Water Body Name: | Pacific Ocean Shoreline, San Diego HU, at the San Diego River outlet, at Dog Beach |
Water Body ID: | CAC9071100020091104131050 |
Water Body Type: | Coastal & Bay Shoreline |
DECISION ID |
44291 |
Region 9 |
Pacific Ocean Shoreline, San Diego HU, at the San Diego River outlet, at Dog Beach |
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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 (TMDL required list)(2012) |
Revision Status | Revised |
Sources: | Source Unknown |
TMDL Name: | Bacteria Impaired Waters I (creeks and beach shorelines) |
TMDL Project Code: | 169 |
Date TMDL Approved by USEPA: | 06/22/2011 |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for removal on the CWA section 303(d) List under sections 2.2 and [SECTION] of the Listing Policy. Under [SECTION] of the Policy, a minimum of one line of evidence is needed to assess listing status.
Fourteen 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. There is sufficient justification to place it in the Being Addressed portion of the CWA 303(d) List because a TMDL has been completed and approved by RWQCB and USEPA, and is expected to result in attainment of the standard. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. Thirteen of 60 geomean samples collected prior to 2008 exceeded the water quality objective for enterococcus and with the latest data, 168 of 705 single samples exceed the SSM WQO for total coliform for SHELL and these exceed the allowable frequency listed in Table 3.2 of the Listing Policy. 4. The Bacteria TMDL for 20 beaches/creeks was approved by USEPA on 06/22/2011. 5. 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. |
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LOE ID: | 31234 | ||||
Pollutant: | Fecal Coliform | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Water Contact Recreation | ||||
Number of Samples: | 57 | ||||
Number of Exceedances: | 1 | ||||
Data and Information Type: | PWS pathogen monitoring (ambient water) | ||||
Data Used to Assess Water Quality: | Beach monitoring data was collected by the County of San Diego from April 1999 through October 2007. A total of 364 dry month (April through October) single samples were collected with 57 dry month geomeans calculated. One of the 57 geomeans exceeded the geomean water quality objective. | ||||
Data Reference: | Department of Environmental Health, Ocean & Bay Recreational Water Quality Program, 2007. AB 411 monitoring data 1999 to 2007 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Single Sample Maximum: Fecal coliform density shall not exceed 400 per 100 ml;
Geomean: Fecal coliform density shall not exceed 200 per 100ml (SWRCB, 2005). |
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Objective/Criterion Reference: | Water Quality Control Plan Ocean Waters of California. California Ocean Plan 2005. Sacramento, CA: State Water Resources Control Board, California Environmental Protection Agency | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Samples were collected from the San Diego HU, at the San Diego River outlet, at Dog Beach, Station id FM-010. Lat/ Long: 32.756700/ -177.251700. | ||||
Temporal Representation: | Samples were collected weekly from April 1999 through October 2007. | ||||
Environmental Conditions: | |||||
QAPP Information: | Quality control for the bacteria analysis portion was conducted in accordance with the County of San Diego, Department Public Health Laboratory Quality Assurance Manual. | ||||
QAPP Information Reference(s): | County of San Diego, 2006. Department Public Health Laboratory, Quality Assurance Manual, December 2006 | ||||
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LOE ID: | 30411 | ||||
Pollutant: | Total Coliform | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Water Contact Recreation | ||||
Number of Samples: | 28 | ||||
Number of Exceedances: | 4 | ||||
Data and Information Type: | PWS pathogen monitoring (ambient water) | ||||
Data Used to Assess Water Quality: | Shoreline beach monitoring data was collected by the County of San Diego from January 2004 through December 2007. The number of samples collected for total coliform analysis was 505 with 28 samples correlated with a storm event. Four of the storm samples exceeded the single sample water quality objective. This information will not be used in determining a listing decision, but is of interest to the Regional Board and has been included here as additional anecdotal information. | ||||
Data Reference: | National Weather Service Forecast Office, San Diego, California, Chronological Regional Temperature and Precipitation Listings by Station | ||||
Department of Environmental Health, Ocean & Bay Recreational Water Quality Program, 2007. AB 411 monitoring data 1999 to 2007 | |||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Geomean: Total coliform density shall not exceed 1,000 per 100ml (SWRCB, 2005).
Single Sample Maximum: Total coliform density shall not exceed 10,000 per 100ml; |
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Objective/Criterion Reference: | Water Quality Control Plan Ocean Waters of California. California Ocean Plan 2005. Sacramento, CA: State Water Resources Control Board, California Environmental Protection Agency | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Samples were collected from the San Diego HU, at the San Diego River outlet, at Dog Beach, Station id FM-010. Lat/ Long: 32.756700/ -177.251700. | ||||
Temporal Representation: | Samples were collected weekly from January 1999 through October 2002, and April 2003 through December 2007. | ||||
Environmental Conditions: | Comparisons were also made for days with matching bacteria and storm event data. A storm event was defined as 0.2 inches of rainfall within a 72 hour period. | ||||
QAPP Information: | Quality control for the bacteria analysis portion of this study was conducted in accordance with the County of San Diego's Quality beach monitoring program. | ||||
QAPP Information Reference(s): | County of San Diego, 2006. Department Public Health Laboratory, Quality Assurance Manual, December 2006 | ||||
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LOE ID: | 30407 | ||||
Pollutant: | Fecal Coliform | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Water Contact Recreation | ||||
Number of Samples: | 508 | ||||
Number of Exceedances: | 47 | ||||
Data and Information Type: | PWS pathogen monitoring (ambient water) | ||||
Data Used to Assess Water Quality: | Beach monitoring data was collected by the County of San Diego from January 1999 through October 2002, and April 2003 through December 2007. A total of 508 single samples were collected with 47 of the samples exceeding the single sample water quality objective. | ||||
Data Reference: | Department of Environmental Health, Ocean & Bay Recreational Water Quality Program, 2007. AB 411 monitoring data 1999 to 2007 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Single Sample Maximum: Fecal coliform density shall not exceed 400 per 100 ml;
Geomean: Fecal coliform density shall not exceed 200 per 100ml (SWRCB, 2005). |
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Objective/Criterion Reference: | Water Quality Control Plan Ocean Waters of California. California Ocean Plan 2005. Sacramento, CA: State Water Resources Control Board, California Environmental Protection Agency | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Samples were collected from the San Diego HU, at the San Diego River outlet, at Dog Beach, Station id FM-010. Lat/ Long: 32.756700/ -177.251700. | ||||
Temporal Representation: | Samples were collected weekly from January 1999 through October 2002, and April 2003 through December 2007. | ||||
Environmental Conditions: | |||||
QAPP Information: | Quality control for the bacteria analysis portion was conducted in accordance with the County of San Diego, Department Public Health Laboratory Quality Assurance Manual. | ||||
QAPP Information Reference(s): | County of San Diego, 2006. Department Public Health Laboratory, Quality Assurance Manual, December 2006 | ||||
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LOE ID: | 30406 | ||||
Pollutant: | Fecal Coliform | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Water Contact Recreation | ||||
Number of Samples: | 24 | ||||
Number of Exceedances: | 6 | ||||
Data and Information Type: | PWS pathogen monitoring (ambient water) | ||||
Data Used to Assess Water Quality: | Beach monitoring data was collected by the County of San Diego from January 1999 through October 2002, and April 2003 through December 2007. A total of 508 single samples were collected with 24 samples correlated with a storm event. Six of the storm samples exceeded the single sample water quality objective. This information will not be used in determining a listing decision, but is of interest to the Regional Board and has been included here as additional anecdotal information. | ||||
Data Reference: | National Weather Service Forecast Office, San Diego, California, Chronological Regional Temperature and Precipitation Listings by Station | ||||
Department of Environmental Health, Ocean & Bay Recreational Water Quality Program, 2007. AB 411 monitoring data 1999 to 2007 | |||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Single Sample Maximum: Fecal coliform density shall not exceed 400 per 100 ml;
Geomean: Fecal coliform density shall not exceed 200 per 100ml (SWRCB, 2005). Comparisons to water quality objectives were made for all data and data associated with storm events. A storm event was defined as 0.2 inches of rainfall within a 72 hour period. |
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Objective/Criterion Reference: | Water Quality Control Plan Ocean Waters of California. California Ocean Plan 2005. Sacramento, CA: State Water Resources Control Board, California Environmental Protection Agency | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Samples were collected from the San Diego HU, at the San Diego River outlet, at Dog Beach, Station id FM-010. Lat/ Long: 32.756700/ -177.251700. | ||||
Temporal Representation: | Samples were collected weekly from January 1999 through October 2002, and April 2003 through December 2007. | ||||
Environmental Conditions: | |||||
QAPP Information: | Quality control for the bacteria analysis portion was conducted in accordance with the County of San Diego, Department Public Health Laboratory Quality Assurance Manual. | ||||
QAPP Information Reference(s): | County of San Diego, 2006. Department Public Health Laboratory, Quality Assurance Manual, December 2006 | ||||
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LOE ID: | 31236 | ||||
Pollutant: | Total Coliform | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Water Contact Recreation | ||||
Number of Samples: | 60 | ||||
Number of Exceedances: | 1 | ||||
Data and Information Type: | PWS pathogen monitoring (ambient water) | ||||
Data Used to Assess Water Quality: | Beach monitoring data was collected by the County of San Diego from April 1999 through October 2007. A total of 441 dry month (April through October) single samples were collected with 60 dry month geomeans calculated. One of the 60 geomeans exceeded the geomean water quality objective. | ||||
Data Reference: | National Weather Service Forecast Office, San Diego, California, Chronological Regional Temperature and Precipitation Listings by Station | ||||
Department of Environmental Health, Ocean & Bay Recreational Water Quality Program, 2007. AB 411 monitoring data 1999 to 2007 | |||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Geomean: Total coliform density shall not exceed 1,000 per 100ml (SWRCB, 2005).
Single Sample Maximum: Total coliform density shall not exceed 10,000 per 100ml; |
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Objective/Criterion Reference: | Water Quality Control Plan Ocean Waters of California. California Ocean Plan 2005. Sacramento, CA: State Water Resources Control Board, California Environmental Protection Agency | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Samples were collected from the San Diego HU, at the San Diego River outlet, at Dog Beach, Station id FM-010. Lat/ Long: 32.756700/ -177.251700. | ||||
Temporal Representation: | Samples were collected weekly from April 1999 through October 2007. | ||||
Environmental Conditions: | |||||
QAPP Information: | Quality control for the bacteria analysis portion of this study was conducted in accordance with the County of San Diego's Quality beach monitoring program. | ||||
QAPP Information Reference(s): | County of San Diego, 2006. Department Public Health Laboratory, Quality Assurance Manual, December 2006 | ||||
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LOE ID: | 30846 | ||||
Pollutant: | Total Coliform | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Water Contact Recreation | ||||
Number of Samples: | 477 | ||||
Number of Exceedances: | 6 | ||||
Data and Information Type: | PWS pathogen monitoring (ambient water) | ||||
Data Used to Assess Water Quality: | Shoreline beach monitoring data was collected by the County of San Diego from January 1999 through October 2002, and April 2003 through December 2007. The number of samples collected for total coliform analysis was 505 of which 477 are dry weather (AB411) samples with six of those samples exceeding the single sample maximum total coliform standard. | ||||
Data Reference: | National Weather Service Forecast Office, San Diego, California, Chronological Regional Temperature and Precipitation Listings by Station | ||||
Department of Environmental Health, Ocean & Bay Recreational Water Quality Program, 2007. AB 411 monitoring data 1999 to 2007 | |||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Geomean: Total coliform density shall not exceed 1,000 per 100ml (SWRCB, 2005).
Single Sample Maximum: Total coliform density shall not exceed 10,000 per 100ml; |
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Objective/Criterion Reference: | Water Quality Control Plan Ocean Waters of California. California Ocean Plan 2005. Sacramento, CA: State Water Resources Control Board, California Environmental Protection Agency | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Samples were collected from the San Diego HU, at the San Diego River outlet, at Dog Beach, Station id FM-010. Lat/ Long: 32.756700/ -177.251700. | ||||
Temporal Representation: | Samples were collected weekly from January 1999 through October 2002, and April 2003 through December 2007. | ||||
Environmental Conditions: | |||||
QAPP Information: | Quality control for the bacteria analysis portion of this study was conducted in accordance with the County of San Diego's Quality beach monitoring program. | ||||
QAPP Information Reference(s): | County of San Diego, 2006. Department Public Health Laboratory, Quality Assurance Manual, December 2006 | ||||
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LOE ID: | 30405 | ||||
Pollutant: | Fecal Coliform | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Water Contact Recreation | ||||
Number of Samples: | 83 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PWS pathogen monitoring (ambient water) | ||||
Data Used to Assess Water Quality: | Beach monitoring data was collected by the County of San Diego from January 1999 through October 2002, and April 2003 through December 2007. A total of 508 single samples were collected with 83 geomeans calculated. None of the geomeans exceeded the geomean water quality objective. | ||||
Data Reference: | Department of Environmental Health, Ocean & Bay Recreational Water Quality Program, 2007. AB 411 monitoring data 1999 to 2007 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Single Sample Maximum: Fecal coliform density shall not exceed 400 per 100 ml;
Geomean: Fecal coliform density shall not exceed 200 per 100ml (SWRCB, 2005). |
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Objective/Criterion Reference: | Water Quality Control Plan Ocean Waters of California. California Ocean Plan 2005. Sacramento, CA: State Water Resources Control Board, California Environmental Protection Agency | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Samples were collected from the San Diego HU, at the San Diego River outlet, at Dog Beach, Station id FM-010. Lat/ Long: 32.756700/ -177.251700. | ||||
Temporal Representation: | Samples were collected weekly from January 1999 through October 2002, and April 2003 through December 2007. | ||||
Environmental Conditions: | |||||
QAPP Information: | Quality control for the bacteria analysis portion was conducted in accordance with the County of San Diego, Department Public Health Laboratory Quality Assurance Manual. | ||||
QAPP Information Reference(s): | County of San Diego, 2006. Department Public Health Laboratory, Quality Assurance Manual, December 2006 | ||||
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LOE ID: | 30401 | ||||
Pollutant: | Enterococcus | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Water Contact Recreation | ||||
Number of Samples: | 492 | ||||
Number of Exceedances: | 66 | ||||
Data and Information Type: | PWS pathogen monitoring (ambient water) | ||||
Data Used to Assess Water Quality: | Beach monitoring data was collected by the County of San Diego from January 1999 through October 2002, and April 2003 through December 2007. A total of 492 single samples were collected with 66 samples exceeding the single sample water quality objective. | ||||
Data Reference: | Department of Environmental Health, Ocean & Bay Recreational Water Quality Program, 2007. AB 411 monitoring data 1999 to 2007 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Single Sample Maximum: Enterococcus density shall not exceed 104 per 100 ml;
Geomean: Enterococcus density shall not exceed 35 per 100 ml (SWRCB, 2005). |
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Objective/Criterion Reference: | Water Quality Control Plan Ocean Waters of California. California Ocean Plan 2005. Sacramento, CA: State Water Resources Control Board, California Environmental Protection Agency | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Samples were collected from the San Diego HU, at the San Diego River outlet, at Dog Beach, Station id FM-010. Lat/ Long: 32.756700/ -177.251700. | ||||
Temporal Representation: | Samples were collected weekly from January 1999 through October 2002, and April 2003 through December 2007. | ||||
Environmental Conditions: | |||||
QAPP Information: | Quality control for the bacteria analysis portion was conducted in accordance with the County of San Diego, Department Public Health Laboratory Quality Assurance Manual. | ||||
QAPP Information Reference(s): | County of San Diego, 2006. Department Public Health Laboratory, Quality Assurance Manual, December 2006 | ||||
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LOE ID: | 30400 | ||||
Pollutant: | Enterococcus | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Water Contact Recreation | ||||
Number of Samples: | 27 | ||||
Number of Exceedances: | 9 | ||||
Data and Information Type: | PWS pathogen monitoring (ambient water) | ||||
Data Used to Assess Water Quality: | Beach monitoring data was collected by the County of San Diego from January 1999 through October 2002, and April 2003 through December 2007. A total of 492 single samples were collected with 27 samples correlated with a storm event. Nine of the storm samples exceeded the single sample water quality objective. This information will not be used in determining a listing decision, but is of interest to the Regional Board and has been included here as additional anecdotal information. | ||||
Data Reference: | National Weather Service Forecast Office, San Diego, California, Chronological Regional Temperature and Precipitation Listings by Station | ||||
Department of Environmental Health, Ocean & Bay Recreational Water Quality Program, 2007. AB 411 monitoring data 1999 to 2007 | |||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Single Sample Maximum: Enterococcus density shall not exceed 104 per 100 ml;
Geomean: Enterococcus density shall not exceed 35 per 100 ml (SWRCB, 2005). Comparisons to water quality objectives were made for all data and data associated with storm events. A storm event was defined as 0.2 inches of rainfall within a 72 hour period. |
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Objective/Criterion Reference: | Water Quality Control Plan Ocean Waters of California. California Ocean Plan 2005. Sacramento, CA: State Water Resources Control Board, California Environmental Protection Agency | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Samples were collected from the San Diego HU, at the San Diego River outlet, at Dog Beach, Station id FM-010. Lat/ Long: 32.756700/ -177.251700. | ||||
Temporal Representation: | Samples were collected weekly from January 1999 through October 2002, and April 2003 through December 2007. | ||||
Environmental Conditions: | |||||
QAPP Information: | Quality control for the bacteria analysis portion was conducted in accordance with the County of San Diego, Department Public Health Laboratory Quality Assurance Manual. | ||||
QAPP Information Reference(s): | County of San Diego, 2006. Department Public Health Laboratory, Quality Assurance Manual, December 2006 | ||||
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LOE ID: | 30399 | ||||
Pollutant: | Enterococcus | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Water Contact Recreation | ||||
Number of Samples: | 85 | ||||
Number of Exceedances: | 13 | ||||
Data and Information Type: | PWS pathogen monitoring (ambient water) | ||||
Data Used to Assess Water Quality: | Beach monitoring data were collected by the County of San Diego from January 1999 through October 2002, and April 2003 through December 2007. A total of 492 single samples were collected with 85 monthly geomeans calculated. Thirteen of the geomeans exceeded the geomean water quality objective. | ||||
Data Reference: | Department of Environmental Health, Ocean & Bay Recreational Water Quality Program, 2007. AB 411 monitoring data 1999 to 2007 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Single Sample Maximum: Enterococcus density shall not exceed 104 per 100 ml;
Geomean: Enterococcus density shall not exceed 35 per 100 ml (SWRCB, 2005). |
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Objective/Criterion Reference: | Water Quality Control Plan Ocean Waters of California. California Ocean Plan 2005. Sacramento, CA: State Water Resources Control Board, California Environmental Protection Agency | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Samples were collected from the San Diego HU, at the San Diego River outlet, at Dog Beach, Station id FM-010. Lat/ Long: 32.756700/ -177.251700. | ||||
Temporal Representation: | Samples were collected weekly from January 1999 through October 2002, and April 2003 through December 2007. | ||||
Environmental Conditions: | |||||
QAPP Information: | Quality control for the bacteria analysis portion was conducted in accordance with the County of San Diego, Department Public Health Laboratory Quality Assurance Manual. | ||||
QAPP Information Reference(s): | County of San Diego, 2006. Department Public Health Laboratory, Quality Assurance Manual, December 2006 | ||||
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LOE ID: | 75029 | ||||
Pollutant: | Total Coliform | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Water Contact Recreation | ||||
Number of Samples: | 188 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | Not Specified | ||||
Data Used to Assess Water Quality: | Zero of the 188 geomeans exceeded the objective. | ||||
Data Reference: | Data for Region 9 Beach Watch. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The geometric mean standard for total coliform states that the coliform density shall not exceed 1000 per 100 mL. Water Quality Control Plan for Ocean Waters 2009. | ||||
Objective/Criterion Reference: | California Ocean Plan Water Quality Control Plan Ocean Waters of California 2009 | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Samples were collected at the San Diego River outlet site near Dog Beach. | ||||
Temporal Representation: | Samples were collected from January 2008 to August 2010. | ||||
Environmental Conditions: | |||||
QAPP Information: | The samples were collected for the Beach Watch program. | ||||
QAPP Information Reference(s): | |||||
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LOE ID: | 75028 | ||||
Pollutant: | Total Coliform | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Shellfish Harvesting | ||||
Number of Samples: | 200 | ||||
Number of Exceedances: | 19 | ||||
Data and Information Type: | PATHOGEN MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed bw data for Pacific Ocean Shoreline, San Diego HU, at the San Diego River outlet, at Dog Beach to determine beneficial use support and results are as follows: 19 of 200 samples exceed the criterion for Coliform, Total. | ||||
Data Reference: | Data for Region 9 Beach Watch. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The California Ocean Plan states that at all areas where shellfish may be harvested for human consumption, not more than 10 percent of the samples shall exceed 230 per 100 mL. | ||||
Objective/Criterion Reference: | California Ocean Plan Water Quality Control Plan Ocean Waters of California 2009 | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for Pacific Ocean Shoreline, San Diego HU, at the San Diego River outlet, at Dog Beach was collected at 1 monitoring site [ San Diego River outlet] | ||||
Temporal Representation: | Data was collected over the time period 1/3/2008-8/25/2010. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The samples were collected for the Beach Watch program. | ||||
QAPP Information Reference(s): | |||||
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LOE ID: | 75027 | ||||
Pollutant: | Fecal Coliform | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Water Contact Recreation | ||||
Number of Samples: | 189 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | Not Specified | ||||
Data Used to Assess Water Quality: | Zero of the 189 geomeans exceeded the objective. | ||||
Data Reference: | Data for Region 9 Beach Watch. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The standard for fecal coliform states that the coliform density shall not exceed 200 per 100 mL. Water Quality Control Plan for Ocean Waters 2009. | ||||
Objective/Criterion Reference: | California Ocean Plan Water Quality Control Plan Ocean Waters of California 2009 | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Samples were collected at the San Diego River outlet site at Dog Beach. | ||||
Temporal Representation: | Samples were collected from January 2008 to August 2010. | ||||
Environmental Conditions: | |||||
QAPP Information: | The samples were collected for the beach watch program. | ||||
QAPP Information Reference(s): | |||||
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LOE ID: | 75026 | ||||
Pollutant: | Enterococcus | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Water Contact Recreation | ||||
Number of Samples: | 189 | ||||
Number of Exceedances: | 11 | ||||
Data and Information Type: | Not Specified | ||||
Data Used to Assess Water Quality: | Eleven of the 189 geomeans exceeded the objective. | ||||
Data Reference: | Data for Region 9 Beach Watch. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The geometric mean standard for entercoccus states that the entercoccus density shall not exceed 35 per 100 mL. Water Quality Control Plan for Ocean Waters 2009. | ||||
Objective/Criterion Reference: | California Ocean Plan Water Quality Control Plan Ocean Waters of California 2009 | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Samples were collected at the San Diego River outlet at Dog Beach site. | ||||
Temporal Representation: | Samples were collected from January 2008 to August 2010. | ||||
Environmental Conditions: | |||||
QAPP Information: | The samples were collected for the Beach Watch program. | ||||
QAPP Information Reference(s): | |||||
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LOE ID: | 30397 | ||||
Pollutant: | Total Coliform | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Shellfish Harvesting | ||||
Number of Samples: | 28 | ||||
Number of Exceedances: | 18 | ||||
Data and Information Type: | PWS pathogen monitoring (ambient water) | ||||
Data Used to Assess Water Quality: | Shoreline beach monitoring data was collected by the County of San Diego from January 1999 through October 2002, and April 2003 through December 2007. The number of samples collected for total coliform analysis was 505 with 28 of the samples correlated with a storm event. Eighteen of the storm samples exceeded the single sample maximum total coliform standard for shellfish harvesting. This information will not be used in determining a listing decision, but is of interest to the Regional Board and has been included here as additional anecdotal information. | ||||
Data Reference: | National Weather Service Forecast Office, San Diego, California, Chronological Regional Temperature and Precipitation Listings by Station | ||||
Department of Environmental Health, Ocean & Bay Recreational Water Quality Program, 2007. AB 411 monitoring data 1999 to 2007 | |||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | From the Ocean Plan, the median total coliform density shall not exceed 70 per 100 ml, and not more than 10 percent of the samples shall exceed 230 per 100 ml. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Ocean Waters of California. California Ocean Plan 2005. Sacramento, CA: State Water Resources Control Board, California Environmental Protection Agency | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Samples were collected from the San Diego HU, at the San Diego River outlet, at Dog Beach, Station id FM-010. Lat/ Long: 32.756700/ -177.251700. | ||||
Temporal Representation: | Samples were collected weekly from January 1999 through October 2002, and April 2003 through December 2007. | ||||
Environmental Conditions: | Comparisons were also made for days with matching bacteria and storm event data. A storm event was defined as 0.2 inches of rainfall within a 72 hour period. | ||||
QAPP Information: | Quality control for the bacteria analysis portion of this study was conducted in accordance with the County of San Diego's Quality beach monitoring program. | ||||
QAPP Information Reference(s): | County of San Diego, 2006. Department Public Health Laboratory, Quality Assurance Manual, December 2006 | ||||
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LOE ID: | 30396 | ||||
Pollutant: | Total Coliform | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Shellfish Harvesting | ||||
Number of Samples: | 505 | ||||
Number of Exceedances: | 149 | ||||
Data and Information Type: | PWS pathogen monitoring (ambient water) | ||||
Data Used to Assess Water Quality: | Shoreline beach monitoring data was collected by the County of San Diego from January 1999 through October 2002, and April 2003 through December 2007. The number of samples collected for total coliform analysis was 505 with 149 samples exceeding the single sample maximum total coliform standard for shellfish harvesting. | ||||
Data Reference: | Department of Environmental Health, Ocean & Bay Recreational Water Quality Program, 2007. AB 411 monitoring data 1999 to 2007 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | From the Ocean Plan, the median total coliform density shall not exceed 70 per 100 ml, and not more than 10 percent of the samples shall exceed 230 per 100 ml. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Ocean Waters of California. California Ocean Plan 2005. Sacramento, CA: State Water Resources Control Board, California Environmental Protection Agency | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Samples were collected from the San Diego HU, at the San Diego River outlet, at Dog Beach, Station id FM-010.
Lat/ Long: 32.756700/ -177.251700. |
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Temporal Representation: | Samples were collected weekly from January 1999 through October 2002, and April 2003 through December 2007. | ||||
Environmental Conditions: | |||||
QAPP Information: | Quality control for the bacteria analysis portion of this study was conducted in accordance with the County of San Diego's Quality beach monitoring program. | ||||
QAPP Information Reference(s): | County of San Diego, 2006. Department Public Health Laboratory, Quality Assurance Manual, December 2006 | ||||
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LOE ID: | 77659 | ||||
Pollutant: | Total Coliform | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Shellfish Harvesting | ||||
Number of Samples: | 187 | ||||
Number of Exceedances: | 34 | ||||
Data and Information Type: | PATHOGEN MONITORING | ||||
Data Used to Assess Water Quality: | Thirty-four of the 187 samples exceeded the objective of 70 mpn/100ml applied as a rolling 30 day geomean. | ||||
Data Reference: | Data for Region 9 Beach Watch. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The California Ocean Plan states that at all areas where shellfish may be harvested for human consumption, the median total coliform density shall not exceed 70 per 100 mL. Staff applied the objective as a rolling 30 day geometric mean consistent with other state bacteria objectives and with guidance from the National Shellfish Sanitation Program from which the objectives were taken. | ||||
Objective/Criterion Reference: | California Ocean Plan Water Quality Control Plan Ocean Waters of California 2009 | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | The samples were collected at Pacific Ocean Shoreline, San Diego HU, at the San Diego River outlet, at Dog Beach. | ||||
Temporal Representation: | The samples were collected from January 2008 to August 2010. | ||||
Environmental Conditions: | |||||
QAPP Information: | The samples were collected for the beach watch program. | ||||
QAPP Information Reference(s): | |||||
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LOE ID: | 31393 | ||||
Pollutant: | Fecal Coliform | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Water Contact Recreation | ||||
Number of Samples: | 484 | ||||
Number of Exceedances: | 41 | ||||
Data and Information Type: | PWS pathogen monitoring (ambient water) | ||||
Data Used to Assess Water Quality: | Beach monitoring data was collected by the County of San Diego from January 1999 through October 2002, and April 2003 through December 2007. A total of 508 single samples were collected of which 484 are dry weather (AB411) samples with 41 samples exceeding the single sample water quality objective. | ||||
Data Reference: | Department of Environmental Health, Ocean & Bay Recreational Water Quality Program, 2007. AB 411 monitoring data 1999 to 2007 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Single Sample Maximum: Fecal coliform density shall not exceed 400 per 100 ml;
Geomean: Fecal coliform density shall not exceed 200 per 100ml (SWRCB, 2005). |
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Objective/Criterion Reference: | Water Quality Control Plan Ocean Waters of California. California Ocean Plan 2005. Sacramento, CA: State Water Resources Control Board, California Environmental Protection Agency | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Samples were collected from the San Diego HU, at the San Diego River outlet, at Dog Beach, Station id FM-010. Lat/ Long: 32.756700/ -177.251700. | ||||
Temporal Representation: | Samples were collected weekly from January 1999 through October 2002, and April 2003 through December 2007. | ||||
Environmental Conditions: | |||||
QAPP Information: | Quality control for the bacteria analysis portion was conducted in accordance with the County of San Diego, Department Public Health Laboratory Quality Assurance Manual. | ||||
QAPP Information Reference(s): | County of San Diego, 2006. Department Public Health Laboratory, Quality Assurance Manual, December 2006 | ||||
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LOE ID: | 30418 | ||||
Pollutant: | Indicator Bacteria | ||||
LOE Subgroup: | Health Advisories | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Water Contact Recreation | ||||
Number of Samples: | 2555 | ||||
Number of Exceedances: | 154 | ||||
Data and Information Type: | PWS pathogen monitoring (ambient water) | ||||
Data Used to Assess Water Quality: | For the period from January 2001 to December 2007, there were 154 beach advisory days for this section of shoreline. Bacteriological samples are collected on a weekly basis at ocean and bay locations in San Diego County. When a bacteriological sample exceeds water quality standards, signs are posted indicating that an advisory for waters have exceeded public health standards.
Data and information on the number of beach posting were summarized by the County of San Diego in their annual San Diego County Beach Closure and Advisory Reports. The reporting period was from January 2001 - December 2007. Data used was the number of days the beach was advisories were issued when the ocean or bay failed to meet the bacteriological standards. |
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Data Reference: | Department of Environmental Health, Land and Water Quality Division. San Diego County Beach Closure and Advisory Report | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | California Code of Regulations. Title 17, Section 7960.
(a) When a public beach or public water-contact sports area fails to meet any of the standards as set forth in Section 7957 or 7958 above, the local health officer or the Department, after taking into consideration the causes therefor, may at his or its discretion close, post with warning signs, or otherwise restrict use of said public beach or public water-contact sports area, until such time as corrective action has been taken and the standards as set forth in 7957 and 7958 above are met. |
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Objective/Criterion Reference: | California Code of Regulations, Title 17, Section 7960 | ||||
Evaluation Guideline: | |||||
Guideline Reference: | Water Quality Control Plan Ocean Waters of California. California Ocean Plan 2005. Sacramento, CA: State Water Resources Control Board, California Environmental Protection Agency | ||||
Spatial Representation: | Beach advisories were posted at San Diego River Mouth at Dog Beach, San Diego, CA. | ||||
Temporal Representation: | The beach advisory covers the time frame of January January 2001 to December 2007. | ||||
Environmental Conditions: | |||||
QAPP Information: | Samples were collected in compliance with County of San Diego's Quality Assessment/Quality Control document | ||||
QAPP Information Reference(s): | County of San Diego, 2006. Department Public Health Laboratory, Quality Assurance Manual, December 2006 | ||||
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LOE ID: | 30412 | ||||
Pollutant: | Total Coliform | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Water Contact Recreation | ||||
Number of Samples: | 505 | ||||
Number of Exceedances: | 10 | ||||
Data and Information Type: | PWS pathogen monitoring (ambient water) | ||||
Data Used to Assess Water Quality: | Shoreline beach monitoring data was collected by the County of San Diego from January 1999 through October 2002, and April 2003 through December 2007. The number of samples collected for total coliform analysis was 505. Ten of the samples exceeded the single sample maximum total coliform standard. | ||||
Data Reference: | National Weather Service Forecast Office, San Diego, California, Chronological Regional Temperature and Precipitation Listings by Station | ||||
Department of Environmental Health, Ocean & Bay Recreational Water Quality Program, 2007. AB 411 monitoring data 1999 to 2007 | |||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Geomean: Total coliform density shall not exceed 1,000 per 100ml (SWRCB, 2005).
Single Sample Maximum: Total coliform density shall not exceed 10,000 per 100ml; |
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Objective/Criterion Reference: | Water Quality Control Plan Ocean Waters of California. California Ocean Plan 2005. Sacramento, CA: State Water Resources Control Board, California Environmental Protection Agency | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Samples were collected from the San Diego HU, at the San Diego River outlet, at Dog Beach, Station id FM-010. Lat/ Long: 32.756700/ -177.251700. | ||||
Temporal Representation: | Samples were collected weekly from January 1999 through October 2002, and April 2003 through December 2007. | ||||
Environmental Conditions: | |||||
QAPP Information: | Quality control for the bacteria analysis portion of this study was conducted in accordance with the County of San Diego's Quality beach monitoring program. | ||||
QAPP Information Reference(s): | County of San Diego, 2006. Department Public Health Laboratory, Quality Assurance Manual, December 2006 | ||||
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LOE ID: | 30413 | ||||
Pollutant: | Total Coliform | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Water Contact Recreation | ||||
Number of Samples: | 87 | ||||
Number of Exceedances: | 1 | ||||
Data and Information Type: | PWS pathogen monitoring (ambient water) | ||||
Data Used to Assess Water Quality: | Shoreline beach monitoring data was collected by the County of San Diego from Samples were collected from Samples were collected weekly from January 1999 through October 2002, and April 2003 through December 2007. The number of samples collected for total coliform analysis was 505 with 87 monthly geomeans calculated. Only one of the geomeans exceeded the geomean water quality objective. | ||||
Data Reference: | National Weather Service Forecast Office, San Diego, California, Chronological Regional Temperature and Precipitation Listings by Station | ||||
Department of Environmental Health, Ocean & Bay Recreational Water Quality Program, 2007. AB 411 monitoring data 1999 to 2007 | |||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Geomean: Total coliform density shall not exceed 1,000 per 100ml (SWRCB, 2005).
Single Sample Maximum: Total coliform density shall not exceed 10,000 per 100ml; |
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Objective/Criterion Reference: | Water Quality Control Plan Ocean Waters of California. California Ocean Plan 2005. Sacramento, CA: State Water Resources Control Board, California Environmental Protection Agency | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Samples were collected from the San Diego HU, at the San Diego River outlet, at Dog Beach, Station id FM-010. Lat/ Long: 32.756700/ -177.251700. | ||||
Temporal Representation: | Samples were collected weekly from January 1999 through October 2002, and April 2003 through December 2007. | ||||
Environmental Conditions: | |||||
QAPP Information: | Quality control for the bacteria analysis portion of this study was conducted in accordance with the County of San Diego's Quality beach monitoring program. | ||||
QAPP Information Reference(s): | County of San Diego, 2006. Department Public Health Laboratory, Quality Assurance Manual, December 2006 | ||||
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LOE ID: | 30640 | ||||
Pollutant: | Enterococcus | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Water Contact Recreation | ||||
Number of Samples: | 465 | ||||
Number of Exceedances: | 57 | ||||
Data and Information Type: | PWS pathogen monitoring (ambient water) | ||||
Data Used to Assess Water Quality: | Beach monitoring data was collected by the County of San Diego from January 1999 through October 2002, and April 2003 through December 2007. A total of 492 single samples were collected of which 465 are dry weather (AB411) samples with 57 samples exceeding the single sample water quality objective. | ||||
Data Reference: | Department of Environmental Health, Ocean & Bay Recreational Water Quality Program, 2007. AB 411 monitoring data 1999 to 2007 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Single Sample Maximum: Enterococcus density shall not exceed 104 per 100 ml;
Geomean: Enterococcus density shall not exceed 35 per 100 ml (SWRCB, 2005). |
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Objective/Criterion Reference: | Water Quality Control Plan Ocean Waters of California. California Ocean Plan 2005. Sacramento, CA: State Water Resources Control Board, California Environmental Protection Agency | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Samples were collected from the San Diego HU, at the San Diego River outlet, at Dog Beach, Station id FM-010. Lat/ Long: 32.756700/ -177.251700. | ||||
Temporal Representation: | Samples were collected weekly from January 1999 through October 2002, and April 2003 through December 2007. | ||||
Environmental Conditions: | |||||
QAPP Information: | Quality control for the bacteria analysis portion was conducted in accordance with the County of San Diego, Department Public Health Laboratory Quality Assurance Manual. | ||||
QAPP Information Reference(s): | County of San Diego, 2006. Department Public Health Laboratory, Quality Assurance Manual, December 2006 | ||||
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LOE ID: | 30369 | ||||
Pollutant: | Indicator Bacteria | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Water Contact Recreation | ||||
Number of Samples: | 1501 | ||||
Number of Exceedances: | 310 | ||||
Data and Information Type: | PATHOGEN MONITORING | ||||
Data Used to Assess Water Quality: | For the 2008 assessment , the 2006 listed coastline 'Pacific Ocean Shoreline, San Diego HU' was split into smaller segments and each represents an area near the sampling location of the data being assessed. This is a copy of the 2006 listing placeholder LOE for Pacific Ocean Shoreline, San Diego HU and is considered by the Regional Board to be applicable to this more specific segment (at the San Diego River outlet, at Dog Beach) formed from the split.
A total of 1,501 analyses were performed from 1999 through 2003. Of these, there were 75 out of 476 exceedances for enterococcus standards, 56 out of 493 exceedances for single-sample fecal coliform criteria and 96 our of 493 30-day average exceedances. For total coliform, there were 83 out of 532 exceedances. Exceedances occurred during both wet and dry seasons (City of San Diego, 2004). |
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Data Reference: | Placeholder reference 2006 303(d) | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | San Diego RWQCB Basin Plan 1994:
Enterococcus: 35 colonies/100 ml (30-day average), 104 colonies per 100 ml (single sample). Fecal coliform (FC): 200 colonies/100 mL (30-day average), 400 colonies/100mL(single sample). Total coliform (TC): 1,000 colonies/100 mL (30-day average), 10,000 colonies/100 mL (single sample, FC/TC ratio is <0.1), 1,000 colonies/100mL (single sample, FC/TC ratio is >0.1). |
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Objective/Criterion Reference: | Placeholder reference 2006 303(d) | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | San Diego River Mouth (a.k.a. Dog Beach). This site is located on the south side of the mouth of the San Diego River. "Ten stations were monitored at the San Diego River mouth site during this time: one at the sampling site, eight as far as 2,000 ft. to the left, and one 100 ft to the right of the site." | ||||
Temporal Representation: | Data were available for this assessment from 01/1999 through 10/2003. Samples were collected during both the wet and dry seasons. | ||||
Environmental Conditions: | There were several sewage spills from 1999 through 2003 that impacted the site. However, there were not enough elevated bacterial levels associated with the spills to reduce the total number of exceedances below the allowable threshold.
Southern California has three distinct weather/hydrological conditions: summer dry weather, winter dry weather, and storm events. The data set used in this analysis includes summer and winter season data. Whether or not storm event samples are included in the data set are not known. For future water quality assessments, the RWQCB may classify bacteria samples as summer dry, winter dry, or storm event samples to ensure adequate representation of all three weather/hydrological conditions. |
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QAPP Information: | QA Info Missing | ||||
QAPP Information Reference(s): | |||||
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LOE ID: | 31233 | ||||
Pollutant: | Enterococcus | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Water Contact Recreation | ||||
Number of Samples: | 60 | ||||
Number of Exceedances: | 13 | ||||
Data and Information Type: | PWS pathogen monitoring (ambient water) | ||||
Data Used to Assess Water Quality: | Beach monitoring data was collected by the County of San Diego from April 1999 through October 2007. A total of 440 dry month (April through October) single samples were collected with 60 dry month geomeans calculated. Thirteen of the 60 geomeans exceeded the geomean water quality objective. | ||||
Data Reference: | Department of Environmental Health, Ocean & Bay Recreational Water Quality Program, 2007. AB 411 monitoring data 1999 to 2007 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Single Sample Maximum: Enterococcus density shall not exceed 104 per 100 ml;
Geomean: Enterococcus density shall not exceed 35 per 100 ml (SWRCB, 2005). |
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Objective/Criterion Reference: | Water Quality Control Plan Ocean Waters of California. California Ocean Plan 2005. Sacramento, CA: State Water Resources Control Board, California Environmental Protection Agency | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Samples were collected from the San Diego HU, at the San Diego River outlet, at Dog Beach, Station id FM-010. Lat/ Long: 32.756700/ -177.251700. | ||||
Temporal Representation: | Samples were collected weekly from April 1999 through October 2007. | ||||
Environmental Conditions: | |||||
QAPP Information: | Quality control for the bacteria analysis portion was conducted in accordance with the County of San Diego, Department Public Health Laboratory Quality Assurance Manual. | ||||
QAPP Information Reference(s): | County of San Diego, 2006. Department Public Health Laboratory, Quality Assurance Manual, December 2006 | ||||