| Water Body Name: | Calaveras River, Lower (in Delta Waterways, eastern portion) |
| Water Body ID: | CAR5440000020221114031964 |
| Water Body Type: | River & Stream |
DECISION ID |
152353 |
Region 5 |
Calaveras River, Lower (in Delta Waterways, eastern portion) |
||
| Pollutant: | Chlorpyrifos |
| Final Listing Decision: | Delist from 303(d) list (being addressed by USEPA approved TMDL) |
| Last Listing Cycle's Final Listing Decision: | Delist from 303(d) list (being addressed by USEPA approved TMDL)(2020) |
| Revision Status | Revised |
| Reason for Delisting: | Applicable WQS attained; reason for recovery unspecified |
| TMDL Name: | Delta Diazinon and Chlorpyrifos Project |
| TMDL Project Code: | 185 |
| Date TMDL Approved by USEPA: | 10/10/2007 |
| Impairment from Pollutant or Pollution: | Pollutant |
| Regional Board Conclusion: | This waterbody was split as part of the 2024 cycle Delta Remapping Project. Decisions were reassessed based on the new spatial representation, which resulted in a delisting. This pollutant is being considered for removal from the CWA section 303(d) List under section 4.11 of the Listing Policy. Under this section when all other delisting factors do not result in the delisting of a water segment but information indicates attainment of standards, a water segment shall be evaluated to determine whether the weight of evidence demonstrates that water quality standard is attained. If the weight of evidence indicates attainment, the water segment shall be removed from the CWA section 303(d) List. One line of evidence was used in this assessment. Zero of 23 samples collected after approval of a TMDL exceed the objective for WARM. 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. Delta Diazinon and Chlorpyrifos Project was approved by USEPA in October of 2007. 3. The following information indicates that the water quality standard is attained: Zero of 23 samples collected after approval of a TMDL exceed the objective for WARM. This is sufficient to determine beneficial use support according to the Listing Policy. 3. This process is scientifically defensible and reproducible. |
| 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: | 309700 | ||||
| Pollutant: | Chlorpyrifos | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | Total | ||||
| Beneficial Use: | Warm 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 data collected by the City of Stockton and County of San Joaquin for the lower Calaveras River to determine beneficial use support and results are as follows: 0 of 23 samples exceeded the water quality threshold for chlorpyrifos. Data collected prior to the USEPA approval of a TMDL in October of 2007 was not considered. | ||||
| Data Reference: | Receiving water data for diazinon and chlorpyrifos, 1997-2016 | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | The freshwater criterion continuous concentration for chlorpyrifos to protect aquatic organisms is 0.015 ug/L (4 day average) | ||||
| Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins; Fifth Edition. Revised May 2018 (with approved amendments) | ||||
| Evaluation Guideline: | |||||
| Guideline Reference: | |||||
| Spatial Representation: | Data was collected at one site: Calaveras River at El Dorado Street (CR-46R) | ||||
| Temporal Representation: | Data were collected between 1/4/08 and 4/20/15. | ||||
| Environmental Conditions: | |||||
| QAPP Information: | This data was collected after QAPP requirements were developed, but exempt from the requirements. | ||||
| QAPP Information Reference(s): | This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. | ||||
DECISION ID |
152354 |
Region 5 |
Calaveras River, Lower (in Delta Waterways, eastern portion) |
||
| Pollutant: | Diazinon |
| Final Listing Decision: | Delist from 303(d) list (being addressed by USEPA approved TMDL) |
| Last Listing Cycle's Final Listing Decision: | Delist from 303(d) list (being addressed by USEPA approved TMDL)(2020) |
| Revision Status | Revised |
| Reason for Delisting: | Applicable WQS attained; reason for recovery unspecified |
| TMDL Name: | Delta Diazinon and Chlorpyrifos Project |
| TMDL Project Code: | 185 |
| Date TMDL Approved by USEPA: | 10/10/2007 |
| Impairment from Pollutant or Pollution: | Pollutant |
| Regional Board Conclusion: | This waterbody was split as part of the 2024 cycle Delta Remapping Project. Decisions were reassessed based on the new spatial representation, which resulted in a delisting. This pollutant is being considered for removal from the CWA section 303(d) List under section 4.11 of the Listing Policy. Under this section when all other delisting factors do not result in the delisting of a water segment but information indicates attainment of standards, a water segment shall be evaluated to determine whether the weight of evidence demonstrates that water quality standard is attained. If the weight of evidence indicates attainment, the water segment shall be removed from the CWA section 303(d) List. One line of evidence was used in this assessment. Zero of 16 samples collected after approval of a TMDL exceed the objective for WARM. 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. Delta Diazinon and Chlorpyrifos Project was approved by USEPA in October of 2007. 3. The following information indicates that the water quality standard is attained: Zero of 16 samples collected after approval of a TMDL exceed the objective for WARM. This is sufficient to determine beneficial use support according to the Listing Policy. 3. This process is scientifically defensible and reproducible. |
| 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: | 309701 | ||||
| Pollutant: | Diazinon | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | Total | ||||
| Beneficial Use: | Warm 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 data collected by the City of Stockton and County of San Joaquin for the lower Calaveras River to determine beneficial use support and results are as follows: 0 of 23 samples exceeded the water quality threshold for chlorpyrifos. Data collected prior to the USEPA approval of a TMDL in October of 2007 was not considered. | ||||
| Data Reference: | Receiving water data for diazinon and chlorpyrifos, 1997-2016 | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | The freshwater criterion continuous concentration for diazinon to protect aquatic organisms is 0.1 ug/L (4 day average) | ||||
| Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins; Fifth Edition. Revised May 2018 (with approved amendments) | ||||
| Evaluation Guideline: | |||||
| Guideline Reference: | |||||
| Spatial Representation: | Data was collected at one site: Calaveras River at El Dorado Street (CR-46R) | ||||
| Temporal Representation: | Data were collected between 1/4/08 and 6/11/13. | ||||
| Environmental Conditions: | |||||
| QAPP Information: | This data was collected after QAPP requirements were developed, but exempt from the requirements. | ||||
| QAPP Information Reference(s): | This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. | ||||
DECISION ID |
152347 |
Region 5 |
Calaveras River, Lower (in Delta Waterways, eastern portion) |
||
| Pollutant: | Organic Enrichment/Low Dissolved Oxygen |
| Final Listing Decision: | Do Not Delist from 303(d) list (TMDL required list) |
| Last Listing Cycle's Final Listing Decision: | List on 303(d) list (TMDL required list)(2018) |
| Revision Status | Revised |
| Sources: | A Source Unknown |
| Expected TMDL Completion Date: | 2012 |
| Impairment from Pollutant or Pollution: | Pollutant |
| Regional Board Conclusion: | This waterbody was split as part of the 2024 cycle Delta Remapping Project. Decisions were reassessed based on the new spatial representation. 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: | The decision has not changed. No new data or information was available during the 2024 Integrated Report cycle to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. The Regional Board will update this decision when new data and information become available and are assessed. |
| 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: | 309686 | ||||
| Pollutant: | Organic Enrichment/Low Dissolved Oxygen | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | Not Recorded | ||||
| Beneficial Use: | Cold 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 |
152348 |
Region 5 |
Calaveras River, Lower (in Delta Waterways, eastern portion) |
||
| Pollutant: | Indicator Bacteria |
| Final Listing Decision: | Do Not Delist from 303(d) list (being addressed with USEPA approved TMDL) |
| Last Listing Cycle's Final Listing Decision: | List on 303(d) list (being addressed by USEPA approved TMDL)(2018) |
| Revision Status | Revised |
| Sources: | Urban Runoff/Storm Sewers |
| TMDL Name: | Stockton Area Sloughs and Rivers - Pathogens |
| TMDL Project Code: | 721 |
| Date TMDL Approved by USEPA: | 05/13/2008 |
| Impairment from Pollutant or Pollution: | Pollutant |
| Regional Board Conclusion: | This waterbody was split as part of the 2024 cycle Delta Remapping Project. Decisions were reassessed based on the new spatial representation. The Stockton Urban Waterbodies Pathogen TMDL has been approved by the Central Valley Water Board in 2008 and approved by USEPA on 13 may 2008. 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. The State Water Board’s Water Quality Control Plan for Inland Surface Waters, Enclosed Bays, and Estuaries of California (the “ISWEBE Plan”) contains two bacteria water quality objectives applicable to the REC-1 beneficial use, which were adopted on August 7, 2018. Because the salinity level of this waterbody is equal to or less than 1 part per thousand 95 percent or more of the time, the E. coli bacteria objective applies Therefore, this waterbody is being considered for removal from the CWA section 303(d) List under section 4.3 of the Listing Policy using the E. coli objective. A total of three lines of evidence of E. coli data were evaluated for this waterbody. Of these lines of evidence, all three are based on data collected prior to 2010. Two lines of evidence are based on historic E. coli collected prior to 2010 and one is a placeholder for pathogens based on pre-2006 data. In accordance with section 6.1.5.3 of the Listing Policy, data should be representative of the critical timing that the pollutant is expected to impact the waterbody. Indicator bacteria (total coliform, fecal coliform, E. coli, enterococci) populations may fluctuate substantially on a daily, seasonal, or yearly basis. Lacking constant inputs, they do not persist in the environment for a long period and effects are of relatively short duration. As a result, the historic levels of indicator bacteria in the waterbody may be a poor indicator of current risks to human health, particularly when more recent data are available to sufficiently assess the water quality standard. Unrepresentative data may result in incorrectly placing or not placing a water body segment on the list, which could result in the unnecessary expenditure of public resources or missing a human health problem. The three historic lines of evidence were evaluated pursuant to these considerations and was not used to assess water quality standards attainment because they do not meet the temporal representation requirements of section 6.1.5.3 of the Listing Policy. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against removing this waterbody from the list. The data used satisfy the data quality requirements (section 6.1.4) and data quantity requirements (section 6.1.5) of the Listing Policy. Pursuant to section 3.11 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. No new data or information was available during the 2024 Integrated Report cycle to reassess this water body segment and pollutant. 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: | 309689 | ||||
| Pollutant: | Escherichia coli (E. coli) | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | None | ||||
| Beneficial Use: | Water Contact Recreation | ||||
| Number of Samples: | 74 | ||||
| Number of Exceedances: | 20 | ||||
| Data and Information Type: | PATHOGEN MONITORING | ||||
| Data Used to Assess Water Quality: | Total Maximum Daily Load Report for Pathogens in: Five-Mile Slough, Lower Calaveras River, Mormon Slough, Mosher Slough, Smith Canal and Walker Slough, Final Staff Report, Appendix A, Unpublished Water Quality Data. Though included in the datasets for this LOE, the data described in this section does not include Deltakeeper water samples and results assessed in LOE 7003 (ref2932). Twelve of the 57 daily average results for water samples collected by the Deltakeeper exceeded the E. coli Evaluation Guideline value of 235 MPN/100 ml; the dates (and daily average E. coli MPN values) for the exceedances at "Diverting Canal" was: 21 October 2004 (754 MPN); at "UOP" was: 4 February 2004 (6,867 MPN); at "UOP footbridge" were: 21 April 2001 (1,302 MPN); 20 July 2001 (294 MPN); 8 March 2003 (>24,192 MPN); 11 April 2002 (472 MPN); 20 May 2002 (1,872 MPN); 14 April 2003 (3,609 MPN); and 6 February 2004 (419 MPN); at "DR Dock" were: 27 October 2004 (3,464 MPN); and 7 December 2004 (759 MPN); and at an unspecified location on 11 December 2003 (3,783 MPN) . Eight of the 17 daily average results for water samples collected by the CVRWQCB exceeded the E. coli Evaluation Guideline value of 235 MPN/100 ml; the dates (and daily average E. coli MPN values) for the exceedances at "Deltakeeper" were: 17 November 2005 (240 MPN); 19 December 2005 (850 MPN); and 20 December 2005 (700 MPN); at "McAllen Rd" were: 12 October 2005 (260 MPN); 25 October 2005 (600 MPN); and 17 November 2005 (300 MPN); at "UOP" were: 12 October 2005 (550 MPN); and 19 December 2005 (850 MPN). | ||||
| Data Reference: | Total Maximum Daily Load Report for Pathogens in: Five-Mile Slough, Lower Calaveras River, Mormon Slough, Mosher Slough, Smith Canal and Walker Slough, Final Staff Report, Appendix A, Unpublished Water Quality 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. 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: | E. coli bacteria levels should not exceed 235 MPN/100 mL in any single sample (USEPA E. coli objective). | ||||
| Guideline Reference: | Ambient Water Quality Criteria for Bacteria - 1986. EPA440/5-84-002 | ||||
| Spatial Representation: | Though included in the datasets for this LOE, the data described in this section does not include water samples and results assessed in LOE 7003 (ref2932). Water samples were collected by Deltakeeper from the Calaveras River at "Deltakeeper's Dock", "Diverting Canal", "DR Dock", "UOP", "UOP footbridge", and 1 or more unspecified locations (the latter data was not assessed). Water samples were collected by the CVRWQCB from the Calaveras River at "Deltakeeper", McAllen Rd", and "UOP". | ||||
| Temporal Representation: | Though included in the datasets for this LOE, the data described in this section does not include water samples and results collected by Deltakeeper and assessed as described in LOE 7003 (ref2932). Water samples were collected from the Calaveras River by Deltakeeper at "Diverting Canal" on: 21 October 2004; at "DR Dock" on: 27 March 2003; 8 April 2003; 12, 17,21 and 25 May 2004; 1, 5, 12, 19 and 27 July 2004; 1, 15, 22, and 30 September 2004; 27 October 2004; 7, 13, 20 and 27 December 2004; 5 January 2005; and 26 May 2005; at "UOP" on: 4 February 2004; at "UOP footbridge" on: 12 and 21 April 2001; 30 May 2001; 28 June 2001; 7 and 20 July 2001; 24 and 28 January 2002; 8, 11, 14 and 24 February 2002; 4, 8, 14, 20 and 29 March 2002; 11, 18 and 25 April 2002; 2, 9, 14, 20 and 31 May 2002; 27 March 2003; 14 April 2003; 2, 6 and 9 February 2004; and 26 March 2004; and at unspecified location(s) on: 11 December 2003; 25 April 2000; 2 May 2000; 13 June 2000; and 9 August 2000. Water samples were collected from the Calaveras River by the CVRWQCB at "Deltakeeper" on: 12 and 25 October 2005; 11, 17 and 28 November 2005; and 6, 19 and 20 December 2005; at "McAllen Rd" on: 12 and 25 October 2005; and 17 November 2005; at "UOP" on: 12 and 25 October 2005; 11, 17 and 28 November 2005; and 6, 19 and 20 December 2005. | ||||
| Environmental Conditions: | |||||
| QAPP Information: | Good. Monitoring was conducted by Deltakeeper and by the Central Valley Water Board for the San Joaquin River TMDL for pathogens | ||||
| QAPP Information Reference(s): | |||||
|
|||||
| LOE ID: | 309688 | ||||
| Pollutant: | Escherichia coli (E. coli) | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | None | ||||
| Beneficial Use: | Water Contact Recreation | ||||
| Number of Samples: | 33 | ||||
| Number of Exceedances: | 11 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | DeltaKeeper submitted bacteria data for water samples collected from two locations on the lower Calaveras River (Jennings, 2001). One sampling location is near the mouth of the river and the other is approximately four miles upstream. A total of 26 samples collected at the upstream location over during 10 months in 2000-2001, and a total of 11 samples collected at the downstream location during seven months in 2000, were analyzed. Geometric means of the bacteria counts have been calculated using the data submitted by DeltaKeeper. The geometric mean for E. coli is 322 MPN per 100 ml for samples collected at the upstream location (exceeding the USEPA criterion of 126 MPN per 100 ml). The geometric mean for E. coli for samples collected at the downstream location is 76 MPN per 100 ml. One (collected on 24 May 2000) of eleven water samples collected from the downstream site exceeded the USEPA single sample criterion of 235 MPN per 100 ml. Twenty-four water samples collected from the upstream site (at UOP footbridge) yielded 22 daily average MPN E. coli concentrations. Ten (collected on 28 August 2000; 11 October 2000; 30 October 2000; 8, 11, and 24 January 2001; 10 and 11 February 2001; and 5 and 26 March 2001 ) of the 22 water samples collected from the upstream site exceeded the USEPA single sample criterion of 235 MPN per 100 ml. | ||||
| Data Reference: | DeltaKeeper bacteria data collected from Lower Calaveras River and others | ||||
| 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. (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: | The California Department of Health Services (CDHS) has adopted regulations for recreational waters and beaches for single samples of total coliform bacteria of 10,000 Most Probable Number (MPN) per 100 milliliters and of 1,000 MPN per 100 ml for 30-day log mean of sample levels (Title 17 California Code of Regulation section 7958). CDHS has also published draft guidelines that include limits for single samples of E. coli of 235 MPN per 100 milliliters (CDHS, July 2000 http://www.dhs.ca.gov/ps/ddwem/beaches/freshwater.htm). USEPA guidelines for bacteria contained in Ambient Water Quality Criteria for Bacteria (USEPA, 1986a) state ¿Based on a statistically sufficient number of samples (generally not less than 5 samples equally spaced over a 30-day period), the geometric mean of the indicated bacterial densities should not exceed one or the other of the following: E. coli 126 MPN per 100 ml; or Enterococci 33 MPN per 100 ml.¿ A methodology for determining exceedances based on single samples is also included in the standards. | ||||
| Guideline Reference: | Ambient Water Quality Criteria for Bacteria - 1986. EPA440/5-84-002 | ||||
| Spatial Representation: | The original listing info in the Central Valley Water Board's 2002 303(d) list report indicated that the impaired portion of the lower 5 miles of the Calaveras River, within the Stockton urban area, have similar land use patterns and were recommended for listing as impaired due to pathogen contamination. Water samples were collected from two loations - near the mouth of the Calaveras River (Calaveras River at UOP footbridge), and approximately 4 miles upstream (Calaveras River at Deltakeeper Dock). | ||||
| Temporal Representation: | Twenty-four water samples were collected at the upstream location (at UOP footbridge) on 7, 14, 22, and 28 August 2000; 20 September 2000; 4, 11, 19, and 30 October 2000; 11, 21, and 28 November 2001; 6 December 2000, 8, 11, and 24 January 2001; 10 and 11 February 2001; and 5, 14, 20 and 26 March 2001. Eleven water samples were collected at the downstream location (at Deltakeeper Doc) on 12, 26 and 27 April 2000; 10 and 24 May 2000; 1 and 21 June 2000; 28 July 2000; 18 August 2000; 12 September 2000; and 3 October 2000. | ||||
| Environmental Conditions: | tidal phase information was reported for most sampling dates | ||||
| QAPP Information: | Assumed to be good, since the samples were collected by the Deltakeeper organization. | ||||
| QAPP Information Reference(s): | |||||
|
|||||
| LOE ID: | 309687 | ||||
| Pollutant: | Pathogens | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | Not Recorded | ||||
| Beneficial Use: | Water Contact Recreation | ||||
| 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 |
152352 |
Region 5 |
Calaveras River, Lower (in Delta Waterways, eastern portion) |
||
| Pollutant: | Mercury |
| Final Listing Decision: | Do Not Delist from 303(d) list (being addressed with USEPA approved TMDL) |
| Last Listing Cycle's Final Listing Decision: | Do Not Delist from 303(d) list (being addressed with USEPA approved TMDL)(2024) |
| Revision Status | Revised |
| Sources: | Agricultural Return Flows | Atmospheric Deposition | Highway/Road/Bridge Runoff | Industrial Point Sources | Municipal Point Sources | Natural Sources | Resource Extraction | See TMDL documentation | Urban Runoff/Storm Sewers |
| TMDL Name: | Delta Methylmercury TMDL Project |
| TMDL Project Code: | 128 |
| Date TMDL Approved by USEPA: | 10/20/2011 |
| Impairment from Pollutant or Pollution: | Pollutant |
| Regional Board Conclusion: | This waterbody was split as part of the 2024 cycle Delta Remapping Project. Decisions were reassessed based on the new spatial representation. This pollutant is being considered for removal on the CWA section 303(d) List under sections 2.2 and 4.1 of the Listing Policy. Under 4.1 of the Policy, a minimum of one line of evidence is needed to assess listing status. One line of evidence is available in the administrative record to assess this pollutant for Commercial or recreational collection of fish, shellfish, or organisms (COMM). Nine of the 12 samples exceed the criterion for COMM. 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. There is sufficient justification to place it in the Being Addressed portion of the CWA 303(d) List because a TMDL has been completed and approved by RWQCB and USEPA, and is expected to result in attainment of the standard. 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 the 12 samples exceed the criterion for COMM and these exceed the allowable frequency listed in Table 4.1 of the Listing Policy. 4. The Delta Methylmercury TMDL was approved by USEPA on 10/20/2011. 5. Pursuant to section 4.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
| Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be removed from the section 303(d) list because applicable water quality standards for the pollutant are being exceeded. |
| State Board Review of Regional Board Conclusion and Recommendation: | |
| State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
| LOE ID: | 309699 | ||||
| Pollutant: | Mercury | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | Total | ||||
| Beneficial Use: | Commercial or recreational collection of fish, shellfish, or organisms | ||||
| Number of Samples: | 12 | ||||
| Number of Exceedances: | 9 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | A total of 15 water samples were collected at one location from the lower Calaveras River representing twelve 30-day average samples. Nine out of the twelve 30-day average samples exceeded the USEPA (CTR) mercury-based numeric criterion for human health. The total recoverable mercury concentrations in water ranged from 2.5 ng/l to 2200 ng/l with an average of 760 ng/l for the twelve 30-day average samples. | ||||
| Data Reference: | City of Stockton NPDES Municipal Stormwater Program Report of Waste Discharge | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | The USEPA California Toxics Rule Criteria (CTR) Inland Surface Waters for the protection of human health for the consumption of both water and fish that live in the water is 50 ng/L (30-day average) for total recoverable mercury. | ||||
| 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 one location on the lower Calaveras River at North El Dorado Street. | ||||
| Temporal Representation: | Water samples were collected during fifteen sampling events from 4/12/2003 to 6/5/2006. | ||||
| Environmental Conditions: | Samples represented a range of flow conditions including wet and dry seasons. | ||||
| QAPP Information: | Analysis done by labs with approved QAQC programs, in accordance with stormwater permit requirements. | ||||
| QAPP Information Reference(s): | |||||
DECISION ID |
152357 |
Region 5 |
Calaveras River, Lower (in Delta Waterways, eastern portion) |
||
| Pollutant: | Alkalinity as CaCO3 |
| 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)(2024) |
| Revision Status | Revised |
| Impairment from Pollutant or Pollution: | Pollutant |
| Regional Board Conclusion: | This waterbody was split as part of the 2024 cycle Delta Remapping Project. Decisions were reassessed based on the new spatial representation. 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. One of the 97 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. One of the 97 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: | |
|
|||||
| LOE ID: | 309707 | ||||
| Pollutant: | Alkalinity as CaCO3 | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | Total | ||||
| Beneficial Use: | Cold Freshwater Habitat | ||||
| Number of Samples: | 4 | ||||
| Number of Exceedances: | 0 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | Water Board staff assessed STORET data for Calaveras River, Lower (from Stockton Diverting Canal to the San Joaquin River; partly in Delta Waterways, eastern portion) to determine beneficial use support and results are as follows: 0 of 4 samples exceeded the water quality threshold for Alkalinity as CaCO3. | ||||
| Data Reference: | WQX data for the 2020/2022 integrated report in Region 5. | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | Waters shall not contain chemical constituents 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; Fifth Edition. Revised May 2018 (with approved amendments) | ||||
| Evaluation Guideline: | Alkalinity as CaCO3 levels were assessed for the protection of freshwater aquatic life by comparison to the Evaluation Guideline value of 20,000 ug/L (4 day average)(National Recommended Water Quality Criteria, 2009). | ||||
| Guideline Reference: | National Recommended Water Quality Criteria. United States Environmental Protection Agency. Office of Water. Office of Science and Technology | ||||
| Spatial Representation: | The samples were collected at 1 monitoring site (CALWR_WQX-B9D75851208) | ||||
| Temporal Representation: | The samples were collected between the dates of 2010-09-08 and 2010-11-02 | ||||
| Environmental Conditions: | |||||
| QAPP Information: | STORET | ||||
| QAPP Information Reference(s): | This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. | ||||
|
|||||
| LOE ID: | 309706 | ||||
| Pollutant: | Alkalinity as CaCO3 | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | Total | ||||
| Beneficial Use: | Cold Freshwater Habitat | ||||
| Number of Samples: | 93 | ||||
| Number of Exceedances: | 1 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | Water Board staff assessed STORET data for Calaveras River, Lower (from Stockton Diverting Canal to the San Joaquin River; partly in Delta Waterways, eastern portion) to determine beneficial use support and results are as follows: 1 of 93 samples exceeded the water quality threshold for Alkalinity as CaCO3. | ||||
| Data Reference: | WQX data for the 2020/2022 integrated report in Region 5. | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | Waters shall not contain chemical constituents 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; Fifth Edition. Revised May 2018 (with approved amendments) | ||||
| Evaluation Guideline: | Alkalinity as CaCO3 levels were assessed for the protection of freshwater aquatic life by comparison to the Evaluation Guideline value of 20,000 ug/L (4 day average)(National Recommended Water Quality Criteria, 2009). | ||||
| Guideline Reference: | National Recommended Water Quality Criteria. United States Environmental Protection Agency. Office of Water. Office of Science and Technology | ||||
| Spatial Representation: | The samples were collected at 1 monitoring site (CALWR_WQX-B9D75891188) | ||||
| Temporal Representation: | The samples were collected between the dates of 2010-12-07 and 2016-04-18 | ||||
| Environmental Conditions: | |||||
| QAPP Information: | STORET | ||||
| QAPP Information Reference(s): | This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. | ||||
DECISION ID |
152356 |
Region 5 |
Calaveras River, Lower (in Delta Waterways, eastern portion) |
||
| 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)(2024) |
| Revision Status | Revised |
| Impairment from Pollutant or Pollution: | Pollutant |
| Regional Board Conclusion: | This waterbody was split as part of the 2024 cycle Delta Remapping Project. Decisions were reassessed based on the new spatial representation. This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Zero samples exceeded the objectives, guidelines, or criteria for beneficial uses applicable to this water segment-pollutant combination, which is less than the minimum number of exceedances needed to place the water segment on the section CWA section 303(d) List for toxicants (Table 3.1 of the Listing Policy). The data used satisfies the data quality requirements (section 6.1.4) and data quantity requirements (section 6.1.5) of the Listing Policy. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. 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. |
| 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: | |
|
|||||
| LOE ID: | 309704 | ||||
| Pollutant: | Boron | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | Dissolved | ||||
| Beneficial Use: | Agricultural Supply | ||||
| Number of Samples: | 93 | ||||
| Number of Exceedances: | 0 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | Water Board staff assessed STORET data for Calaveras River, Lower (from Stockton Diverting Canal to the San Joaquin River; partly in Delta Waterways, eastern portion) to determine beneficial use support and results are as follows: 0 of 93 samples exceeded the water quality threshold for Boron. | ||||
| Data Reference: | WQX data for the 2020/2022 integrated report in Region 5. | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | Waters shall not contain chemical constituents 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; Fifth Edition. Revised May 2018 (with approved amendments) | ||||
| Evaluation Guideline: | Water Quality for Agriculture, published by the Food and Agriculture Organization of the United Nations in 1985, contains criteria protective of various agricultural uses of water, including irrigation of various types of crops and stock watering. At or below the limits presented in the Water Quality Goals tables, agricultural uses of water should not be limited. These criteria were used to translate narrative water quality objectives for chemical constituents that prohibit chemicals in concentrations that would impair agricultural uses of water. The criteria for boron is 700 ug/L (0.7 mg/L). | ||||
| Guideline Reference: | Water Quality for Agriculture, Food and Agriculture Organization of the United Nations - Irrigation and Drainage Paper No. 29, Rev 1, Rome (1985) | ||||
| Spatial Representation: | The samples were collected at 1 monitoring site (CALWR_WQX-B9D75891188) | ||||
| Temporal Representation: | The samples were collected between the dates of 2010-12-07 and 2016-04-18 | ||||
| Environmental Conditions: | |||||
| QAPP Information: | STORET | ||||
| QAPP Information Reference(s): | This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. | ||||
|
|||||
| LOE ID: | 309705 | ||||
| Pollutant: | Boron | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | Dissolved | ||||
| Beneficial Use: | Agricultural Supply | ||||
| 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 STORET data for Calaveras River, Lower (from Stockton Diverting Canal to the San Joaquin River; partly in Delta Waterways, eastern portion) to determine beneficial use support and results are as follows: 0 of 4 samples exceeded the water quality threshold for Boron. | ||||
| Data Reference: | WQX data for the 2020/2022 integrated report in Region 5. | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | Waters shall not contain chemical constituents 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; Fifth Edition. Revised May 2018 (with approved amendments) | ||||
| Evaluation Guideline: | Water Quality for Agriculture, published by the Food and Agriculture Organization of the United Nations in 1985, contains criteria protective of various agricultural uses of water, including irrigation of various types of crops and stock watering. At or below the limits presented in the Water Quality Goals tables, agricultural uses of water should not be limited. These criteria were used to translate narrative water quality objectives for chemical constituents that prohibit chemicals in concentrations that would impair agricultural uses of water. The criteria for boron is 700 ug/L (0.7 mg/L). | ||||
| Guideline Reference: | Water Quality for Agriculture, Food and Agriculture Organization of the United Nations - Irrigation and Drainage Paper No. 29, Rev 1, Rome (1985) | ||||
| Spatial Representation: | The samples were collected at 1 monitoring site (CALWR_WQX-B9D75851208) | ||||
| Temporal Representation: | The samples were collected between the dates of 2010-09-08 and 2010-11-02 | ||||
| Environmental Conditions: | |||||
| QAPP Information: | STORET | ||||
| QAPP Information Reference(s): | This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. | ||||
DECISION ID |
152358 |
Region 5 |
Calaveras River, Lower (in Delta Waterways, eastern portion) |
||
| 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)(2024) |
| Revision Status | Revised |
| Impairment from Pollutant or Pollution: | Pollutant |
| Regional Board Conclusion: | This waterbody was split as part of the 2024 cycle Delta Remapping Project. Decisions were reassessed based on the new spatial representation. 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. Ten of the 97 water samples, reported as a dissolved concentration, exceed the 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. 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. Ten of the 97 water samples, reported as a dissolved concentration, exceed the objective for MUN 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: | |
|
|||||
| LOE ID: | 309709 | ||||
| Pollutant: | Chloride | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | Dissolved | ||||
| Beneficial Use: | Municipal & Domestic Supply | ||||
| 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 STORET data for Calaveras River, Lower (from Stockton Diverting Canal to the San Joaquin River; partly in Delta Waterways, eastern portion) to determine beneficial use support and results are as follows: 0 of 4 samples exceeded the water quality threshold for Chloride. | ||||
| Data Reference: | WQX data for the 2020/2022 integrated report in Region 5. | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | The California Secondary Maximum Contaminant Level for chloride incorporated by reference in the Water Quality Control Plan for the Sacramento and San Joaquin River Basins is 250 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; Fifth Edition. Revised May 2018 (with approved amendments) | ||||
| Evaluation Guideline: | |||||
| Guideline Reference: | |||||
| Spatial Representation: | The samples were collected at 1 monitoring site (CALWR_WQX-B9D75851208) | ||||
| Temporal Representation: | The samples were collected between the dates of 2010-09-08 and 2010-11-02 | ||||
| Environmental Conditions: | |||||
| QAPP Information: | STORET | ||||
| QAPP Information Reference(s): | This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. | ||||
|
|||||
| LOE ID: | 309708 | ||||
| Pollutant: | Chloride | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | Dissolved | ||||
| Beneficial Use: | Municipal & Domestic Supply | ||||
| Number of Samples: | 93 | ||||
| Number of Exceedances: | 10 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | Water Board staff assessed STORET data for Calaveras River, Lower (from Stockton Diverting Canal to the San Joaquin River; partly in Delta Waterways, eastern portion) to determine beneficial use support and results are as follows: 10 of 93 samples exceeded the water quality threshold for Chloride. | ||||
| Data Reference: | WQX data for the 2020/2022 integrated report in Region 5. | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | The California Secondary Maximum Contaminant Level for chloride incorporated by reference in the Water Quality Control Plan for the Sacramento and San Joaquin River Basins is 250 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; Fifth Edition. Revised May 2018 (with approved amendments) | ||||
| Evaluation Guideline: | |||||
| Guideline Reference: | |||||
| Spatial Representation: | The samples were collected at 1 monitoring site (CALWR_WQX-B9D75891188) | ||||
| Temporal Representation: | The samples were collected between the dates of 2010-12-07 and 2016-04-18 | ||||
| Environmental Conditions: | |||||
| QAPP Information: | STORET | ||||
| QAPP Information Reference(s): | This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. | ||||
DECISION ID |
152360 |
Region 5 |
Calaveras River, Lower (in Delta Waterways, eastern portion) |
||
| Pollutant: | Sulfates |
| Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
| Last Listing Cycle's Final Listing Decision: | Do Not List on 303(d) list (TMDL required list)(2024) |
| Revision Status | Revised |
| Impairment from Pollutant or Pollution: | Pollutant |
| Regional Board Conclusion: | This waterbody was split as part of the 2024 cycle Delta Remapping Project. Decisions were reassessed based on the new spatial representation. This pollutant is being considered for placement on the CWA section 303(d) List under section 3.2 of the Listing Policy. Zero samples exceeded the objectives, guidelines, or criteria for beneficial uses applicable to this water segment-pollutant combination, which is less than the minimum number of exceedances needed to place the water segment on the section CWA section 303(d) List for conventional or other pollutants (Table 3.2 of the Listing Policy). The data used satisfies the data quality requirements (section 6.1.4) and data quantity requirements (section 6.1.5) of the Listing Policy. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. 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. |
| 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: | |
|
|||||
| LOE ID: | 309717 | ||||
| Pollutant: | Sulfates | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | Dissolved | ||||
| Beneficial Use: | Municipal & Domestic Supply | ||||
| Number of Samples: | 93 | ||||
| Number of Exceedances: | 0 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | Water Board staff assessed STORET data for Calaveras River, Lower (from Stockton Diverting Canal to the San Joaquin River; partly in Delta Waterways, eastern portion) to determine beneficial use support and results are as follows: 0 of 93 samples exceeded the water quality threshold for Sulfate. | ||||
| Data Reference: | WQX data for the 2020/2022 integrated report in Region 5. | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | The California Secondary Maximum Contaminant Level for sulfate incorporated by reference in the Water Quality Control Plan for the Sacramento and San Joaquin River Basins is 250 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; Fifth Edition. Revised May 2018 (with approved amendments) | ||||
| Evaluation Guideline: | |||||
| Guideline Reference: | |||||
| Spatial Representation: | The samples were collected at 1 monitoring site (CALWR_WQX-B9D75891188) | ||||
| Temporal Representation: | The samples were collected between the dates of 2010-12-07 and 2016-04-18 | ||||
| Environmental Conditions: | |||||
| QAPP Information: | STORET | ||||
| QAPP Information Reference(s): | This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. | ||||
|
|||||
| LOE ID: | 309716 | ||||
| Pollutant: | Sulfates | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | Dissolved | ||||
| Beneficial Use: | Municipal & Domestic Supply | ||||
| 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 STORET data for Calaveras River, Lower (from Stockton Diverting Canal to the San Joaquin River; partly in Delta Waterways, eastern portion) to determine beneficial use support and results are as follows: 0 of 4 samples exceeded the water quality threshold for Sulfate. | ||||
| Data Reference: | WQX data for the 2020/2022 integrated report in Region 5. | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | The California Secondary Maximum Contaminant Level for sulfate incorporated by reference in the Water Quality Control Plan for the Sacramento and San Joaquin River Basins is 250 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; Fifth Edition. Revised May 2018 (with approved amendments) | ||||
| Evaluation Guideline: | |||||
| Guideline Reference: | |||||
| Spatial Representation: | The samples were collected at 1 monitoring site (CALWR_WQX-B9D75851208) | ||||
| Temporal Representation: | The samples were collected between the dates of 2010-09-08 and 2010-11-02 | ||||
| Environmental Conditions: | |||||
| QAPP Information: | STORET | ||||
| QAPP Information Reference(s): | This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. | ||||
DECISION ID |
152361 |
Region 5 |
Calaveras River, Lower (in Delta Waterways, eastern portion) |
||
| Pollutant: | Temperature, water |
| Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
| Last Listing Cycle's Final Listing Decision: | Do Not List on 303(d) list (TMDL required list)(2024) |
| Revision Status | Revised |
| Impairment from Pollutant or Pollution: | Pollutant |
| Regional Board Conclusion: | This waterbody was split as part of the 2024 cycle Delta Remapping Project. Decisions were reassessed based on the new spatial representation. 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. Six lines of evidence are available in the administrative record to assess this pollutant. Pursuant to section 6.1.5.9 of the Listing Policy, this assessment utilized the upper limit of the optimal temperature range for rainbow trout for growth and completion of most life stages to interpret the narrative water quality objective for temperature. 37 of 95 samples exceeded the evaluation guideline. However, the available data are insufficient to satisfy the Listing Policy requirements for spatial and temporal representation (sections 6.1.5.2 and 6.1.5.3). The surface water grab samples collected did not provide sufficient temporal and spatial representation to determine if temperature conditions experienced by aquatic life were within the optimal temperature range throughout the entire water column or the length of time temperature conditions may have exceeded the optimal temperature range. Available information for this waterbody-pollutant combination is insufficient to determine whether the aquatic beneficial use is supported. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available for this Integrated Report cycle indicating that standards are not met. However, the exceedances of the evaluation guideline indicate that beneficial uses may be threatened. This decision will be reevaluated in the next Integrated Report cycle as more data and information become available. Additional data and information may include information demonstrating that sample location(s) are representative of conditions throughout the waterbody, data from additional sampling locations, continuous monitoring data collected in the waterbody, waterbody-specific information on sensitive resident species, their life stage time frames, and the appropriate temperature thresholds necessary to support each life stage. |
| 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: | |
|
|||||
| LOE ID: | 309722 | ||||
| Pollutant: | Temperature, water | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | Not Recorded | ||||
| Beneficial Use: | Cold Freshwater Habitat | ||||
| Number of Samples: | 4 | ||||
| Number of Exceedances: | 2 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | Water Board staff assessed STORET data for Calaveras River, Lower (from Stockton Diverting Canal to the San Joaquin River; partly in Delta Waterways, eastern portion) to determine beneficial use support and results are as follows: 2 of 4 samples exceeded the water quality threshold for Temperature. | ||||
| Data Reference: | WQX data for the 2020/2022 integrated report in Region 5. | ||||
| 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; Fifth Edition. Revised May 2018 (with approved amendments) | ||||
| 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 | ||||
| Spatial Representation: | The samples were collected at 1 monitoring site (CALWR_WQX-B9D75851208) | ||||
| Temporal Representation: | The samples were collected between the dates of 2010-09-08 and 2010-11-02 | ||||
| Environmental Conditions: | |||||
| QAPP Information: | STORET | ||||
| QAPP Information Reference(s): | This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. | ||||
|
|||||
| LOE ID: | 309723 | ||||
| Pollutant: | Temperature, water | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | Not Recorded | ||||
| Beneficial Use: | Cold Freshwater Habitat | ||||
| Number of Samples: | 91 | ||||
| Number of Exceedances: | 35 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | Water Board staff assessed STORET data for Calaveras River, Lower (from Stockton Diverting Canal to the San Joaquin River; partly in Delta Waterways, eastern portion) to determine beneficial use support and results are as follows: 35 of 91 samples exceeded the water quality threshold for Temperature. | ||||
| Data Reference: | WQX data for the 2020/2022 integrated report in Region 5. | ||||
| 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; Fifth Edition. Revised May 2018 (with approved amendments) | ||||
| 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 | ||||
| Spatial Representation: | The samples were collected at 1 monitoring site (CALWR_WQX-B9D75891188) | ||||
| Temporal Representation: | The samples were collected between the dates of 2010-12-07 and 2016-04-06 | ||||
| Environmental Conditions: | |||||
| QAPP Information: | STORET | ||||
| QAPP Information Reference(s): | This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. | ||||
|
|||||
| LOE ID: | 309721 | ||||
| Pollutant: | Temperature, water | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | Not Recorded | ||||
| Beneficial Use: | Fish Spawning | ||||
| Number of Samples: | 91 | ||||
| Number of Exceedances: | 35 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | Water Board staff assessed STORET data for Calaveras River, Lower (from Stockton Diverting Canal to the San Joaquin River; partly in Delta Waterways, eastern portion) to determine beneficial use support and results are as follows: 35 of 91 samples exceeded the water quality threshold for Temperature. | ||||
| Data Reference: | WQX data for the 2020/2022 integrated report in Region 5. | ||||
| 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; Fifth Edition. Revised May 2018 (with approved amendments) | ||||
| 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 | ||||
| Spatial Representation: | The samples were collected at 1 monitoring site (CALWR_WQX-B9D75891188) | ||||
| Temporal Representation: | The samples were collected between the dates of 2010-12-07 and 2016-04-06 | ||||
| Environmental Conditions: | |||||
| QAPP Information: | STORET | ||||
| QAPP Information Reference(s): | This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. | ||||
|
|||||
| LOE ID: | 309720 | ||||
| Pollutant: | Temperature, water | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | Not Recorded | ||||
| Beneficial Use: | Fish Spawning | ||||
| Number of Samples: | 4 | ||||
| Number of Exceedances: | 2 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | Water Board staff assessed STORET data for Calaveras River, Lower (from Stockton Diverting Canal to the San Joaquin River; partly in Delta Waterways, eastern portion) to determine beneficial use support and results are as follows: 2 of 4 samples exceeded the water quality threshold for Temperature. | ||||
| Data Reference: | WQX data for the 2020/2022 integrated report in Region 5. | ||||
| 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; Fifth Edition. Revised May 2018 (with approved amendments) | ||||
| 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 | ||||
| Spatial Representation: | The samples were collected at 1 monitoring site (CALWR_WQX-B9D75851208) | ||||
| Temporal Representation: | The samples were collected between the dates of 2010-09-08 and 2010-11-02 | ||||
| Environmental Conditions: | |||||
| QAPP Information: | STORET | ||||
| QAPP Information Reference(s): | This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. | ||||
|
|||||
| LOE ID: | 309719 | ||||
| Pollutant: | Temperature, water | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | Not Recorded | ||||
| Beneficial Use: | Fish Migration | ||||
| Number of Samples: | 4 | ||||
| Number of Exceedances: | 2 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | Water Board staff assessed STORET data for Calaveras River, Lower (from Stockton Diverting Canal to the San Joaquin River; partly in Delta Waterways, eastern portion) to determine beneficial use support and results are as follows: 2 of 4 samples exceeded the water quality threshold for Temperature. | ||||
| Data Reference: | WQX data for the 2020/2022 integrated report in Region 5. | ||||
| 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; Fifth Edition. Revised May 2018 (with approved amendments) | ||||
| 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 | ||||
| Spatial Representation: | The samples were collected at 1 monitoring site (CALWR_WQX-B9D75851208) | ||||
| Temporal Representation: | The samples were collected between the dates of 2010-09-08 and 2010-11-02 | ||||
| Environmental Conditions: | |||||
| QAPP Information: | STORET | ||||
| QAPP Information Reference(s): | This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. | ||||
|
|||||
| LOE ID: | 309718 | ||||
| Pollutant: | Temperature, water | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | Not Recorded | ||||
| Beneficial Use: | Fish Migration | ||||
| Number of Samples: | 91 | ||||
| Number of Exceedances: | 35 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | Water Board staff assessed STORET data for Calaveras River, Lower (from Stockton Diverting Canal to the San Joaquin River; partly in Delta Waterways, eastern portion) to determine beneficial use support and results are as follows: 35 of 91 samples exceeded the water quality threshold for Temperature. | ||||
| Data Reference: | WQX data for the 2020/2022 integrated report in Region 5. | ||||
| 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; Fifth Edition. Revised May 2018 (with approved amendments) | ||||
| 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 | ||||
| Spatial Representation: | The samples were collected at 1 monitoring site (CALWR_WQX-B9D75891188) | ||||
| Temporal Representation: | The samples were collected between the dates of 2010-12-07 and 2016-04-06 | ||||
| Environmental Conditions: | |||||
| QAPP Information: | STORET | ||||
| QAPP Information Reference(s): | This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. | ||||
DECISION ID |
152355 |
Region 5 |
Calaveras River, Lower (in Delta Waterways, eastern portion) |
||
| 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)(2024) |
| Revision Status | Revised |
| Impairment from Pollutant or Pollution: | Pollutant |
| Regional Board Conclusion: | This waterbody was split as part of the 2024 cycle Delta Remapping Project. Decisions were reassessed based on the new spatial representation. 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 for Municipal and Domestic Supply (MUN). Fourteen of the 97 samples, reported as a dissolved fraction, exceed the objective for MUN. Zero of the 97 samples, with the fraction not reported, exceed the 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. 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. Fourteen of the 97 samples, reported as a dissolved fraction, exceed the objective for MUN. Zero of the 97 samples, with the fraction not reported, exceed the objective for MUN. 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: | 309702 | ||||
| Pollutant: | Total Dissolved Solids | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | Not Recorded | ||||
| Beneficial Use: | Municipal & Domestic Supply | ||||
| Number of Samples: | 93 | ||||
| Number of Exceedances: | 0 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | Water Board staff assessed STORET data for Calaveras River, Lower (from Stockton Diverting Canal to the San Joaquin River; partly in Delta Waterways, eastern portion) to determine beneficial use support and results are as follows: 0 of 93 samples exceeded the water quality threshold for Total Dissolved Solids. | ||||
| Data Reference: | WQX data for the 2020/2022 integrated report in Region 5. | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | The California Secondary Maximum Contaminant Level for total dissolved solids incorporated by reference in the Water Quality Control Plan for the Sacramento and San Joaquin River Basins 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; Fifth Edition. Revised May 2018 (with approved amendments) | ||||
| Evaluation Guideline: | |||||
| Guideline Reference: | |||||
| Spatial Representation: | The samples were collected at 1 monitoring site (CALWR_WQX-B9D75891188) | ||||
| Temporal Representation: | The samples were collected between the dates of 2010-12-07 and 2016-04-18 | ||||
| Environmental Conditions: | |||||
| QAPP Information: | STORET | ||||
| QAPP Information Reference(s): | This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. | ||||
|
|||||
| LOE ID: | 309703 | ||||
| Pollutant: | Total Dissolved Solids | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | Dissolved | ||||
| Beneficial Use: | Municipal & Domestic Supply | ||||
| Number of Samples: | 93 | ||||
| Number of Exceedances: | 14 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | Water Board staff assessed STORET data for Calaveras River, Lower (from Stockton Diverting Canal to the San Joaquin River; partly in Delta Waterways, eastern portion) to determine beneficial use support and results are as follows: 14 of 93 samples exceeded the water quality threshold for Total Dissolved Solids. | ||||
| Data Reference: | WQX data for the 2020/2022 integrated report in Region 5. | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | The California Secondary Maximum Contaminant Level for total dissolved solids incorporated by reference in the Water Quality Control Plan for the Sacramento and San Joaquin River Basins 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; Fifth Edition. Revised May 2018 (with approved amendments) | ||||
| Evaluation Guideline: | |||||
| Guideline Reference: | |||||
| Spatial Representation: | The samples were collected at 1 monitoring site (CALWR_WQX-B9D75891188) | ||||
| Temporal Representation: | The samples were collected between the dates of 2010-12-07 and 2016-04-18 | ||||
| Environmental Conditions: | |||||
| QAPP Information: | STORET | ||||
| QAPP Information Reference(s): | This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. | ||||
|
|||||
| LOE ID: | 309724 | ||||
| Pollutant: | Total Dissolved Solids | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | Dissolved | ||||
| Beneficial Use: | Municipal & Domestic Supply | ||||
| 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 STORET data for Calaveras River, Lower (from Stockton Diverting Canal to the San Joaquin River; partly in Delta Waterways, eastern portion) to determine beneficial use support and results are as follows: 0 of 4 samples exceeded the water quality threshold for Total Dissolved Solids. | ||||
| Data Reference: | WQX data for the 2020/2022 integrated report in Region 5. | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | The California Secondary Maximum Contaminant Level for total dissolved solids incorporated by reference in the Water Quality Control Plan for the Sacramento and San Joaquin River Basins 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; Fifth Edition. Revised May 2018 (with approved amendments) | ||||
| Evaluation Guideline: | |||||
| Guideline Reference: | |||||
| Spatial Representation: | The samples were collected at 1 monitoring site (CALWR_WQX-B9D75851208) | ||||
| Temporal Representation: | The samples were collected between the dates of 2010-09-08 and 2010-11-02 | ||||
| Environmental Conditions: | |||||
| QAPP Information: | STORET | ||||
| QAPP Information Reference(s): | This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. | ||||
|
|||||
| LOE ID: | 309725 | ||||
| Pollutant: | Total Dissolved Solids | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | Not Recorded | ||||
| Beneficial Use: | Municipal & Domestic Supply | ||||
| 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 STORET data for Calaveras River, Lower (from Stockton Diverting Canal to the San Joaquin River; partly in Delta Waterways, eastern portion) to determine beneficial use support and results are as follows: 0 of 4 samples exceeded the water quality threshold for Total Dissolved Solids. | ||||
| Data Reference: | WQX data for the 2020/2022 integrated report in Region 5. | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | The California Secondary Maximum Contaminant Level for total dissolved solids incorporated by reference in the Water Quality Control Plan for the Sacramento and San Joaquin River Basins 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; Fifth Edition. Revised May 2018 (with approved amendments) | ||||
| Evaluation Guideline: | |||||
| Guideline Reference: | |||||
| Spatial Representation: | The samples were collected at 1 monitoring site (CALWR_WQX-B9D75851208) | ||||
| Temporal Representation: | The samples were collected between the dates of 2010-09-08 and 2010-11-02 | ||||
| Environmental Conditions: | |||||
| QAPP Information: | STORET | ||||
| QAPP Information Reference(s): | This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. | ||||
DECISION ID |
152359 |
Region 5 |
Calaveras River, Lower (in Delta Waterways, eastern portion) |
||
| 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)(2024) |
| Revision Status | Revised |
| Impairment from Pollutant or Pollution: | Pollutant |
| Regional Board Conclusion: | This waterbody was split as part of the 2024 cycle Delta Remapping Project. Decisions were reassessed based on the new spatial representation. 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. Six lines of evidence are available in the administrative record to assess this pollutant. Four of the 97 samples each exceed the objectives for COLD, REC-1, and REC-2. 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 97 samples each exceed the objectives for COLD, REC-1, and REC-2 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: | |
|
|||||
| LOE ID: | 309715 | ||||
| Pollutant: | pH | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | None | ||||
| Beneficial Use: | Water Contact Recreation | ||||
| Number of Samples: | 93 | ||||
| Number of Exceedances: | 4 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | Water Board staff assessed STORET data for Calaveras River, Lower (from Stockton Diverting Canal to the San Joaquin River; partly in Delta Waterways, eastern portion) to determine beneficial use support and results are as follows: 4 of 93 samples exceeded the water quality threshold for pH. | ||||
| Data Reference: | WQX data for the 2020/2022 integrated report in Region 5. | ||||
| 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; Fifth Edition. Revised May 2018 (with approved amendments) | ||||
| Evaluation Guideline: | |||||
| Guideline Reference: | |||||
| Spatial Representation: | The samples were collected at 1 monitoring site (CALWR_WQX-B9D75891188) | ||||
| Temporal Representation: | The samples were collected between the dates of 2010-12-07 and 2016-04-06 | ||||
| Environmental Conditions: | |||||
| QAPP Information: | STORET | ||||
| QAPP Information Reference(s): | This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. | ||||
|
|||||
| LOE ID: | 309714 | ||||
| Pollutant: | pH | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | None | ||||
| Beneficial Use: | Water Contact Recreation | ||||
| 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 STORET data for Calaveras River, Lower (from Stockton Diverting Canal to the San Joaquin River; partly in Delta Waterways, eastern portion) to determine beneficial use support and results are as follows: 0 of 4 samples exceeded the water quality threshold for pH. | ||||
| Data Reference: | WQX data for the 2020/2022 integrated report in Region 5. | ||||
| 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; Fifth Edition. Revised May 2018 (with approved amendments) | ||||
| Evaluation Guideline: | |||||
| Guideline Reference: | |||||
| Spatial Representation: | The samples were collected at 1 monitoring site (CALWR_WQX-B9D75851208) | ||||
| Temporal Representation: | The samples were collected between the dates of 2010-09-08 and 2010-11-02 | ||||
| Environmental Conditions: | |||||
| QAPP Information: | STORET | ||||
| QAPP Information Reference(s): | This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. | ||||
|
|||||
| LOE ID: | 309713 | ||||
| Pollutant: | pH | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | None | ||||
| Beneficial Use: | Cold Freshwater Habitat | ||||
| Number of Samples: | 93 | ||||
| Number of Exceedances: | 4 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | Water Board staff assessed STORET data for Calaveras River, Lower (from Stockton Diverting Canal to the San Joaquin River; partly in Delta Waterways, eastern portion) to determine beneficial use support and results are as follows: 4 of 93 samples exceeded the water quality threshold for pH. | ||||
| Data Reference: | WQX data for the 2020/2022 integrated report in Region 5. | ||||
| 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; Fifth Edition. Revised May 2018 (with approved amendments) | ||||
| Evaluation Guideline: | |||||
| Guideline Reference: | |||||
| Spatial Representation: | The samples were collected at 1 monitoring site (CALWR_WQX-B9D75891188) | ||||
| Temporal Representation: | The samples were collected between the dates of 2010-12-07 and 2016-04-06 | ||||
| Environmental Conditions: | |||||
| QAPP Information: | STORET | ||||
| QAPP Information Reference(s): | This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. | ||||
|
|||||
| LOE ID: | 309711 | ||||
| Pollutant: | pH | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | None | ||||
| Beneficial Use: | Non-Contact Recreation | ||||
| Number of Samples: | 93 | ||||
| Number of Exceedances: | 4 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | Water Board staff assessed STORET data for Calaveras River, Lower (from Stockton Diverting Canal to the San Joaquin River; partly in Delta Waterways, eastern portion) to determine beneficial use support and results are as follows: 4 of 93 samples exceeded the water quality threshold for pH. | ||||
| Data Reference: | WQX data for the 2020/2022 integrated report in Region 5. | ||||
| 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; Fifth Edition. Revised May 2018 (with approved amendments) | ||||
| Evaluation Guideline: | |||||
| Guideline Reference: | |||||
| Spatial Representation: | The samples were collected at 1 monitoring site (CALWR_WQX-B9D75891188) | ||||
| Temporal Representation: | The samples were collected between the dates of 2010-12-07 and 2016-04-06 | ||||
| Environmental Conditions: | |||||
| QAPP Information: | STORET | ||||
| QAPP Information Reference(s): | This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. | ||||
|
|||||
| LOE ID: | 309712 | ||||
| Pollutant: | pH | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | None | ||||
| Beneficial Use: | Cold Freshwater Habitat | ||||
| Number of Samples: | 4 | ||||
| Number of Exceedances: | 0 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | Water Board staff assessed STORET data for Calaveras River, Lower (from Stockton Diverting Canal to the San Joaquin River; partly in Delta Waterways, eastern portion) to determine beneficial use support and results are as follows: 0 of 4 samples exceeded the water quality threshold for pH. | ||||
| Data Reference: | WQX data for the 2020/2022 integrated report in Region 5. | ||||
| 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; Fifth Edition. Revised May 2018 (with approved amendments) | ||||
| Evaluation Guideline: | |||||
| Guideline Reference: | |||||
| Spatial Representation: | The samples were collected at 1 monitoring site (CALWR_WQX-B9D75851208) | ||||
| Temporal Representation: | The samples were collected between the dates of 2010-09-08 and 2010-11-02 | ||||
| Environmental Conditions: | |||||
| QAPP Information: | STORET | ||||
| QAPP Information Reference(s): | This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. | ||||
|
|||||
| LOE ID: | 309710 | ||||
| Pollutant: | pH | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | None | ||||
| Beneficial Use: | Non-Contact Recreation | ||||
| 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 STORET data for Calaveras River, Lower (from Stockton Diverting Canal to the San Joaquin River; partly in Delta Waterways, eastern portion) to determine beneficial use support and results are as follows: 0 of 4 samples exceeded the water quality threshold for pH. | ||||
| Data Reference: | WQX data for the 2020/2022 integrated report in Region 5. | ||||
| 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; Fifth Edition. Revised May 2018 (with approved amendments) | ||||
| Evaluation Guideline: | |||||
| Guideline Reference: | |||||
| Spatial Representation: | The samples were collected at 1 monitoring site (CALWR_WQX-B9D75851208) | ||||
| Temporal Representation: | The samples were collected between the dates of 2010-09-08 and 2010-11-02 | ||||
| Environmental Conditions: | |||||
| QAPP Information: | STORET | ||||
| QAPP Information Reference(s): | This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. | ||||