Water Body Name: | Puente Creek |
Water Body ID: | CAR4053100020081117111726 |
Water Body Type: | River & Stream |
Lines of Evidence (LOEs) for Decision ID 14109 |
LOE ID: | 26058 |
Pollutant: | Indicator Bacteria |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Water Contact Recreation |
Number of Samples: | 7 |
Number of Exceedances: | 6 |
Data and Information Type: | Other Agencies/Organizations provided monitoring data |
Data Used to Assess Water Quality: | Six of seven samples exceeded the Basin Plan single sample water quality objectives for indicator bacteria in fresh water and one of one sample exceeded the Basin Plan geometric mean water quality 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 Data (MS4 Data) for Tributaries of the San Gabriel River Watershed- 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 |
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 |
Basin Plan Amendments to the Water Quality Control Plan Los Angeles Region R4 Basin Plan as of 02/02/2009 | |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | The Los Angeles County Department of Public Works conducted sampling at monitoring station TS14 located at the Don Julian Road crossing with Puente Creek. |
Temporal Representation: | Grab samples were taken approximately six per year (four wet-weather events and two dry-weather events), from October 2006 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 |
Lines of Evidence (LOEs) for Decision ID 14116 |
LOE ID: | 26065 |
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: | 7 |
Number of Exceedances: | 2 |
Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) |
Data Used to Assess Water Quality: | Two of seven samples exceeded the California Toxics Rule 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 Data (MS4 Data) for Tributaries of the San Gabriel River Watershed- 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 |
Water Quality Objective/Criterion: | The California Toxics Rule lists a Criterion Continuous Concentration of 5.0 ug/L for Selenium to protect aquatic life in freshwater.water. |
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 monitoring station TS14 located at the Don Julian Road crossing with Puente Creek. |
Temporal Representation: | Grab samples were taken approximately six per year (four wet-weather events and two dry-weather events), from October 2006 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 |
Lines of Evidence (LOEs) for Decision ID 16236 |
LOE ID: | 27250 |
Pollutant: | Sulfates |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Municipal & Domestic Supply |
Number of Samples: | 7 |
Number of Exceedances: | 5 |
Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) |
Data Used to Assess Water Quality: | Five of seven samples exceeded the California Code of Regulations secondary MCL for sulfate in Puente Creek. Water quality samples were taken and analyzed for Sulfate in accordance with the Municipal Separate Storm Sewer System (MS4) permit monitoring and testing parameters. |
Data Reference: | Monitoring Data (MS4 Data) for Tributaries of the San Gabriel River Watershed- 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 |
Water Quality Objective/Criterion: | The California Code of Regulations' Table 64449-B lists a recommended maximum contamination level (secondary MCL) of 250 mg/L for Sulfate to protect drinking water sources. |
Objective/Criterion Reference: | California Code of Regulations, Title 22, Division 4, Chapter 15. Domestic Water Quality and Monitoring. http://www.cdph.ca.gov/certlic/drinkingwater/Pages/Lawbook.aspx |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | The Los Angeles County Department of Public Works conducted sampling at monitoring station TS14 located at the Don Julian Road crossing with Puente Creek. |
Temporal Representation: | Grab samples were taken approximately six per year (four wet-weather events and two dry-weather events), from October 2006 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 |