitoring data spreadsheets and reports |
Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in concentrations 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. |
Objective/Criterion Reference: | Central Valley Regional Water Quality Control Board. Water Quality Control Plan (Basin Plan) for the California Regional Water Quality Control Board - Central Valley Region |
Evaluation Guideline: | Where valid testing has developed 96 hour LC50 values for aquatic organisms (the concentration that kills one half of the test organisms in 96 hours), 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. Other available technical information on the pesticide (such as Lowest Observed Effect Concentrations and No Observed Effect Levels), the water bodies and the organisms involved will be evaluated to determine if lower concentrations are required to meet the narrative objectives.
The 96-hour LC50 for methidathion for the most sensitive freshwater species tested (Ceriodaphnia dubia , a water flea), is 2.2 ug/L. The Evaluation Guideline is based on one-tenth of the 96-hour LC50 and, therefore the Evaluation Guideline value is 0.22 ug/L. |
Guideline Reference: | Central Valley Regional Water Quality Control Board. Water Quality Control Plan (Basin Plan) for the California Regional Water Quality Control Board - Central Valley Region |
ECOTOX database, aquatic data. U. S. Environmental Protection Agency | |
Spatial Representation: | Water samples were collected from Wadsworth Canal at South Butte Road. |
Temporal Representation: | Water samples were collected from Wadsworth Canal typically during, or around, storm events. Water samples were collected 1, 2, or 3 times per day between January 10 and January 14, 2003 and between February 13 and February 20 2003; on January 31 2004; on February 2, 2004; 1, 2, or 3 times per day between February 15 and February 19, 2004; on February 26, 2004; on March 3, 2004; and on March 10, 2004. |
Environmental Conditions: | |
QAPP Information: | Data Quality: Good. All sampling, analysis and QA/QC protocols are described in a QAPP (Calanchini et al., 2006). |
QAPP Information Reference(s): | Zipped file of Central Valley Waterways Pesticide TMDL monitoring data spreadsheets and reports |
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LOE ID: | 26206 |
Pollutant: | Methidathion |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | Total |
Beneficial Use: | Warm Freshwater Habitat |
Number of Samples: | 50 |
Number of Exceedances: | 3 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Sixtty-six water samples were collected from Wadsworth Canal, representing 50 daily-maximum methidathion concentrations, as reported in the DPR Surface Water Database. Three of the 50 daily-maximum methidathion concentrations exceed the Evaluation Guideline of 0.22 ug/L. |
Data Reference: | Surface Water database (SWDB) for Central Valley waterbodies, 2000-2005 |
Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in concentrations 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. |
Objective/Criterion Reference: | Central Valley Regional Water Quality Control Board. Water Quality Control Plan (Basin Plan) for the California Regional Water Quality Control Board - Central Valley Region |
Evaluation Guideline: | Where valid testing has developed 96 hour LC50 values for aquatic organisms (the concentration that kills one half of the test organisms in 96 hours), 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. Other available technical information on the pesticide (such as Lowest Observed Effect Concentrations and No Observed Effect Levels), the water bodies and the organisms involved will be evaluated to determine if lower concentrations are required to meet the narrative objectives.
The 96-hour LC50 for methidathion for the most sensitive freshwater species tested (Ceriodaphnia dubia, a water flea), is 2.2 ug/L. The Evaluation Guideline is based on one-tenth of the 96-hour LC50 value and, therefore, the Evaluation Guideline value is 0.22 ug/L. |
Guideline Reference: | National Recommended Water Quality Criteria. United States Environmental Protection Agency. Office of Water. Office of Science and Technology. 4304T |
Spatial Representation: | Water samples were collected from Wadsworth Canal at South Butte Road |
Temporal Representation: | Water samples were collected from Wadsworth Canal |
Environmental Conditions: | |
QAPP Information: | Data quality: Good. Minimum requirements for the 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 DPRs webpage at http://www.cdpr.ca.gov/docs/emon/surfwtr/caps/req.htm |
QAPP Information Reference(s): | Surface Water database (SWDB) for Central Valley waterbodies, 2000-2005 |
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LOE ID: | 26205 |
Pollutant: | Methidathion |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | Total |
Beneficial 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: | Fifteen water samples were collected from Wadsworth Canal, under the Irrigated Lands Regulatory Program, between January 2005 and September 2006, representing 15 daily-maximum methidathion concentrations. Zero of the 15 water samples contained methidathion at concentrations that exceed the Evaluation Guideline of 0.22 ug/L. |
Data Reference: | Revised Draft of the 2007 Review of the Monitoring Data for the Irrigated Lands Regulatory Conditional Waiver Program |
Zipped file of Central Valley Waterways Pesticide TMDL monitoring data spreadsheets and reports | |
Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in concentrations 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. |
Objective/Criterion Reference: | Central Valley Regional Water Quality Control Board. Water Quality Control Plan (Basin Plan) for the California Regional Water Quality Control Board - Central Valley Region |
Evaluation Guideline: | Where valid testing has developed 96 hour LC50 values for aquatic organisms (the concentration that kills one half of the test organisms in 96 hours), 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. Other available technical information on the pesticide (such as Lowest Observed Effect Concentrations and No Observed Effect Levels), the water bodies and the organisms involved will be evaluated to determine if lower concentrations are required to meet the narrative objectives.
The 96-hour LC50 for methidathion for the most sensitive freshwater species tested (Ceriodaphnia dubia, a water flea), is 2.2 ug/L. The Evaluation Guideline is based on one-tenth of the 96-hour LC50 value and, therefore, the Evaluation Guideline value is 0.22 ug/L. |
Guideline Reference: | Compilation of Water Quality Goals |
Spatial Representation: | Water samples were collected from Wadsworth Canal at South Butte Road. |
Temporal Representation: | Water samples were collected from Wadsworth Canal monthly of every two months between January 27, 2005 and September 7, 2005; twice in March 2006; and monthly between May 24, 2006 and September 19, 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. |
QAPP Information Reference(s): |
Lines of Evidence (LOEs) for Decision ID 11529 |
LOE ID: | 23226 |
Pollutant: | Toxicity |
LOE Subgroup: | Toxicity |
Matrix: | Sediment |
Fraction: | Total |
Beneficial Use: | Warm Freshwater Habitat |
Aquatic Life Use: | Warm Freshwater Habitat |
Number of Samples: | 1 |
Number of Exceedances: | 1 |
Data and Information Type: | TOXICITY TESTING |
Data Used to Assess Water Quality: | Data is available for a single sample collected on 5 October 2005. The sample, tested with Hyalella azteca, was toxic and violated the narrative toxicity objective. The mean percent survival was 83.75, which represented 88% of the control. |
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 | |
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: | Central Valley Regional Water Quality Control Board. Water Quality Control Plan (Basin Plan) for the California Regional Water Quality Control Board - Central Valley Region |
Evaluation Guideline: | Statistically significant difference from control sediment using Dunnett's test in 10-day Hyalella azteca sediment toxicity tests. Arcsin squareroot transformation was used when necessary to meet the assumptions of normality and homogeneity of variance. Steel's Many-One Rank Test was used for comparison to control if these assumptions were not met after transformation. |
Guideline Reference: | |
Spatial Representation: | The sample was collected from Wadsworth Canal at South Butte Road. |
Temporal Representation: | The sample was collected on 5 October 2005. |
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): |
Lines of Evidence (LOEs) for Decision ID 9678 |
LOE ID: | 21072 |
Pollutant: | Specific Conductivity |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
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 Specific Conductivity. |
Data Reference: | SWAMP data entered by SWRCB into BDAT database |
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: | Central Valley Regional Water Quality Control Board. Water Quality Control Plan (Basin Plan) for the California Regional Water Quality Control Board - Central Valley Region |
Evaluation Guideline: | The water quality objective used was the California Secondary MCL recommended level of 900 uS/cm. The Basin Plan includes chemical constituent water quality objectives that include (by reference) secondary maximum contaminant levels (MCLs) protective of MUN (CVRWQCB, 2007a).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 recommended concentration was used as it is intended to be protective of all drinking water uses. |
Guideline Reference: | Compilation of Water Quality Goals |
Spatial Representation: | Samples were collected at RD777 @ Eager/Larkin Road. Samples were collected at RD777 @ Nuestro Road. Samples were collected at RD777 @ Paseo Ave.. Samples were collected at Wadsworth Canal @ Acacia Rd.. |
Temporal Representation: | The samples were collected from Dec 7 2000 to Apr 16 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): |
Lines of Evidence (LOEs) for Decision ID 11535 |
LOE ID: | 23227 |
Pollutant: | Toxicity |
LOE Subgroup: | Toxicity |
Matrix: | Water |
Fraction: | Total |
Beneficial Use: | Warm Freshwater Habitat |
Aquatic Life Use: | Warm Freshwater Habitat |
Number of Samples: | 8 |
Number of Exceedances: | 0 |
Data and Information Type: | TOXICITY TESTING |
Data Used to Assess Water Quality: | None of the 8 samples tested with Pimephales promelas were toxic and violated the narrative toxicity 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 | |
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: | Central Valley Regional Water Quality Control Board. Water Quality Control Plan (Basin Plan) for the California Regional Water Quality Control Board - Central Valley Region |
Evaluation Guideline: | Statistically significant difference from control using a t-test with 4-day acute-style toxicity tests. |
Guideline Reference: | |
Spatial Representation: | The sample was collected from Wadsworth Canal at South Butte Road. |
Temporal Representation: | Samples were collected on the following dates: 27 Jan 2005, 19 March 2005, 3 May 2005, 8 June 2005, 7 July 2005, 2 August 2005, 7 September 2005, and 5 October 2005. |
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): | Methods for Measuring the Acute Toxicity of Effluents and Receiving Waters to Freshwater and Marine Organisms, Fifth Edition. EPA-821-R-02-012 |
| |
LOE ID: | 23228 |
Pollutant: | Toxicity |
LOE Subgroup: | Toxicity |
Matrix: | Water |
Fraction: | Total |
Beneficial Use: | Warm Freshwater Habitat |
Aquatic Life Use: | Warm Freshwater Habitat |
Number of Samples: | 8 |
Number of Exceedances: | 0 |
Data and Information Type: | TOXICITY TESTING |
Data Used to Assess Water Quality: | None of 8 samples tested with Selenastrum capricornutum were toxic and violated the narrative toxicity 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 | |
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: | Central Valley Regional Water Quality Control Board. Water Quality Control Plan (Basin Plan) for the California Regional Water Quality Control Board - Central Valley Region |
Evaluation Guideline: | Statistically significant difference from control using a t-test with 4-day chronic-style toxicity tests. |
Guideline Reference: | |
Spatial Representation: | All samples were collected from Wadsworth Canal at South Butte Road. |
Temporal Representation: | Samples were collected on the following dates: 27 Jan 2005, 19 March 2005, 3 May 2005, 8 June 2005, 7 July 2005, 2 August 2005, 7 September 2005, and 5 October 2005. |
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): | Methods for Measuring the Acute Toxicity of Effluents and Receiving Waters to Freshwater and Marine Organisms, Fifth Edition. EPA-821-R-02-012 |
| |
LOE ID: | 23217 |
Pollutant: | Toxicity |
LOE Subgroup: | Toxicity |
Matrix: | Water |
Fraction: | Total |
Beneficial Use: | Warm Freshwater Habitat |
Aquatic Life Use: | Warm Freshwater Habitat |
Number of Samples: | 8 |
Number of Exceedances: | 0 |
Data and Information Type: | TOXICITY TESTING |
Data Used to Assess Water Quality: | None of the 8 samples tested with Ceriodaphnia dubia were toxic and violated the narrative toxicity 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 | |
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: | Central Valley Regional Water Quality Control Board. Water Quality Control Plan (Basin Plan) for the California Regional Water Quality Control Board - Central Valley Region |
Evaluation Guideline: | Statistically significant difference from control using a t-test with 4-day acute-style toxicity tests. |
Guideline Reference: | |
Spatial Representation: | All samples were collected from Wadsworth Canal at South Butte Road. |
Temporal Representation: | Samples were collected on the following dates: 27 Jan 2005, 19 March 2005, 3 May 2005, 8 June 2005, 7 July 2005, 2 August 2005, 7 September 2005, and 5 October 2005. |
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): | Methods for Measuring the Acute Toxicity of Effluents and Receiving Waters to Freshwater and Marine Organisms, Fifth Edition. EPA-821-R-02-012 |
| |
LOE ID: | 23218 |
Pollutant: | Toxicity |
LOE Subgroup: | Toxicity |
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: | TOXICITY TESTING |
Data Used to Assess Water Quality: | Surface water samples were tested with Ceriodaphnia dubia and Hyalella azteca.None of the 2 samples tested with Ceriodaphnia dubia were toxic and violated the narrative toxicity objective.One additional sample (15 March 2003) was tested and found to be non-toxic, but was tested outside of holding time and therefore is not included in this line of evidence.The single sample (13 February 2003) tested with Hyalella azteca was not toxic and did not violate the narrative toxicity objective. |
Data Reference: | SWAMP data entered by SWRCB into BDAT database |
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: | Central Valley Regional Water Quality Control Board. Water Quality Control Plan (Basin Plan) for the California Regional Water Quality Control Board - Central Valley Region |
Evaluation Guideline: | Statistically significant difference from control using a t-test with 4-day acute-style toxicity tests (USEPA 2002). |
Guideline Reference: | |
Spatial Representation: | All samples were collected from Wadsworth Canal at Acacia Avenue. |
Temporal Representation: | Samples were collected on the following dates: 3 Jan 2003, 13 February 2003, and 15 March 2003. |
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): |
Lines of Evidence (LOEs) for Decision ID 11524 |
LOE ID: | 23230 |
Pollutant: | Chlorpyrifos |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | Total |
Beneficial Use: | Warm Freshwater Habitat |
Aquatic Life Use: | Warm Freshwater Habitat |
Number of Samples: | 30 |
Number of Exceedances: | 3 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Thirty water samples were collected from Wadsworth Canal from January through March 2004, representing five calculated 4-day average chlorpyrifos concentrations and thirty 1-hour average chlorpyrifos concentrations. Two of the five available calculated 4-day average chlorpyrifos concentrations exceeded the 4-day average chlorpyrifos criterion of 0.015 ug/L more than once every three years. Three of the thirty available 1-hour average chlorpyrifos concentrations exceeded the 1-hour average chlorpyrifos criterion of 0.025 ug/L. |
Data Reference: | Zipped file of Central Valley Waterways Pesticide TMDL monitoring data spreadsheets and reports |
Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in concentrations 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. |
Objective/Criterion Reference: | Central Valley Regional Water Quality Control Board. Water Quality Control Plan (Basin Plan) for the California Regional Water Quality Control Board - Central Valley Region |
Evaluation Guideline: | California Department of Fish and Game Hazard Assessment Chlorpyrifos Criteria: 0.015 ug/L as a 4-day average concentration, and 0.025 ug/L as a 1-hour average concentration, not to be exceeded more than once every three years. |
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 Wadsworth Canal at South Butte Road. |
Temporal Representation: | Samples were collected several times per day during two storm events from January through February 2004 and weekly in March 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: | 23229 |
Pollutant: | Chlorpyrifos |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | Total |
Beneficial Use: | Warm Freshwater Habitat |
Aquatic Life Use: | Warm Freshwater Habitat |
Number of Samples: | 38 |
Number of Exceedances: | 2 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Thirty-eight water samples were collected from Wadsworth Canal from January to February 2003, representing nine calculated 4-day average chlorpyrifos concentrations and thirty-eight 1-hour average chlorpyrifos concentrations. Zero of the nine available 4-day average chlorpyrifos concentrations exceeded the 4-day average chlorpyrifos criterion of 0.015 ug/L. Two of the thirty-eight available 1-hour average chlorpyrifos concentrations exceeded the 1-hour average chlorpyrifos criterion of 0.025 ug/L. |
Data Reference: | Zipped file of Central Valley Waterways Pesticide TMDL monitoring data spreadsheets and reports |
Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in concentrations 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. |
Objective/Criterion Reference: | Central Valley Regional Water Quality Control Board. Water Quality Control Plan (Basin Plan) for the California Regional Water Quality Control Board - Central Valley Region |
Evaluation Guideline: | California Department of Fish and Game Hazard Assessment Chlorpyrifos Criteria: 0.015 ug/L as a 4-day average concentration, and 0.025 ug/L as a 1-hour average concentration, not to be exceeded more than once every three years. |
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 Wadsworth Canal at South Butte Canal, at South Butte Road. |
Temporal Representation: | Samples were collected two to three times per day during two storms in January and February 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 |