Water Body Name: | Coyote Creek |
Water Body ID: | CAR4051501019980917123914 |
Water Body Type: | River & Stream |
DECISION ID |
132547 |
Region 4 |
Coyote Creek |
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Pollutant: | Diazinon |
Final Listing Decision: | Delist from 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | Delist from 303(d) list (TMDL required list)(2018) |
Revision Status | Revised |
Reason for Delisting: | Other |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for removal from the CWA section 303(d) List under section 4.11 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. The continuous chronic criteria is being met. 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. In January 2005, the EPA ban on the production and sale of diazinon went into effect. 3. Data from LOE 2440, 25003, and 21361, with a total 2 of the 22 samples and 7 of the 47 samples exceeding the criteria will not be considered in this decision. The data sampled either preceded the ban or were sampled shortly after the ban and does represent current conditions. 4.The following information indicates that the water quality standard is attained: 1 of the 100 samples exceed the criteria, 0 of the 26 samples exceed the criteria, 0 of the 26 samples exceed the criteria. Current conditions indicate WQS are being attained. 5. 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 the available data and information, SWRCB 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 exceeded. |
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LOE ID: | 298197 | ||||
Pollutant: | Diazinon | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Not Recorded | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 38 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed eSMR_Long Beach WRP data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 38 samples exceeded the water quality threshold for Diazinon. | ||||
Data Reference: | WQ data from the California Integrated Water Quality System (CIWQS) assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | The freshwater chronic value for diazinon is 0.10 ug/L (4 day average)(Finlayson, 2004). | ||||
Guideline Reference: | Water quality for diazinon. Memorandum to J. Karkoski, Central Valley RWQCB. Rancho Cordova, CA: Pesticide Investigation Unit, CA Department of Fish and Game | ||||
Guideline Reference: | Water quality criteria for diazinon and chlorpyrifos. Administrative Report 00-3. Rancho Cordova, CA: Pesticide Investigations Unit, Office of Spills and Response. CA Department of Fish and Game (with minor corrections to significant figures as described in Beaulaurier et al., 2005). | ||||
Spatial Representation: | The samples were collected at 1 monitoring site: 658086 (RSW-002). | ||||
Temporal Representation: | The samples were collected between the dates of 2011-07-06 and 2020-10-12 | ||||
Environmental Conditions: | |||||
QAPP Information: | Los Angeles County Sanitation Districts. 2020. Los Angeles County Sanitation Districts Receiving Water Monitoring Program. | ||||
QAPP Information Reference(s): | Los Angeles County Sanitation Districts Receiving Water Monitoring Program | ||||
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LOE ID: | 25003 | ||||
Pollutant: | Diazinon | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Aquatic Life Use: | Preservation of Rare & Endangered Species | Wildlife Habitat | ||||
Number of Samples: | 24 | ||||
Number of Exceedances: | 3 | ||||
Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) | ||||
Data Used to Assess Water Quality: | Three of 24 samples exceeded the California Department of Fish and Game (CDFG) chronic hazard assessment criterion for diazinon and one of 24 samples exceeded the CDFG acute hazard assessment criterion. Water quality samples were taken and analyzed for diazinon in accordance with the Sanitation Districts of Los Angeles County permit monitoring and testing parameters. | ||||
Data Reference: | Monitoring Report (MS4 Data) - CI 6948 for order no. 01-182 NPDES No. CAS004001 Municipal Storm Water and Urban Runoff Discharges within the County of Los Angeles, and the Incorporated Cities therein, Except the City of Long Beach | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Basin Plan states, "[n]o individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses." | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | The CDFG lists an acute and chronic hazard assessment criterion of 0.16 ug/L and 0.10 ug/L for diazinon. | ||||
Guideline Reference: | Water quality criteria for diazinon and chlorpyrifos. Administrative Report 00-3. Rancho Cordova, CA: Pesticide Investigations Unit, Office of Spills and Response. CA Department of Fish and Game | ||||
Guideline Reference: | Water quality for diazinon. Memorandum to J. Karkoski, Central Valley RWQCB. Rancho Cordova, CA: Pesticide Investigation Unit, CA Department of Fish and Game | ||||
Spatial Representation: | The Los Angeles County Department of Public Works conducted sampling at the mass emission monitoring station S13 located below Spring Street in Coyote Creek (Lat: 33.8098610175, Long: -118.077061937). | ||||
Temporal Representation: | Composite samples were taken approximately six per year, four wet-weather events and two dry-weather events, from October 2003 through April 2007. | ||||
Environmental Conditions: | |||||
QAPP Information: | Data was collected in compliance with the sampling and monitoring procedures detailed in County of Los Angeles MS4 Permit (NPDES No. CAS004001) Monitoring and Reporting Program. | ||||
QAPP Information Reference(s): | Monitoring and Reporting Program - CI 6948 for order no. 01-182 NPDES No. CAS004001 Municipal Storm Water and Urban Runoff Discharges within the County of Los Angeles, and the incorporated cities, except the City of Long Beach | ||||
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LOE ID: | 298196 | ||||
Pollutant: | Diazinon | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Not Recorded | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 38 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed eSMR_Long Beach WRP data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 38 samples exceeded the water quality threshold for Diazinon. | ||||
Data Reference: | WQ data from the California Integrated Water Quality System (CIWQS) assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | The freshwater chronic value for diazinon is 0.10 ug/L (4 day average)(Finlayson, 2004). | ||||
Guideline Reference: | Water quality for diazinon. Memorandum to J. Karkoski, Central Valley RWQCB. Rancho Cordova, CA: Pesticide Investigation Unit, CA Department of Fish and Game | ||||
Guideline Reference: | Water quality criteria for diazinon and chlorpyrifos. Administrative Report 00-3. Rancho Cordova, CA: Pesticide Investigations Unit, Office of Spills and Response. CA Department of Fish and Game (with minor corrections to significant figures as described in Beaulaurier et al., 2005). | ||||
Spatial Representation: | The samples were collected at 1 monitoring site: 658085 (RSW-001). | ||||
Temporal Representation: | The samples were collected between the dates of 2011-07-06 and 2020-10-12 | ||||
Environmental Conditions: | |||||
QAPP Information: | Los Angeles County Sanitation Districts. 2020. Los Angeles County Sanitation Districts Receiving Water Monitoring Program. | ||||
QAPP Information Reference(s): | Los Angeles County Sanitation Districts Receiving Water Monitoring Program | ||||
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LOE ID: | 21361 | ||||
Pollutant: | Diazinon | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Aquatic Life Use: | Preservation of Rare & Endangered Species | Wildlife Habitat | ||||
Number of Samples: | 23 | ||||
Number of Exceedances: | 4 | ||||
Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) | ||||
Data Used to Assess Water Quality: | Four of 23 samples exceeded the California Department of Fish and Game (CDFG) chronic hazard assessment criterion and three of 23 samples exceeded the CDFG acute hazard assessment criterion for diazinon. Water quality samples were taken and analyzed for diazinon in accordance with the Sanitation Districts of Los Angeles County permit monitoring and testing parameters. | ||||
Data Reference: | NPDES receiving water monitoring reports for Long Beach Water Reclamation Plant (NPDES No. CA0054119), Los Coyotes Water Reclamation Plant (NPDES No. CA0053716), Pomona Water Reclamation Plant (NPDES No. CA0053911), San Jose Creek Water Reclamation Plant (NPDES No. CA0053619), and Whittier Narrows Creek Water Reclamation Plant (NPDES No. CA0054011). | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Basin Plan states, "[n]o individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses." | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | The CDFG lists an acute and chronic hazard assessment criterion of 0.16 ug/L and 0.10 ug/L for diazinon. | ||||
Guideline Reference: | Water quality for diazinon. Memorandum to J. Karkoski, Central Valley RWQCB. Rancho Cordova, CA: Pesticide Investigation Unit, CA Department of Fish and Game | ||||
Guideline Reference: | Water quality criteria for diazinon and chlorpyrifos. Administrative Report 00-3. Rancho Cordova, CA: Pesticide Investigations Unit, Office of Spills and Response. CA Department of Fish and Game | ||||
Spatial Representation: | The Sanitation Districts of Los Angeles County conducted sampling in Coyote Creek in the following receiving water monitoring stations: receiving water station RA1 located upstream of discharge from Long Beach Water Reclamation Plant and receiving water station RA located downstream of discharge from Long Beach Water Reclamation Plant. | ||||
Temporal Representation: | Grab samples were taken and analyzed on a bimonthly and monthly basis from June 2004 to February 2007. | ||||
Environmental Conditions: | |||||
QAPP Information: | Data was collected in compliance with the sampling and monitoring procedures detailed in Sanitation Districts of Los Angeles County Permit (No. CA0054119) Monitoring and Reporting Program. | ||||
QAPP Information Reference(s): | Long Beach Water Reclamation Plant Monitoring and Reporting Program for NPDES No. CA0054119 (County Sanitation Districts of Los Angeles County) | ||||
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LOE ID: | 83901 | ||||
Pollutant: | Diazinon | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total Dissolved | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 26 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) | ||||
Data Used to Assess Water Quality: | None of 26 samples exceed the continuous concentration for Diazinon criteria of 50.0 ng/L. | ||||
Data Reference: | Data for Various Waterbodies in Region 8 and Region 9, 2006-2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | CDFG Hazard Assessment criteria for the protection of Aquatic life is as follows: 50.0 ng/L Continuous Concentration for diazinon in freshwater. (Siepman & Finlayson, 2000). | ||||
Guideline Reference: | Water quality criteria for diazinon and chlorpyrifos. Administrative Report 00-3. Rancho Cordova, CA: Pesticide Investigations Unit, Office of Spills and Response. CA Department of Fish and Game | ||||
Spatial Representation: | Samples were collected at site: CCBA01 | ||||
Temporal Representation: | Samples were collected from 2006 to 2009. | ||||
Environmental Conditions: | |||||
QAPP Information: | Data were submitted with the County of Orange Stormwater Program Quality Assurance Management Plan (QAMP) dated January 2010. However, data were collected prior to the development of this QAMP, therefore the quality of these data are unknown. | ||||
QAPP Information Reference(s): | |||||
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LOE ID: | 83848 | ||||
Pollutant: | Diazinon | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 26 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Zero out of the 26 samples exceeded the evaluation guideline. | ||||
Data Reference: | Data for Various Pollutants in Various Water Bodies in Sanitation Districts of Los Angeles County, 2005-2010. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Los Angeles Region Basin Plan states "No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses." | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | The screening criteria is 0.05 ug/L, chronic 4-day average. Water quality criteria for Diazinon and Chlorpyrifos. Administrative Report 00-3. Rancho Cordova, CA: Pesticide Investigations Unit, Office of Spills and Response. CA Department of Fish and Game. | ||||
Guideline Reference: | Water quality criteria for diazinon and chlorpyrifos. Administrative Report 00-3. Rancho Cordova, CA: Pesticide Investigations Unit, Office of Spills and Response. CA Department of Fish and Game | ||||
Spatial Representation: | 26 samples were collected from Coyote creek at locations SGR_LB_RSW-001 and SGR_LB_RSW-002. The location descriptions are: Long Beach Station RSW-001 (RA-1) and Long Beach Station RSW-002 (RA) | ||||
Temporal Representation: | 26 water sample from each locations were collected in from April 2007 through April 2010. | ||||
Environmental Conditions: | There was no special environmental conditions reported. | ||||
QAPP Information: | Excel spreadsheets of laboratory information include one called "LIMS" which gave reporting limits for each analyte evaluated accompanied each data package. | ||||
QAPP Information Reference(s): | |||||
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LOE ID: | 2440 | ||||
Pollutant: | Diazinon | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Not Recorded | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 22 | ||||
Number of Exceedances: | 2 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Numeric data generated from 22 samples taken from 10/12/00 to 4/30/03 at one to two-week sampling interval. Two samples out 22 exceeded the acute DFG fresh water hazard assessment criteria for the protection of aquatic life (LACDPW, 2004c). | ||||
Data Reference: | Placeholder reference 2006 303(d) | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Basin Plan narrative WQO for Pesticides. | ||||
Objective/Criterion Reference: | Placeholder reference 2006 303(d) | ||||
Evaluation Guideline: | Numerical Diazinon guideline used to interpret Basin Plan narrative pesticide WQO. The numeric guidelines are 0.10 ug/l 4-day average and 0.16 ug/l 1-hour average generated by DFG as a fresh water hazard assessment criteria for the protection of aquatic life (Siepman & Finlayson, 2000; Finlayson, 2004). | ||||
Guideline Reference: | Placeholder reference 2006 303(d) | ||||
Spatial Representation: | One sample site sampled during the dry and wet season beginning from 10/12/00 through 4/30/03 at approximately one to two week intervals. | ||||
Temporal Representation: | Twenty-one samples were taken during the wet season and one sample was taken during the dry season from 10/12/00 to 4/30/03 at approximately one to two week intervals as part of the Los Angeles County Storm water monitoring program prepared by the Los Angeles County Department of Public Works. | ||||
Environmental Conditions: | The Coyote Creek Monitoring Station (S13) is located at the existing ACOE stream gage station (Stream Gage No. F354-R) below Spring Street in the lower San Gabriel River watershed. The site assists in determining mass loading for the San Gabriel River watershed. At this location, the upstream tributary area is 150 square miles (extending into Orange County). The sampling site was chosen to avoid backwater effects from the San Gabriel River. Coyote Creek, at the gauging station, is a concrete lined trapezoidal channel. The Coyote Creek sampling location has been an active stream gauging station since 1963. | ||||
QAPP Information: | Evaluation of Analytes and QA/QC Specifications for Monitoring Program (Woodward-Clyde, 1996) Los Angeles County Department of Public Works. | ||||
QAPP Information Reference(s): | |||||
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LOE ID: | 96091 | ||||
Pollutant: | Diazinon | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Not Recorded | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 24 | ||||
Number of Exceedances: | 1 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | One of the 24 samples exceeded the evaluation guideline. | ||||
Data Reference: | Data for Various Pollutants in Los Angeles County Flood Control District, 2006-2010. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Los Angeles Region Basin Plan states "No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses." | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | The screening criteria is 0.05 ug/L, chronic 4-day average. Water quality criteria for Diazinon and Chlorpyrifos. Administrative Report 00-3. Rancho Cordova, CA: Pesticide Investigations Unit, Office of Spills and Response. CA Department of Fish and Game. | ||||
Guideline Reference: | Water quality criteria for diazinon and chlorpyrifos. Administrative Report 00-3. Rancho Cordova, CA: Pesticide Investigations Unit, Office of Spills and Response. CA Department of Fish and Game | ||||
Spatial Representation: | The Los Angeles County Department of Public Works conducted sampling at the mass emission monitoring station S13 located below Spring Street in Coyote Creek (Lat: 33.8098610175, Long: -118.077061937). | ||||
Temporal Representation: | 24 water sample were collected between April 2007 and March 2010. | ||||
Environmental Conditions: | There was no special environmental conditions reported. | ||||
QAPP Information: | Data was collected in compliance with the sampling and monitoring procedures detailed in County of Los Angeles MS4 Permit (NPDES No. CAS004001) Monitoring and Reporting Program. | ||||
QAPP Information Reference(s): | Monitoring and Reporting Program Plan for Los Angeles County Flood Control District. | ||||
DECISION ID |
154722 |
Region 4 |
Coyote Creek |
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Pollutant: | Copper |
Final Listing Decision: | Delist from 303(d) list (being addressed by USEPA approved TMDL) |
Last Listing Cycle's Final Listing Decision: | New Decision |
Revision Status | Revised |
Reason for Delisting: | Applicable WQS attained; reason for recovery unspecified |
TMDL Name: | San Gabriel River Metals (39) |
TMDL Project Code: | 385 |
Date TMDL Approved by USEPA: | 03/27/2007 |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for removal from the CWA section 303(d) List under sections 2.2, 4.1, 4.5 and 4.6 of the Listing Policy. Fourteen lines of evidence are available in the administrative record to assess this pollutant. All copper in water LOEs are in the dissolved fraction, whether initially reported as dissolved or converted from the total fraction based on the formula in the California Toxics Rule. These LOEs will be manually summed. LOE 28699 is a placeholder for data considered from the original copper listing. It will not be considered because there are sufficient other data in the assessment database to make a determination. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification for removing this water segment-pollutant combination from the CWA section 303(d) List. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. 34 of 649 samples exceeded the criterion for copper in water, and this does not exceed the allowable exceedances in Table 4.1 of the Listing Policy. 4. Pursuant to section 4.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should be removed from the section 303(d) list because applicable water quality standards for the pollutant are not being exceeded. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
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LOE ID: | 298120 | ||||
Pollutant: | Copper | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 3 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed LA County MS4 data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for Copper. | ||||
Data Reference: | WQ data from the MS4 database assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The dissolved copper criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is hardness dependent. The criterion when calculated using a default hardness of 100 mg/L is 9 ug/L (California Toxics Rule, 2000). | ||||
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: | The samples were collected at 1 monitoring site: LSGR_S13 (Coyote Creek @ Spring St. mass emission station). | ||||
Temporal Representation: | The samples were collected between the dates of 2016-07-28 and 2016-12-16 | ||||
Environmental Conditions: | |||||
QAPP Information: | Municipal Separate Storm Sewer System (MS4) | ||||
QAPP Information Reference(s): | Municipal Separate Storm Sewer System (MS4) | ||||
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LOE ID: | 298096 | ||||
Pollutant: | Copper | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 2 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed LA County MS4 data for Pacific Ocean Shoreline, Aliso HSA, at Blue Lagoon to determine beneficial use support and results are as follows: 0 of 2 samples exceeded the water quality threshold for Copper. | ||||
Data Reference: | WQ data from the MS4 database assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The dissolved copper criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is hardness dependent. The criterion when calculated using a default hardness of 100 mg/L is 9 ug/L (California Toxics Rule, 2000). | ||||
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: | The samples were collected at 1 monitoring site: S13 (Coyote Creek @ Spring St. mass emission station). | ||||
Temporal Representation: | The samples were collected between the dates of 2015-07-29 and 2015-12-14 | ||||
Environmental Conditions: | |||||
QAPP Information: | Municipal Separate Storm Sewer System (MS4) | ||||
QAPP Information Reference(s): | Municipal Separate Storm Sewer System (MS4) | ||||
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LOE ID: | 298278 | ||||
Pollutant: | Copper | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 2 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed San Gabriel River Regional Monitoring Program data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 2 samples exceeded the water quality threshold for Copper. | ||||
Data Reference: | Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The dissolved copper criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is hardness dependent. The criterion when calculated using a default hardness of 100 mg/L is 9 ug/L (California Toxics Rule, 2000). | ||||
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: | The samples were collected at 1 monitoring site: SMC01278_SGRRMP (SGLR01278_SGRRMP). | ||||
Temporal Representation: | The samples were collected between the dates of 2016-06-23 and 2017-07-19 | ||||
Environmental Conditions: | |||||
QAPP Information: | Aquatic Bioassay & Consulting Laboratories. 2019. San Gabriel River Regional Monitoring Program. | ||||
QAPP Information Reference(s): | San Gabriel River Regional Monitoring Program | ||||
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LOE ID: | 298279 | ||||
Pollutant: | Copper | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed SWAMP RWB8 Monitoring data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Copper. | ||||
Data Reference: | Field, Habitat, Toxicity, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | The dissolved copper criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is hardness dependent. The criterion when calculated using a default hardness of 100 mg/L is 9 ug/L (California Toxics Rule, 2000). | ||||
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: | The samples were collected at 1 monitoring site: 845RB8633 (Coyote Creek Random Olsen Site 633). | ||||
Temporal Representation: | The samples were collected between the dates of 2013-07-08 and 2013-07-08 | ||||
Environmental Conditions: | |||||
QAPP Information: | SWRCB. 2018. This is a placeholder reference for data that 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. | ||||
|
|||||
LOE ID: | 298180 | ||||
Pollutant: | Copper | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 112 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed eSMR_Long Beach WRP data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 112 samples exceeded the water quality threshold for Copper. | ||||
Data Reference: | WQ data from the California Integrated Water Quality System (CIWQS) assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The dissolved copper criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is hardness dependent. The criterion when calculated using a default hardness of 100 mg/L is 9 ug/L (California Toxics Rule, 2000). | ||||
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: | The samples were collected at 1 monitoring site: 658086 (RSW-002). | ||||
Temporal Representation: | The samples were collected between the dates of 2011-06-01 and 2020-09-16 | ||||
Environmental Conditions: | |||||
QAPP Information: | Los Angeles County Sanitation Districts. 2020. Los Angeles County Sanitation Districts Receiving Water Monitoring Program. | ||||
QAPP Information Reference(s): | Los Angeles County Sanitation Districts Receiving Water Monitoring Program | ||||
|
|||||
LOE ID: | 2429 | ||||
Pollutant: | Copper | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 62 | ||||
Number of Exceedances: | 19 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Numeric data generated from 62 samples taken from 11/10/97 to 1/7/05 at one to two-week sampling interval. Nineteen samples exceeded the dissolved copper continuous criterion concentration (CCC) (LARWQCB, 2006). | ||||
Data Reference: | Placeholder reference 2006 303(d) | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | CTR Dissolved Copper Criterion for continuous concentration (CCC) in water for the protection of aquatic life is expressed as a function of the total hardness of the water body. The aquatic life criteria will vary depending of total hardness reported at the sampling site. The CCC for dissolved copper is the highest concentration to which aquatic life can be exposed for an extended period of time (four days) without deleterious effects. This criterion is linked and applicable for the protection of aquatic life Beneficial Uses. | ||||
Objective/Criterion Reference: | Placeholder reference 2006 303(d) | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Station S13 on Coyote Creek. | ||||
Temporal Representation: | Samples collected between 11/10/97 and 1/7/05. | ||||
Environmental Conditions: | |||||
QAPP Information: | San Gabriel River metals TMDL monitoring. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 25038 | ||||
Pollutant: | Copper | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Aquatic Life Use: | Preservation of Rare & Endangered Species | Wildlife Habitat | ||||
Number of Samples: | 157 | ||||
Number of Exceedances: | 4 | ||||
Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) | ||||
Data Used to Assess Water Quality: | Four of 157 samples exceeded the California Toxics Rule (CTR) criterion continuous concentration for copper and three of 157 samples exceeded the criterion maximum concentration. Water quality samples were taken and analyzed for copper in accordance with the Long Beach Waste Water Reclamation Plant permit monitoring and testing parameters. | ||||
Data Reference: | NPDES receiving water monitoring reports for Long Beach Water Reclamation Plant (NPDES No. CA0054119), Los Coyotes Water Reclamation Plant (NPDES No. CA0053716), Pomona Water Reclamation Plant (NPDES No. CA0053911), San Jose Creek Water Reclamation Plant (NPDES No. CA0053619), and Whittier Narrows Creek Water Reclamation Plant (NPDES No. CA0054011). | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | CTR lists criterion maximum concentrations and criterion continuous concentrations for copper to protect aquatic life in freshwater. The copper criteria in freshwater is hardness dependent for each sample and varies based on the on the ambient hardness during sampling. Section (b)(1) in CTR contains the hardness dependent formula for metals the criteria. | ||||
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: | The Sanitation Districts of Los Angeles County conducted sampling in Coyote Creek in the following receiving water monitoring stations: station RA1 located upstream of discharge from Long Beach Water Reclamation Plant; station RA located downstream of discharge from Long Beach Water Reclamation Plant; and station R9 East located at the downstream end of the pavement lining (near Atherton Street) in the eastern low flow channel of San Gabriel River. | ||||
Temporal Representation: | Grab samples were taken and analyzed on an approximately and monthly basis from August 2004 to February 2007. | ||||
Environmental Conditions: | |||||
QAPP Information: | Data was collected in compliance with the sampling and monitoring procedures detailed in Sanitation Districts of Los Angeles County (NPDES No. CA0054119) Monitoring and Reporting Program. | ||||
QAPP Information Reference(s): | Long Beach Water Reclamation Plant Monitoring and Reporting Program for NPDES No. CA0054119 (County Sanitation Districts of Los Angeles County) | ||||
|
|||||
LOE ID: | 25036 | ||||
Pollutant: | Copper | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Aquatic Life Use: | Preservation of Rare & Endangered Species | Wildlife Habitat | ||||
Number of Samples: | 14 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) | ||||
Data Used to Assess Water Quality: | Zero of 14 samples exceeded the hardness dependent California Toxics Rule (CTR) criterion continuous concentration for copper and zero of 13 samples exceeded the hardness dependent CTR criterion maximum concentration. Water quality samples were taken and analyzed for copper in accordance with the Municipal Separate Storm Sewer System (MS4) permit monitoring and testing parameters. | ||||
Data Reference: | Monitoring Report (MS4 Data) - CI 6948 for order no. 01-182 NPDES No. CAS004001 Municipal Storm Water and Urban Runoff Discharges within the County of Los Angeles, and the Incorporated Cities therein, Except the City of Long Beach | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | CTR lists criterion continuous concentrations for copper to protect aquatic life in freshwater. The copper criterion in freshwater is hardness dependent for each sample and varies based on the on the ambient hardness during sampling. Section (b)(1) in CTR contains the hardness dependent formula for the metals criterion. | ||||
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: | The Los Angeles County Department of Public Works conducted sampling at the mass emission monitoring station S13 located below Spring Street in Coyote Creek (Lat: 33.8098610175, Long: -118.077061937). | ||||
Temporal Representation: | Composite samples were taken approximately six per year (four wet-weather events and two dry-weather events), from March 2005 through April 2007. | ||||
Environmental Conditions: | |||||
QAPP Information: | Data was collected in compliance with the sampling and monitoring procedures detailed in County of Los Angeles MS4 Permit (NPDES No. CAS004001) Monitoring and Reporting Program. | ||||
QAPP Information Reference(s): | Monitoring and Reporting Program - CI 6948 for order no. 01-182 NPDES No. CAS004001 Municipal Storm Water and Urban Runoff Discharges within the County of Los Angeles, and the incorporated cities, except the City of Long Beach | ||||
|
|||||
LOE ID: | 83900 | ||||
Pollutant: | Copper | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total Dissolved | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 126 | ||||
Number of Exceedances: | 1 | ||||
Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) | ||||
Data Used to Assess Water Quality: | One of the 126 samples exceeded the hardness adjusted criteria. | ||||
Data Reference: | Data for Various Pollutants in Various Water Bodies in Sanitation Districts of Los Angeles County, 2005-2010. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Surface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | California Toxics Rule (CTR) lists criterion continuous concentrations (4-day average) to protect aquatic life in freshwater. The criterion in freshwater is hardness dependent for each sample and varies based on the ambient hardness during sampling. Section (b)(1) in CTR contains the hardness dependent formula for the metals criterion. If no hardness data were available, a value of 100 mg/L was used. | ||||
Guideline Reference: | Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition | ||||
Spatial Representation: | Samples were collected from Coyote Creek from location LB also called SG at three sublocations: RA, RA1, and RA1B. | ||||
Temporal Representation: | Samples were collected monthly from June 2006 through May of 2010. | ||||
Environmental Conditions: | |||||
QAPP Information: | The Biology Department of the San Jose Creek Water Quality Laboratory is responsible for collecting samples from receiving water stations along the San Gabriel River, Coyote Creek, San Jose Creek, Santa Clara River, and the Rio Hondo River. Data is collected for the Los Angeles Sanitation District NPDES permits. Some standard operating procedures for sampling were submitted, however no QA Project Plan was. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 28699 | ||||
Pollutant: | Copper | ||||
LOE Subgroup: | Narrative Description Data | ||||
Matrix: | Not Specified | ||||
Fraction: | None | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Aquatic Life Use: | Preservation of Rare & Endangered Species | Wildlife Habitat | ||||
Number of Samples: | 0 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | Not Specified | ||||
Data Used to Assess Water Quality: | A TMDL has been established for this water segment-pollutant combination. The San Gabriel River MetalsTMDL was established by USEPA on March 26, 2007. | ||||
Data Reference: | Staff report and appendix establishing a TMDL for Metals in the San Gabriel River Watershed. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | |||||
Objective/Criterion Reference: | |||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | |||||
Temporal Representation: | |||||
Environmental Conditions: | |||||
QAPP Information: | QA information unavailable. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 83899 | ||||
Pollutant: | Copper | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 26 | ||||
Number of Exceedances: | 6 | ||||
Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) | ||||
Data Used to Assess Water Quality: | Six of the 26 samples exceeded the hardness adjusted CTR value for copper. | ||||
Data Reference: | Data for Various Waterbodies in Region 8 and Region 9, 2006-2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Surface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | California Toxics Rule (CTR) lists criterion continuous concentrations (4-day average) to protect aquatic life in freshwater. The disolved criterion in freshwater is hardness dependent for each sample and varies based on the ambient hardness during sampling. Section (b)(1) in CTR contains the hardness dependent formula for the metals criterion. If no hardness data were available, a value of 100 mg/L was used. | ||||
Guideline Reference: | Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition | ||||
Spatial Representation: | Samples were collected from station CCBA01, Coyote Creek at Valley View Drive. | ||||
Temporal Representation: | Samples were intermittently collected from September 2006 until January 2009. | ||||
Environmental Conditions: | Approximately 77% of the samples were collected after storm events. | ||||
QAPP Information: | Samples were collected and analyzed in accordance with the signed and certified, Quality Assurance Management Plan for the Orange County Stormwater Program. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 2432 | ||||
Pollutant: | Copper | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 21 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Numeric data generated from 21 samples taken from 10/30/00 to 4/30/03 at one to two-week sampling interval. It was not possible to determine any exceedances of total copper concentration in this water body because there is not guideline applicable to assess total copper (LACDPW, 2004). | ||||
Data Reference: | Placeholder reference 2006 303(d) | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | There is no guideline for total copper. | ||||
Objective/Criterion Reference: | Placeholder reference 2006 303(d) | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | One sample site sampled during the dry and wet season beginning from 10/12/00 through 4/30/03 at approximately one to two week intervals. | ||||
Temporal Representation: | Twenty-one samples where taken during the wet and dry season from 10/12/00 to 4/30/03 at approximately one to two week intervals as part of the Los Angeles County Storm water monitoring program prepared by the Los Angeles County Department of Public Works. | ||||
Environmental Conditions: | The Coyote Creek Monitoring Station (S13) is located at the existing ACOE stream gauge station (Stream Gauge No. F354-R) below Spring Street in the lower San Gabriel River watershed. The site assists in determining mass loading for the San Gabriel River watershed. At this location, the upstream tributary area is 150 square miles (extending into Orange County). The sampling site was chosen to avoid backwater effects from the San Gabriel River. Coyote Creek, at the gauging station, is a concrete lined trapezoidal channel. The Coyote Creek sampling location has been an active stream gauging station since 1963. | ||||
QAPP Information: | Evaluation of Analytes and QA/QC Specifications for Monitoring Program (Woodward-Clyde, 1996) Los Angeles County Department of Public Works. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 298183 | ||||
Pollutant: | Copper | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 113 | ||||
Number of Exceedances: | 1 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed eSMR_Long Beach WRP data for Coyote Creek to determine beneficial use support and results are as follows: 1 of 113 samples exceeded the water quality threshold for Copper. | ||||
Data Reference: | WQ data from the California Integrated Water Quality System (CIWQS) assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The dissolved copper criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is hardness dependent. The criterion when calculated using a default hardness of 100 mg/L is 9 ug/L (California Toxics Rule, 2000). | ||||
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: | The samples were collected at 1 monitoring site: 658085 (RSW-001). | ||||
Temporal Representation: | The samples were collected between the dates of 2011-06-01 and 2020-09-16 | ||||
Environmental Conditions: | |||||
QAPP Information: | Los Angeles County Sanitation Districts. 2020. Los Angeles County Sanitation Districts Receiving Water Monitoring Program. | ||||
QAPP Information Reference(s): | Los Angeles County Sanitation Districts Receiving Water Monitoring Program | ||||
|
|||||
LOE ID: | 298119 | ||||
Pollutant: | Copper | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 10 | ||||
Number of Exceedances: | 3 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed LA County MS4 data for Coyote Creek to determine beneficial use support and results are as follows: 3 of 10 samples exceeded the water quality threshold for Copper. | ||||
Data Reference: | WQ data from the MS4 database assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The dissolved copper criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is hardness dependent. The criterion when calculated using a default hardness of 100 mg/L is 9 ug/L (California Toxics Rule, 2000). | ||||
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: | The samples were collected at 1 monitoring site: LSGR-S13 (Coyote Creek at Spring St). | ||||
Temporal Representation: | The samples were collected between the dates of 2015-07-29 and 2019-11-21 | ||||
Environmental Conditions: | |||||
QAPP Information: | Municipal Separate Storm Sewer System (MS4) | ||||
QAPP Information Reference(s): | Municipal Separate Storm Sewer System (MS4) | ||||
DECISION ID |
132555 |
Region 4 |
Coyote Creek |
||
Pollutant: | Lead |
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)(2018) |
Revision Status | Revised |
Reason for Delisting: | Other |
TMDL Name: | San Gabriel River Metals (39) |
TMDL Project Code: | 385 |
Date TMDL Approved by USEPA: | 03/27/2007 |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for removal from the CWA section 303(d) List under section 4.1 of the Listing Policy. Under this section a single line of evidence is necessary to assess listing status. 14 lines of evidence are available in the administrative record to assess this pollutant. 15 of the 506 samples exceeded the CRITERIA. 0 of the 0 samples exceeded the CRITERIA. 1 of the 172 samples exceeded the CRITERIA. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification for removing this water segment-pollutant combination from the CWA section 303(d) List. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. 15 of 506, 0 of 0 and 1 of 172 samples exceeded the CRITERIA and this does not exceed the allowable frequency listed in Table 4.1 of the Listing Policy. 4. Pursuant to section 4.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should be removed from the section 303(d) list because applicable water quality standards for the pollutant are not being exceeded. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 21353 | ||||
Pollutant: | Lead | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Aquatic Life Use: | Preservation of Rare & Endangered Species | Wildlife Habitat | ||||
Number of Samples: | 51 | ||||
Number of Exceedances: | 7 | ||||
Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) | ||||
Data Used to Assess Water Quality: | Seven of 51 samples exceeded the hardness dependent California Toxics Rule (CTR) criterion continuous concentration for lead and zero of 100 samples exceeded the hardness dependent criterion maximum concentration. Water quality samples were taken and analyzed for lead in accordance with the Municipal Separate Storm Sewer System (MS4) permit monitoring and testing parameters. | ||||
Data Reference: | Lead 1995-2007 Monitoring Data (MS4 Data) for Coyote Creek. Municipal Storm Water and Urban Runoff Discharges within the County of Los Angeles, and the Incorporated Cities therein, Except the City of Long Beach. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | CTR lists criterion continuous concentrations for lead to protect aquatic life in freshwater. The lead criterion in freshwater is hardness dependent for each sample and varies based on the on the ambient hardness during sampling. Section (b)(1) in CTR contains the hardness dependent formula for the metals criteria. | ||||
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: | The Los Angeles County Department of Public Works conducted sampling at the mass emission monitoring station S13 located below Spring Street in Coyote Creek (Lat: 33.8098610175, Long: -118.077061937). | ||||
Temporal Representation: | Composite samples were taken and sampled periodically throughout the year from June 1995 through April 2007. | ||||
Environmental Conditions: | |||||
QAPP Information: | Data was collected in compliance with the sampling and monitoring procedures detailed in County of Los Angeles MS4 Permit (NPDES No. CAS004001) Monitoring and Reporting Program. | ||||
QAPP Information Reference(s): | Monitoring and Reporting Program - CI 6948 for order no. 01-182 NPDES No. CAS004001 Municipal Storm Water and Urban Runoff Discharges within the County of Los Angeles, and the incorporated cities, except the City of Long Beach | ||||
|
|||||
LOE ID: | 83856 | ||||
Pollutant: | Lead | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 26 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) | ||||
Data Used to Assess Water Quality: | None of the 26 samples exceeded the hardness adjusted CTR value for lead. | ||||
Data Reference: | Data for Various Waterbodies in Region 8 and Region 9, 2006-2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Surface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | California Toxics Rule (CTR) lists criterion continuous concentrations (4-day average) to protect aquatic life in freshwater. The disolved criterion in freshwater is hardness dependent for each sample and varies based on the ambient hardness during sampling. Section (b)(1) in CTR contains the hardness dependent formula for the metals criterion. If no hardness data were available, a value of 100 mg/L was used. | ||||
Guideline Reference: | Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition | ||||
Spatial Representation: | Samples were collected from station CCBA01, Coyote Creek at Valley View Drive. | ||||
Temporal Representation: | Samples were intermittently collected from September 2006 until January 2009. | ||||
Environmental Conditions: | Approximately 77% of the samples were collected after storm events. | ||||
QAPP Information: | Samples were collected and analyzed in accordance with the signed and certified, Quality Assurance Management Plan for the Orange County Stormwater Program. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 298136 | ||||
Pollutant: | Lead | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 2 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed LA County MS4 data for Pacific Ocean Shoreline, Aliso HSA, at Blue Lagoon to determine beneficial use support and results are as follows: 0 of 2 samples exceeded the water quality threshold for Lead. | ||||
Data Reference: | WQ data from the MS4 database assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The dissolved lead criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is hardness dependent. The criterion when calculated using a default hardness of 100 mg/L is 2.5 ug/L (California Toxics Rule, 2000). | ||||
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: | The samples were collected at 1 monitoring site: S13 (Coyote Creek @ Spring St. mass emission station). | ||||
Temporal Representation: | The samples were collected between the dates of 2015-07-29 and 2015-12-14 | ||||
Environmental Conditions: | |||||
QAPP Information: | Municipal Separate Storm Sewer System (MS4) | ||||
QAPP Information Reference(s): | Municipal Separate Storm Sewer System (MS4) | ||||
|
|||||
LOE ID: | 298292 | ||||
Pollutant: | Lead | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed SWAMP RWB8 Monitoring data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Lead. | ||||
Data Reference: | Field, Habitat, Toxicity, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | The dissolved lead criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is hardness dependent. The criterion when calculated using a default hardness of 100 mg/L is 2.5 ug/L (California Toxics Rule, 2000). | ||||
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: | The samples were collected at 1 monitoring site: 845RB8633 (Coyote Creek Random Olsen Site 633). | ||||
Temporal Representation: | The samples were collected between the dates of 2013-07-08 and 2013-07-08 | ||||
Environmental Conditions: | |||||
QAPP Information: | SWRCB. 2018. This is a placeholder reference for data that 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. | ||||
|
|||||
LOE ID: | 298295 | ||||
Pollutant: | Lead | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 2 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed San Gabriel River Regional Monitoring Program data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 2 samples exceeded the water quality threshold for Lead. | ||||
Data Reference: | Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The dissolved lead criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is hardness dependent. The criterion when calculated using a default hardness of 100 mg/L is 2.5 ug/L (California Toxics Rule, 2000). | ||||
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: | The samples were collected at 1 monitoring site: SMC01278_SGRRMP (SGLR01278_SGRRMP). | ||||
Temporal Representation: | The samples were collected between the dates of 2016-06-23 and 2017-07-19 | ||||
Environmental Conditions: | |||||
QAPP Information: | Aquatic Bioassay & Consulting Laboratories. 2019. San Gabriel River Regional Monitoring Program. | ||||
QAPP Information Reference(s): | San Gabriel River Regional Monitoring Program | ||||
|
|||||
LOE ID: | 298218 | ||||
Pollutant: | Lead | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 112 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed eSMR_Long Beach WRP data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 112 samples exceeded the water quality threshold for Lead. | ||||
Data Reference: | WQ data from the California Integrated Water Quality System (CIWQS) assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The dissolved lead criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is hardness dependent. The criterion when calculated using a default hardness of 100 mg/L is 2.5 ug/L (California Toxics Rule, 2000). | ||||
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: | The samples were collected at 1 monitoring site: 658085 (RSW-001). | ||||
Temporal Representation: | The samples were collected between the dates of 2011-06-01 and 2020-09-16 | ||||
Environmental Conditions: | |||||
QAPP Information: | Los Angeles County Sanitation Districts. 2020. Los Angeles County Sanitation Districts Receiving Water Monitoring Program. | ||||
QAPP Information Reference(s): | Los Angeles County Sanitation Districts Receiving Water Monitoring Program | ||||
|
|||||
LOE ID: | 298129 | ||||
Pollutant: | Lead | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 3 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed LA County MS4 data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for Lead. | ||||
Data Reference: | WQ data from the MS4 database assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The dissolved lead criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is hardness dependent. The criterion when calculated using a default hardness of 100 mg/L is 2.5 ug/L (California Toxics Rule, 2000). | ||||
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: | The samples were collected at 1 monitoring site: LSGR_S13 (Coyote Creek @ Spring St. mass emission station). | ||||
Temporal Representation: | The samples were collected between the dates of 2016-07-28 and 2016-12-16 | ||||
Environmental Conditions: | |||||
QAPP Information: | Municipal Separate Storm Sewer System (MS4) | ||||
QAPP Information Reference(s): | Municipal Separate Storm Sewer System (MS4) | ||||
|
|||||
LOE ID: | 298130 | ||||
Pollutant: | Lead | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 9 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed LA County MS4 data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 9 samples exceeded the water quality threshold for Lead. | ||||
Data Reference: | WQ data from the MS4 database assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The dissolved lead criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is hardness dependent. The criterion when calculated using a default hardness of 100 mg/L is 2.5 ug/L (California Toxics Rule, 2000). | ||||
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: | The samples were collected at 1 monitoring site: LSGR-S13 (Coyote Creek at Spring St). | ||||
Temporal Representation: | The samples were collected between the dates of 2015-07-29 and 2019-11-21 | ||||
Environmental Conditions: | |||||
QAPP Information: | Municipal Separate Storm Sewer System (MS4) | ||||
QAPP Information Reference(s): | Municipal Separate Storm Sewer System (MS4) | ||||
|
|||||
LOE ID: | 298205 | ||||
Pollutant: | Lead | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 112 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed eSMR_Long Beach WRP data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 112 samples exceeded the water quality threshold for Lead. | ||||
Data Reference: | WQ data from the California Integrated Water Quality System (CIWQS) assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The dissolved lead criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is hardness dependent. The criterion when calculated using a default hardness of 100 mg/L is 2.5 ug/L (California Toxics Rule, 2000). | ||||
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: | The samples were collected at 1 monitoring site: 658086 (RSW-002). | ||||
Temporal Representation: | The samples were collected between the dates of 2011-06-01 and 2020-09-16 | ||||
Environmental Conditions: | |||||
QAPP Information: | Los Angeles County Sanitation Districts. 2020. Los Angeles County Sanitation Districts Receiving Water Monitoring Program. | ||||
QAPP Information Reference(s): | Los Angeles County Sanitation Districts Receiving Water Monitoring Program | ||||
|
|||||
LOE ID: | 21346 | ||||
Pollutant: | Lead | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Aquatic Life Use: | Preservation of Rare & Endangered Species | Wildlife Habitat | ||||
Number of Samples: | 75 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) | ||||
Data Used to Assess Water Quality: | Zero of 75 samples exceeded the hardness dependent California Toxics Rule (CTR) criterion maximum concentration for lead and zero of 75 samples exceeded the hardness dependent California Toxics Rule criterion continuous concentration for lead. Water quality samples were taken and analyzed for lead in accordance with the Sanitation Districts of Los Angeles County permit monitoring and testing parameters. | ||||
Data Reference: | NPDES receiving water monitoring reports for Long Beach Water Reclamation Plant (NPDES No. CA0054119), Los Coyotes Water Reclamation Plant (NPDES No. CA0053716), Pomona Water Reclamation Plant (NPDES No. CA0053911), San Jose Creek Water Reclamation Plant (NPDES No. CA0053619), and Whittier Narrows Creek Water Reclamation Plant (NPDES No. CA0054011). | ||||
NPDES receiving water metals data for Long Beach Water Reclamation Plant (NPDES No. CA0054119), Los Coyotes Water Reclamation Plant (NPDES No. CA0053716), Pomona Water Reclamation Plant (NPDES No. CA0053911), San Jose Creek Water Reclamation Plant (NPDES No. CA0053619), and Whittier Narrows Creek Water Reclamation Plant (NPDES No. CA0054011). | |||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | CTR lists criterion continuous concentrations for lead to protect aquatic life in freshwater. The lead criterion in freshwater is hardness dependent for each sample and varies based on the on the ambient hardness during sampling. Section (b)(1) in CTR contains the hardness dependent formula for the metals criteria. | ||||
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: | The Sanitation Districts of Los Angeles County conducted sampling in Coyote Creek in the following receiving water monitoring stations: station RA1 located upstream of discharge from Long Beach Water Reclamation Plant; station RA located downstream of discharge from Long Beach Water Reclamation Plant; and station R9 East located at the downstream end of the pavement lining (near Atherton Street) in the eastern low flow channel of San Gabriel River. | ||||
Temporal Representation: | Grab samples were taken and analyzed on a yearly basis from August 1995 to July 2001 and on a bimonthly and monthly basis from July 2001 to February 2007 | ||||
Environmental Conditions: | |||||
QAPP Information: | Data was collected in compliance with the sampling and monitoring procedures detailed in Sanitation Districts of Los Angeles County Permit (No. CA0054119) Monitoring and Reporting Program. | ||||
QAPP Information Reference(s): | Long Beach Water Reclamation Plant Monitoring and Reporting Program for NPDES No. CA0054119 (County Sanitation Districts of Los Angeles County) | ||||
|
|||||
LOE ID: | 2438 | ||||
Pollutant: | Lead | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 97 | ||||
Number of Exceedances: | 1 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | One of 97 total lead samples exceed the dissolved lead CCC. This is a conservative estimate as total lead measurements are greater than or equal to dissolved lead measurements (LACSD, 2006). | ||||
Data Reference: | Placeholder reference 2006 303(d) | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The California Toxics Rule dissolved lead criterion for continuous concentration (CCC) in water for the protection of aquatic life is expressed as a function of the total hardness of the water body. The CCC for dissolved lead is the highest concentration to which aquatic life can be exposed for an extended period of time (four days) without deleterious effects. This criterion is linked and applicable for the protection of aquatic life Beneficial Uses. | ||||
Objective/Criterion Reference: | Placeholder reference 2006 303(d) | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Stations SG-RA, SG-RA1, and SG-R9E. | ||||
Temporal Representation: | Samples taken from July 2001 to July 2005 at one to two-week sampling intervals. | ||||
Environmental Conditions: | |||||
QAPP Information: | QA Info Missing | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 28716 | ||||
Pollutant: | Lead | ||||
LOE Subgroup: | Narrative Description Data | ||||
Matrix: | Not Specified | ||||
Fraction: | None | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Aquatic Life Use: | Preservation of Rare & Endangered Species | Wildlife Habitat | ||||
Number of Samples: | 0 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | Not Specified | ||||
Data Used to Assess Water Quality: | A TMDL has been established for this water segment-pollutant combination. The San Gabriel River MetalsTMDL was established by USEPA on March 26, 2007. | ||||
Data Reference: | Staff report and appendix establishing a TMDL for Metals in the San Gabriel River Watershed. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | |||||
Objective/Criterion Reference: | |||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | |||||
Temporal Representation: | |||||
Environmental Conditions: | |||||
QAPP Information: | QA information unavailable. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 2428 | ||||
Pollutant: | Lead | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 62 | ||||
Number of Exceedances: | 7 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Seven out of 62 samples exceeded the dissolved lead CCC (LACDPW, 2004c. Los Angeles RWQCB, 2006) (USEPA, 2007). | ||||
Data Reference: | Placeholder reference 2006 303(d) | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The California Toxics Rule dissolved lead criterion for continuous chronic concentration (CCC) in water for the protection of aquatic life is expressed as a function of the total hardness of the water body. The CCC for dissolved lead is the highest concentration to which aquatic life can be exposed for an extended period of time (four days) without deleterious effects. This criterion is linked and applicable for the protection of aquatic life Beneficial Uses. | ||||
Objective/Criterion Reference: | Placeholder reference 2006 303(d) | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | The Coyote Creek Monitoring Station (S13) is located at the existing ACOE stream gauge station (Stream Gauge No. F354-R) below Spring Street in the lower San Gabriel River watershed. The site assists in determining mass loading for the San Gabriel River watershed. At this location, the upstream tributary area is 150 square miles (extending into Orange County). The sampling site was chosen to avoid backwater effects from the San Gabriel River. Coyote Creek, at the gauging station, is a concrete lined trapezoidal channel. The Coyote Creek sampling location has been an active stream gauging station since 1963. | ||||
Temporal Representation: | Samples were taken from 11/10/1997 to 1/7/2005. | ||||
Environmental Conditions: | |||||
QAPP Information: | Evaluation of Analytes and QA/QC Specifications for Monitoring Program (Woodward-Clyde, 1996) Los Angeles County Department of Public Works. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 83857 | ||||
Pollutant: | Lead | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 126 | ||||
Number of Exceedances: | 1 | ||||
Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) | ||||
Data Used to Assess Water Quality: | One of the 126 samples exceeded the hardness adjusted criteria. | ||||
Data Reference: | Data for Various Pollutants in Various Water Bodies in Sanitation Districts of Los Angeles County, 2005-2010. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Surface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | California Toxics Rule (CTR) lists criterion continuous concentrations (4-day average) to protect aquatic life in freshwater. The criterion in freshwater is hardness dependent for each sample and varies based on the ambient hardness during sampling. Section (b)(1) in CTR contains the hardness dependent formula for the metals criterion. If no hardness data were available, a value of 100 mg/L was used. | ||||
Guideline Reference: | Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition | ||||
Spatial Representation: | Samples were collected from Coyote Creek from location LB also called SG at three sublocations: RA, RA1, and RA1B. | ||||
Temporal Representation: | Samples were collected monthly from June 2006 through May of 2010. | ||||
Environmental Conditions: | |||||
QAPP Information: | The Biology Department of the San Jose Creek Water Quality Laboratory is responsible for collecting samples from receiving water stations along the San Gabriel River, Coyote Creek, San Jose Creek, Santa Clara River, and the Rio Hondo River. Data is collected for the Los Angeles Sanitation District NPDES permits. Some standard operating procedures for sampling were submitted, however no QA Project Plan was. | ||||
QAPP Information Reference(s): | |||||
DECISION ID |
132575 |
Region 4 |
Coyote Creek |
||
Pollutant: | Zinc |
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 (TMDL required list)(2018) |
Revision Status | Revised |
Reason for Delisting: | Applicable WQS attained; reason for recovery unspecified |
TMDL Name: | San Gabriel River Metals (39) |
TMDL Project Code: | 385 |
Date TMDL Approved by USEPA: | 03/26/2007 |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under this section a single line of evidence is necessary to assess listing status. 13 lines of evidence are available in the administrative record to assess this pollutant. The LOE fractions "dissolved" and "total dissolved" are equivalent and are being manually added. 7 of the 470 samples exceeded the CRITERIA. 2 of the 267 samples exceeded the CRITERIA. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination from the CWA section 303(d) List. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. 7 of 470 and 2 of 267 samples exceeded the CRITERIA and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because applicable water quality standards are not being exceeded. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 298322 | ||||
Pollutant: | Zinc | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed SWAMP RWB8 Monitoring data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Zinc. | ||||
Data Reference: | Field, Habitat, Toxicity, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | The dissolved zinc criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is hardness dependent. The criterion when calculated using a default hardness of 100 mg/L is 120 ug/L (California Toxics Rule, 2000). | ||||
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: | The samples were collected at 1 monitoring site: 845RB8633 (Coyote Creek Random Olsen Site 633). | ||||
Temporal Representation: | The samples were collected between the dates of 2013-07-08 and 2013-07-08 | ||||
Environmental Conditions: | |||||
QAPP Information: | SWRCB. 2018. This is a placeholder reference for data that 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. | ||||
|
|||||
LOE ID: | 298253 | ||||
Pollutant: | Zinc | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 112 | ||||
Number of Exceedances: | 1 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed eSMR_Long Beach WRP data for Coyote Creek to determine beneficial use support and results are as follows: 1 of 112 samples exceeded the water quality threshold for Zinc. | ||||
Data Reference: | WQ data from the California Integrated Water Quality System (CIWQS) assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The dissolved zinc criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is hardness dependent. The criterion when calculated using a default hardness of 100 mg/L is 120 ug/L (California Toxics Rule, 2000). | ||||
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: | The samples were collected at 1 monitoring site: 658086 (RSW-002). | ||||
Temporal Representation: | The samples were collected between the dates of 2011-06-01 and 2020-09-16 | ||||
Environmental Conditions: | |||||
QAPP Information: | Los Angeles County Sanitation Districts. 2020. Los Angeles County Sanitation Districts Receiving Water Monitoring Program. | ||||
QAPP Information Reference(s): | Los Angeles County Sanitation Districts Receiving Water Monitoring Program | ||||
|
|||||
LOE ID: | 298153 | ||||
Pollutant: | Zinc | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 3 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed LA County MS4 data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for Zinc. | ||||
Data Reference: | WQ data from the MS4 database assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The dissolved zinc criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is hardness dependent. The criterion when calculated using a default hardness of 100 mg/L is 120 ug/L (California Toxics Rule, 2000). | ||||
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: | The samples were collected at 1 monitoring site: LSGR_S13 (Coyote Creek @ Spring St. mass emission station). | ||||
Temporal Representation: | The samples were collected between the dates of 2016-07-28 and 2016-12-16 | ||||
Environmental Conditions: | |||||
QAPP Information: | Municipal Separate Storm Sewer System (MS4) | ||||
QAPP Information Reference(s): | Municipal Separate Storm Sewer System (MS4) | ||||
|
|||||
LOE ID: | 298155 | ||||
Pollutant: | Zinc | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 2 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed LA County MS4 data for Pacific Ocean Shoreline, Aliso HSA, at Blue Lagoon to determine beneficial use support and results are as follows: 0 of 2 samples exceeded the water quality threshold for Zinc. | ||||
Data Reference: | WQ data from the MS4 database assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The dissolved zinc criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is hardness dependent. The criterion when calculated using a default hardness of 100 mg/L is 120 ug/L (California Toxics Rule, 2000). | ||||
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: | The samples were collected at 1 monitoring site: S13 (Coyote Creek @ Spring St. mass emission station). | ||||
Temporal Representation: | The samples were collected between the dates of 2015-07-29 and 2015-12-14 | ||||
Environmental Conditions: | |||||
QAPP Information: | Municipal Separate Storm Sewer System (MS4) | ||||
QAPP Information Reference(s): | Municipal Separate Storm Sewer System (MS4) | ||||
|
|||||
LOE ID: | 298321 | ||||
Pollutant: | Zinc | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 2 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed San Gabriel River Regional Monitoring Program data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 2 samples exceeded the water quality threshold for Zinc. | ||||
Data Reference: | Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The dissolved zinc criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is hardness dependent. The criterion when calculated using a default hardness of 100 mg/L is 120 ug/L (California Toxics Rule, 2000). | ||||
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: | The samples were collected at 1 monitoring site: SMC01278_SGRRMP (SGLR01278_SGRRMP). | ||||
Temporal Representation: | The samples were collected between the dates of 2016-06-23 and 2017-07-19 | ||||
Environmental Conditions: | |||||
QAPP Information: | Aquatic Bioassay & Consulting Laboratories. 2019. San Gabriel River Regional Monitoring Program. | ||||
QAPP Information Reference(s): | San Gabriel River Regional Monitoring Program | ||||
|
|||||
LOE ID: | 298154 | ||||
Pollutant: | Zinc | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 10 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed LA County MS4 data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 10 samples exceeded the water quality threshold for Zinc. | ||||
Data Reference: | WQ data from the MS4 database assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The dissolved zinc criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is hardness dependent. The criterion when calculated using a default hardness of 100 mg/L is 120 ug/L (California Toxics Rule, 2000). | ||||
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: | The samples were collected at 1 monitoring site: LSGR-S13 (Coyote Creek at Spring St). | ||||
Temporal Representation: | The samples were collected between the dates of 2015-07-29 and 2019-11-21 | ||||
Environmental Conditions: | |||||
QAPP Information: | Municipal Separate Storm Sewer System (MS4) | ||||
QAPP Information Reference(s): | Municipal Separate Storm Sewer System (MS4) | ||||
|
|||||
LOE ID: | 298251 | ||||
Pollutant: | Zinc | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 112 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed eSMR_Long Beach WRP data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 112 samples exceeded the water quality threshold for Zinc. | ||||
Data Reference: | WQ data from the California Integrated Water Quality System (CIWQS) assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The dissolved zinc criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is hardness dependent. The criterion when calculated using a default hardness of 100 mg/L is 120 ug/L (California Toxics Rule, 2000). | ||||
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: | The samples were collected at 1 monitoring site: 658085 (RSW-001). | ||||
Temporal Representation: | The samples were collected between the dates of 2011-06-01 and 2020-09-16 | ||||
Environmental Conditions: | |||||
QAPP Information: | Los Angeles County Sanitation Districts. 2020. Los Angeles County Sanitation Districts Receiving Water Monitoring Program. | ||||
QAPP Information Reference(s): | Los Angeles County Sanitation Districts Receiving Water Monitoring Program | ||||
|
|||||
LOE ID: | 2439 | ||||
Pollutant: | Zinc | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 111 | ||||
Number of Exceedances: | 1 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | One out of 111 total zinc samples exceed the dissolved zinc CCC. This is a conservative estimate as total zinc measurements are greater than or equal to dissolved zinc measurements (LACSD, 2006). | ||||
Data Reference: | Placeholder reference 2006 303(d) | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The California Toxics Rule dissolved zinc criterion continuous concentration (CCC) in water for the protection of aquatic life is expressed as a function of the total hardness of the water body. The CCC for dissolved zinc is the highest concentration to which aquatic life can be exposed for an extended period of time (four days) without deleterious effects. This criterion is for the protection of aquatic life Beneficial Uses. | ||||
Objective/Criterion Reference: | Placeholder reference 2006 303(d) | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Stations SG-RA, SG-RA1, and SG-R9E. | ||||
Temporal Representation: | Samples taken from 2/6/1996 to 6/23/2005. | ||||
Environmental Conditions: | |||||
QAPP Information: | QA Info Missing | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 21360 | ||||
Pollutant: | Zinc | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Aquatic Life Use: | Preservation of Rare & Endangered Species | Wildlife Habitat | ||||
Number of Samples: | 156 | ||||
Number of Exceedances: | 1 | ||||
Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) | ||||
Data Used to Assess Water Quality: | One of 156 samples exceeded the hardness dependent California Toxics Rule (CTR) criterion continuous concentration and one of 156 samples exceeded criterion maximum concentration for zinc. Water quality samples were taken and analyzed for zinc in accordance with the Long Beach Waste Water Reclamation Plant permit monitoring and testing parameters. | ||||
Data Reference: | NPDES receiving water monitoring reports for Long Beach Water Reclamation Plant (NPDES No. CA0054119), Los Coyotes Water Reclamation Plant (NPDES No. CA0053716), Pomona Water Reclamation Plant (NPDES No. CA0053911), San Jose Creek Water Reclamation Plant (NPDES No. CA0053619), and Whittier Narrows Creek Water Reclamation Plant (NPDES No. CA0054011). | ||||
NPDES receiving water metals data for Long Beach Water Reclamation Plant (NPDES No. CA0054119), Los Coyotes Water Reclamation Plant (NPDES No. CA0053716), Pomona Water Reclamation Plant (NPDES No. CA0053911), San Jose Creek Water Reclamation Plant (NPDES No. CA0053619), and Whittier Narrows Creek Water Reclamation Plant (NPDES No. CA0054011). | |||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The California Toxics Rule lists criterion continuous concentrations for zinc to protect aquatic life in freshwater. The zinc criterion in freshwater is hardness dependent for each sample and varies based on the on the ambient hardness during sampling. Section (b)(1) in CTR contains the hardness dependent formula for the metals criteria. | ||||
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: | The Sanitation Districts of Los Angeles County conducted sampling in Coyote Creek in the following receiving water monitoring stations: receiving water station RA1 located upstream of discharge from Long Beach Water Reclamation Plant and receiving water station RA located downstream of discharge from Long Beach Water Reclamation Plant. | ||||
Temporal Representation: | Grab samples were taken and analyzed on a yearly basis from August 1995 to July 2001 and on a monthly basis from July 2001 to February 2007. | ||||
Environmental Conditions: | |||||
QAPP Information: | Data was collected in compliance with the sampling and monitoring procedures detailed in Sanitation Districts of Los Angeles County (NPDES No. CA0054119) Monitoring and Reporting Program. | ||||
QAPP Information Reference(s): | Long Beach Water Reclamation Plant Monitoring and Reporting Program for NPDES No. CA0054119 (County Sanitation Districts of Los Angeles County) | ||||
|
|||||
LOE ID: | 21359 | ||||
Pollutant: | Zinc | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Aquatic Life Use: | Preservation of Rare & Endangered Species | Wildlife Habitat | ||||
Number of Samples: | 14 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) | ||||
Data Used to Assess Water Quality: | Zero of 14 samples exceeded the hardness dependent California Toxics Rule (CTR) criterion maximum concentration for zinc. Water quality samples were taken and analyzed for zinc in accordance with the Municipal Separate Storm Sewer System (MS4) permit monitoring and testing parameters. | ||||
Data Reference: | Monitoring Report (MS4 Data) - CI 6948 for order no. 01-182 NPDES No. CAS004001 Municipal Storm Water and Urban Runoff Discharges within the County of Los Angeles, and the Incorporated Cities therein, Except the City of Long Beach | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The California Toxics Rule lists criterion continuous concentrations for zinc to protect aquatic life in freshwater. The zinc criterion in freshwater is hardness dependent for each sample and varies based on the on the ambient hardness during sampling. Section (b)(1) in CTR contains the hardness dependent formula for the metals criteria. | ||||
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: | The Los Angeles County Department of Public Works conducted sampling at the mass emission monitoring station S13 located below Spring Street in Coyote Creek (Lat: 33.8098610175, Long: -118.077061937). | ||||
Temporal Representation: | Composite samples were taken approximately six per year (four wet-weather events and two dry-weather events), from March 2005 through April 2007. | ||||
Environmental Conditions: | |||||
QAPP Information: | Data was collected in compliance with the sampling and monitoring procedures detailed in County of Los Angeles MS4 Permit (NPDES No. CAS004001) Monitoring and Reporting Program. | ||||
QAPP Information Reference(s): | Monitoring and Reporting Program - CI 6948 for order no. 01-182 NPDES No. CAS004001 Municipal Storm Water and Urban Runoff Discharges within the County of Los Angeles, and the incorporated cities, except the City of Long Beach | ||||
|
|||||
LOE ID: | 83881 | ||||
Pollutant: | Zinc | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 26 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) | ||||
Data Used to Assess Water Quality: | None of the 26 samples exceeded the hardness adjusted CTR value for zinc. | ||||
Data Reference: | Data for Various Waterbodies in Region 8 and Region 9, 2006-2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Surface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | California Toxics Rule (CTR) lists criterion continuous concentrations (4-day average) to protect aquatic life in freshwater. The disolved criterion in freshwater is hardness dependent for each sample and varies based on the ambient hardness during sampling. Section (b)(1) in CTR contains the hardness dependent formula for the metals criterion. If no hardness data were available, a value of 100 mg/L was used. | ||||
Guideline Reference: | Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition | ||||
Spatial Representation: | Samples were collected from station CCBA01, Coyote Creek at Valley View Drive. | ||||
Temporal Representation: | Samples were intermittently collected from September 2006 until January 2009. | ||||
Environmental Conditions: | Approximately 77% of the samples were collected after storm events. | ||||
QAPP Information: | Samples were collected and analyzed in accordance with the signed and certified, Quality Assurance Management Plan for the Orange County Stormwater Program. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 2427 | ||||
Pollutant: | Zinc | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 62 | ||||
Number of Exceedances: | 6 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Numeric data generated from 62 samples with 6 samples exceeding the CTR dissolved zinc CCC (LACDPW, 2004C. LARWQCB, 2006) (USEPA, 2007). | ||||
Data Reference: | Placeholder reference 2006 303(d) | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The California Toxics Rule dissolved zinc criterion continuous concentration (CCC) in water for the protection of aquatic life is expressed as a function of the total hardness of the water body. The CCC for dissolved zinc is the highest concentration to which aquatic life can be exposed for an extended period of time (four days) without deleterious effects. This criterion is for the protection of aquatic life Beneficial Uses. | ||||
Objective/Criterion Reference: | Placeholder reference 2006 303(d) | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | The Coyote Creek Monitoring Station (S13) is located at the existing ACOE stream gauge station (Stream Gauge No. F354-R) below Spring Street in the lower San Gabriel River watershed. The site assists in determining mass loading for the San Gabriel River watershed. At this location, the upstream tributary area is 150 square miles (extending into Orange County). The sampling site was chosen to avoid backwater effects from the San Gabriel River. Coyote Creek, at the gauging station, is a concrete lined trapezoidal channel. The Coyote Creek sampling location has been an active stream gauging station since 1963. | ||||
Temporal Representation: | Samples collected from 11/10/97 to 1/7/05. | ||||
Environmental Conditions: | |||||
QAPP Information: | Evaluation of Analytes and QA/QC Specifications for Monitoring Program (Woodward-Clyde, 1996) Los Angeles County Department of Public Works. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 83882 | ||||
Pollutant: | Zinc | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total Dissolved | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 126 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) | ||||
Data Used to Assess Water Quality: | None of the 126 samples exceeded the hardness adjusted criteria. | ||||
Data Reference: | Data for Various Pollutants in Various Water Bodies in Sanitation Districts of Los Angeles County, 2005-2010. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Surface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | California Toxics Rule (CTR) lists criterion continuous concentrations (4-day average) to protect aquatic life in freshwater. The criterion in freshwater is hardness dependent for each sample and varies based on the ambient hardness during sampling. Section (b)(1) in CTR contains the hardness dependent formula for the metals criterion. If no hardness data were available, a value of 100 mg/L was used. | ||||
Guideline Reference: | Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition | ||||
Spatial Representation: | Samples were collected from Coyote Creek from location LB also called SG at three sublocations: RA, RA1, and RA1B. | ||||
Temporal Representation: | Samples were collected monthly from June 2006 through May of 2010. | ||||
Environmental Conditions: | |||||
QAPP Information: | The Biology Department of the San Jose Creek Water Quality Laboratory is responsible for collecting samples from receiving water stations along the San Gabriel River, Coyote Creek, San Jose Creek, Santa Clara River, and the Rio Hondo River. Data is collected for the Los Angeles Sanitation District NPDES permits. Some standard operating procedures for sampling were submitted, however no QA Project Plan was. | ||||
QAPP Information Reference(s): | |||||
DECISION ID |
150432 |
Region 4 |
Coyote Creek |
||
Pollutant: | Ammonia |
Final Listing Decision: | Delist from 303(d) list (being addressed by action other than TMDL) |
Last Listing Cycle's Final Listing Decision: | Delist from 303(d) list (being addressed by action other than TMDL)(2018) |
Revision Status | Revised |
Reason for Delisting: | Applicable WQS attained; due to restoration activities |
TMDL Name: | San Gabriel River Nitrogens |
TMDL Project Code: | 390 |
Expected Attainment Date: | 2019 |
Implementation Action Other than TMDL: | An alternative enforceable program is in place that will address ammonia water quality standards exceedances for this Reach. The Regional Board adopted Order No. R4-2007-047 for the Long Beach Water Reclamation Plant (WRP) on September 6, 2007, which contains effluent limits, receiving water limitations, and monitoring requirements for ammonia at the Long Beach WRP. In accordance with this permit, the Los Angeles County Sanitation Districts have added nitrification and denitrification facilities at the Long Beach WRP to comply with the ammonia objectives. The Long Beach WRP is in the process of upgrading the nitrification/denitrification process at the facility to improve its reliability. |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status. Nine lines of evidence are available in the administrative record to assess this pollutant. The pollutants and fractions are equivalent and are being summed. 33 of 468 samples exceeded the objectives. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the CWA section 303(d) List in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. 33 of 468 samples exceeded the objectives and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should be placed on the section 303(d) list because applicable water quality standards are exceeded and a pollutant contributes to or causes the problem. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 298163 | ||||
Pollutant: | Nitrogen, ammonia (Total Ammonia) | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 91 | ||||
Number of Exceedances: | 3 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed eSMR_Long Beach WRP data for Coyote Creek to determine beneficial use support and the results are as follows: 3 of the 91 samples exceeded the water quality threshold for Ammonia as N. | ||||
Data Reference: | WQ data from the California Integrated Water Quality System (CIWQS) assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Total Ammonia criterion continuous concentration (expressed as a 30-day average) to protect aquatic life in freshwater is Temperature and pH dependent, and was calculated according to the site-specific formula for Coyote Creek (Long Beach WRP to confluence with San Gabriel River), which presumes early life stages are absent year round. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | The samples were collected at 1 monitoring site (658086). | ||||
Temporal Representation: | Data for this waterbody was collected over the date range 2011-06-01 to 2020-04-16 | ||||
Environmental Conditions: | |||||
QAPP Information: | Los Angeles County Sanitation Districts. 2020. Los Angeles County Sanitation Districts Receiving Water Monitoring Program. | ||||
QAPP Information Reference(s): | Los Angeles County Sanitation Districts Receiving Water Monitoring Program | ||||
|
|||||
LOE ID: | 298261 | ||||
Pollutant: | Nitrogen, ammonia (Total Ammonia) | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed SWAMP RWB8 Monitoring data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Ammonia as N. | ||||
Data Reference: | Field, Habitat, Toxicity, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | The Total Ammonia criterion continuous concentration (expressed as a 30-day average) to protect aquatic life in freshwater is Temperature and pH dependent, and was calculated according to the formula listed in the Los Angeles Region Basin Plan for Average Objective for Ammonia-N for Freshwaters applicable to Waters Subject to the “Early Life Stage Absent” Condition | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | The samples were collected at 1 monitoring site: 845CTC480 (Coyote Creek Random Olsen Site 480). | ||||
Temporal Representation: | The samples were collected between the dates of 2012-06-19 and 2012-06-19 | ||||
Environmental Conditions: | |||||
QAPP Information: | SWRCB. 2018. This is a placeholder reference for data that 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. | ||||
|
|||||
LOE ID: | 298264 | ||||
Pollutant: | Nitrogen, ammonia (Total Ammonia) | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 2 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed San Gabriel River Regional Monitoring Program data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 2 samples exceeded the water quality threshold for Ammonia as N. | ||||
Data Reference: | Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Total Ammonia criterion continuous concentration (expressed as a 30-day average) to protect aquatic life in freshwater is Temperature and pH dependent, and was calculated according to the Average Objective for Ammonia-N for Freshwaters applicable to Waters Subject to the “Early Life Stage Absent” Condition | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | The samples were collected at 1 monitoring site: SMC01278_SGRRMP (SGLR01278_SGRRMP). | ||||
Temporal Representation: | The samples were collected between on 2016-06-23 and 2017-07-19 | ||||
Environmental Conditions: | |||||
QAPP Information: | Aquatic Bioassay & Consulting Laboratories. 2019. San Gabriel River Regional Monitoring Program. | ||||
QAPP Information Reference(s): | San Gabriel River Regional Monitoring Program | ||||
|
|||||
LOE ID: | 298160 | ||||
Pollutant: | Nitrogen, ammonia (Total Ammonia) | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed eSMR_Long Beach WRP data for Coyote Creek to determine beneficial use support and the results are as follows: 0 of the 1 sample exceeded the water quality threshold for Ammonia as N. | ||||
Data Reference: | WQ data from the California Integrated Water Quality System (CIWQS) assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Total Ammonia criterion continuous concentration (expressed as a 30-day average) to protect aquatic life in freshwater is Temperature and pH dependent, and was calculated according to the site-specific objective for Coyote Creek (Long Beach WRP to confluence with San Gabriel River), which assumes early life stages are absent. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | The samples were collected at 1 monitoring site (658085). | ||||
Temporal Representation: | Data for this waterbody was collected on 2017-11-02. | ||||
Environmental Conditions: | |||||
QAPP Information: | Los Angeles County Sanitation Districts. 2020. Los Angeles County Sanitation Districts Receiving Water Monitoring Program. | ||||
QAPP Information Reference(s): | Los Angeles County Sanitation Districts Receiving Water Monitoring Program | ||||
|
|||||
LOE ID: | 298260 | ||||
Pollutant: | Nitrogen, ammonia (Total Ammonia) | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed SWAMP RWB8 Monitoring data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Ammonia as N. | ||||
Data Reference: | Field, Habitat, Toxicity, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | The Total Ammonia criterion continuous concentration (expressed as a 30-day average) to protect aquatic life in freshwater is Temperature and pH dependent, and was calculated according to the Average Objective for Ammonia-N for Freshwaters applicable to Waters Subject to the “Early Life Stage Absent” Condition | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | The samples were collected at 1 monitoring site: 845RB8633 (Coyote Creek Random Olsen Site 633). | ||||
Temporal Representation: | The samples were collected between the dates of 2013-07-08 and 2013-07-08 | ||||
Environmental Conditions: | |||||
QAPP Information: | SWRCB. 2018. This is a placeholder reference for data that 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. | ||||
|
|||||
LOE ID: | 26860 | ||||
Pollutant: | Ammonia | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Aquatic Life Use: | Freshwater Replenishment | Preservation of Rare & Endangered Species | Wildlife Habitat | ||||
Number of Samples: | 76 | ||||
Number of Exceedances: | 11 | ||||
Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) | ||||
Data Used to Assess Water Quality: | 11 of 76 samples exceeded the 30-day average objective and two of 280 samples exceeded the one-hour objective for ammonia. . All samples analyzed against the acute and chronic criteria had available pH and temperature data which was used to calculate the criteria. The pH values ranged from 7.7 to 8.9 and the temperature values ranged from 12.7 to 31.0 C. Water quality samples were taken and analyzed for ammonia in accordance with the Long Beach Waste Water Reclamation Plant permit monitoring and testing parameters. | ||||
Data Reference: | NPDES receiving water monitoring reports for Long Beach Water Reclamation Plant (NPDES No. CA0054119), Los Coyotes Water Reclamation Plant (NPDES No. CA0053716), Pomona Water Reclamation Plant (NPDES No. CA0053911), San Jose Creek Water Reclamation Plant (NPDES No. CA0053619), and Whittier Narrows Creek Water Reclamation Plant (NPDES No. CA0054011). | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Basin Plan states, "In order to protect aquatic life, ammonia concentrations in inland surface waters characteristic of freshwater shall not exceed the values calculated for the appropriate instream conditions shown in Tables 3-1 to 3-3." The one-hour average objective is dependent on pH and the presence or absence of early life stages of fish (ELS) but not temperature. The 30-day average objective is dependent on pH, temperature and ELS in Tables 3-1 to 3-3. The ammonia objectives and the pH and temperature dependent formulas are found in Attachment A of Regional Board Resolution No. 2002-011. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | The Sanitation Districts of Los Angeles County conducted sampling in Coyote Creek in the following receiving water monitoring stations: station RA1 located upstream of discharge from Long Beach Water Reclamation Plant; station RA located downstream of discharge from Long Beach Water Reclamation Plant; and station R9 East located at the downstream end of the pavement lining (near Atherton Street) in the eastern low flow channel of San Gabriel River. | ||||
Temporal Representation: | Grab samples were taken and analyzed on a weekly basis from December 2004 to January 2007. | ||||
Environmental Conditions: | |||||
QAPP Information: | Data was collected in compliance with the sampling and monitoring procedures detailed in Sanitation Districts of Los Angeles County (NPDES No. CA0054119) Monitoring and Reporting Program. | ||||
QAPP Information Reference(s): | Long Beach Water Reclamation Plant Monitoring and Reporting Program for NPDES No. CA0054119 (County Sanitation Districts of Los Angeles County) | ||||
|
|||||
LOE ID: | 27248 | ||||
Pollutant: | Ammonia | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Aquatic Life Use: | Freshwater Replenishment | Preservation of Rare & Endangered Species | Wildlife Habitat | ||||
Number of Samples: | 18 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) | ||||
Data Used to Assess Water Quality: | Zero of 18 samples exceeded the one-hour objective for ammonia. All samples analyzed against the acute criteria had available pH data which was used to calculate the criteria. The pH values ranged from 6.6 to 8.3. Water quality samples were taken and analyzed for ammonia in accordance with the County of Los Angeles MS4 Permit monitoring and testing parameters. | ||||
Data Reference: | Monitoring Report (MS4 Data) - CI 6948 for order no. 01-182 NPDES No. CAS004001 Municipal Storm Water and Urban Runoff Discharges within the County of Los Angeles, and the Incorporated Cities therein, Except the City of Long Beach | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Basin Plan states, "In order to protect aquatic life, ammonia concentrations in inland surface waters characteristic of freshwater shall not exceed the values calculated for the appropriate instream conditions shown in Tables 3-1 to 3-3." The one-hour average objective is dependent on pH and the presence or absence of early life stages of fish (ELS) but not temperature. The 30-day average objective is dependent on pH, temperature and ELS in Tables 3-1 to 3-3. The ammonia objectives and the pH and temperature dependent formula are found in Attachment A of Regional Board Resolution No. 2002-011. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | The Los Angeles County Department of Public Works conducted sampling at the mass emission monitoring station S13 located below Spring Street in Coyote Creek (Lat: 33.8098610175, Long: -118.077061937). | ||||
Temporal Representation: | Composite samples were taken approximately six per year (four wet-weather events and two dry-weather events), from October 2003 through April 2007. | ||||
Environmental Conditions: | |||||
QAPP Information: | Data was collected in compliance with the sampling and monitoring procedures detailed in County of Los Angeles MS4 Permit (NPDES No. CAS004001) Monitoring and Reporting Program. | ||||
QAPP Information Reference(s): | Monitoring and Reporting Program - CI 6948 for order no. 01-182 NPDES No. CAS004001 Municipal Storm Water and Urban Runoff Discharges within the County of Los Angeles, and the incorporated cities, except the City of Long Beach | ||||
|
|||||
LOE ID: | 2431 | ||||
Pollutant: | Ammonia | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 18 | ||||
Number of Exceedances: | 10 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Based on 30-day average concentrations of ammonia, 10 samples out of 18 total samples exceed the ammonia objective. Ambient measurements of pH and temperature (30-day averages) were used to calculate the water quality objective (LACSD, 2004a). | ||||
Data Reference: | Placeholder reference 2006 303(d) | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | In order to protect aquatic life, ammonia concentrations in inland surface waters characteristic of freshwater shall not exceed the values calculated for the appropriate instream conditions [both pH and temperature] shown in Tables 3-1 to 3-3 [in the Basin Plan] (per U.S. EPA's most recent criteria guidance document, '1999 Update of Ambient Water Quality Criteria for Ammonia'). | ||||
Objective/Criterion Reference: | Placeholder reference 2006 303(d) | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Three stations. | ||||
Temporal Representation: | Samples were collected from June 2003 through November 2004. New management practices were begun at the beginning of this period and may have resulted in a change in water quality. Water quality measurements collected before the implementation of management measures were not considered representative of current conditions. | ||||
Environmental Conditions: | |||||
QAPP Information: | NPDES quality assurance. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 83863 | ||||
Pollutant: | Nitrogen, ammonia (Total Ammonia) | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 260 | ||||
Number of Exceedances: | 9 | ||||
Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) | ||||
Data Used to Assess Water Quality: | 9 of 260 samples exceed the site-specific objective for ammonia. | ||||
Data Reference: | Data for Various Pollutants in Various Water Bodies in Sanitation Districts of Los Angeles County, 2005-2010. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Los Angeles Regional Water Quality Control Plan 30-day site specific objective for total ammonia as nitrogen is a function of pH, temperature, and the presence of early life stages. The site specific objective for Coyote Creek (Long Beach WRP to confluence with San Gabriel River) has early life stages absent year round. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Samples were collected at three sites: Station LB-RA-1 is located just downstream of the Willow Street overpass and upstream of the LBWRP outfall, Station LB-RA is located 600 feet downstream the LBWRP outfall, and Station LB-RA1B is located 100 feet downstream the LBWRP outfall. | ||||
Temporal Representation: | LB-RA-1 and LB-RA samples were collected from June 2005 to October 2009. LB-RA1B samples were collected from Nov 2007 to October 2009. | ||||
Environmental Conditions: | |||||
QAPP Information: | Samples were collected as part of an NPDES permit requirement. Receiving water data collected to represent the water body as a whole. No QAPP was submitted but an unsigned field manual was. | ||||
QAPP Information Reference(s): | |||||
DECISION ID |
132554 |
Region 4 |
Coyote Creek |
||
Pollutant: | Iron |
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: | 2027 |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for removal from the CWA section 303(d) List under section 4.1 of the Listing Policy. Under section 4.1 a single line of evidence is necessary to assess listing status. Nine lines of evidence are available in the administrative record to assess this pollutant. Several lines of evidence have been removed from the decision because they are for dissolved iron and are from samples for which total iron data are provided. The criterion is for total iron. Dissolved iron can be used as a proxy for total iron in showing exceedances, because if the dissolved fraction exceeds the criterion for total iron, the amount of total iron would exceed as well. Similarly, LOE ID 83855, which was used to show impairment, is reported as "total dissolved" and the fraction cannot be verified from the raw data. This LOE was originally interpreted as a dissolved fraction and it cannot be added to the LOEs for total iron. In light of this and more recent data for total iron, LOE ID 83855 will not be considered. The data provider has indicated that data reported without a fraction, and interpreted by the assessment database as "not reported", are for the total fraction. The LOEs for total and not reported have been summed. 11 of 68 samples exceeded the criteria for total iron in water. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against removing this water segment-pollutant combination from the CWA section 303(d) List. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. 11 of 68 samples exceeded the CRITERIA and this exceeds the allowable frequency listed in Table 4.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be 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: | 83855 | ||||
Pollutant: | Iron | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total Dissolved | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 23 | ||||
Number of Exceedances: | 3 | ||||
Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) | ||||
Data Used to Assess Water Quality: | Three of the 23 samples exceeded the criteria of 1,000 ug/L. | ||||
Data Reference: | Data for Various Pollutants in Various Water Bodies in Sanitation Districts of Los Angeles County, 2005-2010. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Surface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | National Recommended Water Quality Criteria Continuous Concentrations are intended protect aquatic organisms from chronic exposures (expressed as 4-day average concentration) in freshwater. The evaluation guideline for iron is 1,000 ug/L to protect warm freshwater habitat. | ||||
Guideline Reference: | National Recommended Water Quality Criteria. United States Environmental Protection Agency. Office of Water. Office of Science and Technology | ||||
Spatial Representation: | Samples were collected from Coyote Creek from location LB also called SG at three sublocations: RA, RA1, and RA1B. | ||||
Temporal Representation: | Samples were collected monthly from June 2006 through May of 2010. | ||||
Environmental Conditions: | |||||
QAPP Information: | The Biology Department of the San Jose Creek Water Quality Laboratory is responsible for collecting samples from receiving water stations along the San Gabriel River, Coyote Creek, San Jose Creek, Santa Clara River, and the Rio Hondo River. Data is collected for the Los Angeles Sanitation District NPDES permits. Some standard operating procedures for sampling were submitted, however no QA Project Plan was. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 298289 | ||||
Pollutant: | Iron | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 2 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed San Gabriel River Regional Monitoring Program data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 2 samples exceeded the water quality threshold for Iron. | ||||
Data Reference: | Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan for the Los Angeles Region states that: Surface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | National Recommended Water Quality Criteria Continuous Concentrations are intended protect freshwater aquatic organisms from chronic exposures and are expressed as 4-day average concentrations. The evaluation guideline for Iron is 1,000 ug/L. | ||||
Guideline Reference: | National Recommended Water Quality Criteria. United States Environmental Protection Agency. Office of Water. Current as of 08/03/2016. | ||||
Spatial Representation: | The samples were collected at 1 monitoring site: SMC01278_SGRRMP (SGLR01278_SGRRMP). | ||||
Temporal Representation: | The samples were collected between the dates of 2016-06-23 and 2017-07-19 | ||||
Environmental Conditions: | |||||
QAPP Information: | Aquatic Bioassay & Consulting Laboratories. 2019. San Gabriel River Regional Monitoring Program. | ||||
QAPP Information Reference(s): | San Gabriel River Regional Monitoring Program | ||||
|
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LOE ID: | 298211 | ||||
Pollutant: | Iron | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 19 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed eSMR_Long Beach WRP data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 19 samples exceeded the water quality threshold for Iron. | ||||
Data Reference: | WQ data from the California Integrated Water Quality System (CIWQS) assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan for the Los Angeles Region states that: Surface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | National Recommended Water Quality Criteria Continuous Concentrations are intended protect freshwater aquatic organisms from chronic exposures and are expressed as 4-day average concentrations. The evaluation guideline for Iron is 1,000 ug/L. | ||||
Guideline Reference: | National Recommended Water Quality Criteria. United States Environmental Protection Agency. Office of Water. Current as of 08/03/2016. | ||||
Spatial Representation: | The samples were collected at 1 monitoring site: 658086 (RSW-002). | ||||
Temporal Representation: | The samples were collected between the dates of 2011-07-11 and 2020-07-09 | ||||
Environmental Conditions: | |||||
QAPP Information: | Los Angeles County Sanitation Districts. 2020. Los Angeles County Sanitation Districts Receiving Water Monitoring Program. | ||||
QAPP Information Reference(s): | Los Angeles County Sanitation Districts Receiving Water Monitoring Program | ||||
|
|||||
LOE ID: | 298286 | ||||
Pollutant: | Iron | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 19 | ||||
Number of Exceedances: | 7 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed Santa Ana Region Monitoring data for Coyote Creek to determine beneficial use support and results are as follows: 7 of 19 samples exceeded the water quality threshold for Iron. | ||||
Data Reference: | WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan for the Los Angeles Region states that: Surface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | National Recommended Water Quality Criteria Continuous Concentrations are intended protect freshwater aquatic organisms from chronic exposures and are expressed as 4-day average concentrations. The evaluation guideline for Iron is 1,000 ug/L. | ||||
Guideline Reference: | National Recommended Water Quality Criteria. United States Environmental Protection Agency. Office of Water. Current as of 08/03/2016. | ||||
Spatial Representation: | The samples were collected at 1 monitoring site: CCBA01 (Coyote Creek @ Artesia Blvd). | ||||
Temporal Representation: | The samples were collected between the dates of 2014-09-15 and 2020-03-11 | ||||
Environmental Conditions: | |||||
QAPP Information: | OCSP QAMP. 2010. QUALITY ASSURANCE MANAGEMENT PLAN The Orange County Stormwater Program. | ||||
QAPP Information Reference(s): | QUALITY ASSURANCE MANAGEMENT PLAN The Orange County Stormwater Program | ||||
|
|||||
LOE ID: | 298287 | ||||
Pollutant: | Iron | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 6 | ||||
Number of Exceedances: | 1 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed OCPW Santa Ana Region TMDL Programs data for Coyote Creek to determine beneficial use support and results are as follows: 1 of 6 samples exceeded the water quality threshold for Iron. | ||||
Data Reference: | WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan for the Los Angeles Region states that: Surface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | National Recommended Water Quality Criteria Continuous Concentrations are intended protect freshwater aquatic organisms from chronic exposures and are expressed as 4-day average concentrations. The evaluation guideline for Iron is 1,000 ug/L. | ||||
Guideline Reference: | National Recommended Water Quality Criteria. United States Environmental Protection Agency. Office of Water. Current as of 08/03/2016. | ||||
Spatial Representation: | The samples were collected at 1 monitoring site: CCBA01 (Coyote Creek @ Artesia Blvd). | ||||
Temporal Representation: | The samples were collected between the dates of 2014-07-18 and 2015-06-30 | ||||
Environmental Conditions: | |||||
QAPP Information: | OCPW Santa Ana Region TMDL Programs. 2010. QAPP for The Orange County Stormwater Program. | ||||
QAPP Information Reference(s): | QAPP for The Orange County Stormwater Program | ||||
|
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LOE ID: | 298127 | ||||
Pollutant: | Iron | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 1 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed LA County MS4 data for Coyote Creek to determine beneficial use support and results are as follows: 1 of 1 samples exceeded the water quality threshold for Iron. | ||||
Data Reference: | WQ data from the MS4 database assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan for the Los Angeles Region states that: Surface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | National Recommended Water Quality Criteria Continuous Concentrations are intended protect freshwater aquatic organisms from chronic exposures and are expressed as 4-day average concentrations. The evaluation guideline for Iron is 1,000 ug/L. | ||||
Guideline Reference: | National Recommended Water Quality Criteria. United States Environmental Protection Agency. Office of Water. Current as of 08/03/2016. | ||||
Spatial Representation: | The samples were collected at 1 monitoring site: LSGR-S13 (Coyote Creek at Spring St). | ||||
Temporal Representation: | The samples were collected between the dates of 2015-12-14 and 2015-12-14 | ||||
Environmental Conditions: | |||||
QAPP Information: | Municipal Separate Storm Sewer System (MS4) | ||||
QAPP Information Reference(s): | Municipal Separate Storm Sewer System (MS4) | ||||
|
|||||
LOE ID: | 298209 | ||||
Pollutant: | Iron | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Not Recorded | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 19 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed eSMR_Long Beach WRP data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 19 samples exceeded the water quality threshold for Iron. | ||||
Data Reference: | WQ data from the California Integrated Water Quality System (CIWQS) assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan for the Los Angeles Region states that: Surface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | National Recommended Water Quality Criteria Continuous Concentrations are intended protect freshwater aquatic organisms from chronic exposures and are expressed as 4-day average concentrations. The evaluation guideline for Iron is 1,000 ug/L. | ||||
Guideline Reference: | National Recommended Water Quality Criteria. United States Environmental Protection Agency. Office of Water. Current as of 08/03/2016. | ||||
Spatial Representation: | The samples were collected at 1 monitoring site: 658085 (RSW-001). | ||||
Temporal Representation: | The samples were collected between the dates of 2011-07-11 and 2020-07-09 | ||||
Environmental Conditions: | |||||
QAPP Information: | Los Angeles County Sanitation Districts. 2020. Los Angeles County Sanitation Districts Receiving Water Monitoring Program. | ||||
QAPP Information Reference(s): | Los Angeles County Sanitation Districts Receiving Water Monitoring Program | ||||
|
|||||
LOE ID: | 298212 | ||||
Pollutant: | Iron | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 19 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed eSMR_Long Beach WRP data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 19 samples exceeded the water quality threshold for Iron. | ||||
Data Reference: | WQ data from the California Integrated Water Quality System (CIWQS) assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan for the Los Angeles Region states that: Surface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | National Recommended Water Quality Criteria Continuous Concentrations are intended protect freshwater aquatic organisms from chronic exposures and are expressed as 4-day average concentrations. The evaluation guideline for Iron is 1,000 ug/L. | ||||
Guideline Reference: | National Recommended Water Quality Criteria. United States Environmental Protection Agency. Office of Water. Current as of 08/03/2016. | ||||
Spatial Representation: | The samples were collected at 1 monitoring site: 658085 (RSW-001). | ||||
Temporal Representation: | The samples were collected between the dates of 2011-07-11 and 2020-07-09 | ||||
Environmental Conditions: | |||||
QAPP Information: | Los Angeles County Sanitation Districts. 2020. Los Angeles County Sanitation Districts Receiving Water Monitoring Program. | ||||
QAPP Information Reference(s): | Los Angeles County Sanitation Districts Receiving Water Monitoring Program | ||||
|
|||||
LOE ID: | 298293 | ||||
Pollutant: | Iron | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 19 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed Santa Ana Region Monitoring data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 19 samples exceeded the water quality threshold for Iron. | ||||
Data Reference: | WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan for the Los Angeles Region states that: Surface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | National Recommended Water Quality Criteria Continuous Concentrations are intended protect freshwater aquatic organisms from chronic exposures and are expressed as 4-day average concentrations. The evaluation guideline for Iron is 1,000 ug/L. | ||||
Guideline Reference: | National Recommended Water Quality Criteria. United States Environmental Protection Agency. Office of Water. Current as of 08/03/2016. | ||||
Spatial Representation: | The samples were collected at 1 monitoring site: CCBA01 (Coyote Creek @ Artesia Blvd). | ||||
Temporal Representation: | The samples were collected between the dates of 2014-09-15 and 2020-03-11 | ||||
Environmental Conditions: | |||||
QAPP Information: | OCSP QAMP. 2010. QUALITY ASSURANCE MANAGEMENT PLAN The Orange County Stormwater Program. | ||||
QAPP Information Reference(s): | QUALITY ASSURANCE MANAGEMENT PLAN The Orange County Stormwater Program | ||||
|
|||||
LOE ID: | 298122 | ||||
Pollutant: | Iron | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 1 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed LA County MS4 data for Pacific Ocean Shoreline, Aliso HSA, at Blue Lagoon to determine beneficial use support and results are as follows: 1 of 1 samples exceeded the water quality threshold for Iron. | ||||
Data Reference: | WQ data from the MS4 database assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan for the Los Angeles Region states that: Surface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | National Recommended Water Quality Criteria Continuous Concentrations are intended protect freshwater aquatic organisms from chronic exposures and are expressed as 4-day average concentrations. The evaluation guideline for Iron is 1,000 ug/L. | ||||
Guideline Reference: | National Recommended Water Quality Criteria. United States Environmental Protection Agency. Office of Water. Current as of 08/03/2016. | ||||
Spatial Representation: | The samples were collected at 1 monitoring site: S13 (Coyote Creek @ Spring St. mass emission station). | ||||
Temporal Representation: | The samples were collected between the dates of 2015-12-14 and 2015-12-14 | ||||
Environmental Conditions: | |||||
QAPP Information: | Municipal Separate Storm Sewer System (MS4) | ||||
QAPP Information Reference(s): | Municipal Separate Storm Sewer System (MS4) | ||||
|
|||||
LOE ID: | 298213 | ||||
Pollutant: | Iron | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Not Recorded | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 19 | ||||
Number of Exceedances: | 1 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed eSMR_Long Beach WRP data for Coyote Creek to determine beneficial use support and results are as follows: 1 of 19 samples exceeded the water quality threshold for Iron. | ||||
Data Reference: | WQ data from the California Integrated Water Quality System (CIWQS) assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan for the Los Angeles Region states that: Surface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | National Recommended Water Quality Criteria Continuous Concentrations are intended protect freshwater aquatic organisms from chronic exposures and are expressed as 4-day average concentrations. The evaluation guideline for Iron is 1,000 ug/L. | ||||
Guideline Reference: | National Recommended Water Quality Criteria. United States Environmental Protection Agency. Office of Water. Current as of 08/03/2016. | ||||
Spatial Representation: | The samples were collected at 1 monitoring site: 658086 (RSW-002). | ||||
Temporal Representation: | The samples were collected between the dates of 2011-07-11 and 2020-07-09 | ||||
Environmental Conditions: | |||||
QAPP Information: | Los Angeles County Sanitation Districts. 2020. Los Angeles County Sanitation Districts Receiving Water Monitoring Program. | ||||
QAPP Information Reference(s): | Los Angeles County Sanitation Districts Receiving Water Monitoring Program | ||||
|
|||||
LOE ID: | 298290 | ||||
Pollutant: | Iron | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 6 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed OCPW Santa Ana Region TMDL Programs data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 6 samples exceeded the water quality threshold for Iron. | ||||
Data Reference: | WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan for the Los Angeles Region states that: Surface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | National Recommended Water Quality Criteria Continuous Concentrations are intended protect freshwater aquatic organisms from chronic exposures and are expressed as 4-day average concentrations. The evaluation guideline for Iron is 1,000 ug/L. | ||||
Guideline Reference: | National Recommended Water Quality Criteria. United States Environmental Protection Agency. Office of Water. Current as of 08/03/2016. | ||||
Spatial Representation: | The samples were collected at 1 monitoring site: CCBA01 (Coyote Creek @ Artesia Blvd). | ||||
Temporal Representation: | The samples were collected between the dates of 2014-07-18 and 2015-06-30 | ||||
Environmental Conditions: | |||||
QAPP Information: | OCPW Santa Ana Region TMDL Programs. 2010. QAPP for The Orange County Stormwater Program. | ||||
QAPP Information Reference(s): | QAPP for The Orange County Stormwater Program | ||||
|
|||||
LOE ID: | 298288 | ||||
Pollutant: | Iron | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 2 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed San Gabriel River Regional Monitoring Program data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 2 samples exceeded the water quality threshold for Iron. | ||||
Data Reference: | Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan for the Los Angeles Region states that: Surface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | National Recommended Water Quality Criteria Continuous Concentrations are intended protect freshwater aquatic organisms from chronic exposures and are expressed as 4-day average concentrations. The evaluation guideline for Iron is 1,000 ug/L. | ||||
Guideline Reference: | National Recommended Water Quality Criteria. United States Environmental Protection Agency. Office of Water. Current as of 08/03/2016. | ||||
Spatial Representation: | The samples were collected at 1 monitoring site: SMC01278_SGRRMP (SGLR01278_SGRRMP). | ||||
Temporal Representation: | The samples were collected between the dates of 2016-06-23 and 2017-07-19 | ||||
Environmental Conditions: | |||||
QAPP Information: | Aquatic Bioassay & Consulting Laboratories. 2019. San Gabriel River Regional Monitoring Program. | ||||
QAPP Information Reference(s): | San Gabriel River Regional Monitoring Program | ||||
|
|||||
LOE ID: | 298116 | ||||
Pollutant: | Iron | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed LA County MS4 data for Pacific Ocean Shoreline, Aliso HSA, at Blue Lagoon to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Iron. | ||||
Data Reference: | WQ data from the MS4 database assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan for the Los Angeles Region states that: Surface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | National Recommended Water Quality Criteria Continuous Concentrations are intended protect freshwater aquatic organisms from chronic exposures and are expressed as 4-day average concentrations. The evaluation guideline for Iron is 1,000 ug/L. | ||||
Guideline Reference: | National Recommended Water Quality Criteria. United States Environmental Protection Agency. Office of Water. Current as of 08/03/2016. | ||||
Spatial Representation: | The samples were collected at 1 monitoring site: S13 (Coyote Creek @ Spring St. mass emission station). | ||||
Temporal Representation: | The samples were collected between the dates of 2015-12-14 and 2015-12-14 | ||||
Environmental Conditions: | |||||
QAPP Information: | Municipal Separate Storm Sewer System (MS4) | ||||
QAPP Information Reference(s): | Municipal Separate Storm Sewer System (MS4) | ||||
|
|||||
LOE ID: | 298132 | ||||
Pollutant: | Iron | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed LA County MS4 data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Iron. | ||||
Data Reference: | WQ data from the MS4 database assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan for the Los Angeles Region states that: Surface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | National Recommended Water Quality Criteria Continuous Concentrations are intended protect freshwater aquatic organisms from chronic exposures and are expressed as 4-day average concentrations. The evaluation guideline for Iron is 1,000 ug/L. | ||||
Guideline Reference: | National Recommended Water Quality Criteria. United States Environmental Protection Agency. Office of Water. Current as of 08/03/2016. | ||||
Spatial Representation: | The samples were collected at 1 monitoring site: LSGR-S13 (Coyote Creek at Spring St). | ||||
Temporal Representation: | The samples were collected between the dates of 2015-12-14 and 2015-12-14 | ||||
Environmental Conditions: | |||||
QAPP Information: | Municipal Separate Storm Sewer System (MS4) | ||||
QAPP Information Reference(s): | Municipal Separate Storm Sewer System (MS4) | ||||
|
|||||
LOE ID: | 298291 | ||||
Pollutant: | Iron | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed SWAMP RWB8 Monitoring data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Iron. | ||||
Data Reference: | Field, Habitat, Toxicity, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan for the Los Angeles Region states that: Surface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | National Recommended Water Quality Criteria Continuous Concentrations are intended protect freshwater aquatic organisms from chronic exposures and are expressed as 4-day average concentrations. The evaluation guideline for Iron is 1,000 ug/L. | ||||
Guideline Reference: | National Recommended Water Quality Criteria. United States Environmental Protection Agency. Office of Water. Current as of 08/03/2016. | ||||
Spatial Representation: | The samples were collected at 1 monitoring site: 845RB8633 (Coyote Creek Random Olsen Site 633). | ||||
Temporal Representation: | The samples were collected between the dates of 2013-07-08 and 2013-07-08 | ||||
Environmental Conditions: | |||||
QAPP Information: | SWRCB. 2018. This is a placeholder reference for data that 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 |
132557 |
Region 4 |
Coyote Creek |
||
Pollutant: | Malathion |
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: | 2027 |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for removal from the CWA section 303(d) List under section 4.1 of the Listing Policy. Under this section a single line of evidence is necessary to assess listing status. 2 lines of evidence are available in the administrative record to assess pollutant. 2 of the 19 "Total" fraction samples exceed the criteria. 5 of the 5 "Not Recorded" fraction samples exceed the criteria. LOE ID 83858 was removed from this assessment and the LOE data were reassessed in LOE ID 316367 with the UC Davis Aquatic Life Criteria for malathion. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against removing this water segment-pollutant combination from the CWA section 303(d) List. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. 2 of 19 and 5 of 5 samples exceeded the WARM beneficial use criteria and this exceeds the allowable frequency listed in Table 4.1 of the Listing Policy. 4. Pursuant to section 4.11 of the Listing Policy, no additional data and information are available indicating that standards are met. |
Regional Board Decision Recommendation: | Decision written by SWRCB staff. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be removed from the section 303(d) list because applicable water quality standards for the pollutant are being exceeded. |
|
|||||
LOE ID: | 316367 | ||||
Pollutant: | Malathion | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Not Recorded | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 5 | ||||
Number of Exceedances: | 5 | ||||
Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) | ||||
Data Used to Assess Water Quality: | Water Board staff assessed Orange County NPDES Monitoring Program data for Coyote Creek to determine beneficial use support and results are as follows: 5 of 5 samples exceeded the water quality threshold for Malathion. Although a total of 26 samples were collected, 17 of these samples were not included in the assessment because the results were unquantified and could not be interpreted. Averaging of some of the remaining 9 samples were required when the samples were collected within 4 days of each other. This resulted in a total of 5 samples available for assessment. | ||||
Data Reference: | Data for Various Waterbodies in Region 8 and Region 9, 2006-2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | Aquatic life should not be affected unacceptably if the 4-day average concentration of malathion does not exceed 0.028 ug/L (UC Davis Aquatic Life Criteria). | ||||
Guideline Reference: | Aquatic life water quality criteria derived via the UC Davis method: l. Organophosphate insecticides. Reviews of Environmental Contamination and Toxicology 216:1-48. | ||||
Spatial Representation: | Samples were collected at site: CCBA01 | ||||
Temporal Representation: | Samples were collected from 2006 to 2009. | ||||
Environmental Conditions: | According to the County of Orange Stormwater Program Quality Assurance Management Plan (QAMP) dated January 2010, samples were collected during the dry season and storm events. | ||||
QAPP Information: | Data were submitted with the County of Orange Stormwater Program Quality Assurance Management Plan (QAMP) dated January 2010. However, data were collected prior to the development of this QAMP, therefore the quality of these data are unknown. | ||||
QAPP Information Reference(s): | QUALITY ASSURANCE MANAGEMENT PLAN The Orange County Stormwater Program | ||||
|
|||||
LOE ID: | 298296 | ||||
Pollutant: | Malathion | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 19 | ||||
Number of Exceedances: | 2 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed Santa Ana Region Monitoring data for Coyote Creek to determine beneficial use support and results are as follows: 2 of 19 samples exceeded the water quality threshold for Malathion. | ||||
Data Reference: | WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | Aquatic life should not be affected unacceptably if the 4-day average concentration of malathion does not exceed 0.028 ug/L (UC Davis Aquatic Life Criteria). | ||||
Guideline Reference: | Aquatic life water quality criteria derived via the UC Davis method: l. Organophosphate insecticides. Reviews of Environmental Contamination and Toxicology 216:1-48. | ||||
Spatial Representation: | The samples were collected at 1 monitoring site: CCBA01 (Coyote Creek @ Artesia Blvd). | ||||
Temporal Representation: | The samples were collected between the dates of 2014-09-15 and 2019-11-20 | ||||
Environmental Conditions: | |||||
QAPP Information: | OCSP QAMP. 2010. QUALITY ASSURANCE MANAGEMENT PLAN The Orange County Stormwater Program. | ||||
QAPP Information Reference(s): | QUALITY ASSURANCE MANAGEMENT PLAN The Orange County Stormwater Program | ||||
DECISION ID |
132573 |
Region 4 |
Coyote Creek |
||
Pollutant: | Toxicity |
Final Listing Decision: | Do Not Delist from 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | Do Not Delist from 303(d) list (TMDL required list)(2018) |
Revision Status | Revised |
Sources: | A Source Unknown |
Expected TMDL Completion Date: | 2008 |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for removal from the CWA section 303(d) List under section 4.1 of the Listing Policy. Under this section a single line of evidence is necessary to assess listing status. 1 line of evidence is available in the administrative record to assess pollutant. 25 of the 114 samples exceed the GUIDELINE. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against removing this water segment-pollutant combination from the CWA section 303(d) List. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. 25 of 114 samples exceeded the GUIDELINE and this exceeds the allowable frequency listed in Table 4.1 of the Listing Policy. 4. Pursuant to section 4.11 of the Listing Policy, no additional data and information are available indicating that standards are met. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be removed from the section 303(d) list because applicable water quality standards for the pollutant are being exceeded. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 298094 | ||||
Pollutant: | Toxicity | ||||
LOE Subgroup: | Toxicity | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | TOXICITY TESTING | ||||
Data Used to Assess Water Quality: | 0 of the 1 samples collected by SWAMP RWB8 Monitoring for Coyote Creek exhibited toxicity. A sample may have multiple toxicity test results, but will only be counted once. A sample is defined as being collected on the same day and the same location. The following organisms and parameters were utilized for the toxicity tests: Ceriodaphnia dubia for Survival, Ceriodaphnia dubia for Young/female. | ||||
Data Reference: | Field, Habitat, Toxicity, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | The sample is toxic when the response of the organisms exposed to the sample is significantly different (worse) than the response of the organisms exposed to the laboratory control based on statistical hypothesis testing. An exceedance is counted when the significant effect code is “Significant; Less Similarity,” which means that the sample result is significantly different than the control result, and the percent effect is greater than the evaluation threshold. The default evaluation threshold is 20% unless otherwise stated. | ||||
Guideline Reference: | Short-term Methods for Estimating the Chronic Toxicity of Effluents and Receiving Waters to Freshwater Organisms. Fourth Edition. Office of Water, U.S. Environmental Protection Agency. Washington, D.C. EPA-821-R-02-013 | ||||
Spatial Representation: | The samples were collected at monitoring site: 845CTC480 ( Coyote Creek Random Olsen Site 480 ). | ||||
Temporal Representation: | The samples were collected between the dates of 2012-06-19 and 2012-06-19. | ||||
Environmental Conditions: | |||||
QAPP Information: | SWRCB. 2018. This is a placeholder reference for data that 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. | ||||
|
|||||
LOE ID: | 83878 | ||||
Pollutant: | Toxicity | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 73 | ||||
Number of Exceedances: | 13 | ||||
Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) | ||||
Data Used to Assess Water Quality: | Toxicity data was not reported with a control, therefore anything reported as < 100 (chronic) or <100% survival (acute) was considered an exceedance. Seven of the 48 fathead minnow chronic-survival tests were less than 100% and eight of the 48 fathead minnow chronic-growth were less than 100; these were grouped to make a total of eight of 48 exceedances. The ceriodaphnia chronic survival and reproductive tests were reported at 100 (0 of 2 exceedances). Five of the 25 acute tests on the fathead minnow were at 100% survival (5 of 25 exceedances). | ||||
Data Reference: | Data for Various Pollutants in Various Water Bodies in Sanitation Districts of Los Angeles County, 2005-2010. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Toxic pollutants shall not be present at levels that will bioaccumulate in aquatic life to levels which are harmful to aquatic life or human health. No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. There shall be no bioaccumulation of pesticide concentrations found in bottom sediments or aquatic life. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Objective/Criterion Reference: | California Ocean Plan Water Quality Control Plan Ocean Waters of California 2009 | ||||
Evaluation Guideline: | Statistically significant difference from control using a t-test or other valid statistical tests. | ||||
Guideline Reference: | Short-term Methods for Estimating the Chronic Toxicity of Effluents and Receiving Waters to Freshwater Organisms. Fourth Edition. Office of Water, U.S. Environmental Protection Agency. Washington, D.C. EPA-821-R-02-013 | ||||
Spatial Representation: | Samples were collected from Long Beach Station RSW-001 (RA-1/RA-1B) and Long Beach Station RSW-002 (RA). | ||||
Temporal Representation: | Samples were collected quarterly from 2005 through 2009. | ||||
Environmental Conditions: | |||||
QAPP Information: | The Biology Department of the San Jose Creek Water Quality Laboratory is responsible for collecting samples from receiving water stations along the San Gabriel River, Coyote Creek, San Jose Creek, Santa Clara River, and the Rio Hondo River. Data is collected for the Los Angeles Sanitation District NPDES permits. Some standard operating procedures for sampling were submitted, however no QA Project Plan was. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 4096 | ||||
Pollutant: | Toxicity | ||||
LOE Subgroup: | Toxicity | ||||
Matrix: | Water | ||||
Fraction: | Not Recorded | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 0 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | Not Specified | ||||
Data Used to Assess Water Quality: | Unspecified--This LOE is a placeholder to support a 303(d) listing decision made prior to 2006. | ||||
Data Reference: | Placeholder reference pre-2006 303(d) | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | |||||
Objective/Criterion Reference: | |||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Unspecified | ||||
Temporal Representation: | Unspecified | ||||
Environmental Conditions: | Unspecified | ||||
QAPP Information: | Unspecified | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 83879 | ||||
Pollutant: | Toxicity | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Not Recorded | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 13 | ||||
Number of Exceedances: | 2 | ||||
Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) | ||||
Data Used to Assess Water Quality: | Two of the thirteen Chronic Sea Urchin (Strongylocentrotus purpuratus) fertilization tests were reported with TU >1. Three of the samples had TU reported as <2, these samples were not used in the assessment because it is not known if the sample was toxic. | ||||
Data Reference: | Data for Various Pollutants in Los Angeles County Flood Control District, 2006-2010. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | The chronic toxicity of the effluent is expressed and reported in Chronic Toxic Units, where,TUc = 100/NOEC or LC50 or EC50, as determined by the results of a critical lifestage toxicity. Toxicity is usually defined as the statistically significant difference from control using a t-test or other valid statistical tests. Since these toxicity data were submitted without a control, toxicity was determined as any sample where the TU was greater than 1. | ||||
Guideline Reference: | Short-term Methods for Estimating the Chronic Toxicity of Effluents and Receiving Waters to Freshwater Organisms. Fourth Edition. Office of Water, U.S. Environmental Protection Agency. Washington, D.C. EPA-821-R-02-013 | ||||
Spatial Representation: | Samples were collected from Coyote Creek @ Spring St. (sample station S13). | ||||
Temporal Representation: | Samples were collected in 2009-2010 from dry weather events No. 12 and 28 and from wet weather events No. 13 and 19. Samples were collected in 2008-2009 from dry weather events No. 15 and 30 and from wet weather events No. 3 and 21. Samples were collected in 2007 - 2008 from dry weather events No. 27 and 47 and from wet weather events No. 21 and 30. Samples were collected in 2006 - 2007 from dry weather events on 11/1/2006 and 4/2/2007 and from wet weather events 12/9/2006 and 2/10/2007. | ||||
Environmental Conditions: | Samples from two storm events(including the first storm of each year) and two dry weather events every year. Water are near an estuary so could be considered fresh or saline. Both types of species were used to test toxicity. | ||||
QAPP Information: | Data were collected in accordance with NPDES permit No. CAS004001, Order No. 01-182. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 83877 | ||||
Pollutant: | Toxicity | ||||
LOE Subgroup: | Toxicity | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 11 | ||||
Number of Exceedances: | 10 | ||||
Data and Information Type: | TOXICITY TESTING | ||||
Data Used to Assess Water Quality: | Eleven samples were collected to evaluate water toxicity. Ten of the 11 samples exhibited significant toxicity. The toxicity tests that exhibited significant toxicity included Mysid Survival, Ceriodaphnia Reproduction, Purple Urchin development and Selenastrum. | ||||
Data Reference: | Data for Various Waterbodies in Region 8 and Region 9, 2006-2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Toxic substances shall not be discharged at levels that will bioaccumulate in aquatic resources to levels which are harmful to human health. Region 8 Basin Plan. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | Toxicity is defined as a statistically significant effect in the sample exposure compared to the control using EPA-recommended hypothesis testing. The t-test is used to determine if there is a statistically significant decrease in organism response in the sample as compared to the control. | ||||
Guideline Reference: | Short-term Methods for Estimating the Chronic Toxicity of Effluents and Receiving Waters to Freshwater Organisms. Fourth Edition. Office of Water, U.S. Environmental Protection Agency. Washington, D.C. EPA-821-R-02-013 | ||||
Spatial Representation: | The samples were collected at station CCBA01-Coyote Creek. | ||||
Temporal Representation: | The samples were collected approximately quarterly from 2006 to 2009. | ||||
Environmental Conditions: | This site is currently mapped to Region 4 but should be moved to Region 8. | ||||
QAPP Information: | The data collected under the Quality Assurance Management Plan for The Orange County Stormwater Program. The SWAMP measurement quality objectives were followed for toxicity data. The performance of toxicity bioassays and evaluation of reference toxicants were performed using USEPA and Standard Methods. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 83880 | ||||
Pollutant: | Toxicity | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Not Recorded | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 16 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) | ||||
Data Used to Assess Water Quality: | None of the sixteen of the Ceriodaphnia dubia (water flea) 7-day survival/reproduction were reported with TU >1. | ||||
Data Reference: | Data for Various Pollutants in Los Angeles County Flood Control District, 2006-2010. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | The chronic toxicity of the effluent is expressed and reported in Chronic Toxic Units, where,TUc = 100/NOEC or LC50 or EC50, as determined by the results of a critical lifestage toxicity. Toxicity is usually defined as the statistically significant difference from control using a t-test or other valid statistical tests. Since these toxicity data were submitted without a control, toxicity was determined as any sample where the TU was greater than 1. | ||||
Guideline Reference: | Short-term Methods for Estimating the Chronic Toxicity of Effluents and Receiving Waters to Freshwater Organisms. Fourth Edition. Office of Water, U.S. Environmental Protection Agency. Washington, D.C. EPA-821-R-02-013 | ||||
Spatial Representation: | Samples were collected from Coyote Creek @ Spring St. (sample station S13). | ||||
Temporal Representation: | Samples were collected in 2009-2010 from dry weather events No. 14 and 28, not No. 12 and 28. Please change the Temporal Representation to Samples were collected in 2009-2010 from dry weather events No. 14 and 28 and from wet weather events No. 13 and 19. Samples were collected in 2008-2009 from dry weather events No. 15 and 30 and from wet weather events No. 3 and 21. Samples were collected in 2007 - 2008 from dry weather events No. 27 and 47 and from wet weather events No. 21 and 30. Samples were collected in 2006 - 2007 from dry weather events on 11/1/2006 and 4/2/2007 and from wet weather events 12/9/2006 and 2/10/2007. | ||||
Environmental Conditions: | Samples from two storm events(including the first storm of each year) and two dry weather events every year. Water are near an estuary so could be considered fresh or saline. Both types of species were used to test toxicity. | ||||
QAPP Information: | Data were collected in accordance with NPDES permit No. CAS004001, Order No. 01-182. | ||||
QAPP Information Reference(s): | |||||
DECISION ID |
132566 |
Region 4 |
Coyote Creek |
||
Pollutant: | pH |
Final Listing Decision: | Do Not Delist from 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | Do Not Delist from 303(d) list (TMDL required list)(2018) |
Revision Status | Revised |
Sources: | A Source Unknown |
Expected TMDL Completion Date: | 2019 |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for removal from the CWA section 303(d) List under section 4.2 of the Listing Policy. Under this section a single line of evidence is necessary to assess listing status. 11 lines of evidence are available in the administrative record to assess this pollutant. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against removing this water segment-pollutant combination from the CWA section 303(d) List. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. 43 of 125 and 292 of 805 samples exceeded the objective and this exceeds the allowable frequency listed in Table 4.2 of the Listing Policy. 4. Pursuant to section 4.11 of the Listing Policy, no additional data and information are available indicating that standards are met. |
Regional Board Decision Recommendation: | Decision written by SWRCB staff. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be removed from the section 303(d) list because applicable water quality standards for the pollutant are being exceeded. |
|
|||||
LOE ID: | 298233 | ||||
Pollutant: | pH | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 112 | ||||
Number of Exceedances: | 65 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed eSMR_Long Beach WRP data for Coyote Creek to determine beneficial use support and results are as follows: 65 of 112 samples exceeded the water quality threshold for pH. | ||||
Data Reference: | WQ data from the California Integrated Water Quality System (CIWQS) assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Water Quality Control Plan, Los Angeles Basin: the pH for inland surface waters, bays, or estuaries shall not be depressed below 6.5 or raised above 8.5 as a result of waste discharges. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | The samples were collected at 1 monitoring site: 658085 (RSW-001). | ||||
Temporal Representation: | The samples were collected between the dates of 2011-06-01 and 2020-09-16 | ||||
Environmental Conditions: | |||||
QAPP Information: | Los Angeles County Sanitation Districts. 2020. Los Angeles County Sanitation Districts Receiving Water Monitoring Program. | ||||
QAPP Information Reference(s): | Los Angeles County Sanitation Districts Receiving Water Monitoring Program | ||||
|
|||||
LOE ID: | 298231 | ||||
Pollutant: | pH | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 126 | ||||
Number of Exceedances: | 12 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed eSMR_Long Beach WRP data for Coyote Creek to determine beneficial use support and results are as follows: 12 of 126 samples exceeded the water quality threshold for pH. | ||||
Data Reference: | WQ data from the California Integrated Water Quality System (CIWQS) assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Water Quality Control Plan, Los Angeles Basin: the pH for inland surface waters, bays, or estuaries shall not be depressed below 6.5 or raised above 8.5 as a result of waste discharges. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | The samples were collected at 1 monitoring site: 658086 (RSW-002). | ||||
Temporal Representation: | The samples were collected between the dates of 2011-06-01 and 2020-10-12 | ||||
Environmental Conditions: | |||||
QAPP Information: | Los Angeles County Sanitation Districts. 2020. Los Angeles County Sanitation Districts Receiving Water Monitoring Program. | ||||
QAPP Information Reference(s): | Los Angeles County Sanitation Districts Receiving Water Monitoring Program | ||||
|
|||||
LOE ID: | 298304 | ||||
Pollutant: | pH | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 2 | ||||
Number of Exceedances: | 1 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed SWAMP RWB8 Monitoring data for Coyote Creek to determine beneficial use support and results are as follows: 1 of 2 samples exceeded the water quality threshold for pH. | ||||
Data Reference: | Field, Habitat, Toxicity, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | Water Quality Control Plan, Los Angeles Basin: the pH for inland surface waters, bays, or estuaries shall not be depressed below 6.5 or raised above 8.5 as a result of waste discharges. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | The samples were collected at 1 monitoring site: 845RB8633 (Coyote Creek Random Olsen Site 633). | ||||
Temporal Representation: | The samples were collected between the dates of 2011-07-26 and 2013-07-08 | ||||
Environmental Conditions: | |||||
QAPP Information: | SWRCB. 2018. This is a placeholder reference for data that 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. | ||||
|
|||||
LOE ID: | 298303 | ||||
Pollutant: | pH | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed SWAMP RWB8 Monitoring data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for pH. | ||||
Data Reference: | Field, Habitat, Toxicity, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | Water Quality Control Plan, Los Angeles Basin: the pH for inland surface waters, bays, or estuaries shall not be depressed below 6.5 or raised above 8.5 as a result of waste discharges. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | The samples were collected at 1 monitoring site: 845CTC480 (Coyote Creek Random Olsen Site 480). | ||||
Temporal Representation: | The samples were collected between the dates of 2012-06-19 and 2012-06-19 | ||||
Environmental Conditions: | |||||
QAPP Information: | SWRCB. 2018. This is a placeholder reference for data that 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. | ||||
|
|||||
LOE ID: | 25016 | ||||
Pollutant: | pH | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Aquatic Life Use: | Preservation of Rare & Endangered Species | Wildlife Habitat | ||||
Number of Samples: | 276 | ||||
Number of Exceedances: | 105 | ||||
Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) | ||||
Data Used to Assess Water Quality: | 105 of 276 samples exceeded the Basin Plan water quality objectives for pH in inland surface water bodies. Water quality samples were taken and analyzed for pH in accordance with the Sanitation Districts of Los Angeles County permit monitoring and testing parameters. | ||||
Data Reference: | NPDES receiving water monitoring reports for Long Beach Water Reclamation Plant (NPDES No. CA0054119), Los Coyotes Water Reclamation Plant (NPDES No. CA0053716), Pomona Water Reclamation Plant (NPDES No. CA0053911), San Jose Creek Water Reclamation Plant (NPDES No. CA0053619), and Whittier Narrows Creek Water Reclamation Plant (NPDES No. CA0054011). | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Basin Plan states, "pH of inland surface waters shall not be depressed below 6.5 or raised above 8.5 as a result of wastes discharges." | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | The Sanitation Districts of Los Angeles County conducted sampling in Coyote Creek in the following receiving water monitoring stations: receiving water station RA1 located upstream of discharge from Long Beach Water Reclamation Plant; receiving water station RA located downstream of discharge from Long Beach Water Reclamation Plant; and station R9 East located at the downstream end of the pavement lining (near Atherton Street) in the eastern low flow channel of San Gabriel River. | ||||
Temporal Representation: | Grab samples taken and analyzed on a bimonthly and monthly basis from December 2004 to February 2007. | ||||
Environmental Conditions: | |||||
QAPP Information: | Data was collected in compliance with the sampling and monitoring procedures detailed in Sanitation Districts of Los Angeles County Permit (No. CA0054119) Monitoring and Reporting Program. | ||||
QAPP Information Reference(s): | Long Beach Water Reclamation Plant Monitoring and Reporting Program for NPDES No. CA0054119 (County Sanitation Districts of Los Angeles County) | ||||
|
|||||
LOE ID: | 2441 | ||||
Pollutant: | pH | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 15 | ||||
Number of Exceedances: | 1 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Numeric data generated from 15 samples taken from 10/12/00 to 1/28/02 at one to two-week sampling interval. One sample was below the 6.5 pH basin plan WQO for the protection of aquatic life beneficial uses (LACDPW, 2003a). | ||||
Data Reference: | Placeholder reference 2006 303(d) | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Basin Plan WQO for inland surface waters shall not be depressed below 6.5 or raised above 8.5 as a result of waster discharges to protect aquatic life BUs. | ||||
Objective/Criterion Reference: | Placeholder reference 2006 303(d) | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | One sample site sampled during the dry and wet season beginning from 10/12/00 through 1/28/02 at approximately one to two week intervals. | ||||
Temporal Representation: | Fifteen samples where taken during the wet and dry season from 10/12/00 to 1/28/02 at approximately one to two week intervals as part of the Los Angeles County Storm water monitoring program prepared by the Los Angeles County Department of Public Works. | ||||
Environmental Conditions: | The Coyote Creek Monitoring Station (S13) is located at the existing ACOE stream gage station (Stream Gage No. F354-R) below Spring Street in the lower San Gabriel River watershed. The site assists in determining mass loading for the San Gabriel River watershed. At this location, the upstream tributary area is 150 square miles (extending into Orange County). The sampling site was chosen to avoid backwater effects from the San Gabriel River. Coyote Creek, at the gauging station, is a concrete lined trapezoidal channel. The Coyote Creek sampling location has been an active stream gauging station since 1963. | ||||
QAPP Information: | Evaluation of Analytes and QA/QC Specifications for Monitoring Program (Woodward-Clyde, 1996) Los Angeles County Department of Public Works. | ||||
QAPP Information Reference(s): | |||||
|
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LOE ID: | 298302 | ||||
Pollutant: | pH | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 2 | ||||
Number of Exceedances: | 2 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed San Gabriel River Regional Monitoring Program data for Coyote Creek to determine beneficial use support and results are as follows: 2 of 2 samples exceeded the water quality threshold for pH. | ||||
Data Reference: | Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Water Quality Control Plan, Los Angeles Basin: the pH for inland surface waters, bays, or estuaries shall not be depressed below 6.5 or raised above 8.5 as a result of waste discharges. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | The samples were collected at 1 monitoring site: SMC01278_SGRRMP (SGLR01278_SGRRMP). | ||||
Temporal Representation: | The samples were collected between the dates of 2016-06-23 and 2017-07-19 | ||||
Environmental Conditions: | |||||
QAPP Information: | Aquatic Bioassay & Consulting Laboratories. 2019. San Gabriel River Regional Monitoring Program. | ||||
QAPP Information Reference(s): | San Gabriel River Regional Monitoring Program | ||||
|
|||||
LOE ID: | 83867 | ||||
Pollutant: | pH | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 26 | ||||
Number of Exceedances: | 9 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Nine of 26 samples exceeded the objective. | ||||
Data Reference: | Data for Various Waterbodies in Region 8 and Region 9, 2006-2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The pH of all inland surface waters shall not be depressed below 6.5 or raised above 8.5 as a result of waste discharges. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Samples were collected from the CCBA01 station. | ||||
Temporal Representation: | Samples were collected approximately 4 times semi-annually from September 2006 to June 2009. | ||||
Environmental Conditions: | |||||
QAPP Information: | NPDES quality assurance. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 2442 | ||||
Pollutant: | pH | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 229 | ||||
Number of Exceedances: | 97 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Ninety-seven samples out of 229 total samples exceed the pH objective. | ||||
Data Reference: | Placeholder reference 2006 303(d) | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Basin Plan: The pH of inland surface waters shall not be depressed below 6.5 or raised above 8.5 as a result of waste discharges. Ambient pH levels shall not be changed more than 0.5 units from natural conditions as a result of waste discharge. | ||||
Objective/Criterion Reference: | Placeholder reference 2006 303(d) | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Three stations. | ||||
Temporal Representation: | Samples were collected weekly between June 2003 and November 2004. | ||||
Environmental Conditions: | |||||
QAPP Information: | NPDES quality assurance. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 83866 | ||||
Pollutant: | pH | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 125 | ||||
Number of Exceedances: | 43 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Forty-three of the 125 samples exceeded the objective. | ||||
Data Reference: | Data for Various Pollutants in Various Water Bodies in Sanitation Districts of Los Angeles County, 2005-2010. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The pH of all inland surface waters shall not be depressed below 6.5 or raised above 8.5 as a result of waste discharges. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Samples were collected from the LB-RA1, LB-RA, and LB-RA1B stations. | ||||
Temporal Representation: | Samples were collected approximately once a month from July 2005 to November 2009. | ||||
Environmental Conditions: | |||||
QAPP Information: | NPDES quality assurance. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 26260 | ||||
Pollutant: | pH | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Aquatic Life Use: | Preservation of Rare & Endangered Species | Wildlife Habitat | ||||
Number of Samples: | 16 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) | ||||
Data Used to Assess Water Quality: | Zero of 16 samples exceeded the Basin Plan water quality objectives for pH in inland surface water bodies. Water quality samples were taken and analyzed for pH in accordance with the Municipal Separate Storm Sewer System (MS4) permit monitoring and testing parameters. | ||||
Data Reference: | Monitoring Report (MS4 Data) - CI 6948 for order no. 01-182 NPDES No. CAS004001 Municipal Storm Water and Urban Runoff Discharges within the County of Los Angeles, and the Incorporated Cities therein, Except the City of Long Beach | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Basin Plan states, "pH of inland surface waters shall not be depressed below 6.5 or raised above 8.5 as a result of wastes discharges." | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | The Los Angeles County Department of Public Works conducted sampling at the mass emmission monitoring station S13 located below Spring Street in Coyote Creek (Lat: 33.8098610175, Long: -118.077061937). | ||||
Temporal Representation: | Composite samples were taken approximately six per year (four wet-weather events and two dry-weather events), from December 2004 through April 2007. | ||||
Environmental Conditions: | |||||
QAPP Information: | Data was collected in compliance with the sampling and monitoring procedures detailed in County of Los Angeles MS4 Permit (NPDES No. CAS004001) Monitoring and Reporting Program. | ||||
QAPP Information Reference(s): | Monitoring and Reporting Program - CI 6948 for order no. 01-182 NPDES No. CAS004001 Municipal Storm Water and Urban Runoff Discharges within the County of Los Angeles, and the incorporated cities, except the City of Long Beach | ||||
DECISION ID |
150537 |
Region 4 |
Coyote Creek |
||
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: | Do Not Delist from 303(d) list (being addressed with USEPA approved TMDL)(2018) |
Revision Status | Revised |
Sources: | A Source Unknown |
TMDL Name: | San Gabriel River Coliform (45) |
TMDL Project Code: | 391 |
Date TMDL Approved by USEPA: | 06/14/2016 |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for removal from the CWA section 303(d) List under sections 2.2, 4.3 and 4.11 of the Listing Policy. Under section 4.3 a single line of evidence is necessary to assess listing status. Eleven lines of evidence are available in the administrative record to assess this pollutant. Because a statistically sufficient number of geomean samples were not available, attainment of the bacteria objective was determined based only on the STV per the situation-specific weight of evidence approach outlined in Sections 4.11 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 water segment-pollutant combination from the CWA section 303(d) List. There is sufficient justification to place this waterbody/pollutant in the Being Addressed portion of the CWA 303(d) List because a TMDL has been completed and approved by 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. 16 of 23 samples exceeded the statistical threshold value for E. coli and this exceeds the allowable frequency listed in Table 4.2 of the Listing Policy. 4. The San Gabriel River Bacteria TMDL was approved by USEPA on 06/14/2016. 5. Pursuant to section 4.11 of the Listing Policy, no additional data and information are available indicating that standards are met. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be removed from the section 303(d) list because applicable water quality standards for the pollutant are 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: | 4095 | ||||
Pollutant: | Coliform Bacteria | ||||
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): | |||||
|
|||||
LOE ID: | 83851 | ||||
Pollutant: | Escherichia coli (E. coli) | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Water Contact Recreation | ||||
Number of Samples: | 62 | ||||
Number of Exceedances: | 32 | ||||
Data and Information Type: | Not Specified | ||||
Data Used to Assess Water Quality: | Thirty-two of the sixty- two samples exceeded the E. coli objective. | ||||
Data Reference: | Data for Various Pollutants in Various Water Bodies in Sanitation Districts of Los Angeles County, 2005-2010. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The E. coli density shall not exceed 235/100 ml. Water Quality Control Plan for the Los Angeles Region. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | |||||
Guideline Reference: | Ambient Water Quality Criteria for Bacteria - 1986. EPA440/5-84-002 | ||||
Spatial Representation: | The samples were collected at Long Beach Station RSW-002 (RA)and Long Beach Station RSW-001 (RA-1). | ||||
Temporal Representation: | The samples were collected weekly from June 2005 to 2006 and monthly from 2007 October 2009. | ||||
Environmental Conditions: | |||||
QAPP Information: | The samples were collected under the San Jose Creek Laboratory sample collection procedures. Dec 28, 2010. NO QAPP was provided. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 83853 | ||||
Pollutant: | Fecal Coliform | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Water Contact Recreation | ||||
Number of Samples: | 2 | ||||
Number of Exceedances: | 2 | ||||
Data and Information Type: | Not Specified | ||||
Data Used to Assess Water Quality: | Two of the two geometric means exceeded the fecal colifrom objective. | ||||
Data Reference: | Data for Various Waterbodies in Region 8 and Region 9, 2006-2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Geomean: The fecal coliform concentration shall not exceed more than 200/100ml. Water Quality Control Plan Los Angeles Region. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | The samples were collected from Coyote Creek. | ||||
Temporal Representation: | The samples were collected from September 2006 to June 2009. | ||||
Environmental Conditions: | |||||
QAPP Information: | The samples were collected and analyzed under the Quality Assurance Management Plan for The Orange County Stormwater Program. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 83852 | ||||
Pollutant: | Fecal Coliform | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Water Contact Recreation | ||||
Number of Samples: | 16 | ||||
Number of Exceedances: | 10 | ||||
Data and Information Type: | Not Specified | ||||
Data Used to Assess Water Quality: | Ten of the 16 samples exceeded the fecal colifrom objective. | ||||
Data Reference: | Data for Various Waterbodies in Region 8 and Region 9, 2006-2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The single sample fecal coliform concentration shall not exceed more than 400/100ml. Water Quality Control Plan Los Angeles Region | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | The samples were collected from Coyote Creek. | ||||
Temporal Representation: | The samples were collected in September 2007. | ||||
Environmental Conditions: | |||||
QAPP Information: | The samples were collected and analyzed under the Quality Assurance Management Plan for The Orange County Stormwater Program. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 25214 | ||||
Pollutant: | Indicator Bacteria | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Water Contact Recreation | ||||
Number of Samples: | 269 | ||||
Number of Exceedances: | 198 | ||||
Data and Information Type: | Other Agencies/Organizations provided monitoring data | ||||
Data Used to Assess Water Quality: | 198 of 269 samples exceeded the Basin Plan single sample water quality objectives for indicator bacteria in fresh water. 55 of 58 sample exceeded the geometric mean objectives. Water quality samples were taken and analyzed for indicator bacteria in accordance with the Sanitation Districts of Los Angeles County permit monitoring and testing parameters. | ||||
Data Reference: | NPDES receiving water monitoring reports for Long Beach Water Reclamation Plant (NPDES No. CA0054119), Los Coyotes Water Reclamation Plant (NPDES No. CA0053716), Pomona Water Reclamation Plant (NPDES No. CA0053911), San Jose Creek Water Reclamation Plant (NPDES No. CA0053619), and Whittier Narrows Creek Water Reclamation Plant (NPDES No. CA0054011). | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Basin Plan bacteria objectives state that to protect water contact recreation in fresh waters individual samples shall not exceed the following limits: fecal coliform density shall not exceed 400/100 ml; and E. coli density shall not exceed 235/100 ml. The bacteria objectives also establish that the geometric means of individual samples shall not exceed the following limits: the fecal coliform density shall not exceed 200/100 ml; and the E. coli density shall not exceed 126/100 ml, as a geometric mean. The bacteria objectives are found in Attachment A of Regional Board Resolution No. 2001-018. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | The Sanitation Districts of Los Angeles County conducted sampling in Coyote Creek in the following receiving water monitoring stations: receiving water station RA1 located upstream of discharge from Long Beach Water Reclamation Plant; receiving water station RA located downstream of discharge from Long Beach Water Reclamation Plant; and station R9 East located at the downstream end of the pavement lining (near Atherton Street) in the eastern low flow channel of San Gabriel River. | ||||
Temporal Representation: | Grab samples were taken and analyzed on a bimonthly and monthly basis from June 2004 to February 2007. | ||||
Environmental Conditions: | |||||
QAPP Information: | Data was collected in compliance with the sampling and monitoring procedures detailed in Sanitation Districts of Los Angeles County Permit (No. CA0054119) Monitoring and Reporting Program. | ||||
QAPP Information Reference(s): | Long Beach Water Reclamation Plant Monitoring and Reporting Program for NPDES No. CA0054119 (County Sanitation Districts of Los Angeles County) | ||||
|
|||||
LOE ID: | 25017 | ||||
Pollutant: | Indicator Bacteria | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Water Contact Recreation | ||||
Number of Samples: | 23 | ||||
Number of Exceedances: | 22 | ||||
Data and Information Type: | Other Agencies/Organizations provided monitoring data | ||||
Data Used to Assess Water Quality: | 22 of 23 samples exceeded the Basin Plan single sample water quality objectives for indicator bacteria in fresh water. Five of five sample exceeded the geometric mean objectives. Water quality samples were taken and analyzed for indicator bacteria in accordance with the Municipal Separate Storm Sewer System (MS4) permit monitoring and testing parameters. | ||||
Data Reference: | Monitoring Report (MS4 Data) - CI 6948 for order no. 01-182 NPDES No. CAS004001 Municipal Storm Water and Urban Runoff Discharges within the County of Los Angeles, and the Incorporated Cities therein, Except the City of Long Beach | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Basin Plan bacteria objectives state that to protect water contact recreation in fresh waters individual samples shall not exceed the following limits: fecal coliform density shall not exceed 400/100 ml; and E. coli density shall not exceed 235/100 ml. The bacteria objectives also establish that the geometric means of individual samples shall not exceed the following limits: the fecal coliform density shall not exceed 200/100 ml; and the E. coli density shall not exceed 126/100 ml, as a geometric mean. The bacteria objectives are found in Attachment A of Regional Board Resolution No. 2001-018. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | The Los Angeles County Department of Public Works conducted sampling at the mass emission monitoring station S13 located below Spring Street in Coyote Creek (Lat: 33.8098610175, Long: -118.077061937). | ||||
Temporal Representation: | Composite samples were taken approximately six per year, four wet-weather events and two dry-weather events, from October 2003 through April 2007. | ||||
Environmental Conditions: | |||||
QAPP Information: | Data was collected in compliance with the sampling and monitoring procedures detailed in County of Los Angeles MS4 Permit (NPDES No. CAS004001) Monitoring and Reporting Program. | ||||
QAPP Information Reference(s): | Monitoring and Reporting Program - CI 6948 for order no. 01-182 NPDES No. CAS004001 Municipal Storm Water and Urban Runoff Discharges within the County of Los Angeles, and the incorporated cities, except the City of Long Beach | ||||
|
|||||
LOE ID: | 83875 | ||||
Pollutant: | Total Coliform | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Water Contact Recreation | ||||
Number of Samples: | 2 | ||||
Number of Exceedances: | 2 | ||||
Data and Information Type: | Not Specified | ||||
Data Used to Assess Water Quality: | Two of the two geometric means exceeded the total coliform objective. | ||||
Data Reference: | Data for Various Waterbodies in Region 8 and Region 9, 2006-2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Geomean: The total coliform concentration shall not exceed more than 1000/100ml. Water Quality Control Plan Los Angeles Region. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | The samples were collected from Coyote Creek. | ||||
Temporal Representation: | The samples were collected from September 2006 to June 2009. | ||||
Environmental Conditions: | |||||
QAPP Information: | The samples were collected and analyzed under the Quality Assurance Management Plan for The Orange County Stormwater Program. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 302979 | ||||
Pollutant: | Escherichia coli (E. coli) | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | STV | ||||
Beneficial Use: | Water Contact Recreation | ||||
Number of Samples: | 3 | ||||
Number of Exceedances: | 2 | ||||
Data and Information Type: | PATHOGEN MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed LA County MS4 data for Coyote Creek to determine beneficial use support and the results are as follows: 2 of the 3 samples exceeded the Statistical Threshold Value (STV) water quality threshold for E. coli. The STV is based on a 10% exceedance rate that is calculated monthly. | ||||
Data Reference: | WQ data from the MS4 database assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The bacteria water quality objective to protect the REC-1 beneficial use where the salinity is less than 1 parts per thousand 95 percent or more of the time applies a statistical threshold value to E. coli of 320 cfu/100 mL, not to be exceeded by more than 10 percent of samples within a calendar month (ISWEBE 2018). | ||||
Objective/Criterion Reference: | Inland Surface Waters, Enclosed Bays, and Estuaries Plan. Part 1: Trash Provisions; Part 2: Tribal Subsistence Beneficial Uses and Mercury Provisions; Part 3: Bacteria Provisions and Variance Policy | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | The samples were collected at 1 monitoring site(s), station(s): LSGR_S13 (Coyote Creek @ Spring St. mass emission station). | ||||
Temporal Representation: | The samples were collected between the days of 2016-07-28 and 2016-12-16 . | ||||
Environmental Conditions: | |||||
QAPP Information: | Municipal Separate Storm Sewer System (MS4) | ||||
QAPP Information Reference(s): | Municipal Separate Storm Sewer System (MS4) | ||||
|
|||||
LOE ID: | 83874 | ||||
Pollutant: | Total Coliform | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Water Contact Recreation | ||||
Number of Samples: | 16 | ||||
Number of Exceedances: | 4 | ||||
Data and Information Type: | Not Specified | ||||
Data Used to Assess Water Quality: | Four of the 16 samples exceeded the total colifrom objective. | ||||
Data Reference: | Data for Various Waterbodies in Region 8 and Region 9, 2006-2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The single sample total coliform concentration shall not exceed more than 10000/100ml. Water Quality Control Plan Los Angeles Region. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | The samples were collected from Coyote Creek. | ||||
Temporal Representation: | The samples were collected in September 2007. | ||||
Environmental Conditions: | |||||
QAPP Information: | The samples were collected and analyzed under the Quality Assurance Management Plan for The Orange County Stormwater Program. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 303007 | ||||
Pollutant: | Escherichia coli (E. coli) | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | STV | ||||
Beneficial Use: | Water Contact Recreation | ||||
Number of Samples: | 18 | ||||
Number of Exceedances: | 13 | ||||
Data and Information Type: | PATHOGEN MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed LA County MS4 data for Coyote Creek to determine beneficial use support and the results are as follows: 13 of the 18 samples exceeded the Statistical Threshold Value (STV) water quality threshold for E. coli. The STV is based on a 10% exceedance rate that is calculated monthly. | ||||
Data Reference: | WQ data from the MS4 database assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The bacteria water quality objective to protect the REC-1 beneficial use where the salinity is less than 1 parts per thousand 95 percent or more of the time applies a statistical threshold value to E. coli of 320 cfu/100 mL, not to be exceeded by more than 10 percent of samples within a calendar month (ISWEBE 2018). | ||||
Objective/Criterion Reference: | Inland Surface Waters, Enclosed Bays, and Estuaries Plan. Part 1: Trash Provisions; Part 2: Tribal Subsistence Beneficial Uses and Mercury Provisions; Part 3: Bacteria Provisions and Variance Policy | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | The samples were collected at 1 monitoring site(s), station(s): LSGR-S13 (Coyote Creek at Spring St). | ||||
Temporal Representation: | The samples were collected between the days of 2015-07-28 and 2019-12-18 . | ||||
Environmental Conditions: | |||||
QAPP Information: | Municipal Separate Storm Sewer System (MS4) | ||||
QAPP Information Reference(s): | Municipal Separate Storm Sewer System (MS4) | ||||
|
|||||
LOE ID: | 303018 | ||||
Pollutant: | Escherichia coli (E. coli) | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | STV | ||||
Beneficial Use: | Water Contact Recreation | ||||
Number of Samples: | 2 | ||||
Number of Exceedances: | 1 | ||||
Data and Information Type: | PATHOGEN MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed LA County MS4 data for Pacific Ocean Shoreline, Aliso HSA, at Blue Lagoon to determine beneficial use support and the results are as follows: 1 of the 2 samples exceeded the Statistical Threshold Value (STV) water quality threshold for E. coli. The STV is based on a 10% exceedance rate that is calculated monthly. | ||||
Data Reference: | WQ data from the MS4 database assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The bacteria water quality objective to protect the REC-1 beneficial use where the salinity is less than 1 parts per thousand 95 percent or more of the time applies a statistical threshold value to E. coli of 320 cfu/100 mL, not to be exceeded by more than 10 percent of samples within a calendar month (ISWEBE 2018). | ||||
Objective/Criterion Reference: | Inland Surface Waters, Enclosed Bays, and Estuaries Plan. Part 1: Trash Provisions; Part 2: Tribal Subsistence Beneficial Uses and Mercury Provisions; Part 3: Bacteria Provisions and Variance Policy | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | The samples were collected at 1 monitoring site(s), station(s): S13 (Coyote Creek @ Spring St. mass emission station). | ||||
Temporal Representation: | The samples were collected between the days of 2015-07-28 and 2015-12-13 . | ||||
Environmental Conditions: | |||||
QAPP Information: | Municipal Separate Storm Sewer System (MS4) | ||||
QAPP Information Reference(s): | Municipal Separate Storm Sewer System (MS4) | ||||
DECISION ID |
132582 |
Region 4 |
Coyote Creek |
||
Pollutant: | 1,1,2-Trichloroethane |
Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | New Decision |
Revision Status | Revised |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the CWA section 303(d) List in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. 0 of 38 samples exceeded the CRITERIA and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because applicable water quality standards are not being exceeded. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 298250 | ||||
Pollutant: | 1,1,2-Trichloroethane | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Not Recorded | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 19 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed eSMR_Long Beach WRP data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 19 samples exceeded the water quality threshold for Trichloroethane, 1,1,2-. | ||||
Data Reference: | WQ data from the California Integrated Water Quality System (CIWQS) assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan for the Los Angeles Region states that: Surface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | The USEPA National Recommended Water Quality Criteria (Gold Book) for freshwater aquatic life protection, chronic Lowest Observed Effect Level is 9,400 ug/L. | ||||
Guideline Reference: | Quality Criteria for Water 1986. United States Environmental Protection Agency. Office of Water. Regulations and Standards. Washington D.C. EPA 440/5-86-001. | ||||
Spatial Representation: | The samples were collected at 1 monitoring site: 658086 (RSW-002). | ||||
Temporal Representation: | The samples were collected between the dates of 2011-07-11 and 2020-07-09 | ||||
Environmental Conditions: | |||||
QAPP Information: | Los Angeles County Sanitation Districts. 2020. Los Angeles County Sanitation Districts Receiving Water Monitoring Program. | ||||
QAPP Information Reference(s): | Los Angeles County Sanitation Districts Receiving Water Monitoring Program | ||||
|
|||||
LOE ID: | 298249 | ||||
Pollutant: | 1,1,2-Trichloroethane | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Not Recorded | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 19 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed eSMR_Long Beach WRP data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 19 samples exceeded the water quality threshold for Trichloroethane, 1,1,2-. | ||||
Data Reference: | WQ data from the California Integrated Water Quality System (CIWQS) assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan for the Los Angeles Region states that: Surface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | The USEPA National Recommended Water Quality Criteria (Gold Book) for freshwater aquatic life protection, chronic Lowest Observed Effect Level is 9,400 ug/L. | ||||
Guideline Reference: | Quality Criteria for Water 1986. United States Environmental Protection Agency. Office of Water. Regulations and Standards. Washington D.C. EPA 440/5-86-001. | ||||
Spatial Representation: | The samples were collected at 1 monitoring site: 658085 (RSW-001). | ||||
Temporal Representation: | The samples were collected between the dates of 2011-07-11 and 2020-07-09 | ||||
Environmental Conditions: | |||||
QAPP Information: | Los Angeles County Sanitation Districts. 2020. Los Angeles County Sanitation Districts Receiving Water Monitoring Program. | ||||
QAPP Information Reference(s): | Los Angeles County Sanitation Districts Receiving Water Monitoring Program | ||||
DECISION ID |
132561 |
Region 4 |
Coyote Creek |
||
Pollutant: | 2,4-D (2,4-Dichlorophenoxy acetic acid) |
Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | New Decision |
Revision Status | Revised |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the CWA section 303(d) List in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. 0 of 54 samples exceeded the GUIDELINE and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because applicable water quality standards are not being exceeded. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 298193 | ||||
Pollutant: | 2,4-D (2,4-Dichlorophenoxy acetic acid) | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Not Recorded | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 27 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed eSMR_Long Beach WRP data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 27 samples exceeded the water quality threshold for Dichlorophenoxyacetic Acid, 2,4-. | ||||
Data Reference: | WQ data from the California Integrated Water Quality System (CIWQS) assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan for the Los Angeles Region states that: Surface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | The evaluation guideline for dichlorophenoxyacetic acid, 2,4- (2,4-D) is the USEPA Aquatic Life Benchmark of 299.2 ug/L for a vascular plant (acute). | ||||
Guideline Reference: | OPP Aquatic Life Benchmarks | ||||
Spatial Representation: | The samples were collected at 1 monitoring site: 658086 (RSW-002). | ||||
Temporal Representation: | The samples were collected between the dates of 2011-07-11 and 2020-07-09 | ||||
Environmental Conditions: | |||||
QAPP Information: | Los Angeles County Sanitation Districts. 2020. Los Angeles County Sanitation Districts Receiving Water Monitoring Program. | ||||
QAPP Information Reference(s): | Los Angeles County Sanitation Districts Receiving Water Monitoring Program | ||||
|
|||||
LOE ID: | 298194 | ||||
Pollutant: | 2,4-D (2,4-Dichlorophenoxy acetic acid) | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Not Recorded | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 27 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed eSMR_Long Beach WRP data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 27 samples exceeded the water quality threshold for Dichlorophenoxyacetic Acid, 2,4-. | ||||
Data Reference: | WQ data from the California Integrated Water Quality System (CIWQS) assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan for the Los Angeles Region states that: Surface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | The evaluation guideline for dichlorophenoxyacetic acid, 2,4- (2,4-D) is the USEPA Aquatic Life Benchmark of 299.2 ug/L for a vascular plant (acute). | ||||
Guideline Reference: | OPP Aquatic Life Benchmarks | ||||
Spatial Representation: | The samples were collected at 1 monitoring site: 658085 (RSW-001). | ||||
Temporal Representation: | The samples were collected between the dates of 2011-07-11 and 2020-07-09 | ||||
Environmental Conditions: | |||||
QAPP Information: | Los Angeles County Sanitation Districts. 2020. Los Angeles County Sanitation Districts Receiving Water Monitoring Program. | ||||
QAPP Information Reference(s): | Los Angeles County Sanitation Districts Receiving Water Monitoring Program | ||||
DECISION ID |
132579 |
Region 4 |
Coyote Creek |
||
Pollutant: | Acrolein |
Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | New Decision |
Revision Status | Revised |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the CWA section 303(d) List in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. 0 of 38 samples exceeded the CRITERIA and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because applicable water quality standards are not being exceeded. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 298161 | ||||
Pollutant: | Acrolein | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Not Recorded | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 19 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed eSMR_Long Beach WRP data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 19 samples exceeded the water quality threshold for Acrolein. | ||||
Data Reference: | WQ data from the California Integrated Water Quality System (CIWQS) assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan for the Los Angeles Region states that: Surface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | The USEPA recommended acrolein criterion for the protection of aquatic life in freshwater is 3 ug/L ( 4-day average). | ||||
Guideline Reference: | National Recommended Water Quality Criteria. United States Environmental Protection Agency. Office of Water. Current as of 08/03/2016. | ||||
Spatial Representation: | The samples were collected at 1 monitoring site: 658085 (RSW-001). | ||||
Temporal Representation: | The samples were collected between the dates of 2011-07-11 and 2020-07-09 | ||||
Environmental Conditions: | |||||
QAPP Information: | Los Angeles County Sanitation Districts. 2020. Los Angeles County Sanitation Districts Receiving Water Monitoring Program. | ||||
QAPP Information Reference(s): | Los Angeles County Sanitation Districts Receiving Water Monitoring Program | ||||
|
|||||
LOE ID: | 298159 | ||||
Pollutant: | Acrolein | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Not Recorded | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 19 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed eSMR_Long Beach WRP data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 19 samples exceeded the water quality threshold for Acrolein. | ||||
Data Reference: | WQ data from the California Integrated Water Quality System (CIWQS) assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan for the Los Angeles Region states that: Surface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | The USEPA recommended acrolein criterion for the protection of aquatic life in freshwater is 3 ug/L ( 4-day average). | ||||
Guideline Reference: | National Recommended Water Quality Criteria. United States Environmental Protection Agency. Office of Water. Current as of 08/03/2016. | ||||
Spatial Representation: | The samples were collected at 1 monitoring site: 658086 (RSW-002). | ||||
Temporal Representation: | The samples were collected between the dates of 2011-07-11 and 2020-07-09 | ||||
Environmental Conditions: | |||||
QAPP Information: | Los Angeles County Sanitation Districts. 2020. Los Angeles County Sanitation Districts Receiving Water Monitoring Program. | ||||
QAPP Information Reference(s): | Los Angeles County Sanitation Districts Receiving Water Monitoring Program | ||||
DECISION ID |
132580 |
Region 4 |
Coyote Creek |
||
Pollutant: | Aldrin |
Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | New Decision |
Revision Status | Revised |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the CWA section 303(d) List in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. 0 of 38 samples exceeded the criteria and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because applicable water quality standards are not being exceeded. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 298156 | ||||
Pollutant: | Aldrin | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Not Recorded | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 19 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed eSMR_Long Beach WRP data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 19 samples exceeded the water quality threshold for Aldrin. | ||||
Data Reference: | WQ data from the California Integrated Water Quality System (CIWQS) assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The aldrin criterion maximum concentration (expressed as a 1-day average) to protect aquatic life in freshwater is 1.5 ug/L. The criterion of 3 ug/L provided in the California Toxics Rule is an instantaneous maximum concentration and was divided by 2 in order to better represent a criterion maximum concentration (CMC) value as specified in footnote (g) of Table (b)(1) of the California Toxics Rule (2000). | ||||
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: | The samples were collected at 1 monitoring site: 658086 (RSW-002). | ||||
Temporal Representation: | The samples were collected between the dates of 2011-07-11 and 2020-07-09 | ||||
Environmental Conditions: | |||||
QAPP Information: | Los Angeles County Sanitation Districts. 2020. Los Angeles County Sanitation Districts Receiving Water Monitoring Program. | ||||
QAPP Information Reference(s): | Los Angeles County Sanitation Districts Receiving Water Monitoring Program | ||||
|
|||||
LOE ID: | 298166 | ||||
Pollutant: | Aldrin | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Not Recorded | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 19 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed eSMR_Long Beach WRP data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 19 samples exceeded the water quality threshold for Aldrin. | ||||
Data Reference: | WQ data from the California Integrated Water Quality System (CIWQS) assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The aldrin criterion maximum concentration (expressed as a 1-day average) to protect aquatic life in freshwater is 1.5 ug/L. The criterion of 3 ug/L provided in the California Toxics Rule is an instantaneous maximum concentration and was divided by 2 in order to better represent a criterion maximum concentration (CMC) value as specified in footnote (g) of Table (b)(1) of the California Toxics Rule (2000). | ||||
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: | The samples were collected at 1 monitoring site: 658085 (RSW-001). | ||||
Temporal Representation: | The samples were collected between the dates of 2011-07-11 and 2020-07-09 | ||||
Environmental Conditions: | |||||
QAPP Information: | Los Angeles County Sanitation Districts. 2020. Los Angeles County Sanitation Districts Receiving Water Monitoring Program. | ||||
QAPP Information Reference(s): | Los Angeles County Sanitation Districts Receiving Water Monitoring Program | ||||
DECISION ID |
132581 |
Region 4 |
Coyote Creek |
||
Pollutant: | Alkalinity as CaCO3 |
Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | New Decision |
Revision Status | Revised |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded. |
|
|||||
LOE ID: | 298256 | ||||
Pollutant: | Alkalinity as CaCO3 | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed SWAMP RWB8 Monitoring data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Alkalinity as CaCO3. | ||||
Data Reference: | Field, Habitat, Toxicity, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan for the Los Angeles Region states that: Surface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | The USEPA recommended alkalinity criterion continuous concentration (CCC) for the protection of aquatic life in freshwater is a minimum value of 20,000 ug/L (4-day average). | ||||
Guideline Reference: | National Recommended Water Quality Criteria. United States Environmental Protection Agency. Office of Water. Current as of 08/03/2016. | ||||
Spatial Representation: | The samples were collected at 1 monitoring site: 845CTC480 (Coyote Creek Random Olsen Site 480). | ||||
Temporal Representation: | The samples were collected between the dates of 2012-06-19 and 2012-06-19 | ||||
Environmental Conditions: | |||||
QAPP Information: | SWRCB. 2018. This is a placeholder reference for data that 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. | ||||
|
|||||
LOE ID: | 298258 | ||||
Pollutant: | Alkalinity as CaCO3 | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed SWAMP RWB8 Monitoring data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Alkalinity as CaCO3. | ||||
Data Reference: | Field, Habitat, Toxicity, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan for the Los Angeles Region states that: Surface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | The USEPA recommended alkalinity criterion continuous concentration (CCC) for the protection of aquatic life in freshwater is a minimum value of 20,000 ug/L (4-day average). | ||||
Guideline Reference: | National Recommended Water Quality Criteria. United States Environmental Protection Agency. Office of Water. Current as of 08/03/2016. | ||||
Spatial Representation: | The samples were collected at 1 monitoring site: 845RB8633 (Coyote Creek Random Olsen Site 633). | ||||
Temporal Representation: | The samples were collected between the dates of 2013-07-08 and 2013-07-08 | ||||
Environmental Conditions: | |||||
QAPP Information: | SWRCB. 2018. This is a placeholder reference for data that 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. | ||||
|
|||||
LOE ID: | 298105 | ||||
Pollutant: | Alkalinity as CaCO3 | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 2 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed LA County MS4 data for Pacific Ocean Shoreline, Aliso HSA, at Blue Lagoon to determine beneficial use support and results are as follows: 0 of 2 samples exceeded the water quality threshold for Alkalinity as CaCO3. | ||||
Data Reference: | WQ data from the MS4 database assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan for the Los Angeles Region states that: Surface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | The USEPA recommended alkalinity criterion continuous concentration (CCC) for the protection of aquatic life in freshwater is a minimum value of 20,000 ug/L (4-day average). | ||||
Guideline Reference: | National Recommended Water Quality Criteria. United States Environmental Protection Agency. Office of Water. Current as of 08/03/2016. | ||||
Spatial Representation: | The samples were collected at 1 monitoring site: S13 (Coyote Creek @ Spring St. mass emission station). | ||||
Temporal Representation: | The samples were collected between the dates of 2015-07-29 and 2015-12-14 | ||||
Environmental Conditions: | |||||
QAPP Information: | Municipal Separate Storm Sewer System (MS4) | ||||
QAPP Information Reference(s): | Municipal Separate Storm Sewer System (MS4) | ||||
|
|||||
LOE ID: | 298101 | ||||
Pollutant: | Alkalinity as CaCO3 | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 3 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed LA County MS4 data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for Alkalinity as CaCO3. | ||||
Data Reference: | WQ data from the MS4 database assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan for the Los Angeles Region states that: Surface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | The USEPA recommended alkalinity criterion continuous concentration (CCC) for the protection of aquatic life in freshwater is a minimum value of 20,000 ug/L (4-day average). | ||||
Guideline Reference: | National Recommended Water Quality Criteria. United States Environmental Protection Agency. Office of Water. Current as of 08/03/2016. | ||||
Spatial Representation: | The samples were collected at 1 monitoring site: LSGR_S13 (Coyote Creek @ Spring St. mass emission station). | ||||
Temporal Representation: | The samples were collected between the dates of 2016-07-28 and 2016-12-16 | ||||
Environmental Conditions: | |||||
QAPP Information: | Municipal Separate Storm Sewer System (MS4) | ||||
QAPP Information Reference(s): | Municipal Separate Storm Sewer System (MS4) | ||||
|
|||||
LOE ID: | 298102 | ||||
Pollutant: | Alkalinity as CaCO3 | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 10 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed LA County MS4 data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 10 samples exceeded the water quality threshold for Alkalinity as CaCO3. | ||||
Data Reference: | WQ data from the MS4 database assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan for the Los Angeles Region states that: Surface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | The USEPA recommended alkalinity criterion continuous concentration (CCC) for the protection of aquatic life in freshwater is a minimum value of 20,000 ug/L (4-day average). | ||||
Guideline Reference: | National Recommended Water Quality Criteria. United States Environmental Protection Agency. Office of Water. Current as of 08/03/2016. | ||||
Spatial Representation: | The samples were collected at 1 monitoring site: LSGR-S13 (Coyote Creek at Spring St). | ||||
Temporal Representation: | The samples were collected between the dates of 2015-07-29 and 2019-11-21 | ||||
Environmental Conditions: | |||||
QAPP Information: | Municipal Separate Storm Sewer System (MS4) | ||||
QAPP Information Reference(s): | Municipal Separate Storm Sewer System (MS4) | ||||
|
|||||
LOE ID: | 298259 | ||||
Pollutant: | Alkalinity as CaCO3 | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 2 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed San Gabriel River Regional Monitoring Program data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 2 samples exceeded the water quality threshold for Alkalinity as CaCO3. | ||||
Data Reference: | Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan for the Los Angeles Region states that: Surface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | The USEPA recommended alkalinity criterion continuous concentration (CCC) for the protection of aquatic life in freshwater is a minimum value of 20,000 ug/L (4-day average). | ||||
Guideline Reference: | National Recommended Water Quality Criteria. United States Environmental Protection Agency. Office of Water. Current as of 08/03/2016. | ||||
Spatial Representation: | The samples were collected at 1 monitoring site: SMC01278_SGRRMP (SGLR01278_SGRRMP). | ||||
Temporal Representation: | The samples were collected between the dates of 2016-06-23 and 2017-07-19 | ||||
Environmental Conditions: | |||||
QAPP Information: | Aquatic Bioassay & Consulting Laboratories. 2019. San Gabriel River Regional Monitoring Program. | ||||
QAPP Information Reference(s): | San Gabriel River Regional Monitoring Program | ||||
DECISION ID |
132531 |
Region 4 |
Coyote Creek |
||
Pollutant: | Allethrin |
Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | New Decision |
Revision Status | Revised |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded. |
|
|||||
LOE ID: | 298257 | ||||
Pollutant: | Allethrin | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed San Gabriel River Regional Monitoring Program data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Allethrin. | ||||
Data Reference: | Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | The evaluation guideline for Allethrin is the USEPA Aquatic Life Benchmark of 1.05 ug/L for an invertebrate (acute). | ||||
Guideline Reference: | OPP Aquatic Life Benchmarks | ||||
Spatial Representation: | The samples were collected at 1 monitoring site: SMC01278_SGRRMP (SGLR01278_SGRRMP). | ||||
Temporal Representation: | The samples were collected between the dates of 2016-06-23 and 2016-06-23 | ||||
Environmental Conditions: | |||||
QAPP Information: | Aquatic Bioassay & Consulting Laboratories. 2019. San Gabriel River Regional Monitoring Program. | ||||
QAPP Information Reference(s): | San Gabriel River Regional Monitoring Program | ||||
DECISION ID |
132534 |
Region 4 |
Coyote Creek |
||
Pollutant: | Antimony |
Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | New Decision |
Revision Status | Revised |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the CWA section 303(d) List in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. 0 of 79, 0 of 74 and 0 of 6 samples exceeded the CRITERIA and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because applicable water quality standards are not being exceeded. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 298113 | ||||
Pollutant: | Antimony | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 2 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed LA County MS4 data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 2 samples exceeded the water quality threshold for Antimony. | ||||
Data Reference: | WQ data from the MS4 database assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan for the Los Angeles Region states that: Surface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | The USEPA Quality Criteria for Water (Gold Book) states that for antimony toxicity to algae occurs at 610 ug/l. (USEPA, 1986) | ||||
Guideline Reference: | Quality Criteria for Water 1986. United States Environmental Protection Agency. Office of Water. Regulations and Standards. Washington D.C. EPA 440/5-86-001. | ||||
Spatial Representation: | The samples were collected at 1 monitoring site: LSGR-S13 (Coyote Creek at Spring St). | ||||
Temporal Representation: | The samples were collected between the dates of 2015-07-29 and 2015-12-14 | ||||
Environmental Conditions: | |||||
QAPP Information: | Municipal Separate Storm Sewer System (MS4) | ||||
QAPP Information Reference(s): | Municipal Separate Storm Sewer System (MS4) | ||||
|
|||||
LOE ID: | 298262 | ||||
Pollutant: | Antimony | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed San Gabriel River Regional Monitoring Program data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Antimony. | ||||
Data Reference: | Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan for the Los Angeles Region states that: Surface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | The USEPA Quality Criteria for Water (Gold Book) states that for antimony toxicity to algae occurs at 610 ug/l. (USEPA, 1986) | ||||
Guideline Reference: | Quality Criteria for Water 1986. United States Environmental Protection Agency. Office of Water. Regulations and Standards. Washington D.C. EPA 440/5-86-001. | ||||
Spatial Representation: | The samples were collected at 1 monitoring site: SMC01278_SGRRMP (SGLR01278_SGRRMP). | ||||
Temporal Representation: | The samples were collected between the dates of 2016-06-23 and 2016-06-23 | ||||
Environmental Conditions: | |||||
QAPP Information: | Aquatic Bioassay & Consulting Laboratories. 2019. San Gabriel River Regional Monitoring Program. | ||||
QAPP Information Reference(s): | San Gabriel River Regional Monitoring Program | ||||
|
|||||
LOE ID: | 298158 | ||||
Pollutant: | Antimony | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 37 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed eSMR_Long Beach WRP data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 37 samples exceeded the water quality threshold for Antimony. | ||||
Data Reference: | WQ data from the California Integrated Water Quality System (CIWQS) assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan for the Los Angeles Region states that: Surface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | The USEPA Quality Criteria for Water (Gold Book) states that for antimony toxicity to algae occurs at 610 ug/l. (USEPA, 1986) | ||||
Guideline Reference: | Quality Criteria for Water 1986. United States Environmental Protection Agency. Office of Water. Regulations and Standards. Washington D.C. EPA 440/5-86-001. | ||||
Spatial Representation: | The samples were collected at 1 monitoring site: 658085 (RSW-001). | ||||
Temporal Representation: | The samples were collected between the dates of 2011-07-11 and 2020-07-09 | ||||
Environmental Conditions: | |||||
QAPP Information: | Los Angeles County Sanitation Districts. 2020. Los Angeles County Sanitation Districts Receiving Water Monitoring Program. | ||||
QAPP Information Reference(s): | Los Angeles County Sanitation Districts Receiving Water Monitoring Program | ||||
|
|||||
LOE ID: | 298157 | ||||
Pollutant: | Antimony | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Not Recorded | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 37 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed eSMR_Long Beach WRP data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 37 samples exceeded the water quality threshold for Antimony. | ||||
Data Reference: | WQ data from the California Integrated Water Quality System (CIWQS) assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan for the Los Angeles Region states that: Surface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | The USEPA Quality Criteria for Water (Gold Book) states that for antimony toxicity to algae occurs at 610 ug/l. (USEPA, 1986) | ||||
Guideline Reference: | Quality Criteria for Water 1986. United States Environmental Protection Agency. Office of Water. Regulations and Standards. Washington D.C. EPA 440/5-86-001. | ||||
Spatial Representation: | The samples were collected at 1 monitoring site: 658085 (RSW-001). | ||||
Temporal Representation: | The samples were collected between the dates of 2011-07-11 and 2020-07-09 | ||||
Environmental Conditions: | |||||
QAPP Information: | Los Angeles County Sanitation Districts. 2020. Los Angeles County Sanitation Districts Receiving Water Monitoring Program. | ||||
QAPP Information Reference(s): | Los Angeles County Sanitation Districts Receiving Water Monitoring Program | ||||
|
|||||
LOE ID: | 298265 | ||||
Pollutant: | Antimony | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed SWAMP RWB8 Monitoring data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Antimony. | ||||
Data Reference: | Field, Habitat, Toxicity, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan for the Los Angeles Region states that: Surface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | The USEPA Quality Criteria for Water (Gold Book) states that for antimony toxicity to algae occurs at 610 ug/l. (USEPA, 1986) | ||||
Guideline Reference: | Quality Criteria for Water 1986. United States Environmental Protection Agency. Office of Water. Regulations and Standards. Washington D.C. EPA 440/5-86-001. | ||||
Spatial Representation: | The samples were collected at 1 monitoring site: 845RB8633 (Coyote Creek Random Olsen Site 633). | ||||
Temporal Representation: | The samples were collected between the dates of 2013-07-08 and 2013-07-08 | ||||
Environmental Conditions: | |||||
QAPP Information: | SWRCB. 2018. This is a placeholder reference for data that 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. | ||||
|
|||||
LOE ID: | 298162 | ||||
Pollutant: | Antimony | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Not Recorded | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 37 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed eSMR_Long Beach WRP data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 37 samples exceeded the water quality threshold for Antimony. | ||||
Data Reference: | WQ data from the California Integrated Water Quality System (CIWQS) assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan for the Los Angeles Region states that: Surface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | The USEPA Quality Criteria for Water (Gold Book) states that for antimony toxicity to algae occurs at 610 ug/l. (USEPA, 1986) | ||||
Guideline Reference: | Quality Criteria for Water 1986. United States Environmental Protection Agency. Office of Water. Regulations and Standards. Washington D.C. EPA 440/5-86-001. | ||||
Spatial Representation: | The samples were collected at 1 monitoring site: 658086 (RSW-002). | ||||
Temporal Representation: | The samples were collected between the dates of 2011-07-11 and 2020-07-09 | ||||
Environmental Conditions: | |||||
QAPP Information: | Los Angeles County Sanitation Districts. 2020. Los Angeles County Sanitation Districts Receiving Water Monitoring Program. | ||||
QAPP Information Reference(s): | Los Angeles County Sanitation Districts Receiving Water Monitoring Program | ||||
|
|||||
LOE ID: | 298098 | ||||
Pollutant: | Antimony | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 2 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed LA County MS4 data for Pacific Ocean Shoreline, Aliso HSA, at Blue Lagoon to determine beneficial use support and results are as follows: 0 of 2 samples exceeded the water quality threshold for Antimony. | ||||
Data Reference: | WQ data from the MS4 database assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan for the Los Angeles Region states that: Surface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | The USEPA Quality Criteria for Water (Gold Book) states that for antimony toxicity to algae occurs at 610 ug/l. (USEPA, 1986) | ||||
Guideline Reference: | Quality Criteria for Water 1986. United States Environmental Protection Agency. Office of Water. Regulations and Standards. Washington D.C. EPA 440/5-86-001. | ||||
Spatial Representation: | The samples were collected at 1 monitoring site: S13 (Coyote Creek @ Spring St. mass emission station). | ||||
Temporal Representation: | The samples were collected between the dates of 2015-07-29 and 2015-12-14 | ||||
Environmental Conditions: | |||||
QAPP Information: | Municipal Separate Storm Sewer System (MS4) | ||||
QAPP Information Reference(s): | Municipal Separate Storm Sewer System (MS4) | ||||
|
|||||
LOE ID: | 298111 | ||||
Pollutant: | Antimony | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 2 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed LA County MS4 data for Pacific Ocean Shoreline, Aliso HSA, at Blue Lagoon to determine beneficial use support and results are as follows: 0 of 2 samples exceeded the water quality threshold for Antimony. | ||||
Data Reference: | WQ data from the MS4 database assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan for the Los Angeles Region states that: Surface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | The USEPA Quality Criteria for Water (Gold Book) states that for antimony toxicity to algae occurs at 610 ug/l. (USEPA, 1986) | ||||
Guideline Reference: | Quality Criteria for Water 1986. United States Environmental Protection Agency. Office of Water. Regulations and Standards. Washington D.C. EPA 440/5-86-001. | ||||
Spatial Representation: | The samples were collected at 1 monitoring site: S13 (Coyote Creek @ Spring St. mass emission station). | ||||
Temporal Representation: | The samples were collected between the dates of 2015-07-29 and 2015-12-14 | ||||
Environmental Conditions: | |||||
QAPP Information: | Municipal Separate Storm Sewer System (MS4) | ||||
QAPP Information Reference(s): | Municipal Separate Storm Sewer System (MS4) | ||||
|
|||||
LOE ID: | 298263 | ||||
Pollutant: | Antimony | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed San Gabriel River Regional Monitoring Program data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Antimony. | ||||
Data Reference: | Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan for the Los Angeles Region states that: Surface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | The USEPA Quality Criteria for Water (Gold Book) states that for antimony toxicity to algae occurs at 610 ug/l. (USEPA, 1986) | ||||
Guideline Reference: | Quality Criteria for Water 1986. United States Environmental Protection Agency. Office of Water. Regulations and Standards. Washington D.C. EPA 440/5-86-001. | ||||
Spatial Representation: | The samples were collected at 1 monitoring site: SMC01278_SGRRMP (SGLR01278_SGRRMP). | ||||
Temporal Representation: | The samples were collected between the dates of 2016-06-23 and 2016-06-23 | ||||
Environmental Conditions: | |||||
QAPP Information: | Aquatic Bioassay & Consulting Laboratories. 2019. San Gabriel River Regional Monitoring Program. | ||||
QAPP Information Reference(s): | San Gabriel River Regional Monitoring Program | ||||
|
|||||
LOE ID: | 298167 | ||||
Pollutant: | Antimony | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 37 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed eSMR_Long Beach WRP data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 37 samples exceeded the water quality threshold for Antimony. | ||||
Data Reference: | WQ data from the California Integrated Water Quality System (CIWQS) assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan for the Los Angeles Region states that: Surface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | The USEPA Quality Criteria for Water (Gold Book) states that for antimony toxicity to algae occurs at 610 ug/l. (USEPA, 1986) | ||||
Guideline Reference: | Quality Criteria for Water 1986. United States Environmental Protection Agency. Office of Water. Regulations and Standards. Washington D.C. EPA 440/5-86-001. | ||||
Spatial Representation: | The samples were collected at 1 monitoring site: 658086 (RSW-002). | ||||
Temporal Representation: | The samples were collected between the dates of 2011-07-11 and 2020-07-09 | ||||
Environmental Conditions: | |||||
QAPP Information: | Los Angeles County Sanitation Districts. 2020. Los Angeles County Sanitation Districts Receiving Water Monitoring Program. | ||||
QAPP Information Reference(s): | Los Angeles County Sanitation Districts Receiving Water Monitoring Program | ||||
|
|||||
LOE ID: | 298110 | ||||
Pollutant: | Antimony | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 2 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed LA County MS4 data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 2 samples exceeded the water quality threshold for Antimony. | ||||
Data Reference: | WQ data from the MS4 database assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan for the Los Angeles Region states that: Surface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | The USEPA Quality Criteria for Water (Gold Book) states that for antimony toxicity to algae occurs at 610 ug/l. (USEPA, 1986) | ||||
Guideline Reference: | Quality Criteria for Water 1986. United States Environmental Protection Agency. Office of Water. Regulations and Standards. Washington D.C. EPA 440/5-86-001. | ||||
Spatial Representation: | The samples were collected at 1 monitoring site: LSGR-S13 (Coyote Creek at Spring St). | ||||
Temporal Representation: | The samples were collected between the dates of 2015-07-29 and 2015-12-14 | ||||
Environmental Conditions: | |||||
QAPP Information: | Municipal Separate Storm Sewer System (MS4) | ||||
QAPP Information Reference(s): | Municipal Separate Storm Sewer System (MS4) | ||||
DECISION ID |
132536 |
Region 4 |
Coyote Creek |
||
Pollutant: | Arsenic |
Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | Do Not List on 303(d) list (TMDL required list)(2018) |
Revision Status | Revised |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status. Eight lines of evidence are available in the administrative record to assess this pollutant. 0 of 107 samples exceeded the CRITERIA. 0 of 81 samples exceeded the CRITERIA. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the CWA section 303(d) List in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. 0 of 107 and 0 of 81 samples exceeded the CRITERIA and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because applicable water quality standards are not being exceeded. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 298165 | ||||
Pollutant: | Arsenic | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 37 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed eSMR_Long Beach WRP data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 37 samples exceeded the water quality threshold for Arsenic. | ||||
Data Reference: | WQ data from the California Integrated Water Quality System (CIWQS) assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The dissolved arsenic criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is 150 ug/L. The conversion factor used to convert the total fraction criterion for arsenic to dissolved fraction criterion is 1. Therefore all data was considered to be representative of the dissolved fraction. (California Toxics Rule, 2000) | ||||
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: | The samples were collected at 1 monitoring site: 658086 (RSW-002). | ||||
Temporal Representation: | The samples were collected between the dates of 2011-07-11 and 2020-07-09 | ||||
Environmental Conditions: | |||||
QAPP Information: | Los Angeles County Sanitation Districts. 2020. Los Angeles County Sanitation Districts Receiving Water Monitoring Program. | ||||
QAPP Information Reference(s): | Los Angeles County Sanitation Districts Receiving Water Monitoring Program | ||||
|
|||||
LOE ID: | 298106 | ||||
Pollutant: | Arsenic | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 2 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed LA County MS4 data for Pacific Ocean Shoreline, Aliso HSA, at Blue Lagoon to determine beneficial use support and results are as follows: 0 of 2 samples exceeded the water quality threshold for Arsenic. | ||||
Data Reference: | WQ data from the MS4 database assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The dissolved arsenic criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is 150 ug/L. The conversion factor used to convert the total fraction criterion for arsenic to dissolved fraction criterion is 1. Therefore all data was considered to be representative of the dissolved fraction. (California Toxics Rule, 2000) | ||||
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: | The samples were collected at 1 monitoring site: S13 (Coyote Creek @ Spring St. mass emission station). | ||||
Temporal Representation: | The samples were collected between the dates of 2015-07-29 and 2015-12-14 | ||||
Environmental Conditions: | |||||
QAPP Information: | Municipal Separate Storm Sewer System (MS4) | ||||
QAPP Information Reference(s): | Municipal Separate Storm Sewer System (MS4) | ||||
|
|||||
LOE ID: | 298099 | ||||
Pollutant: | Arsenic | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 2 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed LA County MS4 data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 2 samples exceeded the water quality threshold for Arsenic. | ||||
Data Reference: | WQ data from the MS4 database assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The dissolved arsenic criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is 150 ug/L. The conversion factor used to convert the total fraction criterion for arsenic to dissolved fraction criterion is 1. Therefore all data was considered to be representative of the dissolved fraction. (California Toxics Rule, 2000) | ||||
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: | The samples were collected at 1 monitoring site: LSGR-S13 (Coyote Creek at Spring St). | ||||
Temporal Representation: | The samples were collected between the dates of 2015-07-29 and 2015-12-14 | ||||
Environmental Conditions: | |||||
QAPP Information: | Municipal Separate Storm Sewer System (MS4) | ||||
QAPP Information Reference(s): | Municipal Separate Storm Sewer System (MS4) | ||||
|
|||||
LOE ID: | 83884 | ||||
Pollutant: | Arsenic | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 26 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) | ||||
Data Used to Assess Water Quality: | None of the 26 samples exceeded the CTR value for arsenic. | ||||
Data Reference: | Data for Various Waterbodies in Region 8 and Region 9, 2006-2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Surface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | California Toxics Rule (CTR) lists criterion continuous concentrations (4-day average) to protect aquatic life in freshwater. The CTR for arsenic is 150 ug/L. | ||||
Guideline Reference: | Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition | ||||
Spatial Representation: | Samples were collected from station CCBA01, Coyote Creek at Valley View Drive. | ||||
Temporal Representation: | Samples were intermittently collected from September 2006 until January 2009. | ||||
Environmental Conditions: | Approximately 77% of the samples were collected after storm events. | ||||
QAPP Information: | Samples were collected and analyzed in accordance with the signed and certified, Quality Assurance Management Plan for the Orange County Stormwater Program. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 83890 | ||||
Pollutant: | Arsenic | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total Dissolved | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 81 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) | ||||
Data Used to Assess Water Quality: | None of the 81 samples exceeded the criteria of 150 ug/L. | ||||
Data Reference: | Data for Various Pollutants in Various Water Bodies in Sanitation Districts of Los Angeles County, 2005-2010. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Surface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | California Toxics Rule (CTR) lists criterion continuous concentrations (4-day average) to protect aquatic life in freshwater. The CTR for arsenic is 150 ug/L. | ||||
Guideline Reference: | Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition | ||||
Spatial Representation: | Samples were collected from Coyote Creek from location LB also called SG at three sublocations: RA, RA1, and RA1B. | ||||
Temporal Representation: | Samples were collected monthly from June 2006 through May of 2010. | ||||
Environmental Conditions: | |||||
QAPP Information: | The Biology Department of the San Jose Creek Water Quality Laboratory is responsible for collecting samples from receiving water stations along the San Gabriel River, Coyote Creek, San Jose Creek, Santa Clara River, and the Rio Hondo River. Data is collected for the Los Angeles Sanitation District NPDES permits. Some standard operating procedures for sampling were submitted, however no QA Project Plan was. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 298266 | ||||
Pollutant: | Arsenic | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed SWAMP RWB8 Monitoring data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Arsenic. | ||||
Data Reference: | Field, Habitat, Toxicity, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | The dissolved arsenic criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is 150 ug/L. The conversion factor used to convert the total fraction criterion for arsenic to dissolved fraction criterion is 1. Therefore all data was considered to be representative of the dissolved fraction. (California Toxics Rule, 2000) | ||||
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: | The samples were collected at 1 monitoring site: 845RB8633 (Coyote Creek Random Olsen Site 633). | ||||
Temporal Representation: | The samples were collected between the dates of 2013-07-08 and 2013-07-08 | ||||
Environmental Conditions: | |||||
QAPP Information: | SWRCB. 2018. This is a placeholder reference for data that 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. | ||||
|
|||||
LOE ID: | 298164 | ||||
Pollutant: | Arsenic | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 37 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed eSMR_Long Beach WRP data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 37 samples exceeded the water quality threshold for Arsenic. | ||||
Data Reference: | WQ data from the California Integrated Water Quality System (CIWQS) assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The dissolved arsenic criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is 150 ug/L. The conversion factor used to convert the total fraction criterion for arsenic to dissolved fraction criterion is 1. Therefore all data was considered to be representative of the dissolved fraction. (California Toxics Rule, 2000) | ||||
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: | The samples were collected at 1 monitoring site: 658085 (RSW-001). | ||||
Temporal Representation: | The samples were collected between the dates of 2011-07-11 and 2020-07-09 | ||||
Environmental Conditions: | |||||
QAPP Information: | Los Angeles County Sanitation Districts. 2020. Los Angeles County Sanitation Districts Receiving Water Monitoring Program. | ||||
QAPP Information Reference(s): | Los Angeles County Sanitation Districts Receiving Water Monitoring Program | ||||
|
|||||
LOE ID: | 298267 | ||||
Pollutant: | Arsenic | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 2 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed San Gabriel River Regional Monitoring Program data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 2 samples exceeded the water quality threshold for Arsenic. | ||||
Data Reference: | Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The dissolved arsenic criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is 150 ug/L. The conversion factor used to convert the total fraction criterion for arsenic to dissolved fraction criterion is 1. Therefore all data was considered to be representative of the dissolved fraction. (California Toxics Rule, 2000) | ||||
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: | The samples were collected at 1 monitoring site: SMC01278_SGRRMP (SGLR01278_SGRRMP). | ||||
Temporal Representation: | The samples were collected between the dates of 2016-06-23 and 2017-07-19 | ||||
Environmental Conditions: | |||||
QAPP Information: | Aquatic Bioassay & Consulting Laboratories. 2019. San Gabriel River Regional Monitoring Program. | ||||
QAPP Information Reference(s): | San Gabriel River Regional Monitoring Program | ||||
DECISION ID |
132537 |
Region 4 |
Coyote Creek |
||
Pollutant: | Beryllium |
Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | New Decision |
Revision Status | Revised |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the CWA section 303(d) List in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. 0 of 75, 0 of 74 and 0 of 4 samples exceeded the CRITERIA and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because applicable water quality standards are not being exceeded. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 298170 | ||||
Pollutant: | Beryllium | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 37 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed eSMR_Long Beach WRP data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 37 samples exceeded the water quality threshold for Beryllium. | ||||
Data Reference: | WQ data from the California Integrated Water Quality System (CIWQS) assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan for the Los Angeles Region states that: Surface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | The Gold Book states that beryllium chronic toxicity to freshwater aquatic life occur at concentrations as low as 5.3 ug/L. | ||||
Guideline Reference: | Quality Criteria for Water 1986. United States Environmental Protection Agency. Office of Water. Regulations and Standards. Washington D.C. EPA 440/5-86-001. | ||||
Spatial Representation: | The samples were collected at 1 monitoring site: 658086 (RSW-002). | ||||
Temporal Representation: | The samples were collected between the dates of 2011-07-11 and 2020-07-09 | ||||
Environmental Conditions: | |||||
QAPP Information: | Los Angeles County Sanitation Districts. 2020. Los Angeles County Sanitation Districts Receiving Water Monitoring Program. | ||||
QAPP Information Reference(s): | Los Angeles County Sanitation Districts Receiving Water Monitoring Program | ||||
|
|||||
LOE ID: | 298269 | ||||
Pollutant: | Beryllium | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed San Gabriel River Regional Monitoring Program data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Beryllium. | ||||
Data Reference: | Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan for the Los Angeles Region states that: Surface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | The Gold Book states that beryllium chronic toxicity to freshwater aquatic life occur at concentrations as low as 5.3 ug/L. | ||||
Guideline Reference: | Quality Criteria for Water 1986. United States Environmental Protection Agency. Office of Water. Regulations and Standards. Washington D.C. EPA 440/5-86-001. | ||||
Spatial Representation: | The samples were collected at 1 monitoring site: SMC01278_SGRRMP (SGLR01278_SGRRMP). | ||||
Temporal Representation: | The samples were collected between the dates of 2016-06-23 and 2016-06-23 | ||||
Environmental Conditions: | |||||
QAPP Information: | Aquatic Bioassay & Consulting Laboratories. 2019. San Gabriel River Regional Monitoring Program. | ||||
QAPP Information Reference(s): | San Gabriel River Regional Monitoring Program | ||||
|
|||||
LOE ID: | 298270 | ||||
Pollutant: | Beryllium | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed San Gabriel River Regional Monitoring Program data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Beryllium. | ||||
Data Reference: | Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan for the Los Angeles Region states that: Surface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | The Gold Book states that beryllium chronic toxicity to freshwater aquatic life occur at concentrations as low as 5.3 ug/L. | ||||
Guideline Reference: | Quality Criteria for Water 1986. United States Environmental Protection Agency. Office of Water. Regulations and Standards. Washington D.C. EPA 440/5-86-001. | ||||
Spatial Representation: | The samples were collected at 1 monitoring site: SMC01278_SGRRMP (SGLR01278_SGRRMP). | ||||
Temporal Representation: | The samples were collected between the dates of 2016-06-23 and 2016-06-23 | ||||
Environmental Conditions: | |||||
QAPP Information: | Aquatic Bioassay & Consulting Laboratories. 2019. San Gabriel River Regional Monitoring Program. | ||||
QAPP Information Reference(s): | San Gabriel River Regional Monitoring Program | ||||
|
|||||
LOE ID: | 298176 | ||||
Pollutant: | Beryllium | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Not Recorded | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 37 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed eSMR_Long Beach WRP data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 37 samples exceeded the water quality threshold for Beryllium. | ||||
Data Reference: | WQ data from the California Integrated Water Quality System (CIWQS) assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan for the Los Angeles Region states that: Surface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | The Gold Book states that beryllium chronic toxicity to freshwater aquatic life occur at concentrations as low as 5.3 ug/L. | ||||
Guideline Reference: | Quality Criteria for Water 1986. United States Environmental Protection Agency. Office of Water. Regulations and Standards. Washington D.C. EPA 440/5-86-001. | ||||
Spatial Representation: | The samples were collected at 1 monitoring site: 658086 (RSW-002). | ||||
Temporal Representation: | The samples were collected between the dates of 2011-07-11 and 2020-07-09 | ||||
Environmental Conditions: | |||||
QAPP Information: | Los Angeles County Sanitation Districts. 2020. Los Angeles County Sanitation Districts Receiving Water Monitoring Program. | ||||
QAPP Information Reference(s): | Los Angeles County Sanitation Districts Receiving Water Monitoring Program | ||||
|
|||||
LOE ID: | 298268 | ||||
Pollutant: | Beryllium | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed SWAMP RWB8 Monitoring data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Beryllium. | ||||
Data Reference: | Field, Habitat, Toxicity, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan for the Los Angeles Region states that: Surface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | The Gold Book states that beryllium chronic toxicity to freshwater aquatic life occur at concentrations as low as 5.3 ug/L. | ||||
Guideline Reference: | Quality Criteria for Water 1986. United States Environmental Protection Agency. Office of Water. Regulations and Standards. Washington D.C. EPA 440/5-86-001. | ||||
Spatial Representation: | The samples were collected at 1 monitoring site: 845RB8633 (Coyote Creek Random Olsen Site 633). | ||||
Temporal Representation: | The samples were collected between the dates of 2013-07-08 and 2013-07-08 | ||||
Environmental Conditions: | |||||
QAPP Information: | SWRCB. 2018. This is a placeholder reference for data that 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. | ||||
|
|||||
LOE ID: | 298097 | ||||
Pollutant: | Beryllium | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed LA County MS4 data for Pacific Ocean Shoreline, Aliso HSA, at Blue Lagoon to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Beryllium. | ||||
Data Reference: | WQ data from the MS4 database assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan for the Los Angeles Region states that: Surface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | The Gold Book states that beryllium chronic toxicity to freshwater aquatic life occur at concentrations as low as 5.3 ug/L. | ||||
Guideline Reference: | Quality Criteria for Water 1986. United States Environmental Protection Agency. Office of Water. Regulations and Standards. Washington D.C. EPA 440/5-86-001. | ||||
Spatial Representation: | The samples were collected at 1 monitoring site: S13 (Coyote Creek @ Spring St. mass emission station). | ||||
Temporal Representation: | The samples were collected between the dates of 2015-12-14 and 2015-12-14 | ||||
Environmental Conditions: | |||||
QAPP Information: | Municipal Separate Storm Sewer System (MS4) | ||||
QAPP Information Reference(s): | Municipal Separate Storm Sewer System (MS4) | ||||
|
|||||
LOE ID: | 298095 | ||||
Pollutant: | Beryllium | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed LA County MS4 data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Beryllium. | ||||
Data Reference: | WQ data from the MS4 database assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan for the Los Angeles Region states that: Surface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | The Gold Book states that beryllium chronic toxicity to freshwater aquatic life occur at concentrations as low as 5.3 ug/L. | ||||
Guideline Reference: | Quality Criteria for Water 1986. United States Environmental Protection Agency. Office of Water. Regulations and Standards. Washington D.C. EPA 440/5-86-001. | ||||
Spatial Representation: | The samples were collected at 1 monitoring site: LSGR-S13 (Coyote Creek at Spring St). | ||||
Temporal Representation: | The samples were collected between the dates of 2015-12-14 and 2015-12-14 | ||||
Environmental Conditions: | |||||
QAPP Information: | Municipal Separate Storm Sewer System (MS4) | ||||
QAPP Information Reference(s): | Municipal Separate Storm Sewer System (MS4) | ||||
|
|||||
LOE ID: | 298177 | ||||
Pollutant: | Beryllium | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Not Recorded | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 37 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed eSMR_Long Beach WRP data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 37 samples exceeded the water quality threshold for Beryllium. | ||||
Data Reference: | WQ data from the California Integrated Water Quality System (CIWQS) assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan for the Los Angeles Region states that: Surface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | The Gold Book states that beryllium chronic toxicity to freshwater aquatic life occur at concentrations as low as 5.3 ug/L. | ||||
Guideline Reference: | Quality Criteria for Water 1986. United States Environmental Protection Agency. Office of Water. Regulations and Standards. Washington D.C. EPA 440/5-86-001. | ||||
Spatial Representation: | The samples were collected at 1 monitoring site: 658085 (RSW-001). | ||||
Temporal Representation: | The samples were collected between the dates of 2011-07-11 and 2020-07-09 | ||||
Environmental Conditions: | |||||
QAPP Information: | Los Angeles County Sanitation Districts. 2020. Los Angeles County Sanitation Districts Receiving Water Monitoring Program. | ||||
QAPP Information Reference(s): | Los Angeles County Sanitation Districts Receiving Water Monitoring Program | ||||
|
|||||
LOE ID: | 298172 | ||||
Pollutant: | Beryllium | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 37 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed eSMR_Long Beach WRP data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 37 samples exceeded the water quality threshold for Beryllium. | ||||
Data Reference: | WQ data from the California Integrated Water Quality System (CIWQS) assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan for the Los Angeles Region states that: Surface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | The Gold Book states that beryllium chronic toxicity to freshwater aquatic life occur at concentrations as low as 5.3 ug/L. | ||||
Guideline Reference: | Quality Criteria for Water 1986. United States Environmental Protection Agency. Office of Water. Regulations and Standards. Washington D.C. EPA 440/5-86-001. | ||||
Spatial Representation: | The samples were collected at 1 monitoring site: 658085 (RSW-001). | ||||
Temporal Representation: | The samples were collected between the dates of 2011-07-11 and 2020-07-09 | ||||
Environmental Conditions: | |||||
QAPP Information: | Los Angeles County Sanitation Districts. 2020. Los Angeles County Sanitation Districts Receiving Water Monitoring Program. | ||||
QAPP Information Reference(s): | Los Angeles County Sanitation Districts Receiving Water Monitoring Program | ||||
DECISION ID |
132577 |
Region 4 |
Coyote Creek |
||
Pollutant: | Bifenthrin |
Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | New Decision |
Revision Status | Revised |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded. |
|
|||||
LOE ID: | 298271 | ||||
Pollutant: | Bifenthrin | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 0 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed San Gabriel River Regional Monitoring Program data for Coyote Creek to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Bifenthrin. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5. | ||||
Data Reference: | Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | The chronic criterion for bifenthrin is 0.1 ng/L (expressed as a 4-day average). If the freely dissolved concentrations of bifenthrin were reported or could be calculated then these values were used for this assessment. In the absence of freely dissolved concentrations, total concentrations were used. | ||||
Guideline Reference: | Water Quality Criteria Report for Bifenthrin | ||||
Spatial Representation: | The samples were collected at 1 monitoring site: SMC01278_SGRRMP (SGLR01278_SGRRMP). | ||||
Temporal Representation: | Data for this waterbody were collected over the date range 2016-06-23 to 2016-06-23 | ||||
Environmental Conditions: | |||||
QAPP Information: | Aquatic Bioassay & Consulting Laboratories. 2019. San Gabriel River Regional Monitoring Program. | ||||
QAPP Information Reference(s): | San Gabriel River Regional Monitoring Program | ||||
DECISION ID |
132538 |
Region 4 |
Coyote Creek |
||
Pollutant: | Cadmium |
Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | Do Not List on 303(d) list (TMDL required list)(2018) |
Revision Status | Revised |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status. 8 line of evidence are available in the administrative record to assess this pollutant. The fractions "dissolved" and "total dissolved" are equivalent and will be manually added. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the CWA section 303(d) List in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. 0 of 151 samples exceeded the CRITERIA and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because applicable water quality standards are not being exceeded. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 298173 | ||||
Pollutant: | Cadmium | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 37 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed eSMR_Long Beach WRP data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 37 samples exceeded the water quality threshold for Cadmium. | ||||
Data Reference: | WQ data from the California Integrated Water Quality System (CIWQS) assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The dissolved cadmium criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is hardness dependent. The criterion when calculated using a default hardness of 100 mg/L is 2.2 ug/L (California Toxics Rule, 2000). | ||||
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: | The samples were collected at 1 monitoring site: 658085 (RSW-001). | ||||
Temporal Representation: | The samples were collected between the dates of 2011-07-11 and 2020-07-09 | ||||
Environmental Conditions: | |||||
QAPP Information: | Los Angeles County Sanitation Districts. 2020. Los Angeles County Sanitation Districts Receiving Water Monitoring Program. | ||||
QAPP Information Reference(s): | Los Angeles County Sanitation Districts Receiving Water Monitoring Program | ||||
|
|||||
LOE ID: | 298171 | ||||
Pollutant: | Cadmium | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 37 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed eSMR_Long Beach WRP data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 37 samples exceeded the water quality threshold for Cadmium. | ||||
Data Reference: | WQ data from the California Integrated Water Quality System (CIWQS) assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The dissolved cadmium criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is hardness dependent. The criterion when calculated using a default hardness of 100 mg/L is 2.2 ug/L (California Toxics Rule, 2000). | ||||
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: | The samples were collected at 1 monitoring site: 658086 (RSW-002). | ||||
Temporal Representation: | The samples were collected between the dates of 2011-07-11 and 2020-07-09 | ||||
Environmental Conditions: | |||||
QAPP Information: | Los Angeles County Sanitation Districts. 2020. Los Angeles County Sanitation Districts Receiving Water Monitoring Program. | ||||
QAPP Information Reference(s): | Los Angeles County Sanitation Districts Receiving Water Monitoring Program | ||||
|
|||||
LOE ID: | 83892 | ||||
Pollutant: | Cadmium | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total Dissolved | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 46 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) | ||||
Data Used to Assess Water Quality: | None of the 46 samples exceeded the hardness adjusted criteria. | ||||
Data Reference: | Data for Various Pollutants in Various Water Bodies in Sanitation Districts of Los Angeles County, 2005-2010. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Surface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | California Toxics Rule (CTR) lists criterion continuous concentrations (4-day average) to protect aquatic life in freshwater. The criterion in freshwater is hardness dependent for each sample and varies based on the ambient hardness during sampling. Section (b)(1) in CTR contains the hardness dependent formula for the metals criterion. If no hardness data were available, a value of 100 mg/L was used. | ||||
Guideline Reference: | Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition | ||||
Spatial Representation: | Samples were collected from Coyote Creek from location LB also called SG at three sublocations: RA, RA1, and RA1B. | ||||
Temporal Representation: | Samples were collected monthly from June 2006 through May of 2010. | ||||
Environmental Conditions: | |||||
QAPP Information: | The Biology Department of the San Jose Creek Water Quality Laboratory is responsible for collecting samples from receiving water stations along the San Gabriel River, Coyote Creek, San Jose Creek, Santa Clara River, and the Rio Hondo River. Data is collected for the Los Angeles Sanitation District NPDES permits. Some standard operating procedures for sampling were submitted, however no QA Project Plan was. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 83891 | ||||
Pollutant: | Cadmium | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 26 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) | ||||
Data Used to Assess Water Quality: | None of the 26 samples exceeded the hardness adjusted CTR value for cadmium. | ||||
Data Reference: | Data for Various Waterbodies in Region 8 and Region 9, 2006-2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Surface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | California Toxics Rule (CTR) lists criterion continuous concentrations (4-day average) to protect aquatic life in freshwater. The disolved criterion in freshwater is hardness dependent for each sample and varies based on the ambient hardness during sampling. Section (b)(1) in CTR contains the hardness dependent formula for the metals criterion. If no hardness data were available, a value of 100 mg/L was used. | ||||
Guideline Reference: | Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition | ||||
Spatial Representation: | Samples were collected from station CCBA01, Coyote Creek at Valley View Drive. | ||||
Temporal Representation: | Samples were intermittently collected from September 2006 until January 2009. | ||||
Environmental Conditions: | Approximately 77% of the samples were collected after storm events. | ||||
QAPP Information: | Samples were collected and analyzed in accordance with the signed and certified, Quality Assurance Management Plan for the Orange County Stormwater Program. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 298103 | ||||
Pollutant: | Cadmium | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed LA County MS4 data for Pacific Ocean Shoreline, Aliso HSA, at Blue Lagoon to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Cadmium. | ||||
Data Reference: | WQ data from the MS4 database assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The dissolved cadmium criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is hardness dependent. The criterion when calculated using a default hardness of 100 mg/L is 2.2 ug/L (California Toxics Rule, 2000). | ||||
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: | The samples were collected at 1 monitoring site: S13 (Coyote Creek @ Spring St. mass emission station). | ||||
Temporal Representation: | The samples were collected between the dates of 2015-12-14 and 2015-12-14 | ||||
Environmental Conditions: | |||||
QAPP Information: | Municipal Separate Storm Sewer System (MS4) | ||||
QAPP Information Reference(s): | Municipal Separate Storm Sewer System (MS4) | ||||
|
|||||
LOE ID: | 298100 | ||||
Pollutant: | Cadmium | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed LA County MS4 data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Cadmium. | ||||
Data Reference: | WQ data from the MS4 database assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The dissolved cadmium criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is hardness dependent. The criterion when calculated using a default hardness of 100 mg/L is 2.2 ug/L (California Toxics Rule, 2000). | ||||
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: | The samples were collected at 1 monitoring site: LSGR-S13 (Coyote Creek at Spring St). | ||||
Temporal Representation: | The samples were collected between the dates of 2015-12-14 and 2015-12-14 | ||||
Environmental Conditions: | |||||
QAPP Information: | Municipal Separate Storm Sewer System (MS4) | ||||
QAPP Information Reference(s): | Municipal Separate Storm Sewer System (MS4) | ||||
|
|||||
LOE ID: | 298273 | ||||
Pollutant: | Cadmium | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 2 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed San Gabriel River Regional Monitoring Program data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 2 samples exceeded the water quality threshold for Cadmium. | ||||
Data Reference: | Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The dissolved cadmium criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is hardness dependent. The criterion when calculated using a default hardness of 100 mg/L is 2.2 ug/L (California Toxics Rule, 2000). | ||||
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: | The samples were collected at 1 monitoring site: SMC01278_SGRRMP (SGLR01278_SGRRMP). | ||||
Temporal Representation: | The samples were collected between the dates of 2016-06-23 and 2017-07-19 | ||||
Environmental Conditions: | |||||
QAPP Information: | Aquatic Bioassay & Consulting Laboratories. 2019. San Gabriel River Regional Monitoring Program. | ||||
QAPP Information Reference(s): | San Gabriel River Regional Monitoring Program | ||||
|
|||||
LOE ID: | 298272 | ||||
Pollutant: | Cadmium | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed SWAMP RWB8 Monitoring data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Cadmium. | ||||
Data Reference: | Field, Habitat, Toxicity, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | The dissolved cadmium criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is hardness dependent. The criterion when calculated using a default hardness of 100 mg/L is 2.2 ug/L (California Toxics Rule, 2000). | ||||
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: | The samples were collected at 1 monitoring site: 845RB8633 (Coyote Creek Random Olsen Site 633). | ||||
Temporal Representation: | The samples were collected between the dates of 2013-07-08 and 2013-07-08 | ||||
Environmental Conditions: | |||||
QAPP Information: | SWRCB. 2018. This is a placeholder reference for data that 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 |
132539 |
Region 4 |
Coyote Creek |
||
Pollutant: | Chlordane |
Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | New Decision |
Revision Status | Revised |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded. |
|
|||||
LOE ID: | 298239 | ||||
Pollutant: | Chlordane | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Not Recorded | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 0 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed eSMR_Long Beach WRP data for Coyote Creek to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Total Chlordane. Although a total of 19 samples were collected, 19 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5. | ||||
Data Reference: | WQ data from the California Integrated Water Quality System (CIWQS) assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The chlordane criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is 0.0043 ug/L (California Toxics Rule, 2000). | ||||
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: | The samples were collected at 1 monitoring site: 658086 (RSW-002). | ||||
Temporal Representation: | Data for this waterbody were collected over the date range 2011-07-11 to 2020-07-09 | ||||
Environmental Conditions: | |||||
QAPP Information: | Los Angeles County Sanitation Districts. 2020. Los Angeles County Sanitation Districts Receiving Water Monitoring Program. | ||||
QAPP Information Reference(s): | Los Angeles County Sanitation Districts Receiving Water Monitoring Program | ||||
|
|||||
LOE ID: | 298241 | ||||
Pollutant: | Chlordane | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Not Recorded | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 0 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed eSMR_Long Beach WRP data for Coyote Creek to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Total Chlordane. Although a total of 19 samples were collected, 19 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5. | ||||
Data Reference: | WQ data from the California Integrated Water Quality System (CIWQS) assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The chlordane criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is 0.0043 ug/L (California Toxics Rule, 2000). | ||||
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: | The samples were collected at 1 monitoring site: 658085 (RSW-001). | ||||
Temporal Representation: | Data for this waterbody were collected over the date range 2011-07-11 to 2020-07-09 | ||||
Environmental Conditions: | |||||
QAPP Information: | Los Angeles County Sanitation Districts. 2020. Los Angeles County Sanitation Districts Receiving Water Monitoring Program. | ||||
QAPP Information Reference(s): | Los Angeles County Sanitation Districts Receiving Water Monitoring Program | ||||
DECISION ID |
132540 |
Region 4 |
Coyote Creek |
||
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)(2018) |
Revision Status | Revised |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded. |
|
|||||
LOE ID: | 298274 | ||||
Pollutant: | Chloride | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed SWAMP RWB8 Monitoring data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Chloride. | ||||
Data Reference: | Field, Habitat, Toxicity, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan for the Los Angeles Region states that: Surface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | The chloride criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is 230000 ug/L (230 mg/L)(USEPA National Recommended Water Quality Criteria, 2006). | ||||
Guideline Reference: | National Recommended Water Quality Criteria. United States Environmental Protection Agency. Office of Water. Current as of 08/03/2016. | ||||
Spatial Representation: | The samples were collected at 1 monitoring site: 845RB8633 (Coyote Creek Random Olsen Site 633). | ||||
Temporal Representation: | The samples were collected between the dates of 2013-07-08 and 2013-07-08 | ||||
Environmental Conditions: | |||||
QAPP Information: | SWRCB. 2018. This is a placeholder reference for data that 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. | ||||
|
|||||
LOE ID: | 298112 | ||||
Pollutant: | Chloride | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 3 | ||||
Number of Exceedances: | 1 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed LA County MS4 data for Coyote Creek to determine beneficial use support and results are as follows: 1 of 3 samples exceeded the water quality threshold for Chloride. | ||||
Data Reference: | WQ data from the MS4 database assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan for the Los Angeles Region states that: Surface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | The chloride criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is 230000 ug/L (230 mg/L)(USEPA National Recommended Water Quality Criteria, 2006). | ||||
Guideline Reference: | National Recommended Water Quality Criteria. United States Environmental Protection Agency. Office of Water. Current as of 08/03/2016. | ||||
Spatial Representation: | The samples were collected at 1 monitoring site: LSGR_S13 (Coyote Creek @ Spring St. mass emission station). | ||||
Temporal Representation: | The samples were collected between the dates of 2016-07-28 and 2016-12-16 | ||||
Environmental Conditions: | |||||
QAPP Information: | Municipal Separate Storm Sewer System (MS4) | ||||
QAPP Information Reference(s): | Municipal Separate Storm Sewer System (MS4) | ||||
|
|||||
LOE ID: | 298114 | ||||
Pollutant: | Chloride | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 10 | ||||
Number of Exceedances: | 1 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed LA County MS4 data for Coyote Creek to determine beneficial use support and results are as follows: 1 of 10 samples exceeded the water quality threshold for Chloride. | ||||
Data Reference: | WQ data from the MS4 database assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan for the Los Angeles Region states that: Surface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | The chloride criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is 230000 ug/L (230 mg/L)(USEPA National Recommended Water Quality Criteria, 2006). | ||||
Guideline Reference: | National Recommended Water Quality Criteria. United States Environmental Protection Agency. Office of Water. Current as of 08/03/2016. | ||||
Spatial Representation: | The samples were collected at 1 monitoring site: LSGR-S13 (Coyote Creek at Spring St). | ||||
Temporal Representation: | The samples were collected between the dates of 2015-07-29 and 2019-11-21 | ||||
Environmental Conditions: | |||||
QAPP Information: | Municipal Separate Storm Sewer System (MS4) | ||||
QAPP Information Reference(s): | Municipal Separate Storm Sewer System (MS4) | ||||
|
|||||
LOE ID: | 298275 | ||||
Pollutant: | Chloride | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 2 | ||||
Number of Exceedances: | 1 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed San Gabriel River Regional Monitoring Program data for Coyote Creek to determine beneficial use support and results are as follows: 1 of 2 samples exceeded the water quality threshold for Chloride. | ||||
Data Reference: | Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan for the Los Angeles Region states that: Surface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | The chloride criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is 230000 ug/L (230 mg/L)(USEPA National Recommended Water Quality Criteria, 2006). | ||||
Guideline Reference: | National Recommended Water Quality Criteria. United States Environmental Protection Agency. Office of Water. Current as of 08/03/2016. | ||||
Spatial Representation: | The samples were collected at 1 monitoring site: SMC01278_SGRRMP (SGLR01278_SGRRMP). | ||||
Temporal Representation: | The samples were collected between the dates of 2016-06-23 and 2017-07-19 | ||||
Environmental Conditions: | |||||
QAPP Information: | Aquatic Bioassay & Consulting Laboratories. 2019. San Gabriel River Regional Monitoring Program. | ||||
QAPP Information Reference(s): | San Gabriel River Regional Monitoring Program | ||||
|
|||||
LOE ID: | 298115 | ||||
Pollutant: | Chloride | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 2 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed LA County MS4 data for Pacific Ocean Shoreline, Aliso HSA, at Blue Lagoon to determine beneficial use support and results are as follows: 0 of 2 samples exceeded the water quality threshold for Chloride. | ||||
Data Reference: | WQ data from the MS4 database assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan for the Los Angeles Region states that: Surface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | The chloride criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is 230000 ug/L (230 mg/L)(USEPA National Recommended Water Quality Criteria, 2006). | ||||
Guideline Reference: | National Recommended Water Quality Criteria. United States Environmental Protection Agency. Office of Water. Current as of 08/03/2016. | ||||
Spatial Representation: | The samples were collected at 1 monitoring site: S13 (Coyote Creek @ Spring St. mass emission station). | ||||
Temporal Representation: | The samples were collected between the dates of 2015-07-29 and 2015-12-14 | ||||
Environmental Conditions: | |||||
QAPP Information: | Municipal Separate Storm Sewer System (MS4) | ||||
QAPP Information Reference(s): | Municipal Separate Storm Sewer System (MS4) | ||||
DECISION ID |
132586 |
Region 4 |
Coyote Creek |
||
Pollutant: | Chromium |
Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | Do Not List on 303(d) list (TMDL required list)(2018) |
Revision Status | Revised |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status. LOE 83898 was removed from this decision as the data assessed in this LOE are for hexavalent chromium and not appropriate to include in this decision. Eight lines of evidence are available in the administrative record to assess this pollutant. Dissolved and total dissolved chromium are equivalent. These lines if evidence will be manually added. 0 of 105 samples exceeded the CRITERIA. 0 of 43 samples exceeded the CRITERIA. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the CWA section 303(d) List in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. 0 of 105 and 0 of 43 samples exceeded the CRITERIA and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because applicable water quality standards are not being exceeded. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
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LOE ID: | 83894 | ||||
Pollutant: | Chromium | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 26 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) | ||||
Data Used to Assess Water Quality: | None of the 26 samples exceeded the hardness adjusted CTR value for chromium. | ||||
Data Reference: | Data for Various Waterbodies in Region 8 and Region 9, 2006-2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Surface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | California Toxics Rule (CTR) lists criterion continuous concentrations (4-day average) to protect aquatic life in freshwater. The disolved criterion in freshwater is hardness dependent for each sample and varies based on the ambient hardness during sampling. Section (b)(1) in CTR contains the hardness dependent formula for the metals criterion. If no hardness data were available, a value of 100 mg/L was used. | ||||
Guideline Reference: | Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition | ||||
Spatial Representation: | Samples were collected from station CCBA01, Coyote Creek at Valley View Drive. | ||||
Temporal Representation: | Samples were intermittently collected from September 2006 until January 2009. | ||||
Environmental Conditions: | Approximately 77% of the samples were collected after storm events. | ||||
QAPP Information: | Samples were collected and analyzed in accordance with the signed and certified, Quality Assurance Management Plan for the Orange County Stormwater Program. | ||||
QAPP Information Reference(s): | |||||
|
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LOE ID: | 298107 | ||||
Pollutant: | Chromium | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed LA County MS4 data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Chromium. | ||||
Data Reference: | WQ data from the MS4 database assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The dissolved chromium (III) criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is is hardness dependent as described in Table 1 of paragraph (b)(1). The value calculated when using a default hardness of 100 mg/L is 180 ug/L (California Toxics Rule, 2000). | ||||
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: | The samples were collected at 1 monitoring site: LSGR-S13 (Coyote Creek at Spring St). | ||||
Temporal Representation: | The samples were collected between the dates of 2015-12-14 and 2015-12-14 | ||||
Environmental Conditions: | |||||
QAPP Information: | Municipal Separate Storm Sewer System (MS4) | ||||
QAPP Information Reference(s): | Municipal Separate Storm Sewer System (MS4) | ||||
|
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LOE ID: | 298276 | ||||
Pollutant: | Chromium | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 2 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed San Gabriel River Regional Monitoring Program data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 2 samples exceeded the water quality threshold for Chromium. | ||||
Data Reference: | Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The dissolved chromium (III) criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is is hardness dependent as described in Table 1 of paragraph (b)(1). The value calculated when using a default hardness of 100 mg/L is 180 ug/L (California Toxics Rule, 2000). | ||||
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: | The samples were collected at 1 monitoring site: SMC01278_SGRRMP (SGLR01278_SGRRMP). | ||||
Temporal Representation: | The samples were collected between the dates of 2016-06-23 and 2017-07-19 | ||||
Environmental Conditions: | |||||
QAPP Information: | Aquatic Bioassay & Consulting Laboratories. 2019. San Gabriel River Regional Monitoring Program. | ||||
QAPP Information Reference(s): | San Gabriel River Regional Monitoring Program | ||||
|
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LOE ID: | 298277 | ||||
Pollutant: | Chromium | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed SWAMP RWB8 Monitoring data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Chromium. | ||||
Data Reference: | Field, Habitat, Toxicity, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | The dissolved chromium (III) criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is is hardness dependent as described in Table 1 of paragraph (b)(1). The value calculated when using a default hardness of 100 mg/L is 180 ug/L (California Toxics Rule, 2000). | ||||
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: | The samples were collected at 1 monitoring site: 845RB8633 (Coyote Creek Random Olsen Site 633). | ||||
Temporal Representation: | The samples were collected between the dates of 2013-07-08 and 2013-07-08 | ||||
Environmental Conditions: | |||||
QAPP Information: | SWRCB. 2018. This is a placeholder reference for data that 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. | ||||
|
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LOE ID: | 298104 | ||||
Pollutant: | Chromium | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed LA County MS4 data for Pacific Ocean Shoreline, Aliso HSA, at Blue Lagoon to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Chromium. | ||||
Data Reference: | WQ data from the MS4 database assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The dissolved chromium (III) criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is is hardness dependent as described in Table 1 of paragraph (b)(1). The value calculated when using a default hardness of 100 mg/L is 180 ug/L (California Toxics Rule, 2000). | ||||
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: | The samples were collected at 1 monitoring site: S13 (Coyote Creek @ Spring St. mass emission station). | ||||
Temporal Representation: | The samples were collected between the dates of 2015-12-14 and 2015-12-14 | ||||
Environmental Conditions: | |||||
QAPP Information: | Municipal Separate Storm Sewer System (MS4) | ||||
QAPP Information Reference(s): | Municipal Separate Storm Sewer System (MS4) | ||||
|
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LOE ID: | 83897 | ||||
Pollutant: | Chromium | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total Dissolved | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 43 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) | ||||
Data Used to Assess Water Quality: | None of the 43 samples exceeded the hardness adjusted criteria. | ||||
Data Reference: | Data for Various Pollutants in Various Water Bodies in Sanitation Districts of Los Angeles County, 2005-2010. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Surface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | California Toxics Rule (CTR) lists criterion continuous concentrations (4-day average) to protect aquatic life in freshwater. The criterion in freshwater is hardness dependent for each sample and varies based on the ambient hardness during sampling. Section (b)(1) in CTR contains the hardness dependent formula for the metals criterion. If no hardness data were available, a value of 100 mg/L was used. | ||||
Guideline Reference: | Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition | ||||
Spatial Representation: | Samples were collected from Coyote Creek from location LB also called SG at three sublocations: RA, RA1, and RA1B. | ||||
Temporal Representation: | Samples were collected monthly from June 2006 through May of 2010. | ||||
Environmental Conditions: | |||||
QAPP Information: | The Biology Department of the San Jose Creek Water Quality Laboratory is responsible for collecting samples from receiving water stations along the San Gabriel River, Coyote Creek, San Jose Creek, Santa Clara River, and the Rio Hondo River. Data is collected for the Los Angeles Sanitation District NPDES permits. Some standard operating procedures for sampling were submitted, however no QA Project Plan was. | ||||
QAPP Information Reference(s): | |||||
|
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LOE ID: | 298169 | ||||
Pollutant: | Chromium | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 37 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed eSMR_Long Beach WRP data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 37 samples exceeded the water quality threshold for Chromium. | ||||
Data Reference: | WQ data from the California Integrated Water Quality System (CIWQS) assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The dissolved chromium (III) criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is is hardness dependent as described in Table 1 of paragraph (b)(1). The value calculated when using a default hardness of 100 mg/L is 180 ug/L (California Toxics Rule, 2000). | ||||
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: | The samples were collected at 1 monitoring site: 658085 (RSW-001). | ||||
Temporal Representation: | The samples were collected between the dates of 2011-07-11 and 2020-07-09 | ||||
Environmental Conditions: | |||||
QAPP Information: | Los Angeles County Sanitation Districts. 2020. Los Angeles County Sanitation Districts Receiving Water Monitoring Program. | ||||
QAPP Information Reference(s): | Los Angeles County Sanitation Districts Receiving Water Monitoring Program | ||||
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LOE ID: | 298168 | ||||
Pollutant: | Chromium | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 37 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed eSMR_Long Beach WRP data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 37 samples exceeded the water quality threshold for Chromium. | ||||
Data Reference: | WQ data from the California Integrated Water Quality System (CIWQS) assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The dissolved chromium (III) criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is is hardness dependent as described in Table 1 of paragraph (b)(1). The value calculated when using a default hardness of 100 mg/L is 180 ug/L (California Toxics Rule, 2000). | ||||
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: | The samples were collected at 1 monitoring site: 658086 (RSW-002). | ||||
Temporal Representation: | The samples were collected between the dates of 2011-07-11 and 2020-07-09 | ||||
Environmental Conditions: | |||||
QAPP Information: | Los Angeles County Sanitation Districts. 2020. Los Angeles County Sanitation Districts Receiving Water Monitoring Program. | ||||
QAPP Information Reference(s): | Los Angeles County Sanitation Districts Receiving Water Monitoring Program | ||||
DECISION ID |
132542 |
Region 4 |
Coyote Creek |
||
Pollutant: | Chromium, hexavalent |
Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | Do Not List on 303(d) list (TMDL required list)(2018) |
Revision Status | Revised |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status. The fractions dissolved and total dissolved are equivalent. These LOEs will be manually summed. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the CWA section 303(d) List in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. 0 of 98 and 0 of 14 samples exceeded the CRITERIA and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because applicable water quality standards are not being exceeded. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
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LOE ID: | 298109 | ||||
Pollutant: | Chromium, hexavalent | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed LA County MS4 data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Chromium VI. | ||||
Data Reference: | WQ data from the MS4 database assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The dissolved chromium (VI) criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is 11 ug/L (California Toxics Rule, 2000). | ||||
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: | The samples were collected at 1 monitoring site: LSGR-S13 (Coyote Creek at Spring St). | ||||
Temporal Representation: | The samples were collected between the dates of 2015-12-14 and 2015-12-14 | ||||
Environmental Conditions: | |||||
QAPP Information: | Municipal Separate Storm Sewer System (MS4) | ||||
QAPP Information Reference(s): | Municipal Separate Storm Sewer System (MS4) | ||||
|
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LOE ID: | 298189 | ||||
Pollutant: | Chromium, hexavalent | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 30 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed eSMR_Long Beach WRP data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 30 samples exceeded the water quality threshold for Chromium VI. | ||||
Data Reference: | WQ data from the California Integrated Water Quality System (CIWQS) assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The dissolved chromium (VI) criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is 11 ug/L (California Toxics Rule, 2000). | ||||
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: | The samples were collected at 1 monitoring site: 658086 (RSW-002). | ||||
Temporal Representation: | The samples were collected between the dates of 2012-10-10 and 2020-07-09 | ||||
Environmental Conditions: | |||||
QAPP Information: | Los Angeles County Sanitation Districts. 2020. Los Angeles County Sanitation Districts Receiving Water Monitoring Program. | ||||
QAPP Information Reference(s): | Los Angeles County Sanitation Districts Receiving Water Monitoring Program | ||||
|
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LOE ID: | 298108 | ||||
Pollutant: | Chromium, hexavalent | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed LA County MS4 data for Pacific Ocean Shoreline, Aliso HSA, at Blue Lagoon to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Chromium VI. | ||||
Data Reference: | WQ data from the MS4 database assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The dissolved chromium (VI) criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is 11 ug/L (California Toxics Rule, 2000). | ||||
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: | The samples were collected at 1 monitoring site: S13 (Coyote Creek @ Spring St. mass emission station). | ||||
Temporal Representation: | The samples were collected between the dates of 2015-12-14 and 2015-12-14 | ||||
Environmental Conditions: | |||||
QAPP Information: | Municipal Separate Storm Sewer System (MS4) | ||||
QAPP Information Reference(s): | Municipal Separate Storm Sewer System (MS4) | ||||
|
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LOE ID: | 298184 | ||||
Pollutant: | Chromium, hexavalent | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Not Recorded | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 7 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed eSMR_Long Beach WRP data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 7 samples exceeded the water quality threshold for Chromium VI. | ||||
Data Reference: | WQ data from the California Integrated Water Quality System (CIWQS) assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The dissolved chromium (VI) criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is 11 ug/L (California Toxics Rule, 2000). | ||||
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: | The samples were collected at 1 monitoring site: 658085 (RSW-001). | ||||
Temporal Representation: | The samples were collected between the dates of 2011-07-11 and 2019-07-01 | ||||
Environmental Conditions: | |||||
QAPP Information: | Los Angeles County Sanitation Districts. 2020. Los Angeles County Sanitation Districts Receiving Water Monitoring Program. | ||||
QAPP Information Reference(s): | Los Angeles County Sanitation Districts Receiving Water Monitoring Program | ||||
|
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LOE ID: | 298185 | ||||
Pollutant: | Chromium, hexavalent | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 30 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed eSMR_Long Beach WRP data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 30 samples exceeded the water quality threshold for Chromium VI. | ||||
Data Reference: | WQ data from the California Integrated Water Quality System (CIWQS) assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The dissolved chromium (VI) criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is 11 ug/L (California Toxics Rule, 2000). | ||||
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: | The samples were collected at 1 monitoring site: 658085 (RSW-001). | ||||
Temporal Representation: | The samples were collected between the dates of 2012-10-10 and 2020-07-09 | ||||
Environmental Conditions: | |||||
QAPP Information: | Los Angeles County Sanitation Districts. 2020. Los Angeles County Sanitation Districts Receiving Water Monitoring Program. | ||||
QAPP Information Reference(s): | Los Angeles County Sanitation Districts Receiving Water Monitoring Program | ||||
|
|||||
LOE ID: | 298188 | ||||
Pollutant: | Chromium, hexavalent | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Not Recorded | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 7 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed eSMR_Long Beach WRP data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 7 samples exceeded the water quality threshold for Chromium VI. | ||||
Data Reference: | WQ data from the California Integrated Water Quality System (CIWQS) assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The dissolved chromium (VI) criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is 11 ug/L (California Toxics Rule, 2000). | ||||
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: | The samples were collected at 1 monitoring site: 658086 (RSW-002). | ||||
Temporal Representation: | The samples were collected between the dates of 2011-07-11 and 2019-07-01 | ||||
Environmental Conditions: | |||||
QAPP Information: | Los Angeles County Sanitation Districts. 2020. Los Angeles County Sanitation Districts Receiving Water Monitoring Program. | ||||
QAPP Information Reference(s): | Los Angeles County Sanitation Districts Receiving Water Monitoring Program | ||||
|
|||||
LOE ID: | 83898 | ||||
Pollutant: | Chromium, hexavalent | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total Dissolved | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 36 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) | ||||
Data Used to Assess Water Quality: | None of the 36 samples exceeded the criteria of 11 ug/L. | ||||
Data Reference: | Data for Various Pollutants in Various Water Bodies in Sanitation Districts of Los Angeles County, 2005-2010. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Surface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | California Toxics Rule (CTR) lists criterion continuous concentrations (4-day average) to protect aquatic life in freshwater. The CTR for hexavalent chromium is 11 ug/L. | ||||
Guideline Reference: | Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition | ||||
Spatial Representation: | Samples were collected from Coyote Creek from location LB also called SG at three sublocations: RA, RA1, and RA1B. | ||||
Temporal Representation: | Samples were collected monthly from June 2006 through May of 2010. | ||||
Environmental Conditions: | |||||
QAPP Information: | The Biology Department of the San Jose Creek Water Quality Laboratory is responsible for collecting samples from receiving water stations along the San Gabriel River, Coyote Creek, San Jose Creek, Santa Clara River, and the Rio Hondo River. Data is collected for the Los Angeles Sanitation District NPDES permits. Some standard operating procedures for sampling were submitted, however no QA Project Plan was. | ||||
QAPP Information Reference(s): | |||||
DECISION ID |
132543 |
Region 4 |
Coyote Creek |
||
Pollutant: | Chromium, trivalent |
Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | New Decision |
Revision Status | Revised |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the CWA section 303(d) List in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. 0 of 68 samples exceeded the CRITERIA and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because applicable water quality standards are not being exceeded. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 298179 | ||||
Pollutant: | Chromium, trivalent | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Not Recorded | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 33 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed eSMR_Long Beach WRP data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 33 samples exceeded the water quality threshold for Chromium III. | ||||
Data Reference: | WQ data from the California Integrated Water Quality System (CIWQS) assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The dissolved chromium (III) criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is hardness dependent. The criterion when calculated using a default hardness of 100 mg/L is 180 ug/L (California Toxics Rule, 2000). | ||||
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: | The samples were collected at 1 monitoring site: 658086 (RSW-002). | ||||
Temporal Representation: | The samples were collected between the dates of 2011-07-11 and 2019-07-01 | ||||
Environmental Conditions: | |||||
QAPP Information: | Los Angeles County Sanitation Districts. 2020. Los Angeles County Sanitation Districts Receiving Water Monitoring Program. | ||||
QAPP Information Reference(s): | Los Angeles County Sanitation Districts Receiving Water Monitoring Program | ||||
|
|||||
LOE ID: | 298181 | ||||
Pollutant: | Chromium, trivalent | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Not Recorded | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 35 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed eSMR_Long Beach WRP data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 35 samples exceeded the water quality threshold for Chromium III. | ||||
Data Reference: | WQ data from the California Integrated Water Quality System (CIWQS) assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The dissolved chromium (III) criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is hardness dependent. The criterion when calculated using a default hardness of 100 mg/L is 180 ug/L (California Toxics Rule, 2000). | ||||
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: | The samples were collected at 1 monitoring site: 658085 (RSW-001). | ||||
Temporal Representation: | The samples were collected between the dates of 2011-07-11 and 2020-07-09 | ||||
Environmental Conditions: | |||||
QAPP Information: | Los Angeles County Sanitation Districts. 2020. Los Angeles County Sanitation Districts Receiving Water Monitoring Program. | ||||
QAPP Information Reference(s): | Los Angeles County Sanitation Districts Receiving Water Monitoring Program | ||||
DECISION ID |
132545 |
Region 4 |
Coyote Creek |
||
Pollutant: | Cyanide |
Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | Do Not List on 303(d) list (TMDL required list)(2018) |
Revision Status | Revised |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the section 303(d) list under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status. Six lines of evidence are available in the administrative record to assess this pollutant. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the section 303(d) list in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. 7 of 162, 3 of 74 and 1 of 4 samples exceeded the cyanide California Toxics Rule (CTR) criteria continuous concentration and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because applicable water quality standards are not being exceeded. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 298186 | ||||
Pollutant: | Cyanide | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Not Recorded | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 37 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed eSMR_Long Beach WRP data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 37 samples exceeded the water quality threshold for Cyanide. | ||||
Data Reference: | WQ data from the California Integrated Water Quality System (CIWQS) assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The cyanide criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is 5.2 ug/L (California Toxics Rule, 2000). | ||||
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: | The samples were collected at 1 monitoring site: 658085 (RSW-001). | ||||
Temporal Representation: | The samples were collected between the dates of 2011-07-11 and 2020-07-09 | ||||
Environmental Conditions: | |||||
QAPP Information: | Los Angeles County Sanitation Districts. 2020. Los Angeles County Sanitation Districts Receiving Water Monitoring Program. | ||||
QAPP Information Reference(s): | Los Angeles County Sanitation Districts Receiving Water Monitoring Program | ||||
|
|||||
LOE ID: | 298187 | ||||
Pollutant: | Cyanide | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Not Recorded | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 37 | ||||
Number of Exceedances: | 3 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed eSMR_Long Beach WRP data for Coyote Creek to determine beneficial use support and results are as follows: 3 of 37 samples exceeded the water quality threshold for Cyanide. | ||||
Data Reference: | WQ data from the California Integrated Water Quality System (CIWQS) assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The cyanide criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is 5.2 ug/L (California Toxics Rule, 2000). | ||||
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: | The samples were collected at 1 monitoring site: 658086 (RSW-002). | ||||
Temporal Representation: | The samples were collected between the dates of 2011-07-11 and 2020-07-09 | ||||
Environmental Conditions: | |||||
QAPP Information: | Los Angeles County Sanitation Districts. 2020. Los Angeles County Sanitation Districts Receiving Water Monitoring Program. | ||||
QAPP Information Reference(s): | Los Angeles County Sanitation Districts Receiving Water Monitoring Program | ||||
|
|||||
LOE ID: | 298121 | ||||
Pollutant: | Cyanide | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 4 | ||||
Number of Exceedances: | 1 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed LA County MS4 data for Coyote Creek to determine beneficial use support and results are as follows: 1 of 4 samples exceeded the water quality threshold for Cyanide. | ||||
Data Reference: | WQ data from the MS4 database assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The cyanide criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is 5.2 ug/L (California Toxics Rule, 2000). | ||||
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: | The samples were collected at 1 monitoring site: LSGR-S13 (Coyote Creek at Spring St). | ||||
Temporal Representation: | The samples were collected between the dates of 2016-02-04 and 2019-09-20 | ||||
Environmental Conditions: | |||||
QAPP Information: | Municipal Separate Storm Sewer System (MS4) | ||||
QAPP Information Reference(s): | Municipal Separate Storm Sewer System (MS4) | ||||
|
|||||
LOE ID: | 25093 | ||||
Pollutant: | Cyanide | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Aquatic Life Use: | Preservation of Rare & Endangered Species | Wildlife Habitat | ||||
Number of Samples: | 75 | ||||
Number of Exceedances: | 2 | ||||
Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) | ||||
Data Used to Assess Water Quality: | Two of 75 samples exceeded the California Toxics Rule (CTR) criterion continuous concentration for cyanide and zero of 75 samples exceeded the criterion maximum concentration. Water quality samples were taken and analyzed for cyanide in accordance with the Long Beach Waste Water Reclamation Plant permit monitoring and testing parameters. | ||||
Data Reference: | NPDES receiving water monitoring reports for Long Beach Water Reclamation Plant (NPDES No. CA0054119), Los Coyotes Water Reclamation Plant (NPDES No. CA0053716), Pomona Water Reclamation Plant (NPDES No. CA0053911), San Jose Creek Water Reclamation Plant (NPDES No. CA0053619), and Whittier Narrows Creek Water Reclamation Plant (NPDES No. CA0054011). | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The California Toxics Rule lists a criterion continuous concentration of 5.2 ug/L and a criterion maximum concentration of 22 ug/L for cyanide to protect aquatic life in freshwater. | ||||
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: | The Sanitation Districts of Los Angeles County conducted sampling in Coyote Creek in the following receiving water monitoring stations: station RA1 located upstream of discharge from Long Beach Water Reclamation Plant; station RA located downstream of discharge from Long Beach Water Reclamation Plant; and station R9 East located at the downstream end of the pavement lining (near Atherton Street) in the eastern low flow channel of San Gabriel River. | ||||
Temporal Representation: | Grab samples were taken and analyzed on an approximate monthly basis from August 2004 to February 2007. | ||||
Environmental Conditions: | |||||
QAPP Information: | Data was collected in compliance with the sampling and monitoring procedures detailed in Sanitation Districts of Los Angeles County Permit (No. CA0054119) Monitoring and Reporting Program. | ||||
QAPP Information Reference(s): | Long Beach Water Reclamation Plant Monitoring and Reporting Program for NPDES No. CA0054119 (County Sanitation Districts of Los Angeles County) | ||||
|
|||||
LOE ID: | 2434 | ||||
Pollutant: | Cyanide | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 78 | ||||
Number of Exceedances: | 1 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | One of 78 samples exceed the evaluation criteria (LACSD, 2006). | ||||
Data Reference: | Placeholder reference 2006 303(d) | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | CTR Criteria Continuous Concentration of 0.0052 mg/l is the highest concentration of Cyanide to which aquatic life can be exposed for an extended period of time (four days) without deleterious effects applicable to protect aquatic life beneficial uses. | ||||
Objective/Criterion Reference: | Placeholder reference 2006 303(d) | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Three sampling locations: receiving water stations R9E, RA, RA1. | ||||
Temporal Representation: | Samples collected from July 2001 to July 2005. | ||||
Environmental Conditions: | |||||
QAPP Information: | QA Info Missing | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 2433 | ||||
Pollutant: | Cyanide | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 9 | ||||
Number of Exceedances: | 4 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Numeric data generated from 9 samples taken from 11/24/01 to 4/30/03 at one to two-week sampling interval. Four (4) samples exceeded the Cyanide Continuous Criterion Concentration, which equals the highest concentration of a pollutant to which aquatic life can be exposed for an extended period of time (4 days) without deleterious effects (LACDPW, 2004c). | ||||
Data Reference: | Placeholder reference 2006 303(d) | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | CTR Criteria Continuous Concentration of 0.0052 mg/l is the highest concentration of cyanide to which aquatic life can be exposed for an extended period of time (four days) without deleterious effects applicable to protect aquatic life beneficial uses. | ||||
Objective/Criterion Reference: | Placeholder reference 2006 303(d) | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | One sample site sampled during the dry and wet season beginning from 11/24/01 through 4/30/03 at approximately one to two week intervals. | ||||
Temporal Representation: | Nine samples where taken during the wet and dry season from 11/24/01 to 4/30/03 at approximately one to two week intervals as part of the Los Angeles County Storm water monitoring program prepared by the Los Angeles County Department of Public Works. | ||||
Environmental Conditions: | The Coyote Creek Monitoring Station (S13) is located at the existing ACOE stream gauge station (Stream Gauge No. F354-R) below Spring Street in the lower San Gabriel River watershed. The site assists in determining mass loading for the San Gabriel River watershed. At this location, the upstream tributary area is 150 square miles (extending into Orange County). The sampling site was chosen to avoid backwater effects from the San Gabriel River. Coyote Creek, at the gauging station, is a concrete lined trapezoidal channel. The Coyote Creek sampling location has been an active stream gauging station since 1963. | ||||
QAPP Information: | Evaluation of Analytes and QA/QC Specifications for Monitoring Program (Woodward-Clyde, 1996) Los Angeles County Department of Public Works. | ||||
QAPP Information Reference(s): | |||||
DECISION ID |
132583 |
Region 4 |
Coyote Creek |
||
Pollutant: | Cyfluthrin |
Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | New Decision |
Revision Status | Revised |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded. |
|
|||||
LOE ID: | 298280 | ||||
Pollutant: | Cyfluthrin | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 0 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed San Gabriel River Regional Monitoring Program data for Coyote Creek to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Cyfluthrin. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5. | ||||
Data Reference: | Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | The chronic criterion for cyfluthrin is 0.2 ng/L (expressed as a 4-day average). If the freely dissolved concentrations of cyfluthrin were reported or could be calculated then these values were used for this assessment. In the absence of freely dissolved concentrations, total concentrations were used. | ||||
Guideline Reference: | Water Quality Criteria Report for Cyfluthrin | ||||
Spatial Representation: | The samples were collected at 1 monitoring site: SMC01278_SGRRMP (SGLR01278_SGRRMP). | ||||
Temporal Representation: | Data for this waterbody were collected over the date range 2016-06-23 to 2016-06-23 | ||||
Environmental Conditions: | |||||
QAPP Information: | Aquatic Bioassay & Consulting Laboratories. 2019. San Gabriel River Regional Monitoring Program. | ||||
QAPP Information Reference(s): | San Gabriel River Regional Monitoring Program | ||||
DECISION ID |
132585 |
Region 4 |
Coyote Creek |
||
Pollutant: | Cyhalothrin, Lambda |
Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | New Decision |
Revision Status | Revised |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded. |
|
|||||
LOE ID: | 298294 | ||||
Pollutant: | Cyhalothrin, Lambda | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 0 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed San Gabriel River Regional Monitoring Program data for Coyote Creek to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Lambda-cyhalothrin. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5. | ||||
Data Reference: | Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan for the Los Angeles Region states that: Surface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | The chronic criterion for lambda-cyhalothrin is 0.3 ng/L (expressed as a 4-day average). If the freely dissolved concentrations of lambda-cyhalothrin were reported or could be calculated then these values were used for this assessment. In the absence of freely dissolved concentrations, total concentrations were used. | ||||
Guideline Reference: | Water Quality Criteria Report for Lambda-cyhalothrin | ||||
Spatial Representation: | The samples were collected at 1 monitoring site: SMC01278_SGRRMP (SGLR01278_SGRRMP). | ||||
Temporal Representation: | Data for this waterbody were collected over the date range 2016-06-23 to 2016-06-23 | ||||
Environmental Conditions: | |||||
QAPP Information: | Aquatic Bioassay & Consulting Laboratories. 2019. San Gabriel River Regional Monitoring Program. | ||||
QAPP Information Reference(s): | San Gabriel River Regional Monitoring Program | ||||
DECISION ID |
132578 |
Region 4 |
Coyote Creek |
||
Pollutant: | Cypermethrin |
Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | New Decision |
Revision Status | Revised |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded. |
|
|||||
LOE ID: | 298281 | ||||
Pollutant: | Cypermethrin | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 0 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed San Gabriel River Regional Monitoring Program data for Coyote Creek to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Cypermethrin. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5. | ||||
Data Reference: | Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | The chronic criterion for cypermethrin is 0.3 ng/L (expressed as a 4-day average). If the freely dissolved concentrations of cypermethrin were reported or could be calculated then these values were used for this assessment. In the absence of freely dissolved concentrations, total concentrations were used. | ||||
Guideline Reference: | Water Quality Criteria Report for Cypermethrin | ||||
Spatial Representation: | The samples were collected at 1 monitoring site: SMC01278_SGRRMP (SGLR01278_SGRRMP). | ||||
Temporal Representation: | Data for this waterbody were collected over the date range 2016-06-23 to 2016-06-23 | ||||
Environmental Conditions: | |||||
QAPP Information: | Aquatic Bioassay & Consulting Laboratories. 2019. San Gabriel River Regional Monitoring Program. | ||||
QAPP Information Reference(s): | San Gabriel River Regional Monitoring Program | ||||
DECISION ID |
149517 |
Region 4 |
Coyote Creek |
||
Pollutant: | DDT (Dichlorodiphenyltrichloroethane) |
Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | New Decision |
Revision Status | Revised |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded. |
|
|||||
LOE ID: | 298178 | ||||
Pollutant: | DDT (Dichlorodiphenyltrichloroethane) | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Not Recorded | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 0 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed eSMR_Long Beach WRP data for Coyote Creek to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDT(p,p'). Although a total of 19 samples were collected, 19 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5. | ||||
Data Reference: | WQ data from the California Integrated Water Quality System (CIWQS) assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The DDT(4,4') criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is 0.001 ug/L (California Toxics Rule, 2000). | ||||
Objective/Criterion Reference: | 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: | The samples were collected at 1 monitoring site: 658086 (RSW-002). | ||||
Temporal Representation: | Data for this waterbody were collected over the date range 2011-07-11 to 2020-07-09 | ||||
Environmental Conditions: | |||||
QAPP Information: | Los Angeles County Sanitation Districts. 2020. Los Angeles County Sanitation Districts Receiving Water Monitoring Program. | ||||
QAPP Information Reference(s): | Los Angeles County Sanitation Districts Receiving Water Monitoring Program | ||||
|
|||||
LOE ID: | 298182 | ||||
Pollutant: | DDT (Dichlorodiphenyltrichloroethane) | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Not Recorded | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 0 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed eSMR_Long Beach WRP data for Coyote Creek to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for DDT(p,p'). Although a total of 19 samples were collected, 19 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5. | ||||
Data Reference: | WQ data from the California Integrated Water Quality System (CIWQS) assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The DDT(4,4') criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is 0.001 ug/L (California Toxics Rule, 2000). | ||||
Objective/Criterion Reference: | 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: | The samples were collected at 1 monitoring site: 658085 (RSW-001). | ||||
Temporal Representation: | Data for this waterbody were collected over the date range 2011-07-11 to 2020-07-09 | ||||
Environmental Conditions: | |||||
QAPP Information: | Los Angeles County Sanitation Districts. 2020. Los Angeles County Sanitation Districts Receiving Water Monitoring Program. | ||||
QAPP Information Reference(s): | Los Angeles County Sanitation Districts Receiving Water Monitoring Program | ||||
DECISION ID |
132584 |
Region 4 |
Coyote Creek |
||
Pollutant: | Deltamethrin |
Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | New Decision |
Revision Status | Revised |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded. |
|
|||||
LOE ID: | 298282 | ||||
Pollutant: | Deltamethrin | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 0 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed San Gabriel River Regional Monitoring Program data for Coyote Creek to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Deltamethrin. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5. | ||||
Data Reference: | Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | The evaluation guideline for deltamethrin is the USEPA Aquatic Life Benchmark of 0.000026 ug/L for an invertebrate (chronic). | ||||
Guideline Reference: | OPP Aquatic Life Benchmarks | ||||
Spatial Representation: | The samples were collected at 1 monitoring site: SMC01278_SGRRMP (SGLR01278_SGRRMP). | ||||
Temporal Representation: | Data for this waterbody were collected over the date range 2016-06-23 to 2016-06-23 | ||||
Environmental Conditions: | |||||
QAPP Information: | Aquatic Bioassay & Consulting Laboratories. 2019. San Gabriel River Regional Monitoring Program. | ||||
QAPP Information Reference(s): | San Gabriel River Regional Monitoring Program | ||||
DECISION ID |
132548 |
Region 4 |
Coyote Creek |
||
Pollutant: | Dieldrin |
Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | New Decision |
Revision Status | Revised |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the CWA section 303(d) List in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. 0 of 38 samples exceeded the CRITERIA and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because applicable water quality standards are not being exceeded. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 298200 | ||||
Pollutant: | Dieldrin | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Not Recorded | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 19 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed eSMR_Long Beach WRP data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 19 samples exceeded the water quality threshold for Dieldrin. | ||||
Data Reference: | WQ data from the California Integrated Water Quality System (CIWQS) assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The dieldrin criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is 0.056 ug/L (California Toxics Rule, 2000). | ||||
Objective/Criterion Reference: | 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: | The samples were collected at 1 monitoring site: 658085 (RSW-001). | ||||
Temporal Representation: | The samples were collected between the dates of 2011-07-11 and 2020-07-09 | ||||
Environmental Conditions: | |||||
QAPP Information: | Los Angeles County Sanitation Districts. 2020. Los Angeles County Sanitation Districts Receiving Water Monitoring Program. | ||||
QAPP Information Reference(s): | Los Angeles County Sanitation Districts Receiving Water Monitoring Program | ||||
|
|||||
LOE ID: | 298198 | ||||
Pollutant: | Dieldrin | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Not Recorded | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 19 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed eSMR_Long Beach WRP data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 19 samples exceeded the water quality threshold for Dieldrin. | ||||
Data Reference: | WQ data from the California Integrated Water Quality System (CIWQS) assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The dieldrin criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is 0.056 ug/L (California Toxics Rule, 2000). | ||||
Objective/Criterion Reference: | 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: | The samples were collected at 1 monitoring site: 658086 (RSW-002). | ||||
Temporal Representation: | The samples were collected between the dates of 2011-07-11 and 2020-07-09 | ||||
Environmental Conditions: | |||||
QAPP Information: | Los Angeles County Sanitation Districts. 2020. Los Angeles County Sanitation Districts Receiving Water Monitoring Program. | ||||
QAPP Information Reference(s): | Los Angeles County Sanitation Districts Receiving Water Monitoring Program | ||||
DECISION ID |
132549 |
Region 4 |
Coyote Creek |
||
Pollutant: | Endosulfan sulfate |
Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | New Decision |
Revision Status | Revised |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the CWA section 303(d) List in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. 0 of 38 samples exceeded the CRITERIA and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because applicable water quality standards are not being exceeded. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 298201 | ||||
Pollutant: | Endosulfan sulfate | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Not Recorded | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 19 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed eSMR_Long Beach WRP data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 19 samples exceeded the water quality threshold for Endosulfan Sulfate. | ||||
Data Reference: | WQ data from the California Integrated Water Quality System (CIWQS) assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | The USEPA National Recommended Water Quality Criteria toxicity threshold for endosulfan sulfate for freshwater aquatic life protection is 0.056 ug/l (24 hour average) | ||||
Guideline Reference: | National Recommended Water Quality Criteria. United States Environmental Protection Agency. Office of Water. Current as of 08/03/2016. | ||||
Spatial Representation: | The samples were collected at 1 monitoring site: 658085 (RSW-001). | ||||
Temporal Representation: | The samples were collected between the dates of 2011-07-11 and 2020-07-09 | ||||
Environmental Conditions: | |||||
QAPP Information: | Los Angeles County Sanitation Districts. 2020. Los Angeles County Sanitation Districts Receiving Water Monitoring Program. | ||||
QAPP Information Reference(s): | Los Angeles County Sanitation Districts Receiving Water Monitoring Program | ||||
|
|||||
LOE ID: | 298199 | ||||
Pollutant: | Endosulfan sulfate | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Not Recorded | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 19 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed eSMR_Long Beach WRP data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 19 samples exceeded the water quality threshold for Endosulfan Sulfate. | ||||
Data Reference: | WQ data from the California Integrated Water Quality System (CIWQS) assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | The USEPA National Recommended Water Quality Criteria toxicity threshold for endosulfan sulfate for freshwater aquatic life protection is 0.056 ug/l (24 hour average) | ||||
Guideline Reference: | National Recommended Water Quality Criteria. United States Environmental Protection Agency. Office of Water. Current as of 08/03/2016. | ||||
Spatial Representation: | The samples were collected at 1 monitoring site: 658086 (RSW-002). | ||||
Temporal Representation: | The samples were collected between the dates of 2011-07-11 and 2020-07-09 | ||||
Environmental Conditions: | |||||
QAPP Information: | Los Angeles County Sanitation Districts. 2020. Los Angeles County Sanitation Districts Receiving Water Monitoring Program. | ||||
QAPP Information Reference(s): | Los Angeles County Sanitation Districts Receiving Water Monitoring Program | ||||
DECISION ID |
132550 |
Region 4 |
Coyote Creek |
||
Pollutant: | Endrin |
Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | Do Not List on 303(d) list (TMDL required list)(2018) |
Revision Status | Revised |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status. 3 lines of evidence are available in the administrative record to assess this pollutant. 0 of 38 samples exceeded the CRITERIA. 0 of 2 samples exceeded the CRITERIA. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the CWA section 303(d) List in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. 0 of 38 and 0 of 2 samples exceeded the criteria and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because applicable water quality standards are not being exceeded. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 298191 | ||||
Pollutant: | Endrin | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Not Recorded | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 19 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed eSMR_Long Beach WRP data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 19 samples exceeded the water quality threshold for Endrin. | ||||
Data Reference: | WQ data from the California Integrated Water Quality System (CIWQS) assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The endrin criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is 0.036 ug/L (California Toxics Rule, 2000). | ||||
Objective/Criterion Reference: | 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: | The samples were collected at 1 monitoring site: 658086 (RSW-002). | ||||
Temporal Representation: | The samples were collected between the dates of 2011-07-11 and 2020-07-09 | ||||
Environmental Conditions: | |||||
QAPP Information: | Los Angeles County Sanitation Districts. 2020. Los Angeles County Sanitation Districts Receiving Water Monitoring Program. | ||||
QAPP Information Reference(s): | Los Angeles County Sanitation Districts Receiving Water Monitoring Program | ||||
|
|||||
LOE ID: | 83850 | ||||
Pollutant: | Endrin | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 2 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | None of the two samples exceeded the water quality criteria/objective. | ||||
Data Reference: | Data for Various Pollutants in Various Water Bodies in Sanitation Districts of Los Angeles County, 2005-2010. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Region 4 Basin Plan objective is "No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses." | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | California Toxic Rule criteria fresh aquatic life protection continuous concentration (4-day average)is 0.036 ug/L. | ||||
Guideline Reference: | Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition | ||||
Spatial Representation: | Two samples were collected from Coyote creek at locations SGR_LB_RSW-001 and SGR_LB_RSW-002. The location descriptions are: Long Beach Station RSW-001 (RA-1) and Long Beach Station RSW-002 (RA) | ||||
Temporal Representation: | One water sample from each location was collected in 1/11/2010. | ||||
Environmental Conditions: | There was no special environmental conditions reported with data. | ||||
QAPP Information: | An excel spreadsheet of laboratory information called "LIMS" which gave reporting limits for each analyte evaluated accompanied each data package. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 298203 | ||||
Pollutant: | Endrin | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Not Recorded | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 19 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed eSMR_Long Beach WRP data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 19 samples exceeded the water quality threshold for Endrin. | ||||
Data Reference: | WQ data from the California Integrated Water Quality System (CIWQS) assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The endrin criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is 0.036 ug/L (California Toxics Rule, 2000). | ||||
Objective/Criterion Reference: | 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: | The samples were collected at 1 monitoring site: 658085 (RSW-001). | ||||
Temporal Representation: | The samples were collected between the dates of 2011-07-11 and 2020-07-09 | ||||
Environmental Conditions: | |||||
QAPP Information: | Los Angeles County Sanitation Districts. 2020. Los Angeles County Sanitation Districts Receiving Water Monitoring Program. | ||||
QAPP Information Reference(s): | Los Angeles County Sanitation Districts Receiving Water Monitoring Program | ||||
DECISION ID |
132588 |
Region 4 |
Coyote Creek |
||
Pollutant: | Esfenvalerate/Fenvalerate |
Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | New Decision |
Revision Status | Revised |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded. |
|
|||||
LOE ID: | 298283 | ||||
Pollutant: | Esfenvalerate/Fenvalerate | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 0 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed San Gabriel River Regional Monitoring Program data for Coyote Creek to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Esfenvalerate. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5. | ||||
Data Reference: | Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | The chronic criterion for esfenvalerate is 0.3 ng/L (expressed as a 4-day average). If the freely dissolved concentrations of esfenvalerate were reported or could be calculated then these values were used for this assessment. In the absence of freely dissolved concentrations, total concentrations were used. | ||||
Guideline Reference: | Water Quality Criteria Report for Esfenvalerate | ||||
Spatial Representation: | The samples were collected at 1 monitoring site: SMC01278_SGRRMP (SGLR01278_SGRRMP). | ||||
Temporal Representation: | Data for this waterbody were collected over the date range 2016-06-23 to 2016-06-23 | ||||
Environmental Conditions: | |||||
QAPP Information: | Aquatic Bioassay & Consulting Laboratories. 2019. San Gabriel River Regional Monitoring Program. | ||||
QAPP Information Reference(s): | San Gabriel River Regional Monitoring Program | ||||
DECISION ID |
132587 |
Region 4 |
Coyote Creek |
||
Pollutant: | Fenpropathrin |
Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | New Decision |
Revision Status | Revised |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded. |
|
|||||
LOE ID: | 298284 | ||||
Pollutant: | Fenpropathrin | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 0 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed San Gabriel River Regional Monitoring Program data for Coyote Creek to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Fenpropathrin. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5. | ||||
Data Reference: | Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | The evaluation guideline for Fenpropathrin is the USEPA Aquatic Life Benchmark of 0.0015 ug/L for an invertebrate (chronic). | ||||
Guideline Reference: | OPP Aquatic Life Benchmarks | ||||
Spatial Representation: | The samples were collected at 1 monitoring site: SMC01278_SGRRMP (SGLR01278_SGRRMP). | ||||
Temporal Representation: | Data for this waterbody were collected over the date range 2016-06-23 to 2016-06-23 | ||||
Environmental Conditions: | |||||
QAPP Information: | Aquatic Bioassay & Consulting Laboratories. 2019. San Gabriel River Regional Monitoring Program. | ||||
QAPP Information Reference(s): | San Gabriel River Regional Monitoring Program | ||||
DECISION ID |
132532 |
Region 4 |
Coyote Creek |
||
Pollutant: | Fenvalerate |
Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | New Decision |
Revision Status | Revised |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded. |
|
|||||
LOE ID: | 298285 | ||||
Pollutant: | Fenvalerate | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed San Gabriel River Regional Monitoring Program data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Fenvalerate. | ||||
Data Reference: | Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | The evaluation guideline for fenvalerate is the LC50 of 1.13 ug/L for fathead minnow, Pimephales promelas. (USEPA Office of Pesticide Programs Ecotoxicity database) | ||||
Guideline Reference: | OPP Pesticide Ecotoxicity Database. | ||||
Spatial Representation: | The samples were collected at 1 monitoring site: SMC01278_SGRRMP (SGLR01278_SGRRMP). | ||||
Temporal Representation: | The samples were collected between the dates of 2016-06-23 and 2016-06-23 | ||||
Environmental Conditions: | |||||
QAPP Information: | Aquatic Bioassay & Consulting Laboratories. 2019. San Gabriel River Regional Monitoring Program. | ||||
QAPP Information Reference(s): | San Gabriel River Regional Monitoring Program | ||||
DECISION ID |
132551 |
Region 4 |
Coyote Creek |
||
Pollutant: | Glyphosate |
Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | New Decision |
Revision Status | Revised |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded. |
|
|||||
LOE ID: | 298117 | ||||
Pollutant: | Glyphosate | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed LA County MS4 data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Glyphosate. | ||||
Data Reference: | WQ data from the MS4 database assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan for the Los Angeles Region states that: Surface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | The evaluation guideline for glyphosate is the USEPA Aquatic Life Benchmark of 11,900 ug/L for a vascular plant (acute). | ||||
Guideline Reference: | OPP Aquatic Life Benchmarks | ||||
Spatial Representation: | The samples were collected at 1 monitoring site: LSGR-S13 (Coyote Creek at Spring St). | ||||
Temporal Representation: | The samples were collected between the dates of 2015-12-14 and 2015-12-14 | ||||
Environmental Conditions: | |||||
QAPP Information: | Municipal Separate Storm Sewer System (MS4) | ||||
QAPP Information Reference(s): | Municipal Separate Storm Sewer System (MS4) | ||||
|
|||||
LOE ID: | 298118 | ||||
Pollutant: | Glyphosate | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed LA County MS4 data for Pacific Ocean Shoreline, Aliso HSA, at Blue Lagoon to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Glyphosate. | ||||
Data Reference: | WQ data from the MS4 database assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan for the Los Angeles Region states that: Surface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | The evaluation guideline for glyphosate is the USEPA Aquatic Life Benchmark of 11,900 ug/L for a vascular plant (acute). | ||||
Guideline Reference: | OPP Aquatic Life Benchmarks | ||||
Spatial Representation: | The samples were collected at 1 monitoring site: S13 (Coyote Creek @ Spring St. mass emission station). | ||||
Temporal Representation: | The samples were collected between the dates of 2015-12-14 and 2015-12-14 | ||||
Environmental Conditions: | |||||
QAPP Information: | Municipal Separate Storm Sewer System (MS4) | ||||
QAPP Information Reference(s): | Municipal Separate Storm Sewer System (MS4) | ||||
DECISION ID |
132552 |
Region 4 |
Coyote Creek |
||
Pollutant: | Heptachlor |
Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | New Decision |
Revision Status | Revised |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded. |
|
|||||
LOE ID: | 298204 | ||||
Pollutant: | Heptachlor | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Not Recorded | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 0 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed eSMR_Long Beach WRP data for Coyote Creek to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor. Although a total of 19 samples were collected, 19 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5. | ||||
Data Reference: | WQ data from the California Integrated Water Quality System (CIWQS) assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The heptachlor criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is 0.0038 ug/L (California Toxics Rule, 2000). | ||||
Objective/Criterion Reference: | 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: | The samples were collected at 1 monitoring site: 658086 (RSW-002). | ||||
Temporal Representation: | Data for this waterbody were collected over the date range 2011-07-11 to 2020-07-09 | ||||
Environmental Conditions: | |||||
QAPP Information: | Los Angeles County Sanitation Districts. 2020. Los Angeles County Sanitation Districts Receiving Water Monitoring Program. | ||||
QAPP Information Reference(s): | Los Angeles County Sanitation Districts Receiving Water Monitoring Program | ||||
|
|||||
LOE ID: | 298206 | ||||
Pollutant: | Heptachlor | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Not Recorded | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 0 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed eSMR_Long Beach WRP data for Coyote Creek to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor. Although a total of 19 samples were collected, 19 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5. | ||||
Data Reference: | WQ data from the California Integrated Water Quality System (CIWQS) assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The heptachlor criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is 0.0038 ug/L (California Toxics Rule, 2000). | ||||
Objective/Criterion Reference: | 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: | The samples were collected at 1 monitoring site: 658085 (RSW-001). | ||||
Temporal Representation: | Data for this waterbody were collected over the date range 2011-07-11 to 2020-07-09 | ||||
Environmental Conditions: | |||||
QAPP Information: | Los Angeles County Sanitation Districts. 2020. Los Angeles County Sanitation Districts Receiving Water Monitoring Program. | ||||
QAPP Information Reference(s): | Los Angeles County Sanitation Districts Receiving Water Monitoring Program | ||||
DECISION ID |
132553 |
Region 4 |
Coyote Creek |
||
Pollutant: | Heptachlor epoxide |
Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | Do Not List on 303(d) list (TMDL required list)(2018) |
Revision Status | Revised |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded. |
|
|||||
LOE ID: | 83854 | ||||
Pollutant: | Heptachlor epoxide | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 0 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) | ||||
Data Used to Assess Water Quality: | The reporting limit for the non-detect sample was 0.01 ug/L which is equal to the water quality objective, therefore these data are not of sufficient resolution to determine if water quality standards are being achieved. | ||||
Data Reference: | Data for Various Pollutants in Various Water Bodies in Sanitation Districts of Los Angeles County, 2005-2010. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Region 4 Basin Plan objective is "No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses." | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | California Toxic Rule criteria fresh aquatic life protection continuous concentration (4-day average)is 0.0038 ug/L. | ||||
Guideline Reference: | Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition | ||||
Spatial Representation: | Two samples were collected from Coyote creek at locations SGR_LB_RSW-001 and SGR_LB_RSW-002. The location descriptions are: Long Beach Station RSW-001 (RA-1) and Long Beach Station RSW-002 (RA) | ||||
Temporal Representation: | One water sample from each location was collected in 1/11/2010. | ||||
Environmental Conditions: | There was no special environmental conditions reported with data. | ||||
QAPP Information: | An excel spreadsheet of laboratory information called "LIMS" which gave reporting limits for each analyte evaluated accompanied each data package. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 298210 | ||||
Pollutant: | Heptachlor epoxide | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Not Recorded | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 0 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed eSMR_Long Beach WRP data for Coyote Creek to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor Epoxide. Although a total of 19 samples were collected, 19 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5. | ||||
Data Reference: | WQ data from the California Integrated Water Quality System (CIWQS) assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The heptachlor epoxide criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is 0.0038 ug/L (California Toxics Rule, 2000). | ||||
Objective/Criterion Reference: | 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: | The samples were collected at 1 monitoring site: 658085 (RSW-001). | ||||
Temporal Representation: | Data for this waterbody were collected over the date range 2011-07-11 to 2020-07-09 | ||||
Environmental Conditions: | |||||
QAPP Information: | Los Angeles County Sanitation Districts. 2020. Los Angeles County Sanitation Districts Receiving Water Monitoring Program. | ||||
QAPP Information Reference(s): | Los Angeles County Sanitation Districts Receiving Water Monitoring Program | ||||
|
|||||
LOE ID: | 298214 | ||||
Pollutant: | Heptachlor epoxide | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Not Recorded | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 0 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed eSMR_Long Beach WRP data for Coyote Creek to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Heptachlor Epoxide. Although a total of 19 samples were collected, 19 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5. | ||||
Data Reference: | WQ data from the California Integrated Water Quality System (CIWQS) assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The heptachlor epoxide criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is 0.0038 ug/L (California Toxics Rule, 2000). | ||||
Objective/Criterion Reference: | 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: | The samples were collected at 1 monitoring site: 658086 (RSW-002). | ||||
Temporal Representation: | Data for this waterbody were collected over the date range 2011-07-11 to 2020-07-09 | ||||
Environmental Conditions: | |||||
QAPP Information: | Los Angeles County Sanitation Districts. 2020. Los Angeles County Sanitation Districts Receiving Water Monitoring Program. | ||||
QAPP Information Reference(s): | Los Angeles County Sanitation Districts Receiving Water Monitoring Program | ||||
DECISION ID |
132556 |
Region 4 |
Coyote Creek |
||
Pollutant: | Lindane/gamma Hexachlorocyclohexane (gamma-HCH) |
Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | Do Not List on 303(d) list (TMDL required list)(2018) |
Revision Status | Revised |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the section 303(d) list under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the section 303(d) list in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. 2 of 75 and 0 of 38 samples exceeded criteria for Lindane in Coyote Creek and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because applicable water quality standards are not being exceeded. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 25111 | ||||
Pollutant: | Lindane/gamma Hexachlorocyclohexane (gamma-HCH) | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Water Contact Recreation | ||||
Number of Samples: | 75 | ||||
Number of Exceedances: | 2 | ||||
Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) | ||||
Data Used to Assess Water Quality: | Two of 75 samples exceeded the California Toxicis Rule (CTR) water and organism consumption criteria for lindane in Coyote Creek. Water quality samples were taken and analyzed for lindane in accordance with the Sanitation Districts of Los Angeles County permit monitoring and testing parameters. | ||||
Data Reference: | NPDES receiving water monitoring reports for Long Beach Water Reclamation Plant (NPDES No. CA0054119), Los Coyotes Water Reclamation Plant (NPDES No. CA0053716), Pomona Water Reclamation Plant (NPDES No. CA0053911), San Jose Creek Water Reclamation Plant (NPDES No. CA0053619), and Whittier Narrows Creek Water Reclamation Plant (NPDES No. CA0054011). | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Lindane is listed as gamma benzene hexachloride (BHC) in CTR. The CTR lists a water and organism consumption criteria of 0.019 ug/L for lindane to protect human health. | ||||
Objective/Criterion Reference: | California Code of Regulations, Title 22, Division 4, Chapter 15. Domestic Water Quality and Monitoring | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | The Sanitation Districts of Los Angeles County conducted sampling in Coyote Creek at receiving water station RA1 located upstream of discharge from Long Beach Water Reclamation Plant and receiving water station RA located downstream of discharge from Long Beach Water Reclamation Plant. | ||||
Temporal Representation: | Grab samples were taken and analyzed on a bimonthly and monthly basis from June 2004 to February 2007. | ||||
Environmental Conditions: | |||||
QAPP Information: | Data was collected in compliance with the sampling and monitoring procedures detailed in Sanitation Districts of Los Angeles County Permit (No. CA0054119) Monitoring and Reporting Program. | ||||
QAPP Information Reference(s): | Long Beach Water Reclamation Plant Monitoring and Reporting Program for NPDES No. CA0054119 (County Sanitation Districts of Los Angeles County) | ||||
|
|||||
LOE ID: | 298207 | ||||
Pollutant: | Lindane/gamma Hexachlorocyclohexane (gamma-HCH) | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Not Recorded | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 19 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed eSMR_Long Beach WRP data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 19 samples exceeded the water quality threshold for HCH, gamma-. | ||||
Data Reference: | WQ data from the California Integrated Water Quality System (CIWQS) assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The gamma-BHC (Lindane, gamma-HCH) criterion maximum concentration to protect aquatic life in freshwater is 0.95 ug/L. (California Toxics Rule, 2000). | ||||
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: | The samples were collected at 1 monitoring site: 658086 (RSW-002). | ||||
Temporal Representation: | The samples were collected between the dates of 2011-07-11 and 2020-07-09 | ||||
Environmental Conditions: | |||||
QAPP Information: | Los Angeles County Sanitation Districts. 2020. Los Angeles County Sanitation Districts Receiving Water Monitoring Program. | ||||
QAPP Information Reference(s): | Los Angeles County Sanitation Districts Receiving Water Monitoring Program | ||||
|
|||||
LOE ID: | 298208 | ||||
Pollutant: | Lindane/gamma Hexachlorocyclohexane (gamma-HCH) | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Not Recorded | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 19 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed eSMR_Long Beach WRP data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 19 samples exceeded the water quality threshold for HCH, gamma-. | ||||
Data Reference: | WQ data from the California Integrated Water Quality System (CIWQS) assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The gamma-BHC (Lindane, gamma-HCH) criterion maximum concentration to protect aquatic life in freshwater is 0.95 ug/L. (California Toxics Rule, 2000). | ||||
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: | The samples were collected at 1 monitoring site: 658085 (RSW-001). | ||||
Temporal Representation: | The samples were collected between the dates of 2011-07-11 and 2020-07-09 | ||||
Environmental Conditions: | |||||
QAPP Information: | Los Angeles County Sanitation Districts. 2020. Los Angeles County Sanitation Districts Receiving Water Monitoring Program. | ||||
QAPP Information Reference(s): | Los Angeles County Sanitation Districts Receiving Water Monitoring Program | ||||
DECISION ID |
149519 |
Region 4 |
Coyote Creek |
||
Pollutant: | Mercury |
Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | Do Not List on 303(d) list (TMDL required list)(2018) |
Revision Status | Revised |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the CWA section 303(d) List in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. 0 of 94, 0 of 74, 0 of 17, and 0 of 82 samples exceeded the CRITERIA and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because applicable water quality standards are not being exceeded. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 298224 | ||||
Pollutant: | Mercury | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Not Recorded | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 37 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed eSMR_Long Beach WRP data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 37 samples exceeded the water quality threshold for Mercury. | ||||
Data Reference: | WQ data from the California Integrated Water Quality System (CIWQS) assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan for the Los Angeles Region states that: Surface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | National Recommended Water Quality Criteria Continuous Concentration (4-day average concentrations) for freshwater aquatic organisms exposure to total mercury is 0.77 ug/L. | ||||
Guideline Reference: | National Recommended Water Quality Criteria. United States Environmental Protection Agency. Office of Water. Current as of 08/03/2016. | ||||
Spatial Representation: | The samples were collected at 1 monitoring site: 658085 (RSW-001). | ||||
Temporal Representation: | The samples were collected between the dates of 2011-07-11 and 2020-07-09 | ||||
Environmental Conditions: | |||||
QAPP Information: | Los Angeles County Sanitation Districts. 2020. Los Angeles County Sanitation Districts Receiving Water Monitoring Program. | ||||
QAPP Information Reference(s): | Los Angeles County Sanitation Districts Receiving Water Monitoring Program | ||||
|
|||||
LOE ID: | 298298 | ||||
Pollutant: | Mercury | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 2 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed San Gabriel River Regional Monitoring Program data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 2 samples exceeded the water quality threshold for Mercury. | ||||
Data Reference: | Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan for the Los Angeles Region states that: Surface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | National Recommended Water Quality Criteria Continuous Concentration (4-day average concentrations) for freshwater aquatic organisms exposure to total mercury is 0.77 ug/L. | ||||
Guideline Reference: | National Recommended Water Quality Criteria. United States Environmental Protection Agency. Office of Water. Current as of 08/03/2016. | ||||
Spatial Representation: | The samples were collected at 1 monitoring site: SMC01278_SGRRMP (SGLR01278_SGRRMP). | ||||
Temporal Representation: | The samples were collected between the dates of 2016-06-23 and 2017-07-19 | ||||
Environmental Conditions: | |||||
QAPP Information: | Aquatic Bioassay & Consulting Laboratories. 2019. San Gabriel River Regional Monitoring Program. | ||||
QAPP Information Reference(s): | San Gabriel River Regional Monitoring Program | ||||
|
|||||
LOE ID: | 298131 | ||||
Pollutant: | Mercury | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 2 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed LA County MS4 data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 2 samples exceeded the water quality threshold for Mercury. | ||||
Data Reference: | WQ data from the MS4 database assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan for the Los Angeles Region states that: Surface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | National Recommended Water Quality Criteria Continuous Concentration (4-day average concentrations) for freshwater aquatic organisms exposure to total mercury is 0.77 ug/L. | ||||
Guideline Reference: | National Recommended Water Quality Criteria. United States Environmental Protection Agency. Office of Water. Current as of 08/03/2016. | ||||
Spatial Representation: | The samples were collected at 1 monitoring site: LSGR_S13 (Coyote Creek @ Spring St. mass emission station). | ||||
Temporal Representation: | The samples were collected between the dates of 2016-07-28 and 2016-11-21 | ||||
Environmental Conditions: | |||||
QAPP Information: | Municipal Separate Storm Sewer System (MS4) | ||||
QAPP Information Reference(s): | Municipal Separate Storm Sewer System (MS4) | ||||
|
|||||
LOE ID: | 298128 | ||||
Pollutant: | Mercury | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 11 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed LA County MS4 data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 11 samples exceeded the water quality threshold for Mercury. | ||||
Data Reference: | WQ data from the MS4 database assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan for the Los Angeles Region states that: Surface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | National Recommended Water Quality Criteria Continuous Concentration (4-day average concentrations) for freshwater aquatic organisms exposure to total mercury is 0.77 ug/L. | ||||
Guideline Reference: | National Recommended Water Quality Criteria. United States Environmental Protection Agency. Office of Water. Current as of 08/03/2016. | ||||
Spatial Representation: | The samples were collected at 1 monitoring site: LSGR-S13 (Coyote Creek at Spring St). | ||||
Temporal Representation: | The samples were collected between the dates of 2015-08-19 and 2019-11-21 | ||||
Environmental Conditions: | |||||
QAPP Information: | Municipal Separate Storm Sewer System (MS4) | ||||
QAPP Information Reference(s): | Municipal Separate Storm Sewer System (MS4) | ||||
|
|||||
LOE ID: | 298222 | ||||
Pollutant: | Mercury | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Not Recorded | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 37 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed eSMR_Long Beach WRP data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 37 samples exceeded the water quality threshold for Mercury. | ||||
Data Reference: | WQ data from the California Integrated Water Quality System (CIWQS) assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan for the Los Angeles Region states that: Surface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | National Recommended Water Quality Criteria Continuous Concentration (4-day average concentrations) for freshwater aquatic organisms exposure to total mercury is 0.77 ug/L. | ||||
Guideline Reference: | National Recommended Water Quality Criteria. United States Environmental Protection Agency. Office of Water. Current as of 08/03/2016. | ||||
Spatial Representation: | The samples were collected at 1 monitoring site: 658086 (RSW-002). | ||||
Temporal Representation: | The samples were collected between the dates of 2011-07-11 and 2020-07-09 | ||||
Environmental Conditions: | |||||
QAPP Information: | Los Angeles County Sanitation Districts. 2020. Los Angeles County Sanitation Districts Receiving Water Monitoring Program. | ||||
QAPP Information Reference(s): | Los Angeles County Sanitation Districts Receiving Water Monitoring Program | ||||
|
|||||
LOE ID: | 298223 | ||||
Pollutant: | Mercury | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 31 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed eSMR_Long Beach WRP data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 31 samples exceeded the water quality threshold for Mercury. | ||||
Data Reference: | WQ data from the California Integrated Water Quality System (CIWQS) assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan for the Los Angeles Region states that: Surface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | National Recommended Water Quality Criteria Continuous Concentration (4-day average concentrations) for freshwater aquatic organisms exposure to total mercury is 0.77 ug/L. | ||||
Guideline Reference: | National Recommended Water Quality Criteria. United States Environmental Protection Agency. Office of Water. Current as of 08/03/2016. | ||||
Spatial Representation: | The samples were collected at 1 monitoring site: 658086 (RSW-002). | ||||
Temporal Representation: | The samples were collected between the dates of 2011-07-11 and 2019-01-02 | ||||
Environmental Conditions: | |||||
QAPP Information: | Los Angeles County Sanitation Districts. 2020. Los Angeles County Sanitation Districts Receiving Water Monitoring Program. | ||||
QAPP Information Reference(s): | Los Angeles County Sanitation Districts Receiving Water Monitoring Program | ||||
|
|||||
LOE ID: | 298125 | ||||
Pollutant: | Mercury | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 2 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed LA County MS4 data for Pacific Ocean Shoreline, Aliso HSA, at Blue Lagoon to determine beneficial use support and results are as follows: 0 of 2 samples exceeded the water quality threshold for Mercury. | ||||
Data Reference: | WQ data from the MS4 database assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan for the Los Angeles Region states that: Surface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | National Recommended Water Quality Criteria Continuous Concentration (4-day average concentrations) for freshwater aquatic organisms exposure to total mercury is 0.77 ug/L. | ||||
Guideline Reference: | National Recommended Water Quality Criteria. United States Environmental Protection Agency. Office of Water. Current as of 08/03/2016. | ||||
Spatial Representation: | The samples were collected at 1 monitoring site: S13 (Coyote Creek @ Spring St. mass emission station). | ||||
Temporal Representation: | The samples were collected between the dates of 2015-08-19 and 2015-12-13 | ||||
Environmental Conditions: | |||||
QAPP Information: | Municipal Separate Storm Sewer System (MS4) | ||||
QAPP Information Reference(s): | Municipal Separate Storm Sewer System (MS4) | ||||
|
|||||
LOE ID: | 298126 | ||||
Pollutant: | Mercury | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 7 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed LA County MS4 data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 7 samples exceeded the water quality threshold for Mercury. | ||||
Data Reference: | WQ data from the MS4 database assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan for the Los Angeles Region states that: Surface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | National Recommended Water Quality Criteria Continuous Concentration (4-day average concentrations) for freshwater aquatic organisms exposure to total mercury is 0.77 ug/L. | ||||
Guideline Reference: | National Recommended Water Quality Criteria. United States Environmental Protection Agency. Office of Water. Current as of 08/03/2016. | ||||
Spatial Representation: | The samples were collected at 1 monitoring site: LSGR-S13 (Coyote Creek at Spring St). | ||||
Temporal Representation: | The samples were collected between the dates of 2015-08-19 and 2019-11-21 | ||||
Environmental Conditions: | |||||
QAPP Information: | Municipal Separate Storm Sewer System (MS4) | ||||
QAPP Information Reference(s): | Municipal Separate Storm Sewer System (MS4) | ||||
|
|||||
LOE ID: | 83859 | ||||
Pollutant: | Mercury | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 19 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) | ||||
Data Used to Assess Water Quality: | None of the 19 samples exceeded the evaluation guideline for mercury. | ||||
Data Reference: | Data for Various Waterbodies in Region 8 and Region 9, 2006-2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Surface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | National Recommended Water Quality Criteria Continuous Concentrations (4-day average concentrations) for freshwater aquatic organisms exposure to elemental mercury is 0.77 ug/L. | ||||
Guideline Reference: | National Recommended Water Quality Criteria. United States Environmental Protection Agency. Office of Water. Office of Science and Technology | ||||
Spatial Representation: | Samples were collected from station CCBA01, Coyote Creek at Valley View Drive. | ||||
Temporal Representation: | Samples were intermittently collected from September 2006 until January 2009. | ||||
Environmental Conditions: | Approximately 77% of the samples were collected after storm events. | ||||
QAPP Information: | Samples were collected and analyzed in accordance with the signed and certified, Quality Assurance Management Plan for the Orange County Stormwater Program. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 83860 | ||||
Pollutant: | Mercury | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total Dissolved | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 82 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) | ||||
Data Used to Assess Water Quality: | None of the 82 samples exceeded the criteria of 0.77 ug/L. | ||||
Data Reference: | Data for Various Pollutants in Various Water Bodies in Sanitation Districts of Los Angeles County, 2005-2010. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Surface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | National Recommended Water Quality Criteria Continuous Concentrations (4-day average concentrations) for freshwater aquatic organisms exposure to elemental mercury is 0.77 ug/L. | ||||
Guideline Reference: | National Recommended Water Quality Criteria. United States Environmental Protection Agency. Office of Water. Office of Science and Technology | ||||
Spatial Representation: | Samples were collected from Coyote Creek from location LB also called SG at three sublocations: RA, RA1, and RA1B. | ||||
Temporal Representation: | Samples were collected monthly from June 2006 through May of 2010. | ||||
Environmental Conditions: | |||||
QAPP Information: | The Biology Department of the San Jose Creek Water Quality Laboratory is responsible for collecting samples from receiving water stations along the San Gabriel River, Coyote Creek, San Jose Creek, Santa Clara River, and the Rio Hondo River. Data is collected for the Los Angeles Sanitation District NPDES permits. Some standard operating procedures for sampling were submitted, however no QA Project Plan was. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 298297 | ||||
Pollutant: | Mercury | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 2 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed San Gabriel River Regional Monitoring Program data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 2 samples exceeded the water quality threshold for Mercury. | ||||
Data Reference: | Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan for the Los Angeles Region states that: Surface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | National Recommended Water Quality Criteria Continuous Concentration (4-day average concentrations) for freshwater aquatic organisms exposure to total mercury is 0.77 ug/L. | ||||
Guideline Reference: | National Recommended Water Quality Criteria. United States Environmental Protection Agency. Office of Water. Current as of 08/03/2016. | ||||
Spatial Representation: | The samples were collected at 1 monitoring site: SMC01278_SGRRMP (SGLR01278_SGRRMP). | ||||
Temporal Representation: | The samples were collected between the dates of 2016-06-23 and 2017-07-19 | ||||
Environmental Conditions: | |||||
QAPP Information: | Aquatic Bioassay & Consulting Laboratories. 2019. San Gabriel River Regional Monitoring Program. | ||||
QAPP Information Reference(s): | San Gabriel River Regional Monitoring Program | ||||
|
|||||
LOE ID: | 298123 | ||||
Pollutant: | Mercury | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 2 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed LA County MS4 data for Pacific Ocean Shoreline, Aliso HSA, at Blue Lagoon to determine beneficial use support and results are as follows: 0 of 2 samples exceeded the water quality threshold for Mercury. | ||||
Data Reference: | WQ data from the MS4 database assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan for the Los Angeles Region states that: Surface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | National Recommended Water Quality Criteria Continuous Concentration (4-day average concentrations) for freshwater aquatic organisms exposure to total mercury is 0.77 ug/L. | ||||
Guideline Reference: | National Recommended Water Quality Criteria. United States Environmental Protection Agency. Office of Water. Current as of 08/03/2016. | ||||
Spatial Representation: | The samples were collected at 1 monitoring site: S13 (Coyote Creek @ Spring St. mass emission station). | ||||
Temporal Representation: | The samples were collected between the dates of 2015-08-19 and 2015-12-13 | ||||
Environmental Conditions: | |||||
QAPP Information: | Municipal Separate Storm Sewer System (MS4) | ||||
QAPP Information Reference(s): | Municipal Separate Storm Sewer System (MS4) | ||||
|
|||||
LOE ID: | 298225 | ||||
Pollutant: | Mercury | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 31 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed eSMR_Long Beach WRP data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 31 samples exceeded the water quality threshold for Mercury. | ||||
Data Reference: | WQ data from the California Integrated Water Quality System (CIWQS) assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan for the Los Angeles Region states that: Surface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | National Recommended Water Quality Criteria Continuous Concentration (4-day average concentrations) for freshwater aquatic organisms exposure to total mercury is 0.77 ug/L. | ||||
Guideline Reference: | National Recommended Water Quality Criteria. United States Environmental Protection Agency. Office of Water. Current as of 08/03/2016. | ||||
Spatial Representation: | The samples were collected at 1 monitoring site: 658085 (RSW-001). | ||||
Temporal Representation: | The samples were collected between the dates of 2011-07-11 and 2019-01-02 | ||||
Environmental Conditions: | |||||
QAPP Information: | Los Angeles County Sanitation Districts. 2020. Los Angeles County Sanitation Districts Receiving Water Monitoring Program. | ||||
QAPP Information Reference(s): | Los Angeles County Sanitation Districts Receiving Water Monitoring Program | ||||
|
|||||
LOE ID: | 298124 | ||||
Pollutant: | Mercury | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 2 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed LA County MS4 data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 2 samples exceeded the water quality threshold for Mercury. | ||||
Data Reference: | WQ data from the MS4 database assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan for the Los Angeles Region states that: Surface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | National Recommended Water Quality Criteria Continuous Concentration (4-day average concentrations) for freshwater aquatic organisms exposure to total mercury is 0.77 ug/L. | ||||
Guideline Reference: | National Recommended Water Quality Criteria. United States Environmental Protection Agency. Office of Water. Current as of 08/03/2016. | ||||
Spatial Representation: | The samples were collected at 1 monitoring site: LSGR_S13 (Coyote Creek @ Spring St. mass emission station). | ||||
Temporal Representation: | The samples were collected between the dates of 2016-07-28 and 2016-11-21 | ||||
Environmental Conditions: | |||||
QAPP Information: | Municipal Separate Storm Sewer System (MS4) | ||||
QAPP Information Reference(s): | Municipal Separate Storm Sewer System (MS4) | ||||
DECISION ID |
132558 |
Region 4 |
Coyote Creek |
||
Pollutant: | Methoxychlor |
Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | New Decision |
Revision Status | Revised |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the CWA section 303(d) List in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. 0 of 54 samples exceeded the CRITERIA and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because applicable water quality standards are not being exceeded. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 298220 | ||||
Pollutant: | Methoxychlor | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Not Recorded | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 27 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed eSMR_Long Beach WRP data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 27 samples exceeded the water quality threshold for Methoxychlor. | ||||
Data Reference: | WQ data from the California Integrated Water Quality System (CIWQS) assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan for the Los Angeles Region states that: Surface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | The USEPA national ambient water quality criterion for freshwater aquatic life Criterion Continuous Concentration (CCC) expressed as a 4-day average for methoxychlor is 0.03 ug/L. | ||||
Guideline Reference: | National Recommended Water Quality Criteria. United States Environmental Protection Agency. Office of Water. Current as of 08/03/2016. | ||||
Spatial Representation: | The samples were collected at 1 monitoring site: 658085 (RSW-001). | ||||
Temporal Representation: | The samples were collected between the dates of 2011-07-11 and 2020-07-09 | ||||
Environmental Conditions: | |||||
QAPP Information: | Los Angeles County Sanitation Districts. 2020. Los Angeles County Sanitation Districts Receiving Water Monitoring Program. | ||||
QAPP Information Reference(s): | Los Angeles County Sanitation Districts Receiving Water Monitoring Program | ||||
|
|||||
LOE ID: | 298219 | ||||
Pollutant: | Methoxychlor | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Not Recorded | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 27 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed eSMR_Long Beach WRP data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 27 samples exceeded the water quality threshold for Methoxychlor. | ||||
Data Reference: | WQ data from the California Integrated Water Quality System (CIWQS) assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan for the Los Angeles Region states that: Surface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | The USEPA national ambient water quality criterion for freshwater aquatic life Criterion Continuous Concentration (CCC) expressed as a 4-day average for methoxychlor is 0.03 ug/L. | ||||
Guideline Reference: | National Recommended Water Quality Criteria. United States Environmental Protection Agency. Office of Water. Current as of 08/03/2016. | ||||
Spatial Representation: | The samples were collected at 1 monitoring site: 658086 (RSW-002). | ||||
Temporal Representation: | The samples were collected between the dates of 2011-07-11 and 2020-07-09 | ||||
Environmental Conditions: | |||||
QAPP Information: | Los Angeles County Sanitation Districts. 2020. Los Angeles County Sanitation Districts Receiving Water Monitoring Program. | ||||
QAPP Information Reference(s): | Los Angeles County Sanitation Districts Receiving Water Monitoring Program | ||||
DECISION ID |
132559 |
Region 4 |
Coyote Creek |
||
Pollutant: | Naphthalene |
Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | New Decision |
Revision Status | Revised |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the CWA section 303(d) List in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. 0 of 38 samples exceeded the criteria and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because applicable water quality standards are not being exceeded. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 298216 | ||||
Pollutant: | Naphthalene | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Not Recorded | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 19 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed eSMR_Long Beach WRP data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 19 samples exceeded the water quality threshold for Naphthalene. | ||||
Data Reference: | WQ data from the California Integrated Water Quality System (CIWQS) assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan for the Los Angeles Region states that: All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | The USEPA recommended naphthalene criterion for the protection of freshwater aquatic life is 620 ug/l. (EPA 440/5-80-059) | ||||
Guideline Reference: | Ambient Water Quality Criteria for Naphthalene | ||||
Spatial Representation: | The samples were collected at 1 monitoring site: 658086 (RSW-002). | ||||
Temporal Representation: | The samples were collected between the dates of 2011-07-11 and 2020-07-09 | ||||
Environmental Conditions: | |||||
QAPP Information: | Los Angeles County Sanitation Districts. 2020. Los Angeles County Sanitation Districts Receiving Water Monitoring Program. | ||||
QAPP Information Reference(s): | Los Angeles County Sanitation Districts Receiving Water Monitoring Program | ||||
|
|||||
LOE ID: | 298217 | ||||
Pollutant: | Naphthalene | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Not Recorded | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 19 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed eSMR_Long Beach WRP data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 19 samples exceeded the water quality threshold for Naphthalene. | ||||
Data Reference: | WQ data from the California Integrated Water Quality System (CIWQS) assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan for the Los Angeles Region states that: All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | The USEPA recommended naphthalene criterion for the protection of freshwater aquatic life is 620 ug/l. (EPA 440/5-80-059) | ||||
Guideline Reference: | Ambient Water Quality Criteria for Naphthalene | ||||
Spatial Representation: | The samples were collected at 1 monitoring site: 658085 (RSW-001). | ||||
Temporal Representation: | The samples were collected between the dates of 2011-07-11 and 2020-07-09 | ||||
Environmental Conditions: | |||||
QAPP Information: | Los Angeles County Sanitation Districts. 2020. Los Angeles County Sanitation Districts Receiving Water Monitoring Program. | ||||
QAPP Information Reference(s): | Los Angeles County Sanitation Districts Receiving Water Monitoring Program | ||||
DECISION ID |
132560 |
Region 4 |
Coyote Creek |
||
Pollutant: | Nickel |
Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | Do Not List on 303(d) list (TMDL required list)(2018) |
Revision Status | Revised |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status. 9 lines of evidence are available in the administrative record to assess this pollutant. 0 of 112 samples exceeded the CRITERIA. 0 of 81 samples exceeded the CRITERIA. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the CWA section 303(d) List in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. 0 of 112 and 0 of 81 samples exceeded the CRITERIA and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because applicable water quality standards are not being exceeded. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 83862 | ||||
Pollutant: | Nickel | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total Dissolved | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 81 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) | ||||
Data Used to Assess Water Quality: | None of the 81 samples exceeded the hardness adjusted criteria. | ||||
Data Reference: | Data for Various Pollutants in Various Water Bodies in Sanitation Districts of Los Angeles County, 2005-2010. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Surface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | California Toxics Rule (CTR) lists criterion continuous concentrations (4-day average) to protect aquatic life in freshwater. The criterion in freshwater is hardness dependent for each sample and varies based on the ambient hardness during sampling. Section (b)(1) in CTR contains the hardness dependent formula for the metals criterion. If no hardness data were available, a value of 100 mg/L was used. | ||||
Guideline Reference: | Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition | ||||
Spatial Representation: | Samples were collected from Coyote Creek from location LB also called SG at three sublocations: RA, RA1, and RA1B. | ||||
Temporal Representation: | Samples were collected monthly from June 2006 through May of 2010. | ||||
Environmental Conditions: | |||||
QAPP Information: | The Biology Department of the San Jose Creek Water Quality Laboratory is responsible for collecting samples from receiving water stations along the San Gabriel River, Coyote Creek, San Jose Creek, Santa Clara River, and the Rio Hondo River. Data is collected for the Los Angeles Sanitation District NPDES permits. Some standard operating procedures for sampling were submitted, however no QA Project Plan was. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 83861 | ||||
Pollutant: | Nickel | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 26 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) | ||||
Data Used to Assess Water Quality: | None of the 26 samples exceeded the hardness adjusted CTR value for nickel. | ||||
Data Reference: | Data for Various Waterbodies in Region 8 and Region 9, 2006-2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Surface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | California Toxics Rule (CTR) lists criterion continuous concentrations (4-day average) to protect aquatic life in freshwater. The disolved criterion in freshwater is hardness dependent for each sample and varies based on the ambient hardness during sampling. Section (b)(1) in CTR contains the hardness dependent formula for the metals criterion. If no hardness data were available, a value of 100 mg/L was used. | ||||
Guideline Reference: | Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition | ||||
Spatial Representation: | Samples were collected from station CCBA01, Coyote Creek at Valley View Drive. | ||||
Temporal Representation: | Samples were intermittently collected from September 2006 until January 2009. | ||||
Environmental Conditions: | Approximately 77% of the samples were collected after storm events. | ||||
QAPP Information: | Samples were collected and analyzed in accordance with the signed and certified, Quality Assurance Management Plan for the Orange County Stormwater Program. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 298135 | ||||
Pollutant: | Nickel | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed LA County MS4 data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Nickel. | ||||
Data Reference: | WQ data from the MS4 database assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The dissolved nickel criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is hardness dependent. The criterion when calculated using a default hardness of 100 mg/L is 52 ug/L (California Toxics Rule, 2000). | ||||
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: | The samples were collected at 1 monitoring site: LSGR_S13 (Coyote Creek @ Spring St. mass emission station). | ||||
Temporal Representation: | The samples were collected between the dates of 2016-07-28 and 2016-07-28 | ||||
Environmental Conditions: | |||||
QAPP Information: | Municipal Separate Storm Sewer System (MS4) | ||||
QAPP Information Reference(s): | Municipal Separate Storm Sewer System (MS4) | ||||
|
|||||
LOE ID: | 298300 | ||||
Pollutant: | Nickel | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 2 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed San Gabriel River Regional Monitoring Program data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 2 samples exceeded the water quality threshold for Nickel. | ||||
Data Reference: | Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The dissolved nickel criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is hardness dependent. The criterion when calculated using a default hardness of 100 mg/L is 52 ug/L (California Toxics Rule, 2000). | ||||
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: | The samples were collected at 1 monitoring site: SMC01278_SGRRMP (SGLR01278_SGRRMP). | ||||
Temporal Representation: | The samples were collected between the dates of 2016-06-23 and 2017-07-19 | ||||
Environmental Conditions: | |||||
QAPP Information: | Aquatic Bioassay & Consulting Laboratories. 2019. San Gabriel River Regional Monitoring Program. | ||||
QAPP Information Reference(s): | San Gabriel River Regional Monitoring Program | ||||
|
|||||
LOE ID: | 298134 | ||||
Pollutant: | Nickel | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 2 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed LA County MS4 data for Pacific Ocean Shoreline, Aliso HSA, at Blue Lagoon to determine beneficial use support and results are as follows: 0 of 2 samples exceeded the water quality threshold for Nickel. | ||||
Data Reference: | WQ data from the MS4 database assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The dissolved nickel criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is hardness dependent. The criterion when calculated using a default hardness of 100 mg/L is 52 ug/L (California Toxics Rule, 2000). | ||||
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: | The samples were collected at 1 monitoring site: S13 (Coyote Creek @ Spring St. mass emission station). | ||||
Temporal Representation: | The samples were collected between the dates of 2015-07-29 and 2015-12-14 | ||||
Environmental Conditions: | |||||
QAPP Information: | Municipal Separate Storm Sewer System (MS4) | ||||
QAPP Information Reference(s): | Municipal Separate Storm Sewer System (MS4) | ||||
|
|||||
LOE ID: | 298299 | ||||
Pollutant: | Nickel | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed SWAMP RWB8 Monitoring data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Nickel. | ||||
Data Reference: | Field, Habitat, Toxicity, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | The dissolved nickel criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is hardness dependent. The criterion when calculated using a default hardness of 100 mg/L is 52 ug/L (California Toxics Rule, 2000). | ||||
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: | The samples were collected at 1 monitoring site: 845RB8633 (Coyote Creek Random Olsen Site 633). | ||||
Temporal Representation: | The samples were collected between the dates of 2013-07-08 and 2013-07-08 | ||||
Environmental Conditions: | |||||
QAPP Information: | SWRCB. 2018. This is a placeholder reference for data that 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. | ||||
|
|||||
LOE ID: | 298215 | ||||
Pollutant: | Nickel | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 37 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed eSMR_Long Beach WRP data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 37 samples exceeded the water quality threshold for Nickel. | ||||
Data Reference: | WQ data from the California Integrated Water Quality System (CIWQS) assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The dissolved nickel criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is hardness dependent. The criterion when calculated using a default hardness of 100 mg/L is 52 ug/L (California Toxics Rule, 2000). | ||||
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: | The samples were collected at 1 monitoring site: 658085 (RSW-001). | ||||
Temporal Representation: | The samples were collected between the dates of 2011-07-11 and 2020-07-09 | ||||
Environmental Conditions: | |||||
QAPP Information: | Los Angeles County Sanitation Districts. 2020. Los Angeles County Sanitation Districts Receiving Water Monitoring Program. | ||||
QAPP Information Reference(s): | Los Angeles County Sanitation Districts Receiving Water Monitoring Program | ||||
|
|||||
LOE ID: | 298133 | ||||
Pollutant: | Nickel | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 6 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed LA County MS4 data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 6 samples exceeded the water quality threshold for Nickel. | ||||
Data Reference: | WQ data from the MS4 database assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The dissolved nickel criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is hardness dependent. The criterion when calculated using a default hardness of 100 mg/L is 52 ug/L (California Toxics Rule, 2000). | ||||
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: | The samples were collected at 1 monitoring site: LSGR-S13 (Coyote Creek at Spring St). | ||||
Temporal Representation: | The samples were collected between the dates of 2015-07-29 and 2019-09-20 | ||||
Environmental Conditions: | |||||
QAPP Information: | Municipal Separate Storm Sewer System (MS4) | ||||
QAPP Information Reference(s): | Municipal Separate Storm Sewer System (MS4) | ||||
|
|||||
LOE ID: | 298221 | ||||
Pollutant: | Nickel | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 37 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed eSMR_Long Beach WRP data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 37 samples exceeded the water quality threshold for Nickel. | ||||
Data Reference: | WQ data from the California Integrated Water Quality System (CIWQS) assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The dissolved nickel criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is hardness dependent. The criterion when calculated using a default hardness of 100 mg/L is 52 ug/L (California Toxics Rule, 2000). | ||||
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: | The samples were collected at 1 monitoring site: 658086 (RSW-002). | ||||
Temporal Representation: | The samples were collected between the dates of 2011-07-11 and 2020-07-09 | ||||
Environmental Conditions: | |||||
QAPP Information: | Los Angeles County Sanitation Districts. 2020. Los Angeles County Sanitation Districts Receiving Water Monitoring Program. | ||||
QAPP Information Reference(s): | Los Angeles County Sanitation Districts Receiving Water Monitoring Program | ||||
DECISION ID |
149520 |
Region 4 |
Coyote Creek |
||
Pollutant: | Nitrogen, Nitrate |
Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | New Decision |
Revision Status | Revised |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the CWA section 303(d) List in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. 0 of 224 and 0 of 4 samples exceeded the OBJECTIVE and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because applicable water quality standards are not being exceeded. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 302587 | ||||
Pollutant: | Nitrogen, Nitrate | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Not Recorded | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 112 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed eSMR_Long Beach WRP data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 112 samples exceeded the water quality threshold for Nitrate as N. | ||||
Data Reference: | WQ data from the California Integrated Water Quality System (CIWQS) assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan for the Los Angeles Region (page 3-34) states that: Waters shall not exceed 10 mg/L as nitrate-nitrogen (NO3-N). | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | The samples were collected at 1 monitoring site: 658085 (RSW-001). | ||||
Temporal Representation: | The samples were collected between the dates of 2011-06-01 and 2020-09-16 | ||||
Environmental Conditions: | |||||
QAPP Information: | Los Angeles County Sanitation Districts. 2020. Los Angeles County Sanitation Districts Receiving Water Monitoring Program. | ||||
QAPP Information Reference(s): | Los Angeles County Sanitation Districts Receiving Water Monitoring Program | ||||
|
|||||
LOE ID: | 302487 | ||||
Pollutant: | Nitrogen, Nitrate | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed LA County MS4 data for Pacific Ocean Shoreline, Aliso HSA, at Blue Lagoon to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Nitrate as N. | ||||
Data Reference: | WQ data from the MS4 database assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan for the Los Angeles Region (page 3-34) states that: Waters shall not exceed 10 mg/L as nitrate-nitrogen (NO3-N). | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | The samples were collected at 1 monitoring site: S13 (Coyote Creek @ Spring St. mass emission station). | ||||
Temporal Representation: | The samples were collected between the dates of 2015-12-14 and 2015-12-14 | ||||
Environmental Conditions: | |||||
QAPP Information: | Municipal Separate Storm Sewer System (MS4) | ||||
QAPP Information Reference(s): | Municipal Separate Storm Sewer System (MS4) | ||||
|
|||||
LOE ID: | 302592 | ||||
Pollutant: | Nitrogen, Nitrate | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Not Recorded | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 112 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed eSMR_Long Beach WRP data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 112 samples exceeded the water quality threshold for Nitrate as N. | ||||
Data Reference: | WQ data from the California Integrated Water Quality System (CIWQS) assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan for the Los Angeles Region (page 3-34) states that: Waters shall not exceed 10 mg/L as nitrate-nitrogen (NO3-N). | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | The samples were collected at 1 monitoring site: 658086 (RSW-002). | ||||
Temporal Representation: | The samples were collected between the dates of 2011-06-01 and 2020-09-16 | ||||
Environmental Conditions: | |||||
QAPP Information: | Los Angeles County Sanitation Districts. 2020. Los Angeles County Sanitation Districts Receiving Water Monitoring Program. | ||||
QAPP Information Reference(s): | Los Angeles County Sanitation Districts Receiving Water Monitoring Program | ||||
|
|||||
LOE ID: | 302536 | ||||
Pollutant: | Nitrogen, Nitrate | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed LA County MS4 data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Nitrate as N. | ||||
Data Reference: | WQ data from the MS4 database assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan for the Los Angeles Region (page 3-34) states that: Waters shall not exceed 10 mg/L as nitrate-nitrogen (NO3-N). | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | The samples were collected at 1 monitoring site: LSGR-S13 (Coyote Creek at Spring St). | ||||
Temporal Representation: | The samples were collected between the dates of 2015-12-14 and 2015-12-14 | ||||
Environmental Conditions: | |||||
QAPP Information: | Municipal Separate Storm Sewer System (MS4) | ||||
QAPP Information Reference(s): | Municipal Separate Storm Sewer System (MS4) | ||||
|
|||||
LOE ID: | 302216 | ||||
Pollutant: | Nitrogen, Nitrate | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 2 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed San Gabriel River Regional Monitoring Program data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 2 samples exceeded the water quality threshold for Nitrate as N. | ||||
Data Reference: | Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan for the Los Angeles Region (page 3-34) states that: Waters shall not exceed 10 mg/L as nitrate-nitrogen (NO3-N). | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | The samples were collected at 1 monitoring site: SMC01278_SGRRMP (SGLR01278_SGRRMP). | ||||
Temporal Representation: | The samples were collected between the dates of 2016-06-23 and 2017-07-19 | ||||
Environmental Conditions: | |||||
QAPP Information: | Aquatic Bioassay & Consulting Laboratories. 2019. San Gabriel River Regional Monitoring Program. | ||||
QAPP Information Reference(s): | San Gabriel River Regional Monitoring Program | ||||
DECISION ID |
132562 |
Region 4 |
Coyote Creek |
||
Pollutant: | Oil and Grease |
Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | New Decision |
Revision Status | Revised |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded. |
|
|||||
LOE ID: | 298141 | ||||
Pollutant: | Oil and Grease | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 0 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed LA County MS4 data for Coyote Creek to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for OilandGrease; HEM. Although a total of 2 samples were collected, 2 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5. | ||||
Data Reference: | WQ data from the MS4 database assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan for the Los Angeles Region states that: Waters shall not contain oils, greases, waxes or other materials in concentrations that result in a visible film or coating on the surface of the water or on objects in the water, that cause nuisance, or that otherwise adversely affect beneficial uses. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | According to the USEPA Quality Criteria for Water (Gold Book), concentrations of oil at 0.001 mg/L can harm aquatic life. (USEPA, 1986) | ||||
Guideline Reference: | Quality Criteria for Water 1986. United States Environmental Protection Agency. Office of Water. Regulations and Standards. Washington D.C. EPA 440/5-86-001. | ||||
Spatial Representation: | The samples were collected at 1 monitoring site: LSGR_S13 (Coyote Creek @ Spring St. mass emission station). | ||||
Temporal Representation: | Data for this waterbody were collected over the date range 2016-11-21 to 2016-12-16 | ||||
Environmental Conditions: | |||||
QAPP Information: | Municipal Separate Storm Sewer System (MS4) | ||||
QAPP Information Reference(s): | Municipal Separate Storm Sewer System (MS4) | ||||
|
|||||
LOE ID: | 298137 | ||||
Pollutant: | Oil and Grease | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 0 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed LA County MS4 data for Coyote Creek to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for OilandGrease; HEM. Although a total of 5 samples were collected, 5 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5. | ||||
Data Reference: | WQ data from the MS4 database assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan for the Los Angeles Region states that: Waters shall not contain oils, greases, waxes or other materials in concentrations that result in a visible film or coating on the surface of the water or on objects in the water, that cause nuisance, or that otherwise adversely affect beneficial uses. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | According to the USEPA Quality Criteria for Water (Gold Book), concentrations of oil at 0.001 mg/L can harm aquatic life. (USEPA, 1986) | ||||
Guideline Reference: | Quality Criteria for Water 1986. United States Environmental Protection Agency. Office of Water. Regulations and Standards. Washington D.C. EPA 440/5-86-001. | ||||
Spatial Representation: | The samples were collected at 1 monitoring site: LSGR-S13 (Coyote Creek at Spring St). | ||||
Temporal Representation: | Data for this waterbody were collected over the date range 2015-07-28 to 2017-09-20 | ||||
Environmental Conditions: | |||||
QAPP Information: | Municipal Separate Storm Sewer System (MS4) | ||||
QAPP Information Reference(s): | Municipal Separate Storm Sewer System (MS4) | ||||
|
|||||
LOE ID: | 298142 | ||||
Pollutant: | Oil and Grease | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 0 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed LA County MS4 data for Pacific Ocean Shoreline, Aliso HSA, at Blue Lagoon to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for OilandGrease; HEM. Although a total of 2 samples were collected, 2 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5. | ||||
Data Reference: | WQ data from the MS4 database assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan for the Los Angeles Region states that: Waters shall not contain oils, greases, waxes or other materials in concentrations that result in a visible film or coating on the surface of the water or on objects in the water, that cause nuisance, or that otherwise adversely affect beneficial uses. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | According to the USEPA Quality Criteria for Water (Gold Book), concentrations of oil at 0.001 mg/L can harm aquatic life. (USEPA, 1986) | ||||
Guideline Reference: | Quality Criteria for Water 1986. United States Environmental Protection Agency. Office of Water. Regulations and Standards. Washington D.C. EPA 440/5-86-001. | ||||
Spatial Representation: | The samples were collected at 1 monitoring site: S13 (Coyote Creek @ Spring St. mass emission station). | ||||
Temporal Representation: | Data for this waterbody were collected over the date range 2015-07-28 to 2015-12-13 | ||||
Environmental Conditions: | |||||
QAPP Information: | Municipal Separate Storm Sewer System (MS4) | ||||
QAPP Information Reference(s): | Municipal Separate Storm Sewer System (MS4) | ||||
DECISION ID |
132563 |
Region 4 |
Coyote Creek |
||
Pollutant: | Organophosphate Pesticides |
Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | New Decision |
Revision Status | Revised |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the CWA section 303(d) List in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. 0 of 76 samples exceeded the guideline and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because applicable water quality standards are not being exceeded. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 298229 | ||||
Pollutant: | Organophosphate Pesticides | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Not Recorded | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 38 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed eSMR_Long Beach WRP data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 38 samples exceeded the water quality threshold for Organophosphorus Pesticides. | ||||
Data Reference: | WQ data from the California Integrated Water Quality System (CIWQS) assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | The evaluation guideline for the protection of aquatic life from the additive effects of the organophosphate pesticides chlorpyrifos and diazinon is one toxic unit equivalent. A toxic unit equivalent is equal to the sum of chlorpyrifos and diazinon from a single sample, each having their reported concentration divided their respective evaluation guideline prior to being summed. If this results in a value greater than one, the sample is considered to be in exceedance of the water quality standard. (Bailey et al., 1997). | ||||
Guideline Reference: | Joint acute toxicity of Diazinon and Chlorpyrifos to Ceriodaphnia dubia. | ||||
Spatial Representation: | The samples were collected at 1 monitoring site: 658085 (RSW-001). | ||||
Temporal Representation: | The samples were collected between the dates of 2011-07-06 and 2020-10-12 | ||||
Environmental Conditions: | |||||
QAPP Information: | Los Angeles County Sanitation Districts. 2020. Los Angeles County Sanitation Districts Receiving Water Monitoring Program. | ||||
QAPP Information Reference(s): | Los Angeles County Sanitation Districts Receiving Water Monitoring Program | ||||
|
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LOE ID: | 298228 | ||||
Pollutant: | Organophosphate Pesticides | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Not Recorded | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 38 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed eSMR_Long Beach WRP data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 38 samples exceeded the water quality threshold for Organophosphorus Pesticides. | ||||
Data Reference: | WQ data from the California Integrated Water Quality System (CIWQS) assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | The evaluation guideline for the protection of aquatic life from the additive effects of the organophosphate pesticides chlorpyrifos and diazinon is one toxic unit equivalent. A toxic unit equivalent is equal to the sum of chlorpyrifos and diazinon from a single sample, each having their reported concentration divided their respective evaluation guideline prior to being summed. If this results in a value greater than one, the sample is considered to be in exceedance of the water quality standard. (Bailey et al., 1997). | ||||
Guideline Reference: | Joint acute toxicity of Diazinon and Chlorpyrifos to Ceriodaphnia dubia. | ||||
Spatial Representation: | The samples were collected at 1 monitoring site: 658086 (RSW-002). | ||||
Temporal Representation: | The samples were collected between the dates of 2011-07-06 and 2020-10-12 | ||||
Environmental Conditions: | |||||
QAPP Information: | Los Angeles County Sanitation Districts. 2020. Los Angeles County Sanitation Districts Receiving Water Monitoring Program. | ||||
QAPP Information Reference(s): | Los Angeles County Sanitation Districts Receiving Water Monitoring Program | ||||
DECISION ID |
151870 |
Region 4 |
Coyote Creek |
||
Pollutant: | Oxygen, Dissolved |
Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | Do Not List on 303(d) list (TMDL required list)(2018) |
Revision Status | Revised |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.2 of the Listing Policy. Under section 3.2 a single line of evidence is necessary to assess listing status. Nine lines of evidence are available in the administrative record to assess this pollutant. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the CWA section 303(d) List. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. 0 of 231, 0 of 224 and 1 of 377 samples exceeded the OBJECTIVE and this does not exceed the allowable frequency listed in Table 3.2 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because applicable water quality standards are not being exceeded. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 307800 | ||||
Pollutant: | Oxygen, Dissolved | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Not Recorded | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 112 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed eSMR_Long Beach WRP data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 112 samples exceeded the water quality threshold for Oxygen, Dissolved. | ||||
Data Reference: | WQ data from the California Integrated Water Quality System (CIWQS) assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan for the Los Angeles Region (page 3-39) states that: The dissolved oxygen content of all surface waters designated as WARM shall not be depressed below 5 mg/L as a result of waste discharges. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | The samples were collected at 1 monitoring site: 658085 (RSW-001). | ||||
Temporal Representation: | The samples were collected between the dates of 2011-06-01 and 2020-09-16 | ||||
Environmental Conditions: | |||||
QAPP Information: | Los Angeles County Sanitation Districts. 2020. Los Angeles County Sanitation Districts Receiving Water Monitoring Program. | ||||
QAPP Information Reference(s): | Los Angeles County Sanitation Districts Receiving Water Monitoring Program | ||||
|
|||||
LOE ID: | 308101 | ||||
Pollutant: | Oxygen, Dissolved | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Not Recorded | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 112 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed eSMR_Long Beach WRP data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 112 samples exceeded the water quality threshold for Oxygen, Dissolved. | ||||
Data Reference: | WQ data from the California Integrated Water Quality System (CIWQS) assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan for the Los Angeles Region (page 3-39) states that: The dissolved oxygen content of all surface waters designated as WARM shall not be depressed below 5 mg/L as a result of waste discharges. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | The samples were collected at 1 monitoring site: 658086 (RSW-002). | ||||
Temporal Representation: | The samples were collected between the dates of 2011-06-01 and 2020-09-16 | ||||
Environmental Conditions: | |||||
QAPP Information: | Los Angeles County Sanitation Districts. 2020. Los Angeles County Sanitation Districts Receiving Water Monitoring Program. | ||||
QAPP Information Reference(s): | Los Angeles County Sanitation Districts Receiving Water Monitoring Program | ||||
|
|||||
LOE ID: | 307902 | ||||
Pollutant: | Oxygen, Dissolved | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 2 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed SWAMP RWB8 Monitoring data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 2 samples exceeded the water quality threshold for Oxygen, Dissolved. | ||||
Data Reference: | Field, Habitat, Toxicity, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan for the Los Angeles Region (page 3-39) states that: The dissolved oxygen content of all surface waters designated as WARM shall not be depressed below 5 mg/L as a result of waste discharges. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | The samples were collected at 1 monitoring site: 845RB8633 (Coyote Creek Random Olsen Site 633). | ||||
Temporal Representation: | The samples were collected between the dates of 2011-07-26 and 2013-07-08 | ||||
Environmental Conditions: | |||||
QAPP Information: | SWRCB. 2018. This is a placeholder reference for data that 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. | ||||
|
|||||
LOE ID: | 307948 | ||||
Pollutant: | Oxygen, Dissolved | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed SWAMP RWB8 Monitoring data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Oxygen, Dissolved. | ||||
Data Reference: | Field, Habitat, Toxicity, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan for the Los Angeles Region (page 3-39) states that: The dissolved oxygen content of all surface waters designated as WARM shall not be depressed below 5 mg/L as a result of waste discharges. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | The samples were collected at 1 monitoring site: 845CTC480 (Coyote Creek Random Olsen Site 480). | ||||
Temporal Representation: | The samples were collected between the dates of 2012-06-19 and 2012-06-19 | ||||
Environmental Conditions: | |||||
QAPP Information: | SWRCB. 2018. This is a placeholder reference for data that 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. | ||||
|
|||||
LOE ID: | 25100 | ||||
Pollutant: | Oxygen, Dissolved | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Aquatic Life Use: | Preservation of Rare & Endangered Species | Wildlife Habitat | ||||
Number of Samples: | 355 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) | ||||
Data Used to Assess Water Quality: | Zero of 22 samples exceeded the Basin Plan water quality objectives for dissolved oxygen in inland surface water bodies. Water quality samples were taken and analyzed for dissolved oxygen in accordance with the Sanitation Districts of Los Angeles County permit monitoring and testing parameters. | ||||
Data Reference: | NPDES receiving water monitoring reports for Long Beach Water Reclamation Plant (NPDES No. CA0054119), Los Coyotes Water Reclamation Plant (NPDES No. CA0053716), Pomona Water Reclamation Plant (NPDES No. CA0053911), San Jose Creek Water Reclamation Plant (NPDES No. CA0053619), and Whittier Narrows Creek Water Reclamation Plant (NPDES No. CA0054011). | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Basin Plan states, "[t]he dissolved oxygen content of all surface waters designated as WARM shall not be depressed below 5 mg/L as a result of waste discharges." | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | The Sanitation Districts of Los Angeles County conducted sampling in Coyote Creek in the following receiving water monitoring stations: receiving water station RA1 located upstream of discharge from Long Beach Water Reclamation Plant and receiving water station RA located downstream of discharge from Long Beach Water Reclamation Plant. | ||||
Temporal Representation: | Grab samples were taken and analyzed on a weekly basis from June 2004 to January 2007 | ||||
Environmental Conditions: | |||||
QAPP Information: | Data was collected in compliance with the sampling and monitoring procedures detailed in Sanitation Districts of Los Angeles County (NPDES No. CA0054119) Monitoring and Reporting Program. | ||||
QAPP Information Reference(s): | Long Beach Water Reclamation Plant Monitoring and Reporting Program for NPDES No. CA0054119 (County Sanitation Districts of Los Angeles County) | ||||
|
|||||
LOE ID: | 25099 | ||||
Pollutant: | Oxygen, Dissolved | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Aquatic Life Use: | Preservation of Rare & Endangered Species | Wildlife Habitat | ||||
Number of Samples: | 22 | ||||
Number of Exceedances: | 1 | ||||
Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) | ||||
Data Used to Assess Water Quality: | One of 22 samples exceeded the Basin Plan water quality objectives for dissolved oxygen in inland surface water bodies. Water quality samples were taken and analyzed for dissolved oxygen in accordance with the Municipal Separate Storm Sewer System (MS4) permit monitoring and testing parameters. | ||||
Data Reference: | Monitoring Report (MS4 Data) - CI 6948 for order no. 01-182 NPDES No. CAS004001 Municipal Storm Water and Urban Runoff Discharges within the County of Los Angeles, and the Incorporated Cities therein, Except the City of Long Beach | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Basin Plan states, "[t]he dissolved oxygen content of all surface waters designated as WARM shall not be depressed below 5 mg/L as a result of waste discharges." | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | The Los Angeles County Department of Public Works conducted sampling at the mass emission monitoring station S13 located below Spring Street in Coyote Creek (Lat: 33.8098610175, Long: -118.077061937). | ||||
Temporal Representation: | Composite samples were taken approximately six per year, four wet-weather events and two dry-weather events, from October 2003 through April 2007. | ||||
Environmental Conditions: | |||||
QAPP Information: | Data was collected in compliance with the sampling and monitoring procedures detailed in County of Los Angeles MS4 Permit (NPDES No. CAS004001) Monitoring and Reporting Program. | ||||
QAPP Information Reference(s): | Monitoring and Reporting Program - CI 6948 for order no. 01-182 NPDES No. CAS004001 Municipal Storm Water and Urban Runoff Discharges within the County of Los Angeles, and the incorporated cities, except the City of Long Beach | ||||
|
|||||
LOE ID: | 307822 | ||||
Pollutant: | Oxygen, Dissolved | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 2 | ||||
Number of Exceedances: | 1 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed San Gabriel River Regional Monitoring Program data for Coyote Creek to determine beneficial use support and results are as follows: 1 of 2 samples exceeded the water quality threshold for Oxygen, Dissolved. | ||||
Data Reference: | Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan for the Los Angeles Region (page 3-39) states that: The dissolved oxygen content of all surface waters designated as WARM shall not be depressed below 5 mg/L as a result of waste discharges. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | The samples were collected at 1 monitoring site: SMC01278_SGRRMP (SGLR01278_SGRRMP). | ||||
Temporal Representation: | The samples were collected between the dates of 2016-06-23 and 2017-07-19 | ||||
Environmental Conditions: | |||||
QAPP Information: | Aquatic Bioassay & Consulting Laboratories. 2019. San Gabriel River Regional Monitoring Program. | ||||
QAPP Information Reference(s): | San Gabriel River Regional Monitoring Program | ||||
|
|||||
LOE ID: | 83864 | ||||
Pollutant: | Oxygen, Dissolved | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 25 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Numeric data generated from 25 averages of Dissolved Oxygen concentrations had no exceedences. | ||||
Data Reference: | Data for Various Waterbodies in Region 8 and Region 9, 2006-2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Dissolved Oxygen Water Quality Objective of all surface waters designated as Warm Fresh Water Aquatic Habitat shall not be depressed below 5 mg/l. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Samples were collected from the CCBA01 station. | ||||
Temporal Representation: | Samples were collected approximately 4 days per semi-annual period from September 2006 to June 2009. | ||||
Environmental Conditions: | |||||
QAPP Information: | NPDES quality assurance. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 83865 | ||||
Pollutant: | Oxygen, Dissolved | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 206 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Numeric data generated from 206 averages of Dissolved Oxygen concentrations had no exceedences. | ||||
Data Reference: | Data for Various Pollutants in Various Water Bodies in Sanitation Districts of Los Angeles County, 2005-2010. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Dissolved Oxygen Water Quality Objective of all surface waters designated as Warm Fresh Water Aquatic Habitat shall not be depressed below 5 mg/l. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Samples were collected from the LB-RA1, LB-RA, and LB-RA1B stations. | ||||
Temporal Representation: | Samples were collected approximately once a month from July 2005 to November 2009. | ||||
Environmental Conditions: | |||||
QAPP Information: | NPDES quality assurance. | ||||
QAPP Information Reference(s): | |||||
DECISION ID |
132567 |
Region 4 |
Coyote Creek |
||
Pollutant: | PCBs (Polychlorinated biphenyls) |
Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | New Decision |
Revision Status | Revised |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded. |
|
|||||
LOE ID: | 298232 | ||||
Pollutant: | PCBs (Polychlorinated biphenyls) | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Not Recorded | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 0 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed eSMR_Long Beach WRP data for Coyote Creek to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for PCBs (Polychlorinated biphenyls). Although a total of 19 samples were collected, 19 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5. | ||||
Data Reference: | WQ data from the California Integrated Water Quality System (CIWQS) assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The PCB, total aroclors criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is 0.014 ug/L. This value corresponds to the sum of aroclors 1242, 1254, 1221, 1232, 1248, 1260, and 1016 (California Toxics Rule, 2000). | ||||
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: | The samples were collected at 1 monitoring site: 658086 (RSW-002). | ||||
Temporal Representation: | Data for this waterbody were collected over the date range 2011-07-11 to 2020-07-09 | ||||
Environmental Conditions: | |||||
QAPP Information: | Los Angeles County Sanitation Districts. 2020. Los Angeles County Sanitation Districts Receiving Water Monitoring Program. | ||||
QAPP Information Reference(s): | Los Angeles County Sanitation Districts Receiving Water Monitoring Program | ||||
|
|||||
LOE ID: | 298230 | ||||
Pollutant: | PCBs (Polychlorinated biphenyls) | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Not Recorded | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 0 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed eSMR_Long Beach WRP data for Coyote Creek to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for PCBs (Polychlorinated biphenyls). Although a total of 19 samples were collected, 19 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5. | ||||
Data Reference: | WQ data from the California Integrated Water Quality System (CIWQS) assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The PCB, total aroclors criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is 0.014 ug/L. This value corresponds to the sum of aroclors 1242, 1254, 1221, 1232, 1248, 1260, and 1016 (California Toxics Rule, 2000). | ||||
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: | The samples were collected at 1 monitoring site: 658085 (RSW-001). | ||||
Temporal Representation: | Data for this waterbody were collected over the date range 2011-07-11 to 2020-07-09 | ||||
Environmental Conditions: | |||||
QAPP Information: | Los Angeles County Sanitation Districts. 2020. Los Angeles County Sanitation Districts Receiving Water Monitoring Program. | ||||
QAPP Information Reference(s): | Los Angeles County Sanitation Districts Receiving Water Monitoring Program | ||||
DECISION ID |
132565 |
Region 4 |
Coyote Creek |
||
Pollutant: | Pentachlorophenol (PCP) |
Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | Do Not List on 303(d) list (TMDL required list)(2018) |
Revision Status | Revised |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the section 303(d) list under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status. The following LOEs were removed because of a MUN* designation: 25141. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the section 303(d) list in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. 0 of 38 and 0 of 3 samples exceeded guideline and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because applicable water quality standards are not being exceeded. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 298152 | ||||
Pollutant: | Pentachlorophenol (PCP) | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 3 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed LA County MS4 data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the water quality threshold for Pentachlorophenol. | ||||
Data Reference: | WQ data from the MS4 database assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The pentachlorophenol criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is pH dependent. The criterion using a default pH value of 7.8 (when pH data is not present) is 15 ug/L. (California Toxics Rule, 2000). | ||||
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: | The samples were collected at 1 monitoring site: LSGR-S13 (Coyote Creek at Spring St). | ||||
Temporal Representation: | The samples were collected between the dates of 2016-01-06 and 2016-03-07 | ||||
Environmental Conditions: | |||||
QAPP Information: | Municipal Separate Storm Sewer System (MS4) | ||||
QAPP Information Reference(s): | Municipal Separate Storm Sewer System (MS4) | ||||
|
|||||
LOE ID: | 298226 | ||||
Pollutant: | Pentachlorophenol (PCP) | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Not Recorded | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 19 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed eSMR_Long Beach WRP data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 19 samples exceeded the water quality threshold for Pentachlorophenol. | ||||
Data Reference: | WQ data from the California Integrated Water Quality System (CIWQS) assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The pentachlorophenol criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is pH dependent. The criterion using a default pH value of 7.8 (when pH data is not present) is 15 ug/L. (California Toxics Rule, 2000). | ||||
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: | The samples were collected at 1 monitoring site: 658085 (RSW-001). | ||||
Temporal Representation: | The samples were collected between the dates of 2011-07-11 and 2020-07-09 | ||||
Environmental Conditions: | |||||
QAPP Information: | Los Angeles County Sanitation Districts. 2020. Los Angeles County Sanitation Districts Receiving Water Monitoring Program. | ||||
QAPP Information Reference(s): | Los Angeles County Sanitation Districts Receiving Water Monitoring Program | ||||
|
|||||
LOE ID: | 298227 | ||||
Pollutant: | Pentachlorophenol (PCP) | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Not Recorded | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 19 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed eSMR_Long Beach WRP data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 19 samples exceeded the water quality threshold for Pentachlorophenol. | ||||
Data Reference: | WQ data from the California Integrated Water Quality System (CIWQS) assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The pentachlorophenol criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is pH dependent. The criterion using a default pH value of 7.8 (when pH data is not present) is 15 ug/L. (California Toxics Rule, 2000). | ||||
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: | The samples were collected at 1 monitoring site: 658086 (RSW-002). | ||||
Temporal Representation: | The samples were collected between the dates of 2011-07-11 and 2020-07-09 | ||||
Environmental Conditions: | |||||
QAPP Information: | Los Angeles County Sanitation Districts. 2020. Los Angeles County Sanitation Districts Receiving Water Monitoring Program. | ||||
QAPP Information Reference(s): | Los Angeles County Sanitation Districts Receiving Water Monitoring Program | ||||
DECISION ID |
132589 |
Region 4 |
Coyote Creek |
||
Pollutant: | Permethrin |
Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | New Decision |
Revision Status | Revised |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded. |
|
|||||
LOE ID: | 298301 | ||||
Pollutant: | Permethrin | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 0 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed San Gabriel River Regional Monitoring Program data for Coyote Creek to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Permethrin. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5. | ||||
Data Reference: | Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | The chronic criterion for permethrin is 1 ng/L (expressed as a 4-day average). If the freely dissolved concentrations of permethrin were reported or could be calculated then these values were used for this assessment. In the absence of freely dissolved concentrations, total concentrations were used. | ||||
Guideline Reference: | Water Quality Criteria Report for Permethrin | ||||
Spatial Representation: | The samples were collected at 1 monitoring site: SMC01278_SGRRMP (SGLR01278_SGRRMP). | ||||
Temporal Representation: | Data for this waterbody were collected over the date range 2016-06-23 to 2016-06-23 | ||||
Environmental Conditions: | |||||
QAPP Information: | Aquatic Bioassay & Consulting Laboratories. 2019. San Gabriel River Regional Monitoring Program. | ||||
QAPP Information Reference(s): | San Gabriel River Regional Monitoring Program | ||||
DECISION ID |
132535 |
Region 4 |
Coyote Creek |
||
Pollutant: | Prallethrin |
Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | New Decision |
Revision Status | Revised |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded. |
|
|||||
LOE ID: | 298305 | ||||
Pollutant: | Prallethrin | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed San Gabriel River Regional Monitoring Program data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Prallethrin. | ||||
Data Reference: | Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | The evaluation guideline for prallethrin is the USEPA Aquatic Life Benchmark of 0.65 ug/L for an invertebrate (chronic). | ||||
Guideline Reference: | OPP Aquatic Life Benchmarks | ||||
Spatial Representation: | The samples were collected at 1 monitoring site: SMC01278_SGRRMP (SGLR01278_SGRRMP). | ||||
Temporal Representation: | The samples were collected between the dates of 2016-06-23 and 2016-06-23 | ||||
Environmental Conditions: | |||||
QAPP Information: | Aquatic Bioassay & Consulting Laboratories. 2019. San Gabriel River Regional Monitoring Program. | ||||
QAPP Information Reference(s): | San Gabriel River Regional Monitoring Program | ||||
DECISION ID |
132530 |
Region 4 |
Coyote Creek |
||
Pollutant: | Profenofos |
Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | New Decision |
Revision Status | Revised |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available. |
Regional Board Decision Recommendation: | Decision written by SWRCB staff. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded. |
|
|||||
LOE ID: | 298138 | ||||
Pollutant: | Profenofos | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 1 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed LA County MS4 data for Coyote Creek to determine beneficial use support and results are as follows: 1 of 1 samples exceeded the water quality threshold for Profenofos. | ||||
Data Reference: | WQ data from the MS4 database assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan for the Los Angeles Region states that: Surface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | The evaluation guideline for profenofos is the USEPA Aquatic Life Benchmark of 0.2 ug/L for an invertebrate (chronic). | ||||
Guideline Reference: | OPP Aquatic Life Benchmarks | ||||
Spatial Representation: | The samples were collected at 1 monitoring site: LSGR_S13 (Coyote Creek @ Spring St. mass emission station). | ||||
Temporal Representation: | The samples were collected between the dates of 2016-12-16 and 2016-12-16 | ||||
Environmental Conditions: | |||||
QAPP Information: | Municipal Separate Storm Sewer System (MS4) | ||||
QAPP Information Reference(s): | Municipal Separate Storm Sewer System (MS4) | ||||
DECISION ID |
132576 |
Region 4 |
Coyote Creek |
||
Pollutant: | Pyrethroids |
Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | New Decision |
Revision Status | Revised |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded. |
|
|||||
LOE ID: | 298306 | ||||
Pollutant: | Pyrethroids | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 0 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed San Gabriel River Regional Monitoring Program data for Coyote Creek to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Pyrethroids. Although a total of 1 samples were collected, 1 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5. | ||||
Data Reference: | Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | The summed ratios of the pyrethroid pesticides bifenthrin, cyfluthrin, cypermethrin, esfenvalerate, lambda-cyhalothrin, permethrin and their respective chronic concentration goals are not to exceed 1. If the freely dissolved concentrations of these pesticides were reported or could be calculated then these values were used for this assessment. In the absence of freely dissolved concentrations, total concentrations were used. | ||||
Guideline Reference: | Amendment to the Water Quality Control Plan for the Sacramento River and San Joaquin River Basins for the Control of Pyrethroid Pesticide Discharges | ||||
Spatial Representation: | The samples were collected at 1 monitoring site: SMC01278_SGRRMP (SGLR01278_SGRRMP). | ||||
Temporal Representation: | Data for this waterbody were collected over the date range 2016-06-23 to 2016-06-23 | ||||
Environmental Conditions: | |||||
QAPP Information: | Aquatic Bioassay & Consulting Laboratories. 2019. San Gabriel River Regional Monitoring Program. | ||||
QAPP Information Reference(s): | San Gabriel River Regional Monitoring Program | ||||
DECISION ID |
132568 |
Region 4 |
Coyote Creek |
||
Pollutant: | Selenium |
Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | Do Not List on 303(d) list (TMDL required list)(2018) |
Revision Status | Revised |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status. 18 lines of evidence are available in the administrative record to assess this pollutant. 3 of the 238 samples exceed the CRITERIA. 3 of the 158 samples exceed the CRITERIA. 13 of the 162 samples exceed the CRITERIA. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the CWA section 303(d) List in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. 3 of 238, 3 of 158, and 13 of 162 samples exceeded the CRITERIA and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because applicable water quality standards are not being exceeded. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 2426 | ||||
Pollutant: | Selenium | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 38 | ||||
Number of Exceedances: | 1 | ||||
Data and Information Type: | Not Specified | ||||
Data Used to Assess Water Quality: | Numeric data generated from a total of 38 samples taken at three different Los Angeles County Sanitation District sampling stations (sampling stations RA1, RA, R9E) between 8/3/95 and 5/11/04 at different sampling intervals. One sample in station RA1 taken 7/14/03 exceeded the total selenium continuous criterion concentration, which equals the highest concentration of a pollutant to which aquatic life can be exposed for an extended period of time (4days) without deleterious effects (LACSD, 2004b). | ||||
Data Reference: | Placeholder reference 2006 303(d) | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | CTR Selenium Criterion for Continuous Concentration in water for the protection of aquatic life is 5 ug/l, expressed in the total recoverable form. The criterion is linked and applicable for the protection of aquatic life Beneficial Uses. | ||||
Objective/Criterion Reference: | Placeholder reference 2006 303(d) | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Three (3) sample sites sampled between 8/3/95 and 5/11/04 at different sampling intervals. | ||||
Temporal Representation: | Thirty-eight samples were taken at three sampling stations primarily during the dry season between 8/3/95 to 5/11/04. | ||||
Environmental Conditions: | Results are from samples taken from 1995 to 2004 by the LA County Sanitation Districts. Data primarily reflects dry weather conditions. | ||||
QAPP Information: | Quality Assurance Document Of The County Sanitation Districts Of Los Angeles County. July 2003. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 298242 | ||||
Pollutant: | Selenium | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Not Recorded | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 79 | ||||
Number of Exceedances: | 2 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed eSMR_Long Beach WRP data for Coyote Creek to determine beneficial use support and results are as follows: 2 of 79 samples exceeded the water quality threshold for Selenium. | ||||
Data Reference: | WQ data from the California Integrated Water Quality System (CIWQS) assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The selenium criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is 5 ug/L (California Toxics Rule, 2000). | ||||
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: | The samples were collected at 1 monitoring site: 658085 (RSW-001). | ||||
Temporal Representation: | The samples were collected between the dates of 2011-07-11 and 2020-09-16 | ||||
Environmental Conditions: | |||||
QAPP Information: | Los Angeles County Sanitation Districts. 2020. Los Angeles County Sanitation Districts Receiving Water Monitoring Program. | ||||
QAPP Information Reference(s): | Los Angeles County Sanitation Districts Receiving Water Monitoring Program | ||||
|
|||||
LOE ID: | 298307 | ||||
Pollutant: | Selenium | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 2 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed San Gabriel River Regional Monitoring Program data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 2 samples exceeded the water quality threshold for Selenium. | ||||
Data Reference: | Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The selenium criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is 5 ug/L (California Toxics Rule, 2000). | ||||
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: | The samples were collected at 1 monitoring site: SMC01278_SGRRMP (SGLR01278_SGRRMP). | ||||
Temporal Representation: | The samples were collected between the dates of 2016-06-23 and 2017-07-19 | ||||
Environmental Conditions: | |||||
QAPP Information: | Aquatic Bioassay & Consulting Laboratories. 2019. San Gabriel River Regional Monitoring Program. | ||||
QAPP Information Reference(s): | San Gabriel River Regional Monitoring Program | ||||
|
|||||
LOE ID: | 298240 | ||||
Pollutant: | Selenium | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Not Recorded | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 79 | ||||
Number of Exceedances: | 1 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed eSMR_Long Beach WRP data for Coyote Creek to determine beneficial use support and results are as follows: 1 of 79 samples exceeded the water quality threshold for Selenium. | ||||
Data Reference: | WQ data from the California Integrated Water Quality System (CIWQS) assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The selenium criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is 5 ug/L (California Toxics Rule, 2000). | ||||
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: | The samples were collected at 1 monitoring site: 658086 (RSW-002). | ||||
Temporal Representation: | The samples were collected between the dates of 2011-07-11 and 2020-09-16 | ||||
Environmental Conditions: | |||||
QAPP Information: | Los Angeles County Sanitation Districts. 2020. Los Angeles County Sanitation Districts Receiving Water Monitoring Program. | ||||
QAPP Information Reference(s): | Los Angeles County Sanitation Districts Receiving Water Monitoring Program | ||||
|
|||||
LOE ID: | 298140 | ||||
Pollutant: | Selenium | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 2 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed LA County MS4 data for Pacific Ocean Shoreline, Aliso HSA, at Blue Lagoon to determine beneficial use support and results are as follows: 0 of 2 samples exceeded the water quality threshold for Selenium. | ||||
Data Reference: | WQ data from the MS4 database assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The selenium criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is 5 ug/L (California Toxics Rule, 2000). | ||||
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: | The samples were collected at 1 monitoring site: S13 (Coyote Creek @ Spring St. mass emission station). | ||||
Temporal Representation: | The samples were collected between the dates of 2015-07-29 and 2015-12-14 | ||||
Environmental Conditions: | |||||
QAPP Information: | Municipal Separate Storm Sewer System (MS4) | ||||
QAPP Information Reference(s): | Municipal Separate Storm Sewer System (MS4) | ||||
|
|||||
LOE ID: | 298151 | ||||
Pollutant: | Selenium | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 7 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed LA County MS4 data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 7 samples exceeded the water quality threshold for Selenium. | ||||
Data Reference: | WQ data from the MS4 database assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The selenium criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is 5 ug/L (California Toxics Rule, 2000). | ||||
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: | The samples were collected at 1 monitoring site: LSGR-S13 (Coyote Creek at Spring St). | ||||
Temporal Representation: | The samples were collected between the dates of 2015-07-29 and 2019-11-21 | ||||
Environmental Conditions: | |||||
QAPP Information: | Municipal Separate Storm Sewer System (MS4) | ||||
QAPP Information Reference(s): | Municipal Separate Storm Sewer System (MS4) | ||||
|
|||||
LOE ID: | 298139 | ||||
Pollutant: | Selenium | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 2 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed LA County MS4 data for Pacific Ocean Shoreline, Aliso HSA, at Blue Lagoon to determine beneficial use support and results are as follows: 0 of 2 samples exceeded the water quality threshold for Selenium. | ||||
Data Reference: | WQ data from the MS4 database assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The selenium criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is 5 ug/L (California Toxics Rule, 2000). | ||||
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: | The samples were collected at 1 monitoring site: S13 (Coyote Creek @ Spring St. mass emission station). | ||||
Temporal Representation: | The samples were collected between the dates of 2015-07-29 and 2015-12-14 | ||||
Environmental Conditions: | |||||
QAPP Information: | Municipal Separate Storm Sewer System (MS4) | ||||
QAPP Information Reference(s): | Municipal Separate Storm Sewer System (MS4) | ||||
|
|||||
LOE ID: | 298150 | ||||
Pollutant: | Selenium | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed LA County MS4 data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Selenium. | ||||
Data Reference: | WQ data from the MS4 database assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The selenium criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is 5 ug/L (California Toxics Rule, 2000). | ||||
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: | The samples were collected at 1 monitoring site: LSGR_S13 (Coyote Creek @ Spring St. mass emission station). | ||||
Temporal Representation: | The samples were collected between the dates of 2016-07-28 and 2016-07-28 | ||||
Environmental Conditions: | |||||
QAPP Information: | Municipal Separate Storm Sewer System (MS4) | ||||
QAPP Information Reference(s): | Municipal Separate Storm Sewer System (MS4) | ||||
|
|||||
LOE ID: | 83868 | ||||
Pollutant: | Selenium | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 26 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) | ||||
Data Used to Assess Water Quality: | None of the 26 samples exceeded the CTR value for selenium. | ||||
Data Reference: | Data for Various Waterbodies in Region 8 and Region 9, 2006-2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Surface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | California Toxics Rule (CTR) lists criterion continuous concentrations (4-day average) to protect aquatic life in freshwater. The CTR for selenium is 5.0 ug/L. | ||||
Guideline Reference: | Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition | ||||
Spatial Representation: | Samples were collected from station CCBA01, Coyote Creek at Valley View Drive. | ||||
Temporal Representation: | Samples were intermittently collected from September 2006 until January 2009. | ||||
Environmental Conditions: | Approximately 77% of the samples were collected after storm events. | ||||
QAPP Information: | Samples were collected and analyzed in accordance with the signed and certified, Quality Assurance Management Plan for the Orange County Stormwater Program. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 83869 | ||||
Pollutant: | Selenium | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 43 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) | ||||
Data Used to Assess Water Quality: | None of the 43 samples exceeded the criteria of 5 ug/L. | ||||
Data Reference: | Data for Various Pollutants in Various Water Bodies in Sanitation Districts of Los Angeles County, 2005-2010. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Surface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | California Toxics Rule (CTR) lists criterion continuous concentrations (4-day average) to protect aquatic life in freshwater. The CTR for selenium is 5.0 ug/L. | ||||
Guideline Reference: | Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition | ||||
Spatial Representation: | Samples were collected from Coyote Creek from location LB also called SG at three sublocations: RA, RA1, and RA1B. | ||||
Temporal Representation: | Samples were collected monthly from June 2006 through May of 2010. | ||||
Environmental Conditions: | |||||
QAPP Information: | The Biology Department of the San Jose Creek Water Quality Laboratory is responsible for collecting samples from receiving water stations along the San Gabriel River, Coyote Creek, San Jose Creek, Santa Clara River, and the Rio Hondo River. Data is collected for the Los Angeles Sanitation District NPDES permits. Some standard operating procedures for sampling were submitted, however no QA Project Plan was. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 25162 | ||||
Pollutant: | Selenium | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Aquatic Life Use: | Preservation of Rare & Endangered Species | Wildlife Habitat | ||||
Number of Samples: | 28 | ||||
Number of Exceedances: | 1 | ||||
Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) | ||||
Data Used to Assess Water Quality: | One of 28 samples exceeded the California Toxics Rule (CTR) criterion continuous concentration for selenium. Water quality samples were taken and analyzed for selenium in accordance with the Sanitation Districts of Los Angeles County permit monitoring and testing parameters. | ||||
Data Reference: | NPDES receiving water monitoring reports for Long Beach Water Reclamation Plant (NPDES No. CA0054119), Los Coyotes Water Reclamation Plant (NPDES No. CA0053716), Pomona Water Reclamation Plant (NPDES No. CA0053911), San Jose Creek Water Reclamation Plant (NPDES No. CA0053619), and Whittier Narrows Creek Water Reclamation Plant (NPDES No. CA0054011). | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | CTR lists a criterion continuous concentration of 5.0 ug/L for selenium to protect aquatic life in freshwater. | ||||
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: | The Sanitation Districts of Los Angeles County conducted sampling in Coyote Creek in the following receiving water monitoring stations: station RA1 located upstream of discharge from Long Beach Water Reclamation Plant; station RA located downstream of discharge from Long Beach Water Reclamation Plant; and station R9 East located at the downstream end of the pavement lining (near Atherton Street) in the eastern low flow channel of San Gabriel River. | ||||
Temporal Representation: | Grab samples were taken and analyzed on an approximately monthly basis from August 2004 to February 2007. | ||||
Environmental Conditions: | |||||
QAPP Information: | Data was collected in compliance with the sampling and monitoring procedures detailed in Sanitation Districts of Los Angeles County Permit (No. CA0054119) Monitoring and Reporting Program. | ||||
QAPP Information Reference(s): | Long Beach Water Reclamation Plant Monitoring and Reporting Program for NPDES No. CA0054119 (County Sanitation Districts of Los Angeles County) | ||||
|
|||||
LOE ID: | 2425 | ||||
Pollutant: | Selenium | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 64 | ||||
Number of Exceedances: | 4 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Numeric data generated from 64 samples taken from 11/10/97 to 1/13/04 at one to two-week sampling interval. Four samples exceeded the total selenium continuous criterion concentration, which equals the highest concentration of a pollutant to which aquatic life can be exposed for an extended period of time without deleterious effects (LACDPW, 2004c). | ||||
Data Reference: | Placeholder reference 2006 303(d) | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | CTR Selenium Criterion for Continuous Concentration in water for the protection of aquatic life is 5 ug/l, expressed in the total recoverable form. The criterion is linked and applicable for the protection of aquatic life Beneficial Uses. | ||||
Objective/Criterion Reference: | Placeholder reference 2006 303(d) | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Samples collected at one sampling site from during primarily the wet season beginning from 11/10/97 through 1/13/04 at approximately one to two week intervals. | ||||
Temporal Representation: | Sixty-four samples taken during primarily the wet season from 11/10/97 to 1/13/04 at approximately one to two week intervals. | ||||
Environmental Conditions: | Results are from samples taken from 1997 to 2004 by the LADPW. Sampling was carried out at Spring Street station (S13) on Coyote Creek during primarily wet season conditions. | ||||
QAPP Information: | Evaluation of Analytes and QA/QC Specifications for Monitoring Program (Woodward-Clyde, 1996) Los Angeles County Department of Public Works. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 298309 | ||||
Pollutant: | Selenium | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed SWAMP RWB8 Monitoring data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Selenium. | ||||
Data Reference: | Field, Habitat, Toxicity, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | The selenium criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is 5 ug/L (California Toxics Rule, 2000). | ||||
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: | The samples were collected at 1 monitoring site: 845RB8633 (Coyote Creek Random Olsen Site 633). | ||||
Temporal Representation: | The samples were collected between the dates of 2013-07-08 and 2013-07-08 | ||||
Environmental Conditions: | |||||
QAPP Information: | SWRCB. 2018. This is a placeholder reference for data that 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. | ||||
|
|||||
LOE ID: | 25164 | ||||
Pollutant: | Selenium | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Aquatic Life Use: | Preservation of Rare & Endangered Species | Wildlife Habitat | ||||
Number of Samples: | 19 | ||||
Number of Exceedances: | 6 | ||||
Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) | ||||
Data Used to Assess Water Quality: | Six of 19 samples exceeded the California Toxics Rule (CTR) criterion continuous concentration for selenium. Water quality samples were taken and analyzed for selenium in accordance with the Municipal Separate Storm Sewer System (MS4) permit monitoring and testing parameters. | ||||
Data Reference: | Monitoring Report (MS4 Data) - CI 6948 for order no. 01-182 NPDES No. CAS004001 Municipal Storm Water and Urban Runoff Discharges within the County of Los Angeles, and the Incorporated Cities therein, Except the City of Long Beach | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | CTR lists a criterion continuous concentration of 5.0 ug/L for selenium to protect aquatic life in freshwater. | ||||
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: | The Los Angeles County Department of Public Works conducted sampling at the mass emission monitoring station S13 located below Spring Street in Coyote Creek (Lat: 33.8098610175, Long: -118.077061937). | ||||
Temporal Representation: | Composite samples were taken approximately six per year (four wet-weather events and two dry-weather events) from October October 2004 through April 2007. | ||||
Environmental Conditions: | |||||
QAPP Information: | Data was collected in compliance with the sampling and monitoring procedures detailed in County of Los Angeles MS4 Permit (NPDES No. CAS004001) Monitoring and Reporting Program. | ||||
QAPP Information Reference(s): | Monitoring and Reporting Program - CI 6948 for order no. 01-182 NPDES No. CAS004001 Municipal Storm Water and Urban Runoff Discharges within the County of Los Angeles, and the incorporated cities, except the City of Long Beach | ||||
|
|||||
LOE ID: | 298308 | ||||
Pollutant: | Selenium | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 2 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed San Gabriel River Regional Monitoring Program data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 2 samples exceeded the water quality threshold for Selenium. | ||||
Data Reference: | Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The selenium criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is 5 ug/L (California Toxics Rule, 2000). | ||||
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: | The samples were collected at 1 monitoring site: SMC01278_SGRRMP (SGLR01278_SGRRMP). | ||||
Temporal Representation: | The samples were collected between the dates of 2016-06-23 and 2017-07-19 | ||||
Environmental Conditions: | |||||
QAPP Information: | Aquatic Bioassay & Consulting Laboratories. 2019. San Gabriel River Regional Monitoring Program. | ||||
QAPP Information Reference(s): | San Gabriel River Regional Monitoring Program | ||||
|
|||||
LOE ID: | 298245 | ||||
Pollutant: | Selenium | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 79 | ||||
Number of Exceedances: | 2 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed eSMR_Long Beach WRP data for Coyote Creek to determine beneficial use support and results are as follows: 2 of 79 samples exceeded the water quality threshold for Selenium. | ||||
Data Reference: | WQ data from the California Integrated Water Quality System (CIWQS) assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The selenium criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is 5 ug/L (California Toxics Rule, 2000). | ||||
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: | The samples were collected at 1 monitoring site: 658085 (RSW-001). | ||||
Temporal Representation: | The samples were collected between the dates of 2011-07-11 and 2020-09-16 | ||||
Environmental Conditions: | |||||
QAPP Information: | Los Angeles County Sanitation Districts. 2020. Los Angeles County Sanitation Districts Receiving Water Monitoring Program. | ||||
QAPP Information Reference(s): | Los Angeles County Sanitation Districts Receiving Water Monitoring Program | ||||
|
|||||
LOE ID: | 298146 | ||||
Pollutant: | Selenium | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 7 | ||||
Number of Exceedances: | 1 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed LA County MS4 data for Coyote Creek to determine beneficial use support and results are as follows: 1 of 7 samples exceeded the water quality threshold for Selenium. | ||||
Data Reference: | WQ data from the MS4 database assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The selenium criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is 5 ug/L (California Toxics Rule, 2000). | ||||
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: | The samples were collected at 1 monitoring site: LSGR-S13 (Coyote Creek at Spring St). | ||||
Temporal Representation: | The samples were collected between the dates of 2015-07-29 and 2019-11-21 | ||||
Environmental Conditions: | |||||
QAPP Information: | Municipal Separate Storm Sewer System (MS4) | ||||
QAPP Information Reference(s): | Municipal Separate Storm Sewer System (MS4) | ||||
|
|||||
LOE ID: | 298243 | ||||
Pollutant: | Selenium | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 79 | ||||
Number of Exceedances: | 1 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed eSMR_Long Beach WRP data for Coyote Creek to determine beneficial use support and results are as follows: 1 of 79 samples exceeded the water quality threshold for Selenium. | ||||
Data Reference: | WQ data from the California Integrated Water Quality System (CIWQS) assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The selenium criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is 5 ug/L (California Toxics Rule, 2000). | ||||
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: | The samples were collected at 1 monitoring site: 658086 (RSW-002). | ||||
Temporal Representation: | The samples were collected between the dates of 2011-07-11 and 2020-09-16 | ||||
Environmental Conditions: | |||||
QAPP Information: | Los Angeles County Sanitation Districts. 2020. Los Angeles County Sanitation Districts Receiving Water Monitoring Program. | ||||
QAPP Information Reference(s): | Los Angeles County Sanitation Districts Receiving Water Monitoring Program | ||||
DECISION ID |
132569 |
Region 4 |
Coyote Creek |
||
Pollutant: | Silver |
Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | Do Not List on 303(d) list (TMDL required list)(2018) |
Revision Status | Revised |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status. 8 lines of evidence are available in the administrative record to assess this pollutant. 0 of 104 samples exceeded the CRITERIA. 0 of 79 samples exceeded the CRITERIA. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the CWA section 303(d) List in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. 0 of 104 and 0 of 79 samples exceeded the CRITERIA and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because applicable water quality standards are not being exceeded. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 83870 | ||||
Pollutant: | Silver | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 26 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) | ||||
Data Used to Assess Water Quality: | None of the 26 samples exceeded the hardness adjusted CTR value for silver. | ||||
Data Reference: | Data for Various Waterbodies in Region 8 and Region 9, 2006-2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Surface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | California Toxics Rule (CTR) lists criterion maximum concentrations for silver to protect aquatic life in freshwater (1-hour average). The disolved silver criterion in freshwater is hardness dependent for each sample and varies based on the ambient hardness during sampling. Section (b)(1) in CTR contains the hardness dependent formula for the metals criterion. If no hardness data were available, a value of 100 mg/L was used. | ||||
Guideline Reference: | Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition | ||||
Spatial Representation: | Samples were collected from station CCBA01, Coyote Creek at Valley View Drive. | ||||
Temporal Representation: | Samples were intermittently collected from September 2006 until January 2009. | ||||
Environmental Conditions: | Approximately 77% of the samples were collected after storm events. | ||||
QAPP Information: | Samples were collected and analyzed in accordance with the signed and certified, Quality Assurance Management Plan for the Orange County Stormwater Program. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 298311 | ||||
Pollutant: | Silver | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed San Gabriel River Regional Monitoring Program data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Silver. | ||||
Data Reference: | Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The dissolved silver criterion maximum concentration (CMC) to protect aquatic life in freshwater is hardnesss dependent. The criterion when calculated using a default hardness of 100 mg/L is 3.4 ug/L. This criterion was divided by 2 in order to better represent a CMC value as specified in footnote (g) of Table (b)(1) of the California Toxics Rule, 2000. | ||||
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: | The samples were collected at 1 monitoring site: SMC01278_SGRRMP (SGLR01278_SGRRMP). | ||||
Temporal Representation: | The samples were collected between the dates of 2016-06-23 and 2016-06-23 | ||||
Environmental Conditions: | |||||
QAPP Information: | Aquatic Bioassay & Consulting Laboratories. 2019. San Gabriel River Regional Monitoring Program. | ||||
QAPP Information Reference(s): | San Gabriel River Regional Monitoring Program | ||||
|
|||||
LOE ID: | 298143 | ||||
Pollutant: | Silver | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed LA County MS4 data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Silver. | ||||
Data Reference: | WQ data from the MS4 database assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The dissolved silver criterion maximum concentration (CMC) to protect aquatic life in freshwater is hardnesss dependent. The criterion when calculated using a default hardness of 100 mg/L is 3.4 ug/L. This criterion was divided by 2 in order to better represent a CMC value as specified in footnote (g) of Table (b)(1) of the California Toxics Rule, 2000. | ||||
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: | The samples were collected at 1 monitoring site: LSGR-S13 (Coyote Creek at Spring St). | ||||
Temporal Representation: | The samples were collected between the dates of 2015-12-14 and 2015-12-14 | ||||
Environmental Conditions: | |||||
QAPP Information: | Municipal Separate Storm Sewer System (MS4) | ||||
QAPP Information Reference(s): | Municipal Separate Storm Sewer System (MS4) | ||||
|
|||||
LOE ID: | 298310 | ||||
Pollutant: | Silver | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed SWAMP RWB8 Monitoring data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Silver. | ||||
Data Reference: | Field, Habitat, Toxicity, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | The dissolved silver criterion maximum concentration (CMC) to protect aquatic life in freshwater is hardnesss dependent. The criterion when calculated using a default hardness of 100 mg/L is 3.4 ug/L. This criterion was divided by 2 in order to better represent a CMC value as specified in footnote (g) of Table (b)(1) of the California Toxics Rule, 2000. | ||||
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: | The samples were collected at 1 monitoring site: 845RB8633 (Coyote Creek Random Olsen Site 633). | ||||
Temporal Representation: | The samples were collected between the dates of 2013-07-08 and 2013-07-08 | ||||
Environmental Conditions: | |||||
QAPP Information: | SWRCB. 2018. This is a placeholder reference for data that 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. | ||||
|
|||||
LOE ID: | 298237 | ||||
Pollutant: | Silver | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 37 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed eSMR_Long Beach WRP data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 37 samples exceeded the water quality threshold for Silver. | ||||
Data Reference: | WQ data from the California Integrated Water Quality System (CIWQS) assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The dissolved silver criterion maximum concentration (CMC) to protect aquatic life in freshwater is hardnesss dependent. The criterion when calculated using a default hardness of 100 mg/L is 3.4 ug/L. This criterion was divided by 2 in order to better represent a CMC value as specified in footnote (g) of Table (b)(1) of the California Toxics Rule, 2000. | ||||
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: | The samples were collected at 1 monitoring site: 658085 (RSW-001). | ||||
Temporal Representation: | The samples were collected between the dates of 2011-07-11 and 2020-07-09 | ||||
Environmental Conditions: | |||||
QAPP Information: | Los Angeles County Sanitation Districts. 2020. Los Angeles County Sanitation Districts Receiving Water Monitoring Program. | ||||
QAPP Information Reference(s): | Los Angeles County Sanitation Districts Receiving Water Monitoring Program | ||||
|
|||||
LOE ID: | 298238 | ||||
Pollutant: | Silver | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 37 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed eSMR_Long Beach WRP data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 37 samples exceeded the water quality threshold for Silver. | ||||
Data Reference: | WQ data from the California Integrated Water Quality System (CIWQS) assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The dissolved silver criterion maximum concentration (CMC) to protect aquatic life in freshwater is hardnesss dependent. The criterion when calculated using a default hardness of 100 mg/L is 3.4 ug/L. This criterion was divided by 2 in order to better represent a CMC value as specified in footnote (g) of Table (b)(1) of the California Toxics Rule, 2000. | ||||
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: | The samples were collected at 1 monitoring site: 658086 (RSW-002). | ||||
Temporal Representation: | The samples were collected between the dates of 2011-07-11 and 2020-07-09 | ||||
Environmental Conditions: | |||||
QAPP Information: | Los Angeles County Sanitation Districts. 2020. Los Angeles County Sanitation Districts Receiving Water Monitoring Program. | ||||
QAPP Information Reference(s): | Los Angeles County Sanitation Districts Receiving Water Monitoring Program | ||||
|
|||||
LOE ID: | 298144 | ||||
Pollutant: | Silver | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed LA County MS4 data for Pacific Ocean Shoreline, Aliso HSA, at Blue Lagoon to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Silver. | ||||
Data Reference: | WQ data from the MS4 database assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The dissolved silver criterion maximum concentration (CMC) to protect aquatic life in freshwater is hardnesss dependent. The criterion when calculated using a default hardness of 100 mg/L is 3.4 ug/L. This criterion was divided by 2 in order to better represent a CMC value as specified in footnote (g) of Table (b)(1) of the California Toxics Rule, 2000. | ||||
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: | The samples were collected at 1 monitoring site: S13 (Coyote Creek @ Spring St. mass emission station). | ||||
Temporal Representation: | The samples were collected between the dates of 2015-12-14 and 2015-12-14 | ||||
Environmental Conditions: | |||||
QAPP Information: | Municipal Separate Storm Sewer System (MS4) | ||||
QAPP Information Reference(s): | Municipal Separate Storm Sewer System (MS4) | ||||
|
|||||
LOE ID: | 83871 | ||||
Pollutant: | Silver | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total Dissolved | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 79 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) | ||||
Data Used to Assess Water Quality: | None of the 79 samples exceeded the hardness adjusted criteria. | ||||
Data Reference: | Data for Various Pollutants in Various Water Bodies in Sanitation Districts of Los Angeles County, 2005-2010. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Surface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | California Toxics Rule (CTR) lists criterion maximum concentrations for silver to protect aquatic life in freshwater (1-hour average). The silver criterion in freshwater is hardness dependent for each sample and varies based on the ambient hardness during sampling. Section (b)(1) in CTR contains the hardness dependent formula for the metals criterion. If no hardness data were available, a value of 100 mg/L was used. | ||||
Guideline Reference: | Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition | ||||
Spatial Representation: | Samples were collected from Coyote Creek from location LB also called SG at three sublocations: RA, RA1, and RA1B. | ||||
Temporal Representation: | Samples were collected monthly from June 2006 through May of 2010. | ||||
Environmental Conditions: | |||||
QAPP Information: | The Biology Department of the San Jose Creek Water Quality Laboratory is responsible for collecting samples from receiving water stations along the San Gabriel River, Coyote Creek, San Jose Creek, Santa Clara River, and the Rio Hondo River. Data is collected for the Los Angeles Sanitation District NPDES permits. Some standard operating procedures for sampling were submitted, however no QA Project Plan was. | ||||
QAPP Information Reference(s): | |||||
DECISION ID |
132533 |
Region 4 |
Coyote Creek |
||
Pollutant: | T-Fluvalinate |
Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | New Decision |
Revision Status | Revised |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded. |
|
|||||
LOE ID: | 298314 | ||||
Pollutant: | T-Fluvalinate | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed San Gabriel River Regional Monitoring Program data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for T-Fluvalinate. | ||||
Data Reference: | Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan for the Los Angeles Region states that: No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | The evaluation guideline for tau-fluvalinate is the USEPA Aquatic Life Benchmark of 0.064 ug/L for a fish (chronic). | ||||
Guideline Reference: | OPP Aquatic Life Benchmarks | ||||
Spatial Representation: | The samples were collected at 1 monitoring site: SMC01278_SGRRMP (SGLR01278_SGRRMP). | ||||
Temporal Representation: | The samples were collected between the dates of 2016-06-23 and 2016-06-23 | ||||
Environmental Conditions: | |||||
QAPP Information: | Aquatic Bioassay & Consulting Laboratories. 2019. San Gabriel River Regional Monitoring Program. | ||||
QAPP Information Reference(s): | San Gabriel River Regional Monitoring Program | ||||
DECISION ID |
132570 |
Region 4 |
Coyote Creek |
||
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)(2018) |
Revision Status | Revised |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.2 of the Listing Policy. Under section 3.2 a single line of evidence is necessary to assess listing status. Seven lines of evidence are available in the administrative record to assess this pollutant. Based on the readily available data and information, the weight of evidence indicates that there is insufficient justification in favor of placing this water segment-pollutant combination on the CWA section 303(d) List. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. 115 of 585 samples exceeded the evaluation guideline and this exceeds the allowable frequency listed in Table 3.2 of the Listing Policy. However, it cannot be shown at this time that waterbody exceeds the WARM objective of 80 °F as a result of waste discharges, as required by the Basin Plan for the Los Angeles Region. If at a future time it can be shown that the temperature exceedances result from waste discharge, these data will be reevaluated. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information suggests that an impairment is probable, but it cannot be shown at this time that waterbody exceeds the objective of 80 °F as a result of waste discharges, as required by the Basin Plan for the Los Angeles Region. If at a future time it can be shown that the temperature exceedances result from waste discharge, these data will be reevaluated. |
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: | 83873 | ||||
Pollutant: | Temperature, water | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 170 | ||||
Number of Exceedances: | 28 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Numeric data generated from 170 averages of temperature had 28 exceedences. | ||||
Data Reference: | Data for Various Pollutants in Various Water Bodies in Sanitation Districts of Los Angeles County, 2005-2010. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | At no time shall warm freshwater habitat-designated waters be raised above 80 degrees Fahrenheit as a result of waste discharges. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Samples were collected from the LB-RA1, LB-RA, and LB-RA1B stations. | ||||
Temporal Representation: | Samples were collected approximately once a month from July 2005 to November 2009. | ||||
Environmental Conditions: | |||||
QAPP Information: | NPDES quality assurance. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 83872 | ||||
Pollutant: | Temperature, water | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 22 | ||||
Number of Exceedances: | 1 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | One of 22 samples exceeded the objective. One temperature sample was reported as "2428" and has been removed from assessment due to clerical error | ||||
Data Reference: | Data for Various Waterbodies in Region 8 and Region 9, 2006-2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | At no time shall warm freshwater habitat-designated waters be raised above 80 degrees Fahrenheit as a result of waste discharges. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Samples were collected from the CCBA01 station. | ||||
Temporal Representation: | Samples were collected approximately twice semi-annually from September 2006 to June 2009. | ||||
Environmental Conditions: | |||||
QAPP Information: | NPDES quality assurance. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 298315 | ||||
Pollutant: | Temperature, water | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 2 | ||||
Number of Exceedances: | 1 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed SWAMP RWB8 Monitoring data for Coyote Creek to determine beneficial use support and results are as follows: 1 of 2 samples exceeded the water quality threshold for Temperature. | ||||
Data Reference: | Field, Habitat, Toxicity, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan for the Los Angeles Region (page 3-45) states that: For waters designated WARM, water temperature shall not be altered by more than 5 °F above the natural temperature. At no time shall these WARM-designated waters be raised above 80 °F as a result of waste discharges. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | The samples were collected at 1 monitoring site: 845RB8633 (Coyote Creek Random Olsen Site 633). | ||||
Temporal Representation: | The samples were collected between the dates of 2011-07-26 and 2013-07-08 | ||||
Environmental Conditions: | |||||
QAPP Information: | SWRCB. 2018. This is a placeholder reference for data that 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. | ||||
|
|||||
LOE ID: | 298312 | ||||
Pollutant: | Temperature, water | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 2 | ||||
Number of Exceedances: | 2 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed San Gabriel River Regional Monitoring Program data for Coyote Creek to determine beneficial use support and results are as follows: 2 of 2 samples exceeded the water quality threshold for Temperature. | ||||
Data Reference: | Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan for the Los Angeles Region (page 3-45) states that: For waters designated WARM, water temperature shall not be altered by more than 5 °F above the natural temperature. At no time shall these WARM-designated waters be raised above 80 °F as a result of waste discharges. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | The samples were collected at 1 monitoring site: SMC01278_SGRRMP (SGLR01278_SGRRMP). | ||||
Temporal Representation: | The samples were collected between the dates of 2016-06-23 and 2017-07-19 | ||||
Environmental Conditions: | |||||
QAPP Information: | Aquatic Bioassay & Consulting Laboratories. 2019. San Gabriel River Regional Monitoring Program. | ||||
QAPP Information Reference(s): | San Gabriel River Regional Monitoring Program | ||||
|
|||||
LOE ID: | 298244 | ||||
Pollutant: | Temperature, water | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 203 | ||||
Number of Exceedances: | 51 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed eSMR_Long Beach WRP data for Coyote Creek to determine beneficial use support and results are as follows: 51 of 203 samples exceeded the water quality threshold for Temperature. | ||||
Data Reference: | WQ data from the California Integrated Water Quality System (CIWQS) assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan for the Los Angeles Region (page 3-45) states that: For waters designated WARM, water temperature shall not be altered by more than 5 °F above the natural temperature. At no time shall these WARM-designated waters be raised above 80 °F as a result of waste discharges. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | The samples were collected at 1 monitoring site: 658086 (RSW-002). | ||||
Temporal Representation: | The samples were collected between the dates of 2011-06-01 and 2020-10-12 | ||||
Environmental Conditions: | |||||
QAPP Information: | Los Angeles County Sanitation Districts. 2020. Los Angeles County Sanitation Districts Receiving Water Monitoring Program. | ||||
QAPP Information Reference(s): | Los Angeles County Sanitation Districts Receiving Water Monitoring Program | ||||
|
|||||
LOE ID: | 298313 | ||||
Pollutant: | Temperature, water | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed SWAMP RWB8 Monitoring data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Temperature. | ||||
Data Reference: | Field, Habitat, Toxicity, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan for the Los Angeles Region (page 3-45) states that: For waters designated WARM, water temperature shall not be altered by more than 5 °F above the natural temperature. At no time shall these WARM-designated waters be raised above 80 °F as a result of waste discharges. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | The samples were collected at 1 monitoring site: 845CTC480 (Coyote Creek Random Olsen Site 480). | ||||
Temporal Representation: | The samples were collected between the dates of 2012-06-19 and 2012-06-19 | ||||
Environmental Conditions: | |||||
QAPP Information: | SWRCB. 2018. This is a placeholder reference for data that 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. | ||||
|
|||||
LOE ID: | 298246 | ||||
Pollutant: | Temperature, water | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 185 | ||||
Number of Exceedances: | 32 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed eSMR_Long Beach WRP data for Coyote Creek to determine beneficial use support and results are as follows: 32 of 185 samples exceeded the water quality threshold for Temperature. | ||||
Data Reference: | WQ data from the California Integrated Water Quality System (CIWQS) assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan for the Los Angeles Region (page 3-45) states that: For waters designated WARM, water temperature shall not be altered by more than 5 °F above the natural temperature. At no time shall these WARM-designated waters be raised above 80 °F as a result of waste discharges. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | The samples were collected at 1 monitoring site: 658085 (RSW-001). | ||||
Temporal Representation: | The samples were collected between the dates of 2011-06-01 and 2020-10-12 | ||||
Environmental Conditions: | |||||
QAPP Information: | Los Angeles County Sanitation Districts. 2020. Los Angeles County Sanitation Districts Receiving Water Monitoring Program. | ||||
QAPP Information Reference(s): | Los Angeles County Sanitation Districts Receiving Water Monitoring Program | ||||
DECISION ID |
132571 |
Region 4 |
Coyote Creek |
||
Pollutant: | Thallium |
Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | New Decision |
Revision Status | Revised |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the CWA section 303(d) List in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. 0 of 75, 0 of 74 and 0 of 4 samples exceeded the CRITERIA and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because applicable water quality standards are not being exceeded. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 298316 | ||||
Pollutant: | Thallium | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed SWAMP RWB8 Monitoring data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Thallium. | ||||
Data Reference: | Field, Habitat, Toxicity, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan for the Los Angeles Region states that: Surface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | The USEPA Quality Criteria for Water (Gold Book) states that thallium chronic toxicity to one species of fish occurs at concentrations as low as 20 ug/L after 2,600 hours of exposure. (USEPA, 1986) | ||||
Guideline Reference: | Quality Criteria for Water 1986. United States Environmental Protection Agency. Office of Water. Regulations and Standards. Washington D.C. EPA 440/5-86-001. | ||||
Spatial Representation: | The samples were collected at 1 monitoring site: 845RB8633 (Coyote Creek Random Olsen Site 633). | ||||
Temporal Representation: | The samples were collected between the dates of 2013-07-08 and 2013-07-08 | ||||
Environmental Conditions: | |||||
QAPP Information: | SWRCB. 2018. This is a placeholder reference for data that 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. | ||||
|
|||||
LOE ID: | 298318 | ||||
Pollutant: | Thallium | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed San Gabriel River Regional Monitoring Program data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Thallium. | ||||
Data Reference: | Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan for the Los Angeles Region states that: Surface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | The USEPA Quality Criteria for Water (Gold Book) states that thallium chronic toxicity to one species of fish occurs at concentrations as low as 20 ug/L after 2,600 hours of exposure. (USEPA, 1986) | ||||
Guideline Reference: | Quality Criteria for Water 1986. United States Environmental Protection Agency. Office of Water. Regulations and Standards. Washington D.C. EPA 440/5-86-001. | ||||
Spatial Representation: | The samples were collected at 1 monitoring site: SMC01278_SGRRMP (SGLR01278_SGRRMP). | ||||
Temporal Representation: | The samples were collected between the dates of 2016-06-23 and 2016-06-23 | ||||
Environmental Conditions: | |||||
QAPP Information: | Aquatic Bioassay & Consulting Laboratories. 2019. San Gabriel River Regional Monitoring Program. | ||||
QAPP Information Reference(s): | San Gabriel River Regional Monitoring Program | ||||
|
|||||
LOE ID: | 298234 | ||||
Pollutant: | Thallium | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 37 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed eSMR_Long Beach WRP data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 37 samples exceeded the water quality threshold for Thallium. | ||||
Data Reference: | WQ data from the California Integrated Water Quality System (CIWQS) assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan for the Los Angeles Region states that: Surface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | The USEPA Quality Criteria for Water (Gold Book) states that thallium chronic toxicity to one species of fish occurs at concentrations as low as 20 ug/L after 2,600 hours of exposure. (USEPA, 1986) | ||||
Guideline Reference: | Quality Criteria for Water 1986. United States Environmental Protection Agency. Office of Water. Regulations and Standards. Washington D.C. EPA 440/5-86-001. | ||||
Spatial Representation: | The samples were collected at 1 monitoring site: 658085 (RSW-001). | ||||
Temporal Representation: | The samples were collected between the dates of 2011-07-11 and 2020-07-09 | ||||
Environmental Conditions: | |||||
QAPP Information: | Los Angeles County Sanitation Districts. 2020. Los Angeles County Sanitation Districts Receiving Water Monitoring Program. | ||||
QAPP Information Reference(s): | Los Angeles County Sanitation Districts Receiving Water Monitoring Program | ||||
|
|||||
LOE ID: | 298235 | ||||
Pollutant: | Thallium | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 37 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed eSMR_Long Beach WRP data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 37 samples exceeded the water quality threshold for Thallium. | ||||
Data Reference: | WQ data from the California Integrated Water Quality System (CIWQS) assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan for the Los Angeles Region states that: Surface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | The USEPA Quality Criteria for Water (Gold Book) states that thallium chronic toxicity to one species of fish occurs at concentrations as low as 20 ug/L after 2,600 hours of exposure. (USEPA, 1986) | ||||
Guideline Reference: | Quality Criteria for Water 1986. United States Environmental Protection Agency. Office of Water. Regulations and Standards. Washington D.C. EPA 440/5-86-001. | ||||
Spatial Representation: | The samples were collected at 1 monitoring site: 658086 (RSW-002). | ||||
Temporal Representation: | The samples were collected between the dates of 2011-07-11 and 2020-07-09 | ||||
Environmental Conditions: | |||||
QAPP Information: | Los Angeles County Sanitation Districts. 2020. Los Angeles County Sanitation Districts Receiving Water Monitoring Program. | ||||
QAPP Information Reference(s): | Los Angeles County Sanitation Districts Receiving Water Monitoring Program | ||||
|
|||||
LOE ID: | 298248 | ||||
Pollutant: | Thallium | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Not Recorded | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 37 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed eSMR_Long Beach WRP data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 37 samples exceeded the water quality threshold for Thallium. | ||||
Data Reference: | WQ data from the California Integrated Water Quality System (CIWQS) assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan for the Los Angeles Region states that: Surface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | The USEPA Quality Criteria for Water (Gold Book) states that thallium chronic toxicity to one species of fish occurs at concentrations as low as 20 ug/L after 2,600 hours of exposure. (USEPA, 1986) | ||||
Guideline Reference: | Quality Criteria for Water 1986. United States Environmental Protection Agency. Office of Water. Regulations and Standards. Washington D.C. EPA 440/5-86-001. | ||||
Spatial Representation: | The samples were collected at 1 monitoring site: 658086 (RSW-002). | ||||
Temporal Representation: | The samples were collected between the dates of 2011-07-11 and 2020-07-09 | ||||
Environmental Conditions: | |||||
QAPP Information: | Los Angeles County Sanitation Districts. 2020. Los Angeles County Sanitation Districts Receiving Water Monitoring Program. | ||||
QAPP Information Reference(s): | Los Angeles County Sanitation Districts Receiving Water Monitoring Program | ||||
|
|||||
LOE ID: | 298317 | ||||
Pollutant: | Thallium | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed San Gabriel River Regional Monitoring Program data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Thallium. | ||||
Data Reference: | Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan for the Los Angeles Region states that: Surface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | The USEPA Quality Criteria for Water (Gold Book) states that thallium chronic toxicity to one species of fish occurs at concentrations as low as 20 ug/L after 2,600 hours of exposure. (USEPA, 1986) | ||||
Guideline Reference: | Quality Criteria for Water 1986. United States Environmental Protection Agency. Office of Water. Regulations and Standards. Washington D.C. EPA 440/5-86-001. | ||||
Spatial Representation: | The samples were collected at 1 monitoring site: SMC01278_SGRRMP (SGLR01278_SGRRMP). | ||||
Temporal Representation: | The samples were collected between the dates of 2016-06-23 and 2016-06-23 | ||||
Environmental Conditions: | |||||
QAPP Information: | Aquatic Bioassay & Consulting Laboratories. 2019. San Gabriel River Regional Monitoring Program. | ||||
QAPP Information Reference(s): | San Gabriel River Regional Monitoring Program | ||||
|
|||||
LOE ID: | 298148 | ||||
Pollutant: | Thallium | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed LA County MS4 data for Pacific Ocean Shoreline, Aliso HSA, at Blue Lagoon to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Thallium. | ||||
Data Reference: | WQ data from the MS4 database assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan for the Los Angeles Region states that: Surface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | The USEPA Quality Criteria for Water (Gold Book) states that thallium chronic toxicity to one species of fish occurs at concentrations as low as 20 ug/L after 2,600 hours of exposure. (USEPA, 1986) | ||||
Guideline Reference: | Quality Criteria for Water 1986. United States Environmental Protection Agency. Office of Water. Regulations and Standards. Washington D.C. EPA 440/5-86-001. | ||||
Spatial Representation: | The samples were collected at 1 monitoring site: S13 (Coyote Creek @ Spring St. mass emission station). | ||||
Temporal Representation: | The samples were collected between the dates of 2015-12-14 and 2015-12-14 | ||||
Environmental Conditions: | |||||
QAPP Information: | Municipal Separate Storm Sewer System (MS4) | ||||
QAPP Information Reference(s): | Municipal Separate Storm Sewer System (MS4) | ||||
|
|||||
LOE ID: | 298149 | ||||
Pollutant: | Thallium | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed LA County MS4 data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Thallium. | ||||
Data Reference: | WQ data from the MS4 database assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan for the Los Angeles Region states that: Surface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | The USEPA Quality Criteria for Water (Gold Book) states that thallium chronic toxicity to one species of fish occurs at concentrations as low as 20 ug/L after 2,600 hours of exposure. (USEPA, 1986) | ||||
Guideline Reference: | Quality Criteria for Water 1986. United States Environmental Protection Agency. Office of Water. Regulations and Standards. Washington D.C. EPA 440/5-86-001. | ||||
Spatial Representation: | The samples were collected at 1 monitoring site: LSGR-S13 (Coyote Creek at Spring St). | ||||
Temporal Representation: | The samples were collected between the dates of 2015-12-14 and 2015-12-14 | ||||
Environmental Conditions: | |||||
QAPP Information: | Municipal Separate Storm Sewer System (MS4) | ||||
QAPP Information Reference(s): | Municipal Separate Storm Sewer System (MS4) | ||||
|
|||||
LOE ID: | 298247 | ||||
Pollutant: | Thallium | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Not Recorded | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 37 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed eSMR_Long Beach WRP data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 37 samples exceeded the water quality threshold for Thallium. | ||||
Data Reference: | WQ data from the California Integrated Water Quality System (CIWQS) assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan for the Los Angeles Region states that: Surface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | The USEPA Quality Criteria for Water (Gold Book) states that thallium chronic toxicity to one species of fish occurs at concentrations as low as 20 ug/L after 2,600 hours of exposure. (USEPA, 1986) | ||||
Guideline Reference: | Quality Criteria for Water 1986. United States Environmental Protection Agency. Office of Water. Regulations and Standards. Washington D.C. EPA 440/5-86-001. | ||||
Spatial Representation: | The samples were collected at 1 monitoring site: 658085 (RSW-001). | ||||
Temporal Representation: | The samples were collected between the dates of 2011-07-11 and 2020-07-09 | ||||
Environmental Conditions: | |||||
QAPP Information: | Los Angeles County Sanitation Districts. 2020. Los Angeles County Sanitation Districts Receiving Water Monitoring Program. | ||||
QAPP Information Reference(s): | Los Angeles County Sanitation Districts Receiving Water Monitoring Program | ||||
DECISION ID |
132572 |
Region 4 |
Coyote Creek |
||
Pollutant: | Toxaphene |
Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | Do Not List on 303(d) list (TMDL required list)(2018) |
Revision Status | Revised |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded. |
|
|||||
LOE ID: | 83876 | ||||
Pollutant: | Toxaphene | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 0 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Since the criteria is smaller than the reporting limit and method detection limit, none of samples can be counted. | ||||
Data Reference: | Data for Various Pollutants in Various Water Bodies in Sanitation Districts of Los Angeles County, 2005-2010. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Los Angeles Region Basin Plan objective is "No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses." | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | Criteria Continuous Concentration (4-day Average) is 0.0002 ug/L. | ||||
Guideline 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 | ||||
Spatial Representation: | Two samples were collected from Coyote creek at locations SGR_LB_RSW-001 and SGR_LB_RSW-002. The location descriptions are: Long Beach Station RSW-001 (RA-1) and Long Beach Station RSW-002 (RA) | ||||
Temporal Representation: | One water sample from each location was collected in 1/11/2010. | ||||
Environmental Conditions: | There was no special environmental conditions reported with data. | ||||
QAPP Information: | An excel spreadsheet of laboratory information called "LIMS" which gave reporting limits for each analyte evaluated accompanied each data package. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 298252 | ||||
Pollutant: | Toxaphene | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Not Recorded | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 0 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed eSMR_Long Beach WRP data for Coyote Creek to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Toxaphene. Although a total of 19 samples were collected, 19 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5. | ||||
Data Reference: | WQ data from the California Integrated Water Quality System (CIWQS) assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The toxaphene criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is 0.0002 ug/L (California Toxics Rule, 2000). | ||||
Objective/Criterion Reference: | 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: | The samples were collected at 1 monitoring site: 658086 (RSW-002). | ||||
Temporal Representation: | Data for this waterbody were collected over the date range 2011-07-11 to 2020-07-09 | ||||
Environmental Conditions: | |||||
QAPP Information: | Los Angeles County Sanitation Districts. 2020. Los Angeles County Sanitation Districts Receiving Water Monitoring Program. | ||||
QAPP Information Reference(s): | Los Angeles County Sanitation Districts Receiving Water Monitoring Program | ||||
|
|||||
LOE ID: | 298236 | ||||
Pollutant: | Toxaphene | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Not Recorded | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 0 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed eSMR_Long Beach WRP data for Coyote Creek to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Toxaphene. Although a total of 19 samples were collected, 19 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5. | ||||
Data Reference: | WQ data from the California Integrated Water Quality System (CIWQS) assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The toxaphene criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is 0.0002 ug/L (California Toxics Rule, 2000). | ||||
Objective/Criterion Reference: | 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: | The samples were collected at 1 monitoring site: 658085 (RSW-001). | ||||
Temporal Representation: | Data for this waterbody were collected over the date range 2011-07-11 to 2020-07-09 | ||||
Environmental Conditions: | |||||
QAPP Information: | Los Angeles County Sanitation Districts. 2020. Los Angeles County Sanitation Districts Receiving Water Monitoring Program. | ||||
QAPP Information Reference(s): | Los Angeles County Sanitation Districts Receiving Water Monitoring Program | ||||
DECISION ID |
132574 |
Region 4 |
Coyote Creek |
||
Pollutant: | Turbidity |
Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | New Decision |
Revision Status | Revised |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | 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. 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. 2 of 224 and 0 of 7 samples exceeded the OBJECTIVE and this does not exceed the allowable frequency listed in Table 3.2 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because applicable water quality standards are not being exceeded. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 298319 | ||||
Pollutant: | Turbidity | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed SWAMP RWB8 Monitoring data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Turbidity. | ||||
Data Reference: | Field, Habitat, Toxicity, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan for the Los Angeles Region states that: Waters shall be free of changes in turbidity that cause nuisance or adversely affect beneficial uses. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | Turbidities of 40 NTU or greater can cause a reduced foraging efficiency and a shift in prey selection in piscivorous fish (largemouth bass) due to interference with their ability to find prey (Shoup, D.E. and Wahl D.H., 2009). | ||||
Guideline Reference: | The Effects of Turbidity on Prey Selection by Piscivorous Largemouth Bass | ||||
Spatial Representation: | The samples were collected at 1 monitoring site: 845CTC480 (Coyote Creek Random Olsen Site 480). | ||||
Temporal Representation: | The samples were collected between the dates of 2012-06-19 and 2012-06-19 | ||||
Environmental Conditions: | |||||
QAPP Information: | SWRCB. 2018. This is a placeholder reference for data that 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. | ||||
|
|||||
LOE ID: | 298254 | ||||
Pollutant: | Turbidity | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Not Recorded | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 112 | ||||
Number of Exceedances: | 1 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed eSMR_Long Beach WRP data for Coyote Creek to determine beneficial use support and results are as follows: 1 of 112 samples exceeded the water quality threshold for Turbidity. | ||||
Data Reference: | WQ data from the California Integrated Water Quality System (CIWQS) assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan for the Los Angeles Region states that: Waters shall be free of changes in turbidity that cause nuisance or adversely affect beneficial uses. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | Turbidities of 40 NTU or greater can cause a reduced foraging efficiency and a shift in prey selection in piscivorous fish (largemouth bass) due to interference with their ability to find prey (Shoup, D.E. and Wahl D.H., 2009). | ||||
Guideline Reference: | The Effects of Turbidity on Prey Selection by Piscivorous Largemouth Bass | ||||
Spatial Representation: | The samples were collected at 1 monitoring site: 658086 (RSW-002). | ||||
Temporal Representation: | The samples were collected between the dates of 2011-06-01 and 2020-09-16 | ||||
Environmental Conditions: | |||||
QAPP Information: | Los Angeles County Sanitation Districts. 2020. Los Angeles County Sanitation Districts Receiving Water Monitoring Program. | ||||
QAPP Information Reference(s): | Los Angeles County Sanitation Districts Receiving Water Monitoring Program | ||||
|
|||||
LOE ID: | 298255 | ||||
Pollutant: | Turbidity | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Not Recorded | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 112 | ||||
Number of Exceedances: | 1 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed eSMR_Long Beach WRP data for Coyote Creek to determine beneficial use support and results are as follows: 1 of 112 samples exceeded the water quality threshold for Turbidity. | ||||
Data Reference: | WQ data from the California Integrated Water Quality System (CIWQS) assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan for the Los Angeles Region states that: Waters shall be free of changes in turbidity that cause nuisance or adversely affect beneficial uses. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | Turbidities of 40 NTU or greater can cause a reduced foraging efficiency and a shift in prey selection in piscivorous fish (largemouth bass) due to interference with their ability to find prey (Shoup, D.E. and Wahl D.H., 2009). | ||||
Guideline Reference: | The Effects of Turbidity on Prey Selection by Piscivorous Largemouth Bass | ||||
Spatial Representation: | The samples were collected at 1 monitoring site: 658085 (RSW-001). | ||||
Temporal Representation: | The samples were collected between the dates of 2011-06-01 and 2020-09-16 | ||||
Environmental Conditions: | |||||
QAPP Information: | Los Angeles County Sanitation Districts. 2020. Los Angeles County Sanitation Districts Receiving Water Monitoring Program. | ||||
QAPP Information Reference(s): | Los Angeles County Sanitation Districts Receiving Water Monitoring Program | ||||
|
|||||
LOE ID: | 298145 | ||||
Pollutant: | Turbidity | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 2 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed LA County MS4 data for Pacific Ocean Shoreline, Aliso HSA, at Blue Lagoon to determine beneficial use support and results are as follows: 0 of 2 samples exceeded the water quality threshold for Turbidity. | ||||
Data Reference: | WQ data from the MS4 database assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan for the Los Angeles Region states that: Waters shall be free of changes in turbidity that cause nuisance or adversely affect beneficial uses. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | Turbidities of 40 NTU or greater can cause a reduced foraging efficiency and a shift in prey selection in piscivorous fish (largemouth bass) due to interference with their ability to find prey (Shoup, D.E. and Wahl D.H., 2009). | ||||
Guideline Reference: | The Effects of Turbidity on Prey Selection by Piscivorous Largemouth Bass | ||||
Spatial Representation: | The samples were collected at 1 monitoring site: S13 (Coyote Creek @ Spring St. mass emission station). | ||||
Temporal Representation: | The samples were collected between the dates of 2015-07-29 and 2015-12-14 | ||||
Environmental Conditions: | |||||
QAPP Information: | Municipal Separate Storm Sewer System (MS4) | ||||
QAPP Information Reference(s): | Municipal Separate Storm Sewer System (MS4) | ||||
|
|||||
LOE ID: | 298320 | ||||
Pollutant: | Turbidity | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 2 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed San Gabriel River Regional Monitoring Program data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 2 samples exceeded the water quality threshold for Turbidity. | ||||
Data Reference: | Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan for the Los Angeles Region states that: Waters shall be free of changes in turbidity that cause nuisance or adversely affect beneficial uses. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | Turbidities of 40 NTU or greater can cause a reduced foraging efficiency and a shift in prey selection in piscivorous fish (largemouth bass) due to interference with their ability to find prey (Shoup, D.E. and Wahl D.H., 2009). | ||||
Guideline Reference: | The Effects of Turbidity on Prey Selection by Piscivorous Largemouth Bass | ||||
Spatial Representation: | The samples were collected at 1 monitoring site: SMC01278_SGRRMP (SGLR01278_SGRRMP). | ||||
Temporal Representation: | The samples were collected between the dates of 2016-06-23 and 2017-07-19 | ||||
Environmental Conditions: | |||||
QAPP Information: | Aquatic Bioassay & Consulting Laboratories. 2019. San Gabriel River Regional Monitoring Program. | ||||
QAPP Information Reference(s): | San Gabriel River Regional Monitoring Program | ||||
|
|||||
LOE ID: | 298147 | ||||
Pollutant: | Turbidity | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 2 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed LA County MS4 data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 2 samples exceeded the water quality threshold for Turbidity. | ||||
Data Reference: | WQ data from the MS4 database assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan for the Los Angeles Region states that: Waters shall be free of changes in turbidity that cause nuisance or adversely affect beneficial uses. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | Turbidities of 40 NTU or greater can cause a reduced foraging efficiency and a shift in prey selection in piscivorous fish (largemouth bass) due to interference with their ability to find prey (Shoup, D.E. and Wahl D.H., 2009). | ||||
Guideline Reference: | The Effects of Turbidity on Prey Selection by Piscivorous Largemouth Bass | ||||
Spatial Representation: | The samples were collected at 1 monitoring site: LSGR-S13 (Coyote Creek at Spring St). | ||||
Temporal Representation: | The samples were collected between the dates of 2015-07-29 and 2015-12-14 | ||||
Environmental Conditions: | |||||
QAPP Information: | Municipal Separate Storm Sewer System (MS4) | ||||
QAPP Information Reference(s): | Municipal Separate Storm Sewer System (MS4) | ||||
DECISION ID |
132546 |
Region 4 |
Coyote Creek |
||
Pollutant: | alpha-Endosulfan (Endosulfan 1) |
Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | New Decision |
Revision Status | Revised |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the CWA section 303(d) List in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. 0 of 38 samples exceeded the CRITERIA and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because applicable water quality standards are not being exceeded. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 298202 | ||||
Pollutant: | alpha-Endosulfan (Endosulfan 1) | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Not Recorded | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 19 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed eSMR_Long Beach WRP data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 19 samples exceeded the water quality threshold for Endosulfan I. | ||||
Data Reference: | WQ data from the California Integrated Water Quality System (CIWQS) assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The endosulfan I (alpha-endosulfan) criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is 0.056 ug/L (California Toxics Rule, 2000). | ||||
Objective/Criterion Reference: | 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: | The samples were collected at 1 monitoring site: 658086 (RSW-002). | ||||
Temporal Representation: | The samples were collected between the dates of 2011-07-11 and 2020-07-09 | ||||
Environmental Conditions: | |||||
QAPP Information: | Los Angeles County Sanitation Districts. 2020. Los Angeles County Sanitation Districts Receiving Water Monitoring Program. | ||||
QAPP Information Reference(s): | Los Angeles County Sanitation Districts Receiving Water Monitoring Program | ||||
|
|||||
LOE ID: | 298190 | ||||
Pollutant: | alpha-Endosulfan (Endosulfan 1) | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Not Recorded | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 19 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed eSMR_Long Beach WRP data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 19 samples exceeded the water quality threshold for Endosulfan I. | ||||
Data Reference: | WQ data from the California Integrated Water Quality System (CIWQS) assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The endosulfan I (alpha-endosulfan) criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is 0.056 ug/L (California Toxics Rule, 2000). | ||||
Objective/Criterion Reference: | 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: | The samples were collected at 1 monitoring site: 658085 (RSW-001). | ||||
Temporal Representation: | The samples were collected between the dates of 2011-07-11 and 2020-07-09 | ||||
Environmental Conditions: | |||||
QAPP Information: | Los Angeles County Sanitation Districts. 2020. Los Angeles County Sanitation Districts Receiving Water Monitoring Program. | ||||
QAPP Information Reference(s): | Los Angeles County Sanitation Districts Receiving Water Monitoring Program | ||||
DECISION ID |
132564 |
Region 4 |
Coyote Creek |
||
Pollutant: | beta-Endosulfan (Endosulfan 2) |
Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | New Decision |
Revision Status | Revised |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the CWA section 303(d) List in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. 0 of 38 samples exceeded the CRITERIA and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because applicable water quality standards are not being exceeded. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 298195 | ||||
Pollutant: | beta-Endosulfan (Endosulfan 2) | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Not Recorded | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 19 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed eSMR_Long Beach WRP data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 19 samples exceeded the water quality threshold for Endosulfan II. | ||||
Data Reference: | WQ data from the California Integrated Water Quality System (CIWQS) assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The endosulfan II (beta-endosulfan) criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is 0.056 ug/L (California Toxics Rule, 2000). | ||||
Objective/Criterion Reference: | 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: | The samples were collected at 1 monitoring site: 658085 (RSW-001). | ||||
Temporal Representation: | The samples were collected between the dates of 2011-07-11 and 2020-07-09 | ||||
Environmental Conditions: | |||||
QAPP Information: | Los Angeles County Sanitation Districts. 2020. Los Angeles County Sanitation Districts Receiving Water Monitoring Program. | ||||
QAPP Information Reference(s): | Los Angeles County Sanitation Districts Receiving Water Monitoring Program | ||||
|
|||||
LOE ID: | 298192 | ||||
Pollutant: | beta-Endosulfan (Endosulfan 2) | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Not Recorded | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 19 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed eSMR_Long Beach WRP data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 19 samples exceeded the water quality threshold for Endosulfan II. | ||||
Data Reference: | WQ data from the California Integrated Water Quality System (CIWQS) assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The endosulfan II (beta-endosulfan) criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is 0.056 ug/L (California Toxics Rule, 2000). | ||||
Objective/Criterion Reference: | 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: | The samples were collected at 1 monitoring site: 658086 (RSW-002). | ||||
Temporal Representation: | The samples were collected between the dates of 2011-07-11 and 2020-07-09 | ||||
Environmental Conditions: | |||||
QAPP Information: | Los Angeles County Sanitation Districts. 2020. Los Angeles County Sanitation Districts Receiving Water Monitoring Program. | ||||
QAPP Information Reference(s): | Los Angeles County Sanitation Districts Receiving Water Monitoring Program | ||||
DECISION ID |
153901 |
Region 4 |
Coyote Creek |
||
Pollutant: | Aluminum |
Final Listing Decision: | List on 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | Do Not List on 303(d) list (TMDL required list)(2018) |
Revision Status | Revised |
Sources: | A Source Unknown |
Expected TMDL Completion Date: | 2037 |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | During the 2024 cycle, the 1988 National Recommended Water Quality Criteria used to assess aluminum data was replaced with U.S. EPA’s 2018 Final Recommended Aquatic Life Criteria for Aluminum in Freshwater. This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status. 8 lines of evidence are available in the administrative record to assess this pollutant. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification in favor of placing this water segment-pollutant combination on the CWA section 303(d) List. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. 0 of 22 and 15 of 27 samples exceed the evaluation guideline in water and this exceeds the allowable frequency listed in Table 3.1 of the Listing Policy for warm freshwater habitat. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. LOE 83883 was not reassessed and remove due to the data not meeting QA/QC standards. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should be placed on the section 303(d) list because applicable water quality standards are exceeded and a pollutant contributes to or causes the problem. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 314819 | ||||
Pollutant: | Aluminum | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed San Gabriel River Regional Monitoring Program data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Aluminum. | ||||
Data Reference: | Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan for the Los Angeles Region states that: Surface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | The aluminum criterion for the protection of aquatic life, is pH, total hardness, and dissolved organic carbon (DOC) dependent. When total hardness or DOC data were not available, default values based on the level III ecoregions developed by U.S EPA were substituted (EPA, 2018). When pH data were not available, the median pH value for the ecoregion, a pH value from a comparable waterbody, or a pH value from a local study in the same waterbody was used as a comparable surrogate. | ||||
Guideline Reference: | Final Aquatic Life Ambient Water Quality Criteria for Aluminum. EPA-822-R-18-001. Washington, D.C.: Office of Water, USEPA. | ||||
Spatial Representation: | The samples were collected at 1 monitoring site: SMC01278_SGRRMP (SGLR01278_SGRRMP). | ||||
Temporal Representation: | The samples were collected between the dates of 2016-06-23 and 2016-06-23 | ||||
Environmental Conditions: | |||||
QAPP Information: | Aquatic Bioassay & Consulting Laboratories. 2019. San Gabriel River Regional Monitoring Program. | ||||
QAPP Information Reference(s): | San Gabriel River Regional Monitoring Program | ||||
|
|||||
LOE ID: | 315165 | ||||
Pollutant: | Aluminum | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 23 | ||||
Number of Exceedances: | 13 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed Los Angeles County Flood Control District_2010 data for Coyote Creek to determine beneficial use support and results are as follows: 13 of 23 samples exceeded the water quality threshold for Aluminum. | ||||
Data Reference: | Data for Various Pollutants in Los Angeles County Flood Control District, 2006-2010. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan for the Los Angeles Region states that: Surface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | The aluminum criterion for the protection of aquatic life, is pH, total hardness, and dissolved organic carbon (DOC) dependent. When total hardness or DOC data were not available, default values based on the level III ecoregions developed by U.S EPA were substituted (EPA, 2018). When pH data were not available, the median pH value for the ecoregion, a pH value from a comparable waterbody, or a pH value from a local study in the same waterbody was used as a comparable surrogate. | ||||
Guideline Reference: | Final Aquatic Life Ambient Water Quality Criteria for Aluminum. EPA-822-R-18-001. Washington, D.C.: Office of Water, USEPA. | ||||
Spatial Representation: | The samples were collected at 1 monitoring site: S13 (Coyote Creek @ Spring St. mass emission station). | ||||
Temporal Representation: | The samples were collected between the dates of 2007-02-10 and 2010-03-23 | ||||
Environmental Conditions: | |||||
QAPP Information: | Data was previously assessed without a QAPP. Data reassessed without a QAPP for consistency. | ||||
QAPP Information Reference(s): | This is a placeholder for previously assessed data that does not have quality assurance information but would require it under newly developed policies. These LOEs were previously assessed and approved at the Regional, State and Federal level in past cycles. The LOEs needed to be moved and/or reassessed but required this reference code for movement within the decision making database. | ||||
|
|||||
LOE ID: | 314833 | ||||
Pollutant: | Aluminum | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed SWAMP RWB8 Monitoring data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Aluminum. | ||||
Data Reference: | Field, Habitat, Toxicity, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan for the Los Angeles Region states that: Surface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | The aluminum criterion for the protection of aquatic life, is pH, total hardness, and dissolved organic carbon (DOC) dependent. When total hardness or DOC data were not available, default values based on the level III ecoregions developed by U.S EPA were substituted (EPA, 2018). When pH data were not available, the median pH value for the ecoregion, a pH value from a comparable waterbody, or a pH value from a local study in the same waterbody was used as a comparable surrogate. | ||||
Guideline Reference: | Final Aquatic Life Ambient Water Quality Criteria for Aluminum. EPA-822-R-18-001. Washington, D.C.: Office of Water, USEPA. | ||||
Spatial Representation: | The samples were collected at 1 monitoring site: 845RB8633 (Coyote Creek Random Olsen Site 633). | ||||
Temporal Representation: | The samples were collected between the dates of 2013-07-08 and 2013-07-08 | ||||
Environmental Conditions: | |||||
QAPP Information: | SWRCB. 2018. This is a placeholder reference for data that 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. | ||||
|
|||||
LOE ID: | 314826 | ||||
Pollutant: | Aluminum | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 1 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed LA County MS4 data for Pacific Ocean Shoreline, Aliso HSA, at Blue Lagoon to determine beneficial use support and results are as follows: 1 of 1 samples exceeded the water quality threshold for Aluminum. | ||||
Data Reference: | WQ data from the MS4 database assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan for the Los Angeles Region states that: Surface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | The aluminum criterion for the protection of aquatic life, is pH, total hardness, and dissolved organic carbon (DOC) dependent. When total hardness or DOC data were not available, default values based on the level III ecoregions developed by U.S EPA were substituted (EPA, 2018). When pH data were not available, the median pH value for the ecoregion, a pH value from a comparable waterbody, or a pH value from a local study in the same waterbody was used as a comparable surrogate. | ||||
Guideline Reference: | Final Aquatic Life Ambient Water Quality Criteria for Aluminum. EPA-822-R-18-001. Washington, D.C.: Office of Water, USEPA. | ||||
Spatial Representation: | The samples were collected at 1 monitoring site: S13 (Coyote Creek @ Spring St. mass emission station). | ||||
Temporal Representation: | The samples were collected between the dates of 2015-12-14 and 2015-12-14 | ||||
Environmental Conditions: | |||||
QAPP Information: | Municipal Separate Storm Sewer System (MS4) | ||||
QAPP Information Reference(s): | Municipal Separate Storm Sewer System (MS4) | ||||
|
|||||
LOE ID: | 314853 | ||||
Pollutant: | Aluminum | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed San Gabriel River Regional Monitoring Program data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Aluminum. | ||||
Data Reference: | Field, Habitat, Tissue, WQ data from the California Environmental Data Exchange Network assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan for the Los Angeles Region states that: Surface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | The aluminum criterion for the protection of aquatic life, is pH, total hardness, and dissolved organic carbon (DOC) dependent. When total hardness or DOC data were not available, default values based on the level III ecoregions developed by U.S EPA were substituted (EPA, 2018). When pH data were not available, the median pH value for the ecoregion, a pH value from a comparable waterbody, or a pH value from a local study in the same waterbody was used as a comparable surrogate. | ||||
Guideline Reference: | Final Aquatic Life Ambient Water Quality Criteria for Aluminum. EPA-822-R-18-001. Washington, D.C.: Office of Water, USEPA. | ||||
Spatial Representation: | The samples were collected at 1 monitoring site: SMC01278_SGRRMP (SGLR01278_SGRRMP). | ||||
Temporal Representation: | The samples were collected between the dates of 2016-06-23 and 2016-06-23 | ||||
Environmental Conditions: | |||||
QAPP Information: | Aquatic Bioassay & Consulting Laboratories. 2019. San Gabriel River Regional Monitoring Program. | ||||
QAPP Information Reference(s): | San Gabriel River Regional Monitoring Program | ||||
|
|||||
LOE ID: | 314872 | ||||
Pollutant: | Aluminum | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 1 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed LA County MS4 data for Coyote Creek to determine beneficial use support and results are as follows: 1 of 1 samples exceeded the water quality threshold for Aluminum. | ||||
Data Reference: | WQ data from the MS4 database assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan for the Los Angeles Region states that: Surface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | The aluminum criterion for the protection of aquatic life, is pH, total hardness, and dissolved organic carbon (DOC) dependent. When total hardness or DOC data were not available, default values based on the level III ecoregions developed by U.S EPA were substituted (EPA, 2018). When pH data were not available, the median pH value for the ecoregion, a pH value from a comparable waterbody, or a pH value from a local study in the same waterbody was used as a comparable surrogate. | ||||
Guideline Reference: | Final Aquatic Life Ambient Water Quality Criteria for Aluminum. EPA-822-R-18-001. Washington, D.C.: Office of Water, USEPA. | ||||
Spatial Representation: | The samples were collected at 1 monitoring site: LSGR-S13 (Coyote Creek at Spring St). | ||||
Temporal Representation: | The samples were collected between the dates of 2015-12-14 and 2015-12-14 | ||||
Environmental Conditions: | |||||
QAPP Information: | Municipal Separate Storm Sewer System (MS4) | ||||
QAPP Information Reference(s): | Municipal Separate Storm Sewer System (MS4) | ||||
|
|||||
LOE ID: | 315164 | ||||
Pollutant: | Aluminum | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 21 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed Los Angeles County Flood Control District_2010 data for Coyote Creek to determine beneficial use support and results are as follows: 0 of 21 samples exceeded the water quality threshold for Aluminum. | ||||
Data Reference: | Data for Various Pollutants in Los Angeles County Flood Control District, 2006-2010. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan for the Los Angeles Region states that: Surface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | The aluminum criterion for the protection of aquatic life, is pH, total hardness, and dissolved organic carbon (DOC) dependent. When total hardness or DOC data were not available, default values based on the level III ecoregions developed by U.S EPA were substituted (EPA, 2018). When pH data were not available, the median pH value for the ecoregion, a pH value from a comparable waterbody, or a pH value from a local study in the same waterbody was used as a comparable surrogate. | ||||
Guideline Reference: | Final Aquatic Life Ambient Water Quality Criteria for Aluminum. EPA-822-R-18-001. Washington, D.C.: Office of Water, USEPA. | ||||
Spatial Representation: | The samples were collected at 1 monitoring site: S13 (Coyote Creek @ Spring St. mass emission station). | ||||
Temporal Representation: | The samples were collected between the dates of 2007-02-10 and 2010-03-23 | ||||
Environmental Conditions: | |||||
QAPP Information: | Data was previously assessed without a QAPP. Data reassessed without a QAPP for consistency. | ||||
QAPP Information Reference(s): | This is a placeholder for previously assessed data that does not have quality assurance information but would require it under newly developed policies. These LOEs were previously assessed and approved at the Regional, State and Federal level in past cycles. The LOEs needed to be moved and/or reassessed but required this reference code for movement within the decision making database. | ||||
|
|||||
LOE ID: | 2437 | ||||
Pollutant: | Aluminum | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Preservation of Rare & Endangered Species | ||||
Number of Samples: | 0 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | There are 21 samples available but there is no applicable water quality standard available with which to assess them (LACDPW, 2004). | ||||
Data Reference: | Placeholder reference 2006 303(d) | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | There is no applicable water quality standard for this pollutant in this water body for the assigned beneficial use(s). | ||||
Objective/Criterion Reference: | Placeholder reference 2006 303(d) | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | The Coyote Creek Monitoring Station (S13) is located at the existing ACOE stream gauge station (Stream Gauge No. F354-R) below Spring Street in the lower San Gabriel River watershed. The site assists in determining mass loading for the San Gabriel River watershed. At this location, the upstream tributary area is 150 square miles (extending into Orange County). The sampling site was chosen to avoid backwater effects from the San Gabriel River. Coyote Creek, at the gauging station, is a concrete lined trapezoidal channel. The Coyote Creek sampling location has been an active stream gauging station since 1963. | ||||
Temporal Representation: | Twenty-one samples where taken during the wet and dry season from 10/12/00 to 4/30/03 at approximately one to two week intervals as part of the Los Angeles County Storm water monitoring program prepared by the Los Angeles County Department of Public Works. | ||||
Environmental Conditions: | |||||
QAPP Information: | Evaluation of Analytes and QA/QC Specifications for Monitoring Program (Woodward-Clyde, 1996) Los Angeles County Department of Public Works. | ||||
QAPP Information Reference(s): | |||||
DECISION ID |
132541 |
Region 4 |
Coyote Creek |
||
Pollutant: | Chlorine |
Final Listing Decision: | List on 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | New Decision |
Revision Status | Revised |
Sources: | A Source Unknown |
Expected TMDL Completion Date: | 2037 |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.2 of the Listing Policy. Under section 3.2 a single line of evidence is necessary to assess listing status. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification in favor of placing this water segment-pollutant combination on the CWA section 303(d) List. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. 10 of 10 samples exceed the evaluation guideline and this exceeds the allowable frequency listed in Table 3.2 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should be placed on the section 303(d) list because applicable water quality standards are exceeded and a pollutant contributes to or causes the problem. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
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LOE ID: | 298175 | ||||
Pollutant: | Chlorine | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Not Recorded | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 7 | ||||
Number of Exceedances: | 7 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed eSMR_Long Beach WRP data for Coyote Creek to determine beneficial use support and the results are as follows: 7 of the 7 samples exceeded the water quality threshold for Chlorine, Total Residual. Although a total of 149 samples were collected, 142 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5. | ||||
Data Reference: | WQ data from the California Integrated Water Quality System (CIWQS) assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan for the Los Angeles Region states that: Chlorine residual shall not be present in surface water any concentration that causes impairment of beneficial uses. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | The USEPA recommended chlorine criterion for the protection of aquatic ife in freshwater is 11 ug/L (4-day average). | ||||
Guideline Reference: | National Recommended Water Quality Criteria. United States Environmental Protection Agency. Office of Water. Current as of 08/03/2016. | ||||
Spatial Representation: | The samples were collected at 1 monitoring site (658085). | ||||
Temporal Representation: | Data for this waterbody was collected over the date range 2011-06-01 to 2020-07-06 | ||||
Environmental Conditions: | |||||
QAPP Information: | Los Angeles County Sanitation Districts. 2020. Los Angeles County Sanitation Districts Receiving Water Monitoring Program. | ||||
QAPP Information Reference(s): | Los Angeles County Sanitation Districts Receiving Water Monitoring Program | ||||
|
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LOE ID: | 298174 | ||||
Pollutant: | Chlorine | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Not Recorded | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 3 | ||||
Number of Exceedances: | 3 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed eSMR_Long Beach WRP data for Coyote Creek to determine beneficial use support and the results are as follows: 3 of the 3 samples exceeded the water quality threshold for Chlorine, Total Residual. Although a total of 162 samples were collected, 159 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5. | ||||
Data Reference: | WQ data from the California Integrated Water Quality System (CIWQS) assembled for the 2024 Integrated Report in Region 4. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan for the Los Angeles Region states that: Chlorine residual shall not be present in surface water any concentration that causes impairment of beneficial uses. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | The USEPA recommended chlorine criterion for the protection of aquatic ife in freshwater is 11 ug/L (4-day average). | ||||
Guideline Reference: | National Recommended Water Quality Criteria. United States Environmental Protection Agency. Office of Water. Current as of 08/03/2016. | ||||
Spatial Representation: | The samples were collected at 1 monitoring site (658086). | ||||
Temporal Representation: | Data for this waterbody was collected over the date range 2011-06-01 to 2020-04-24 | ||||
Environmental Conditions: | |||||
QAPP Information: | Los Angeles County Sanitation Districts. 2020. Los Angeles County Sanitation Districts Receiving Water Monitoring Program. | ||||
QAPP Information Reference(s): | Los Angeles County Sanitation Districts Receiving Water Monitoring Program | ||||
DECISION ID |
69031 |
Region 4 |
Coyote Creek |
||
Pollutant: | Abnormal Fish Histology (Lesions) |
Final Listing Decision: | Delist from 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | Delist from 303(d) list (TMDL required list)(2016) |
Revision Status | Original |
Reason for Delisting: | Flaws in original listing |
Impairment from Pollutant or Pollution: | Pollution |
Regional Board Conclusion: | This water quality condition is being considered for delisting under sections 4.8 of the Listing Policy. A single line of evidence (3.8) documenting adverse biological response measured in resident individuals in water can be listed when these impacts are associated with specific pollutant concentrations.
Two lines of evidence are available in the administrative record to assess this condition, none of which associate these impacts with a pollutant. Based on numeric and descriptive data, it appears that fish below the Coyote Creek Waste Reclamation Plant outfall below Willow Street show evidence of tissue alteration, which is higher in prevalence and more severe than at other sites. Although evidence is accumulating indicating that metals and some organics interfere with the immune system of the resident organisms, the association has not yet been established. Therefore, at this time it is not possible to directly attribute this infectious process to toxicity or pollutant concentrations. The weight of evidence indicates that there is sufficient justification in favor of removing this water segment-pollutant combination from the section 303(d) list in the Water Quality Limited Segments category. Although, adverse biological responses have been documented these impacts have not been associated with toxicity or pollutant concentrations. 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. Observations indicated some impacts but there is nothing in the administrative record associating these impacts to toxicity or pollutant concentrations. 4. Pursuant to section 4.11 of the Listing Policy, no additional data and information are available indicating that standards are met. |
Regional Board Decision Recommendation: | This is a decision previously approved by the State Water Resources Control Board and the USEPA. No new data were assessed by the Regional Board for the current. 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: | 2443 | ||||
Pollutant: | Abnormal Fish Histology (Lesions) | ||||
LOE Subgroup: | Narrative Description Data | ||||
Matrix: | Not Specified | ||||
Fraction: | None | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 0 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | Not Specified | ||||
Data Used to Assess Water Quality: | This evaluation of data came from the report: "Toxicity study of the Santa Clara, San Gabriel River, and Calleguas Creek" (Bailey et al., 1996 in LACSD, 2004b).In the fish from the downstream site of Coyote Creek below the outfall, a higher percentage showed inflammation of the trigeminal nerve. Also, necrosis of mitochondria-rich (chloride) cells and pavement epithelium of secondary lamellae were seen. Gills of fish from contaminated sites have been shown to contain various lesions and necrosis in the above cell types is a common finding. Also, kidney tubular epithelial cell degeneration was present at higher prevalence than at the upstream site. Taken together, it would appear that fish below the outfall show evidence of tissue alteration, which is higher in prevalence and more severe than at other sites. Clearly, these fish are not normal and would likely be susceptible to additional stress from deteriorating water quality.
Inflammatory foci of both eye and the fifth cranial or the trigeminal nerve were prominent findings in fish collected from Coyote Creek above the outfall at Willow Street. It would be impossible to directly attribute this infectious process to toxicity. However, evidence is accumulating which indicates that metals and some organics such as polychlorinated biphenyls interfere with the immune system of the host. With a compromise in the immune system, parasites and bacteria may establish infestation. It is possible that the infectious lesions of eye and trigeminal nerve reflect prior immunoincompetence. An additional finding was inflammation of the liver in penhepatic venous sites. This condition could have followed prior hepatocyte necrosis. Even if the inflammation was not associated with contaminants, the fact that a sizeable fraction (25%) of the fish examined showed disease, indicates that the fish are compromised and would likely be endangered further by deterioration of water quality. |
||||
Data Reference: | Placeholder reference 2006 303(d) | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | |||||
Objective/Criterion Reference: | |||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | |||||
Temporal Representation: | |||||
Environmental Conditions: | |||||
QAPP Information: | QA Info Missing | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 2444 | ||||
Pollutant: | Abnormal Fish Histology (Lesions) | ||||
LOE Subgroup: | Adverse Biological Responses | ||||
Matrix: | -N/A | ||||
Fraction: | None | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 0 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | Not Specified | ||||
Data Used to Assess Water Quality: | Coyote Creek Above Outfall at Willow Street (LACSD, 2004b):
Fish collected at this site included 19 Tilapia (Tilapia sp.) and 3 Gambusia affinis. Optical nerve damage was observed in these fish. A 5% frequency of gill parasitism was observed. Inflammation of the gill and adjacent bronchial cavity wall was seen at 27% incidence. Within livers, 3 of the 22 individuals showed inflammation and necrosis (a 14% frequency). Coyote Creek Below the Outfall (LACSP, 2004b): Fifteen Tilapia fish were collected from this site. When the head region of one of these fish was sectioned in a parasagittal plane, various organs could be identified and analyzed. Inflammation of the eye was observed in one fish. However, the same type of inflammation much more frequently observed in nerve tissue (73% frequency). In the gill, no parasites were observed. However, necrosis of certain types of cells was seen with a 33% frequency. The livers of these fish were free of alterations. In addition, there were no adhesions, granuloma, or other inflammation. Degeneration of kidney cells was seen at high frequency (60%). |
||||
Data Reference: | Placeholder reference 2006 303(d) | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Basin Plan: All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological response in, human, plant, animal, or aquatic life. Compliance with this objective will be determined by use of indicator organisms, analyses of species diversity, population density, growth anomalies, bioassays of appropriate duration or other appropriate methods as specified by the State or Regional Board. | ||||
Objective/Criterion Reference: | Placeholder reference 2006 303(d) | ||||
Evaluation Guideline: | With a thorough prior knowledge of normal fish anatomy, the investigators used histological analysis to detect alterations in tissues and organs caused by exposure to toxicants. When the concentration of a toxicant is sufficient to result only in cellular injury, but not in death of the cells, sublethal (adaptive) changes may be observed in affected cells.
A combination of the necropsy-based approach and the histological condition index was used in this study. Alterations from the expected normal gross anatomy and microscopic anatomy of resident fishes, fathead minnow (Pimephales promelas), goldfish (Cyprinus carpio), white croaker (Genyonemus lineatus) mosquito fish (Gambusia affinis), and tilapia (Tilapia sp.) were included in the investigation. Lesions were compared to reference populations. |
||||
Guideline Reference: | Placeholder reference 2006 303(d) | ||||
Spatial Representation: | Fish were collected from four sites in the lower San Gabriel River watershed. The sites included Coyote Creek above and below the Long Beach wastewater treatment plant outfall, the San Gabriel River at the confluence of Coyote Creek, and from the tidal prism at College Park Drive. | ||||
Temporal Representation: | Samples were collected between 1992 and 1993. | ||||
Environmental Conditions: | |||||
QAPP Information: | Quality Assurance and methods well described in the report: "Toxicity study of the Santa Clara, San Gabriel River, and Calleguas Creek" (Bailey et al., 1996, in LACSD, 2004b). | ||||
QAPP Information Reference(s): | |||||
DECISION ID |
72231 |
Region 4 |
Coyote Creek |
||
Pollutant: | Excess Algal Growth |
Final Listing Decision: | Delist from 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | Delist from 303(d) list (TMDL required list)(2016) |
Revision Status | Original |
Reason for Delisting: | Flaws in original listing |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for removal from the section 303(d) list under section 4.7 of the Listing Policy. Under section 4.7 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. Four of the samples were judged to exceed a subjective algae ranking guideline. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification in favor of removing this water segment-pollutant combination from the section 303(d) list. This conclusion is based on the staff findings that: 1. Four of 5 samples exceeded the subjective algae guideline and this does not exceed the allowable frequency listed in Table 4.1 of the Listing Policy. 2. Excess algae growth information should not be placed on the section 303(d) list because it is not a pollutant or toxicity (section 2 of the Listing Policy). Additionally, a remedial program is in place to lower ammonia concentrations in this water body which will likely address the algae problem. 3. Pursuant to section 4.11 of the Listing Policy, no additional data and information are available indicating that standards are met. |
Regional Board Decision Recommendation: | This is a decision previously approved by the State Water Resources Control Board and the USEPA. No new data were assessed by the Regional Board for the current. The decision has not changed. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
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LOE ID: | 2445 | ||||
Pollutant: | Excess Algal Growth | ||||
LOE Subgroup: | Pollutant-Nuisance | ||||
Matrix: | Not Specified | ||||
Fraction: | None | ||||
Beneficial Use: | Non-Contact Recreation | ||||
Number of Samples: | 0 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | Not Specified | ||||
Data Used to Assess Water Quality: | Five observations with 4 of the observations judged to be not supporting beneficial uses. | ||||
Data Reference: | Placeholder reference 2006 303(d) | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Basin Plan: Waters shall not contain biostimulatory substances in concentrations that promote aquatic growth to the extent that such growth causes nuisance or adversely affects beneficial uses. | ||||
Objective/Criterion Reference: | Placeholder reference 2006 303(d) | ||||
Evaluation Guideline: | The presence of algae in the water segment. The rankings were subjective and assigned to water bodies by one person for consistency (LACSD, 2004a). | ||||
Guideline Reference: | Placeholder reference 2006 303(d) | ||||
Spatial Representation: | One sampling location. | ||||
Temporal Representation: | Observations made between 1992 and 1995. Samples taken in different seasons and no greater than two times within one year. | ||||
Environmental Conditions: | |||||
QAPP Information: | No QA information provided. | ||||
QAPP Information Reference(s): | |||||
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LOE ID: | 2446 | ||||
Pollutant: | Excess Algal Growth | ||||
LOE Subgroup: | Narrative Description Data | ||||
Matrix: | Not Specified | ||||
Fraction: | None | ||||
Beneficial Use: | Non-Contact Recreation | ||||
Number of Samples: | 0 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | Not Specified | ||||
Data Used to Assess Water Quality: | An alternative enforceable program is in place that will address ammonia water quality standards exceedances for this Reach. In June 1995, the seven water reclamation plants discharging in the San Gabriel River and Santa Clara River watersheds received NPDES permits containing requirements regarding compliance with the Basin Plan water quality objectives for ammonia. In accordance with these permits, the Los Angeles County Sanitation Districts have been pursuing the addition of nitrification and denitrification facilities at each of these plants to comply with the ammonia objectives. By June 2003, it is expected that these new facilities will be operational and ammonia will be drastically reduced. Research facility operation shows that the monthly average ammonia concentration will fully comply with the chronic ammonia objective that are expected to be applicable in June 2003. It is probable that the majority of ammonia discharged to this water body was contributed by POTWs. Information in the record indicates that the majority (over 95%) of the ammonia in the Los Angeles River was contributed by POTWs. It is probable that the contribution in the San Gabriel River watershed is dominated by contributions from POTWs as well. Generally, concentrations of ammonia upstream of the treatment plants is much lower than downstream concentrations (up to an order of magnitude difference). | ||||
Data Reference: | Placeholder reference 2006 303(d) | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | |||||
Objective/Criterion Reference: | |||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | |||||
Temporal Representation: | |||||
Environmental Conditions: | |||||
QAPP Information: | QA Info Missing | ||||
QAPP Information Reference(s): | |||||
DECISION ID |
68259 |
Region 4 |
Coyote Creek |
||
Pollutant: | Copper, Dissolved |
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)(2016) |
Revision Status | Original |
Sources: | A Source Unknown |
TMDL Name: | San Gabriel River Metals (39) |
TMDL Project Code: | 385 |
Date TMDL Approved by USEPA: | 03/27/2007 |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for removal from the section 303(d) list under section 2.2 and 4.1 of the Listing Policy. Under this section a single line of evidence is necessary to assess listing status.
7 lines of evidence are available in the administrative record to assess this pollutant. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against removing this water segment-pollutant combination from the section 303(d) list. There is sufficient justification to place it in the Being Addressed portion of the 303(d) list because a TMDL has been completed and established by the United States Environmental Protection Agency (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. 19 of 76 samples exceeded the copper California Toxics Rule (CTR) criterion continuous concentration for the dissolved fraction, four of 178 samples exceeded the lead CTR criterion continuous concentration for the total fraction, and this exceeds the allowable frequency listed in Table 4.1 of the Listing Policy for the dissolved fraction. 4.The San Gabriel River Metals TMDL has been established by USEPA on 03/26/2007. 5. Pursuant to section 4.11 of the Listing Policy, no additional data and information are available indicating that standards are met. |
Regional Board Decision Recommendation: | This is a decision previously approved by the State Water Resources Control Board and the USEPA. No new data were assessed by the Regional Board for the current. The decision has not changed. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
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LOE ID: | 83900 | ||||
Pollutant: | Copper | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total Dissolved | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 126 | ||||
Number of Exceedances: | 1 | ||||
Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) | ||||
Data Used to Assess Water Quality: | One of the 126 samples exceeded the hardness adjusted criteria. | ||||
Data Reference: | Data for Various Pollutants in Various Water Bodies in Sanitation Districts of Los Angeles County, 2005-2010. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Surface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | California Toxics Rule (CTR) lists criterion continuous concentrations (4-day average) to protect aquatic life in freshwater. The criterion in freshwater is hardness dependent for each sample and varies based on the ambient hardness during sampling. Section (b)(1) in CTR contains the hardness dependent formula for the metals criterion. If no hardness data were available, a value of 100 mg/L was used. | ||||
Guideline Reference: | Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition | ||||
Spatial Representation: | Samples were collected from Coyote Creek from location LB also called SG at three sublocations: RA, RA1, and RA1B. | ||||
Temporal Representation: | Samples were collected monthly from June 2006 through May of 2010. | ||||
Environmental Conditions: | |||||
QAPP Information: | The Biology Department of the San Jose Creek Water Quality Laboratory is responsible for collecting samples from receiving water stations along the San Gabriel River, Coyote Creek, San Jose Creek, Santa Clara River, and the Rio Hondo River. Data is collected for the Los Angeles Sanitation District NPDES permits. Some standard operating procedures for sampling were submitted, however no QA Project Plan was. | ||||
QAPP Information Reference(s): | |||||
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LOE ID: | 2432 | ||||
Pollutant: | Copper | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 21 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Numeric data generated from 21 samples taken from 10/30/00 to 4/30/03 at one to two-week sampling interval. It was not possible to determine any exceedances of total copper concentration in this water body because there is not guideline applicable to assess total copper (LACDPW, 2004). | ||||
Data Reference: | Placeholder reference 2006 303(d) | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | There is no guideline for total copper. | ||||
Objective/Criterion Reference: | Placeholder reference 2006 303(d) | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | One sample site sampled during the dry and wet season beginning from 10/12/00 through 4/30/03 at approximately one to two week intervals. | ||||
Temporal Representation: | Twenty-one samples where taken during the wet and dry season from 10/12/00 to 4/30/03 at approximately one to two week intervals as part of the Los Angeles County Storm water monitoring program prepared by the Los Angeles County Department of Public Works. | ||||
Environmental Conditions: | The Coyote Creek Monitoring Station (S13) is located at the existing ACOE stream gauge station (Stream Gauge No. F354-R) below Spring Street in the lower San Gabriel River watershed. The site assists in determining mass loading for the San Gabriel River watershed. At this location, the upstream tributary area is 150 square miles (extending into Orange County). The sampling site was chosen to avoid backwater effects from the San Gabriel River. Coyote Creek, at the gauging station, is a concrete lined trapezoidal channel. The Coyote Creek sampling location has been an active stream gauging station since 1963. | ||||
QAPP Information: | Evaluation of Analytes and QA/QC Specifications for Monitoring Program (Woodward-Clyde, 1996) Los Angeles County Department of Public Works. | ||||
QAPP Information Reference(s): | |||||
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LOE ID: | 25038 | ||||
Pollutant: | Copper | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Aquatic Life Use: | Preservation of Rare & Endangered Species | Wildlife Habitat | ||||
Number of Samples: | 157 | ||||
Number of Exceedances: | 4 | ||||
Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) | ||||
Data Used to Assess Water Quality: | Four of 157 samples exceeded the California Toxics Rule (CTR) criterion continuous concentration for copper and three of 157 samples exceeded the criterion maximum concentration. Water quality samples were taken and analyzed for copper in accordance with the Long Beach Waste Water Reclamation Plant permit monitoring and testing parameters. | ||||
Data Reference: | NPDES receiving water monitoring reports for Long Beach Water Reclamation Plant (NPDES No. CA0054119), Los Coyotes Water Reclamation Plant (NPDES No. CA0053716), Pomona Water Reclamation Plant (NPDES No. CA0053911), San Jose Creek Water Reclamation Plant (NPDES No. CA0053619), and Whittier Narrows Creek Water Reclamation Plant (NPDES No. CA0054011). | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | CTR lists criterion maximum concentrations and criterion continuous concentrations for copper to protect aquatic life in freshwater. The copper criteria in freshwater is hardness dependent for each sample and varies based on the on the ambient hardness during sampling. Section (b)(1) in CTR contains the hardness dependent formula for metals the criteria. | ||||
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: | The Sanitation Districts of Los Angeles County conducted sampling in Coyote Creek in the following receiving water monitoring stations: station RA1 located upstream of discharge from Long Beach Water Reclamation Plant; station RA located downstream of discharge from Long Beach Water Reclamation Plant; and station R9 East located at the downstream end of the pavement lining (near Atherton Street) in the eastern low flow channel of San Gabriel River. | ||||
Temporal Representation: | Grab samples were taken and analyzed on an approximately and monthly basis from August 2004 to February 2007. | ||||
Environmental Conditions: | |||||
QAPP Information: | Data was collected in compliance with the sampling and monitoring procedures detailed in Sanitation Districts of Los Angeles County (NPDES No. CA0054119) Monitoring and Reporting Program. | ||||
QAPP Information Reference(s): | Long Beach Water Reclamation Plant Monitoring and Reporting Program for NPDES No. CA0054119 (County Sanitation Districts of Los Angeles County) | ||||
|
|||||
LOE ID: | 28699 | ||||
Pollutant: | Copper | ||||
LOE Subgroup: | Narrative Description Data | ||||
Matrix: | Not Specified | ||||
Fraction: | None | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Aquatic Life Use: | Preservation of Rare & Endangered Species | Wildlife Habitat | ||||
Number of Samples: | 0 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | Not Specified | ||||
Data Used to Assess Water Quality: | A TMDL has been established for this water segment-pollutant combination. The San Gabriel River MetalsTMDL was established by USEPA on March 26, 2007. | ||||
Data Reference: | Staff report and appendix establishing a TMDL for Metals in the San Gabriel River Watershed. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | |||||
Objective/Criterion Reference: | |||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | |||||
Temporal Representation: | |||||
Environmental Conditions: | |||||
QAPP Information: | QA information unavailable. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 25036 | ||||
Pollutant: | Copper | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Aquatic Life Use: | Preservation of Rare & Endangered Species | Wildlife Habitat | ||||
Number of Samples: | 14 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) | ||||
Data Used to Assess Water Quality: | Zero of 14 samples exceeded the hardness dependent California Toxics Rule (CTR) criterion continuous concentration for copper and zero of 13 samples exceeded the hardness dependent CTR criterion maximum concentration. Water quality samples were taken and analyzed for copper in accordance with the Municipal Separate Storm Sewer System (MS4) permit monitoring and testing parameters. | ||||
Data Reference: | Monitoring Report (MS4 Data) - CI 6948 for order no. 01-182 NPDES No. CAS004001 Municipal Storm Water and Urban Runoff Discharges within the County of Los Angeles, and the Incorporated Cities therein, Except the City of Long Beach | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | CTR lists criterion continuous concentrations for copper to protect aquatic life in freshwater. The copper criterion in freshwater is hardness dependent for each sample and varies based on the on the ambient hardness during sampling. Section (b)(1) in CTR contains the hardness dependent formula for the metals criterion. | ||||
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: | The Los Angeles County Department of Public Works conducted sampling at the mass emission monitoring station S13 located below Spring Street in Coyote Creek (Lat: 33.8098610175, Long: -118.077061937). | ||||
Temporal Representation: | Composite samples were taken approximately six per year (four wet-weather events and two dry-weather events), from March 2005 through April 2007. | ||||
Environmental Conditions: | |||||
QAPP Information: | Data was collected in compliance with the sampling and monitoring procedures detailed in County of Los Angeles MS4 Permit (NPDES No. CAS004001) Monitoring and Reporting Program. | ||||
QAPP Information Reference(s): | Monitoring and Reporting Program - CI 6948 for order no. 01-182 NPDES No. CAS004001 Municipal Storm Water and Urban Runoff Discharges within the County of Los Angeles, and the incorporated cities, except the City of Long Beach | ||||
|
|||||
LOE ID: | 83899 | ||||
Pollutant: | Copper | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 26 | ||||
Number of Exceedances: | 6 | ||||
Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) | ||||
Data Used to Assess Water Quality: | Six of the 26 samples exceeded the hardness adjusted CTR value for copper. | ||||
Data Reference: | Data for Various Waterbodies in Region 8 and Region 9, 2006-2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Surface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | California Toxics Rule (CTR) lists criterion continuous concentrations (4-day average) to protect aquatic life in freshwater. The disolved criterion in freshwater is hardness dependent for each sample and varies based on the ambient hardness during sampling. Section (b)(1) in CTR contains the hardness dependent formula for the metals criterion. If no hardness data were available, a value of 100 mg/L was used. | ||||
Guideline Reference: | Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition | ||||
Spatial Representation: | Samples were collected from station CCBA01, Coyote Creek at Valley View Drive. | ||||
Temporal Representation: | Samples were intermittently collected from September 2006 until January 2009. | ||||
Environmental Conditions: | Approximately 77% of the samples were collected after storm events. | ||||
QAPP Information: | Samples were collected and analyzed in accordance with the signed and certified, Quality Assurance Management Plan for the Orange County Stormwater Program. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 2429 | ||||
Pollutant: | Copper | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 62 | ||||
Number of Exceedances: | 19 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Numeric data generated from 62 samples taken from 11/10/97 to 1/7/05 at one to two-week sampling interval. Nineteen samples exceeded the dissolved copper continuous criterion concentration (CCC) (LARWQCB, 2006). | ||||
Data Reference: | Placeholder reference 2006 303(d) | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | CTR Dissolved Copper Criterion for continuous concentration (CCC) in water for the protection of aquatic life is expressed as a function of the total hardness of the water body. The aquatic life criteria will vary depending of total hardness reported at the sampling site. The CCC for dissolved copper is the highest concentration to which aquatic life can be exposed for an extended period of time (four days) without deleterious effects. This criterion is linked and applicable for the protection of aquatic life Beneficial Uses. | ||||
Objective/Criterion Reference: | Placeholder reference 2006 303(d) | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Station S13 on Coyote Creek. | ||||
Temporal Representation: | Samples collected between 11/10/97 and 1/7/05. | ||||
Environmental Conditions: | |||||
QAPP Information: | San Gabriel River metals TMDL monitoring. | ||||
QAPP Information Reference(s): | |||||
DECISION ID |
94178 |
Region 4 |
Coyote Creek |
||
Pollutant: | Chlorpyrifos |
Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | Do Not List on 303(d) list (TMDL required list)(2016) |
Revision Status | Original |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.
1 line of evidence is available in the administrative record to assess this pollutant. 0 of 23 samples exceeded the CRITERIA. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the CWA section 303(d) List in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. 0 of 23 samples exceeded the CRITERIA and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because applicable water quality standards are not being exceeded. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 83893 | ||||
Pollutant: | Chlorpyrifos | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total Dissolved | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 23 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) | ||||
Data Used to Assess Water Quality: | None of 23 samples exceed the continuous concentration (four day average) for chlorpyrifos in freshwater is 14.0 ng/L. However, for three of the samples, the reporting limit was greater than the evaluation guideline therefore those data were not usable. | ||||
Data Reference: | Data for Various Waterbodies in Region 8 and Region 9, 2006-2009. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | The Criteria Continuous Concentration (four day average) for chlorpyrifos in freshwater is 14.0 ng/L. | ||||
Guideline Reference: | Water quality criteria for diazinon and chlorpyrifos. Administrative Report 00-3. Rancho Cordova, CA: Pesticide Investigations Unit, Office of Spills and Response. CA Department of Fish and Game | ||||
Spatial Representation: | Samples were collected at site: CCBA01 | ||||
Temporal Representation: | Samples were collected from 2006 to 2009. | ||||
Environmental Conditions: | According to the County of Orange Stormwater Program Quality Assurance Management Plan (QAMP) dated January 2010, samples were collected during the dry season and storm events. | ||||
QAPP Information: | Data were submitted with the County of Orange Stormwater Program Quality Assurance Management Plan (QAMP) dated January 2010. However, data were collected prior to the development of this QAMP, therefore the quality of these data are unknown. For 3 samples the reporting limit was greater than the evaluation guideline, therefore these data are not of sufficient resolution to determine if water quality standards are being achieved. | ||||
QAPP Information Reference(s): | |||||
DECISION ID |
94582 |
Region 4 |
Coyote Creek |
||
Pollutant: | Endosulfan |
Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | Do Not List on 303(d) list (TMDL required list)(2016) |
Revision Status | Original |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence are necessary to assess listing status.
1 line of evidence is available in the administrative record to assess this pollutant. 0 of 2 samples exceeded the CRITERIA. Based on the readily available data and information, the weight of evidence indicates that there is insufficient justification for placing this water segment-pollutant combination on the CWA section 303(d) List. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. 0 of 2 samples exceeded the CRITERIA and this sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is fully supported using table 3.1. 4. Pursuant to SECTION 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 83849 | ||||
Pollutant: | Endosulfan | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 2 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | None of the two samples exceeded the water quality criteria/objective. | ||||
Data Reference: | Data for Various Pollutants in Various Water Bodies in Sanitation Districts of Los Angeles County, 2005-2010. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Region 4 Basin Plan objective is "No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses." | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | The California Toxic Rule criteria fresh aquatic life protection continuous concentration (4-day average)is 0.056 ug/L. | ||||
Guideline Reference: | Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition | ||||
Spatial Representation: | Four samples were collected from Coyote creek at locations SGR_LB_RSW-001 and SGR_LB_RSW-002. The location descriptions are: Long Beach Station RSW-001 (RA-1) and Long Beach Station RSW-002 (RA) | ||||
Temporal Representation: | One water sample from each locations was collected in 1/11/2010 | ||||
Environmental Conditions: | There was no special environmental conditions reported. | ||||
QAPP Information: | An excel spreadsheet of laboratory information called "LIMS" which gave reporting limits for each analyte evaluated accompanied each data package. | ||||
QAPP Information Reference(s): | |||||
DECISION ID |
73364 |
Region 4 |
Coyote Creek |
||
Pollutant: | Fluoride |
Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | Do Not List on 303(d) list (TMDL required list)(2016) |
Revision Status | Original |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the section 303(d) list under section 3.2 of the Listing Policy. Under section 3.2 a single line of evidence is necessary to assess listing status.
One line of evidence is available in the administrative record to assess this pollutant. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the section 303(d) list in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. One of 93 samples exceeded the maximum contamination level listed in the California Code of Regulations for fluoride 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: | This is a decision previously approved by the State Water Resources Control Board and the USEPA. No new data were assessed by the Regional Board for the current. 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: | 25101 | ||||
Pollutant: | Fluoride | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 93 | ||||
Number of Exceedances: | 1 | ||||
Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) | ||||
Data Used to Assess Water Quality: | One of 93 samples exceeded the primary maximum contamination level (MCL) for fluoride in Coyote Creek. Water quality samples were taken and analyzed for fluoride in accordance with the Sanitation Districts of Los Angeles County permit monitoring and testing parameters. | ||||
Data Reference: | NPDES receiving water monitoring reports for Long Beach Water Reclamation Plant (NPDES No. CA0054119), Los Coyotes Water Reclamation Plant (NPDES No. CA0053716), Pomona Water Reclamation Plant (NPDES No. CA0053911), San Jose Creek Water Reclamation Plant (NPDES No. CA0053619), and Whittier Narrows Creek Water Reclamation Plant (NPDES No. CA0054011). | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The California Code of Regulations' Table 64432-A lists a maximum contamination level (primary MCL) of 2.0 mg/L for fluoride to the protect drinking water sources. | ||||
Objective/Criterion Reference: | California Code of Regulations, Title 22, Division 4, Chapter 15. Domestic Water Quality and Monitoring | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | The Sanitation Districts of Los Angeles County conducted sampling in Coyote Creek in the following receiving water monitoring stations: receiving water station RA1 located upstream of discharge from Long Beach Water Reclamation Plant; receiving water station RA located downstream of discharge from Long Beach Water Reclamation Plant; and station R9 East located at the downstream end of the pavement lining (near Atherton Street) in the eastern low flow channel of San Gabriel River. | ||||
Temporal Representation: | Grab samples were taken and analyzed on a bimonthly and monthly basis from June 2004 to February 2007. | ||||
Environmental Conditions: | |||||
QAPP Information: | Data was collected in compliance with the sampling and monitoring procedures detailed in Sanitation Districts of Los Angeles County Permit (No. CA0054119) Monitoring and Reporting Program. | ||||
QAPP Information Reference(s): | Long Beach Water Reclamation Plant Monitoring and Reporting Program for NPDES No. CA0054119 (County Sanitation Districts of Los Angeles County) | ||||
DECISION ID |
68005 |
Region 4 |
Coyote Creek |
||
Pollutant: | Nitrogen, Nitrite |
Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | Do Not List on 303(d) list (TMDL required list)(2016) |
Revision Status | Original |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the section 303(d) list under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.
Four lines lines of evidence are available in the administrative record to assess this pollutant. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the section 303(d) list in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. Three of 533 samples exceeded the Basin Plan water quality objective for nitrite-nitrogen (NO2-N) and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
Regional Board Decision Recommendation: | This is a decision previously approved by the State Water Resources Control Board and the USEPA. No new data were assessed by the Regional Board for the current. 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: | 2436 | ||||
Pollutant: | Nitrogen, Nitrite | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 319 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Out of 319 samples, none exceed the Basin Plan Objective (Green, 2006). | ||||
Data Reference: | Placeholder reference 2006 303(d) | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Basin Plan Water Quality Objective for Nitrite-Nitrogen of 1 mg/L. | ||||
Objective/Criterion Reference: | Placeholder reference 2006 303(d) | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Three sites on Coyote Creek | ||||
Temporal Representation: | Samples were collected June 2003 through August 2005. | ||||
Environmental Conditions: | |||||
QAPP Information: | County Sanitation Districts of Los Angeles County. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 25118 | ||||
Pollutant: | Nitrogen, Nitrite | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Aquatic Life Use: | Freshwater Replenishment | Preservation of Rare & Endangered Species | Wildlife Habitat | ||||
Number of Samples: | 24 | ||||
Number of Exceedances: | 1 | ||||
Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) | ||||
Data Used to Assess Water Quality: | One of 24 samples exceeded the Basin Plan water quality objective for nitrite-nitrogen in Coyote Creek. Water quality samples were taken and analyzed for nitrite-nitrogen in accordance with the Municipal Separate Storm Sewer System (MS4) permit monitoring and testing parameters. | ||||
Data Reference: | Monitoring Report (MS4 Data) - CI 6948 for order no. 01-182 NPDES No. CAS004001 Municipal Storm Water and Urban Runoff Discharges within the County of Los Angeles, and the Incorporated Cities therein, Except the City of Long Beach | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Basin Plan lists a water quality objective of 1.0 mg/L for nitrite-nitrogen (NO2-N). | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | The Los Angeles County Department of Public Works conducted sampling at the mass emission monitoring station S13 located below Spring Street in Coyote Creek (Lat: 33.8098610175, Long: -118.077061937). | ||||
Temporal Representation: | Composite samples were taken approximately six per year (four wet-weather events and two dry-weather events), from October 2003 through April 2007. | ||||
Environmental Conditions: | |||||
QAPP Information: | Data was collected in compliance with the sampling and monitoring procedures detailed in County of Los Angeles MS4 Permit (NPDES No. CAS004001) Monitoring and Reporting Program. | ||||
QAPP Information Reference(s): | Monitoring and Reporting Program - CI 6948 for order no. 01-182 NPDES No. CAS004001 Municipal Storm Water and Urban Runoff Discharges within the County of Los Angeles, and the incorporated cities, except the City of Long Beach | ||||
|
|||||
LOE ID: | 25117 | ||||
Pollutant: | Nitrogen, Nitrite | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Aquatic Life Use: | Freshwater Replenishment | Preservation of Rare & Endangered Species | Wildlife Habitat | ||||
Number of Samples: | 169 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) | ||||
Data Used to Assess Water Quality: | Zero of 169 samples exceeded the Basin Plan water qualithy objective for nitrite-nitrogen in Coyote Creek. Water quality samples were taken and analyzed for nitrite-nitrogen in accordance with the Sanitation Districts of Los Angeles County permit monitoring and testing parameters. | ||||
Data Reference: | NPDES receiving water monitoring reports for Long Beach Water Reclamation Plant (NPDES No. CA0054119), Los Coyotes Water Reclamation Plant (NPDES No. CA0053716), Pomona Water Reclamation Plant (NPDES No. CA0053911), San Jose Creek Water Reclamation Plant (NPDES No. CA0053619), and Whittier Narrows Creek Water Reclamation Plant (NPDES No. CA0054011). | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Basin Plan lists a water quality objective of 1.0 mg/L for nitrite-nitrogen (NO2-N). | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | The Sanitation Districts of Los Angeles County conducted sampling in Coyote Creek in the following receiving water monitoring stations: receiving water station RA1 located upstream of discharge from Long Beach Water Reclamation Plant and receiving water station RA located downstream of discharge from Long Beach Water Reclamation Plant. | ||||
Temporal Representation: | Composite samples were taken approximately six per year (four wet-weather events and two dry-weather events), from September 2005 through February 2007. | ||||
Environmental Conditions: | |||||
QAPP Information: | Data was collected in compliance with the sampling and monitoring procedures detailed in Sanitation Districts of Los Angeles County Permit (No. CA0054119) Monitoring and Reporting Program. | ||||
QAPP Information Reference(s): | Long Beach Water Reclamation Plant Monitoring and Reporting Program for NPDES No. CA0054119 (County Sanitation Districts of Los Angeles County) | ||||
|
|||||
LOE ID: | 2435 | ||||
Pollutant: | Nitrogen, Nitrite | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 21 | ||||
Number of Exceedances: | 2 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Numeric data generated from 21 samples taken from 10/30/00 to 4/30/03 at one to two-week sampling interval. Two samples exceeded the Basin Plan WQO for Nitrite-Nitrogen (LACPWD, 2004c). | ||||
Data Reference: | Placeholder reference 2006 303(d) | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Basin Plan Water Quality Objective for Nitrite-Nitrogen of 1 mg/L. | ||||
Objective/Criterion Reference: | Placeholder reference 2006 303(d) | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | One sample site sampled during the dry and wet season beginning from 10/12/00 through 4/30/03 at approximately one to two week intervals. | ||||
Temporal Representation: | Twenty-one samples where taken during the wet and dry season from 10/12/00 to 4/30/03 at approximately one to two week intervals as part of the Los Angeles County Storm water monitoring program prepared by the Los Angeles County Department of Public Works. | ||||
Environmental Conditions: | The Coyote Creek Monitoring Station (S13) is located at the existing ACOE stream gage station (Stream Gage No. F354-R) below Spring Street in the lower San Gabriel River watershed. The site assists in determining mass loading for the San Gabriel River watershed. At this location, the upstream tributary area is 150 square miles (extending into Orange County). The sampling site was chosen to avoid backwater effects from the San Gabriel River. Coyote Creek, at the gauging station, is a concrete lined trapezoidal channel. The Coyote Creek sampling location has been an active stream gauging station since 1963. | ||||
QAPP Information: | Evaluation of Analytes and QA/QC Specifications for Monitoring Program (Woodward-Clyde, 1996) Los Angeles County Department of Public Works. | ||||
QAPP Information Reference(s): | |||||
DECISION ID |
94641 |
Region 4 |
Coyote Creek |
||
Pollutant: | Nitrogen, ammonia (Total Ammonia) |
Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | Do Not List on 303(d) list (TMDL required list)(2016) |
Revision Status | Original |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.
1 line of evidence is available in the administrative record to assess this pollutant. 9 of 260 samples exceeded the CRITERIA. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the CWA section 303(d) List in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. 9 of 260 samples exceeded the CRITERIA and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because applicable water quality standards are not being exceeded. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 83863 | ||||
Pollutant: | Nitrogen, ammonia (Total Ammonia) | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 260 | ||||
Number of Exceedances: | 9 | ||||
Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) | ||||
Data Used to Assess Water Quality: | 9 of 260 samples exceed the site-specific objective for ammonia. | ||||
Data Reference: | Data for Various Pollutants in Various Water Bodies in Sanitation Districts of Los Angeles County, 2005-2010. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Los Angeles Regional Water Quality Control Plan 30-day site specific objective for total ammonia as nitrogen is a function of pH, temperature, and the presence of early life stages. The site specific objective for Coyote Creek (Long Beach WRP to confluence with San Gabriel River) has early life stages absent year round. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Samples were collected at three sites: Station LB-RA-1 is located just downstream of the Willow Street overpass and upstream of the LBWRP outfall, Station LB-RA is located 600 feet downstream the LBWRP outfall, and Station LB-RA1B is located 100 feet downstream the LBWRP outfall. | ||||
Temporal Representation: | LB-RA-1 and LB-RA samples were collected from June 2005 to October 2009. LB-RA1B samples were collected from Nov 2007 to October 2009. | ||||
Environmental Conditions: | |||||
QAPP Information: | Samples were collected as part of an NPDES permit requirement. Receiving water data collected to represent the water body as a whole. No QAPP was submitted but an unsigned field manual was. | ||||
QAPP Information Reference(s): | |||||