Water Body Name: | Mission Bay Shoreline, at Leisure Lagoon |
Water Body ID: | CAC9064000020090422211717 |
Water Body Type: | Coastal & Bay Shoreline |
Lines of Evidence (LOEs) for Decision ID 16669 |
LOE ID: | 28599 |
Pollutant: | Fecal Coliform |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Water Contact Recreation |
Number of Samples: | 73 |
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 January 1999 through October 2007. A total of 348 single samples were collected and 73 geomeans calculated. One of the 73 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. |
Water Quality Objective/Criterion: | Geomean; Fecal coliform density shall not exceed 200 per 100 ml;
Single Sample Maximum; Fecal coliform density shall not exceed 400 per 100 ml (SWRCB, 2005). |
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 at Leisure Lagoon near storm drain, San Diego, California. Station identification number is MB-050. |
Temporal Representation: | Samples were collected from January 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. |
| |
LOE ID: | 30115 |
Pollutant: | Indicator Bacteria |
LOE Subgroup: | Health Advisories |
Matrix: | -N/A |
Fraction: | None |
Beneficial Use: | Water Contact Recreation |
Number of Samples: | 2555 |
Number of Exceedances: | 68 |
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 68 beach advisory days for this location. When a bacteriological sample exceeds water quality standards, signs are posted indicating that 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 to December 2007. Data used was the number of days the beach was posted with an Advisory when the ocean or bay failed to meet the bacteriological standards. |
Data Reference: | County of Orange. March 2007. Annual Ocean and Bay Water Quality Report, 2006. |
Department of Environmental Health, Land and Water Quality Division. San Diego County Beach Closure and Advisory Report. | |
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. |
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: | Bacteriological monitoring samples were collected at Leisure Lagoon in Mission Bay. |
Temporal Representation: | The beach advisory covers the time frame of January 2001 -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. |
| |
LOE ID: | 28593 |
Pollutant: | Fecal Coliform |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Water Contact Recreation |
Number of Samples: | 348 |
Number of Exceedances: | 23 |
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 2007. A total of 348 single samples were collected with 23 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. |
Water Quality Objective/Criterion: | Geomean; Fecal coliform density shall not exceed 200 per 100 ml;
Single Sample Maximum; Fecal coliform density shall not exceed 400 per 100 ml (SWRCB, 2005). |
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 at Leisure Lagoon near storm drain, San Diego, California. Station identification number is MB-050. |
Temporal Representation: | Samples were collected from January 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. |
| |
LOE ID: | 28594 |
Pollutant: | Fecal Coliform |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Water Contact Recreation |
Number of Samples: | 18 |
Number of Exceedances: | 7 |
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 2007. A total of 348 single samples were collected with 18 samples correlated with a storm event. Seven of the 18 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. | |
Water Quality Objective/Criterion: | Geomean; Fecal coliform density shall not exceed 200 per 100 ml;
Single Sample Maximum; Fecal coliform density shall not exceed 400 per 100 ml (SWRCB, 2005). |
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 at Leisure Lagoon near storm drain, San Diego, California. Station identification number is MB-050. |
Temporal Representation: | Samples were collected from January 1999 through October 2007. |
Environmental Conditions: | Comparisons 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.
Analyzing only storm water bacteria data is important because the majority of beach monitoring data covers the months of April through October. The data may not capture the full impacts of seasonal storm events and high bacteria levels due to storm water runoff because much of the wet season for Southern California occurs in November through March. |
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. |
| |
LOE ID: | 30346 |
Pollutant: | Indicator Bacteria |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Water Contact Recreation |
Number of Samples: | 2933 |
Number of Exceedances: | 959 |
Data and Information Type: | PATHOGEN MONITORING |
Data Used to Assess Water Quality: | Below is a copy of the 2006 LOE information for the data used to support the listing of Mission Bay Shoreline:
Available data indicate sufficient exceedances of bacterial indicator objectives. There were 576 out of 3662 samples exceeding the single sample maximum for enterococci, 959 out of 2933 exceedances of the geomean enterococci, and 333 out samples exceeding the single sample maximum for fecal coliform (USEPA, 2007). |
Data Reference: | Placeholder reference 2006 303(d) |
Water Quality Objective/Criterion: | Title 17 C.C.R. Section 7958 states: Based on a single sample, the density of bacteria in water from each sampling station at a public beach or public water contact sports area shall not exceed:
(A) 1,000 total coliform bacteria per 100 milliliters, if the ratio of fecal/total coliform bacteria exceeds 0.1; or (B) 10,000 total coliform bacteria per 100 milliliters; or (C) 400 fecal coliform bacteria per 100 milliliters; or (D) 104 enterococcus bacteria per 100 milliliters. Based on the mean of the logarithms of the results of at least five weekly samples during any 30-day sampling period, the density of bacteria in water from any sampling station at a public beach or public water contact sports area, shall not exceed: (A) 1,000 total coliform bacteria per 100 milliliters; or (B) 200 fecal coliform bacteria per 100 milliliters; or (C) 35 enterococcus bacteria per 100 milliliters (DHS, 1999). |
Objective/Criterion Reference: | Placeholder reference 2006 303(d) |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | In 2006, data from sampling sites along the Mission Bay shoreline were aggregated for the assessment. For 2008, the 2006 Mission Bay Shoreline segment has been split into smaller segments and each represents an area near the sampling location of the data being assessed. 'Mission Bay Shoreline, at Leisure Lagoon' is one of the sampling locations for Mission Bay Shoreline and is considered to be part of the original listing |
Temporal Representation: | From 03/21/2000-10/30/2005. |
Environmental Conditions: | |
QAPP Information: | Data record: 2000-2005, San Diego County Health Dept. |
QAPP Information Reference(s): |
Lines of Evidence (LOEs) for Decision ID 16667 |
LOE ID: | 28596 |
Pollutant: | Enterococcus |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Water Contact Recreation |
Number of Samples: | 18 |
Number of Exceedances: | 11 |
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 2007. A total of 394 single samples were collected with 18 samples correlated with a storm event. Eleven of the 18 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. | |
Water Quality Objective/Criterion: | Geomean: Enterococcus density shall not exceed 35 per 100 ml.
Single Sample Maximum: Enterococcus density shall not exceed 104 per 100 ml (SWRCB, 2005). |
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 at Leisure Lagoon near storm drain, San Diego, California. Station identification number is MB-050. |
Temporal Representation: | Samples were collected from January 1999 through October 2007. |
Environmental Conditions: | Comparisons 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.
Analyzing only storm water bacteria data is important because the majority of beach monitoring data covers the months of April through October. The data may not capture the full impacts of seasonal storm events and high bacteria levels due to storm water runoff because much of the wet season for Southern California occurs in November through March. |
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. |
| |
LOE ID: | 28600 |
Pollutant: | Enterococcus |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Water Contact Recreation |
Number of Samples: | 80 |
Number of Exceedances: | 17 |
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 2007. A total of 394 single samples were collected with 80 monthly geomeans calculated. Seventeen of the 80 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. |
Water Quality Objective/Criterion: | Geomean: Enterococcus density shall not exceed 35 per 100 ml.
Single Sample Maximum: Enterococcus density shall not exceed 104 per 100 ml (SWRCB, 2005). |
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 at Leisure Lagoon near storm drain, San Diego, California. Station identification number is MB-050. |
Temporal Representation: | Samples were collected from January 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. |
| |
LOE ID: | 28595 |
Pollutant: | Enterococcus |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Water Contact Recreation |
Number of Samples: | 394 |
Number of Exceedances: | 42 |
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 2007. A total of 394 single samples were collected with 42 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. |
Water Quality Objective/Criterion: | Geomean: Enterococcus density shall not exceed 35 per 100 ml.
Single Sample Maximum: Enterococcus density shall not exceed 104 per 100 ml (SWRCB, 2005). |
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 at Leisure Lagoon near storm drain, San Diego, California. Station identification number is MB-050. |
Temporal Representation: | Samples were collected from January 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. |
| |
LOE ID: | 30346 |
Pollutant: | Indicator Bacteria |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Water Contact Recreation |
Number of Samples: | 2933 |
Number of Exceedances: | 959 |
Data and Information Type: | PATHOGEN MONITORING |
Data Used to Assess Water Quality: | Below is a copy of the 2006 LOE information for the data used to support the listing of Mission Bay Shoreline:
Available data indicate sufficient exceedances of bacterial indicator objectives. There were 576 out of 3662 samples exceeding the single sample maximum for enterococci, 959 out of 2933 exceedances of the geomean enterococci, and 333 out samples exceeding the single sample maximum for fecal coliform (USEPA, 2007). |
Data Reference: | Placeholder reference 2006 303(d) |
Water Quality Objective/Criterion: | Title 17 C.C.R. Section 7958 states: Based on a single sample, the density of bacteria in water from each sampling station at a public beach or public water contact sports area shall not exceed:
(A) 1,000 total coliform bacteria per 100 milliliters, if the ratio of fecal/total coliform bacteria exceeds 0.1; or (B) 10,000 total coliform bacteria per 100 milliliters; or (C) 400 fecal coliform bacteria per 100 milliliters; or (D) 104 enterococcus bacteria per 100 milliliters. Based on the mean of the logarithms of the results of at least five weekly samples during any 30-day sampling period, the density of bacteria in water from any sampling station at a public beach or public water contact sports area, shall not exceed: (A) 1,000 total coliform bacteria per 100 milliliters; or (B) 200 fecal coliform bacteria per 100 milliliters; or (C) 35 enterococcus bacteria per 100 milliliters (DHS, 1999). |
Objective/Criterion Reference: | Placeholder reference 2006 303(d) |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | In 2006, data from sampling sites along the Mission Bay shoreline were aggregated for the assessment. For 2008, the 2006 Mission Bay Shoreline segment has been split into smaller segments and each represents an area near the sampling location of the data being assessed. 'Mission Bay Shoreline, at Leisure Lagoon' is one of the sampling locations for Mission Bay Shoreline and is considered to be part of the original listing |
Temporal Representation: | From 03/21/2000-10/30/2005. |
Environmental Conditions: | |
QAPP Information: | Data record: 2000-2005, San Diego County Health Dept. |
QAPP Information Reference(s): | |
| |
LOE ID: | 30115 |
Pollutant: | Indicator Bacteria |
LOE Subgroup: | Health Advisories |
Matrix: | -N/A |
Fraction: | None |
Beneficial Use: | Water Contact Recreation |
Number of Samples: | 2555 |
Number of Exceedances: | 68 |
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 68 beach advisory days for this location. When a bacteriological sample exceeds water quality standards, signs are posted indicating that 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 to December 2007. Data used was the number of days the beach was posted with an Advisory when the ocean or bay failed to meet the bacteriological standards. |
Data Reference: | County of Orange. March 2007. Annual Ocean and Bay Water Quality Report, 2006. |
Department of Environmental Health, Land and Water Quality Division. San Diego County Beach Closure and Advisory Report. | |
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. |
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: | Bacteriological monitoring samples were collected at Leisure Lagoon in Mission Bay. |
Temporal Representation: | The beach advisory covers the time frame of January 2001 -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. |
Lines of Evidence (LOEs) for Decision ID 16670 |
LOE ID: | 28591 |
Pollutant: | Total Coliform |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Water Contact Recreation |
Number of Samples: | 391 |
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 2007. A total of 391 single samples were collected with nine 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. |
Water Quality Objective/Criterion: | Geomean: Total coliform density shall not exceed 1,000 per 100ml;
Single Sample Maximum: Total coliform density shall not exceed 10,000 per 100ml (SWRCB, 2005). |
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 at Leisure Lagoon near storm drain, San Diego, California. Station identification number is MB-050. |
Temporal Representation: | Samples were collected from January 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. |
| |
LOE ID: | 28590 |
Pollutant: | Total Coliform |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Shellfish Harvesting |
Number of Samples: | 18 |
Number of Exceedances: | 12 |
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 2007. A total of 391 single samples were collected with 18 samples correlated with a storm event. Twelve of the 18 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. | |
Water Quality Objective/Criterion: | From the Ocean Plan the median coliform density shall not exceed 70 per 100ml, and not more than 10 percent of the samples shall exceed 230 per 100ml (SWRCB, 2005). |
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 at Leisure Lagoon near storm drain, San Diego, California. Station identification number is MB-050. |
Temporal Representation: | Samples were collected from January 1999 through October 2007. |
Environmental Conditions: | Comparisons 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.
Analyzing only storm water bacteria data is important because the majority of beach monitoring data covers the months of April through October. The data may not capture the full impacts of seasonal storm events and high bacteria levels due to storm water runoff because much of the wet season for Southern California occurs in November through March. |
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. |
| |
LOE ID: | 28589 |
Pollutant: | Total Coliform |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Shellfish Harvesting |
Number of Samples: | 392 |
Number of Exceedances: | 114 |
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 2007. A total of 392 single samples were collected with 114 samples exceeded 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. |
Water Quality Objective/Criterion: | From the Ocean Plan the median coliform density shall not exceed 70 per 100ml, and not more than 10 percent of the samples shall exceed 230 per 100ml (SWRCB, 2005). |
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 at Leisure Lagoon near storm drain, San Diego, California. Station identification number is MB-050. |
Temporal Representation: | Samples were collected from January 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. |
| |
LOE ID: | 30346 |
Pollutant: | Indicator Bacteria |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Water Contact Recreation |
Number of Samples: | 2933 |
Number of Exceedances: | 959 |
Data and Information Type: | PATHOGEN MONITORING |
Data Used to Assess Water Quality: | Below is a copy of the 2006 LOE information for the data used to support the listing of Mission Bay Shoreline:
Available data indicate sufficient exceedances of bacterial indicator objectives. There were 576 out of 3662 samples exceeding the single sample maximum for enterococci, 959 out of 2933 exceedances of the geomean enterococci, and 333 out samples exceeding the single sample maximum for fecal coliform (USEPA, 2007). |
Data Reference: | Placeholder reference 2006 303(d) |
Water Quality Objective/Criterion: | Title 17 C.C.R. Section 7958 states: Based on a single sample, the density of bacteria in water from each sampling station at a public beach or public water contact sports area shall not exceed:
(A) 1,000 total coliform bacteria per 100 milliliters, if the ratio of fecal/total coliform bacteria exceeds 0.1; or (B) 10,000 total coliform bacteria per 100 milliliters; or (C) 400 fecal coliform bacteria per 100 milliliters; or (D) 104 enterococcus bacteria per 100 milliliters. Based on the mean of the logarithms of the results of at least five weekly samples during any 30-day sampling period, the density of bacteria in water from any sampling station at a public beach or public water contact sports area, shall not exceed: (A) 1,000 total coliform bacteria per 100 milliliters; or (B) 200 fecal coliform bacteria per 100 milliliters; or (C) 35 enterococcus bacteria per 100 milliliters (DHS, 1999). |
Objective/Criterion Reference: | Placeholder reference 2006 303(d) |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | In 2006, data from sampling sites along the Mission Bay shoreline were aggregated for the assessment. For 2008, the 2006 Mission Bay Shoreline segment has been split into smaller segments and each represents an area near the sampling location of the data being assessed. 'Mission Bay Shoreline, at Leisure Lagoon' is one of the sampling locations for Mission Bay Shoreline and is considered to be part of the original listing |
Temporal Representation: | From 03/21/2000-10/30/2005. |
Environmental Conditions: | |
QAPP Information: | Data record: 2000-2005, San Diego County Health Dept. |
QAPP Information Reference(s): | |
| |
LOE ID: | 28598 |
Pollutant: | Total Coliform |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Water Contact Recreation |
Number of Samples: | 80 |
Number of Exceedances: | 3 |
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 2007. A total of 391 single samples were collected with 80 monthly geomeans calculated. Three of the 80 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. |
Water Quality Objective/Criterion: | Geomean: Total coliform density shall not exceed 1,000 per 100ml;
Single Sample Maximum: Total coliform density shall not exceed 10,000 per 100ml (SWRCB, 2005). |
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 at Leisure Lagoon near storm drain, San Diego, California. Station identification number is MB-050. |
Temporal Representation: | Samples were collected from January 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. |
| |
LOE ID: | 30115 |
Pollutant: | Indicator Bacteria |
LOE Subgroup: | Health Advisories |
Matrix: | -N/A |
Fraction: | None |
Beneficial Use: | Water Contact Recreation |
Number of Samples: | 2555 |
Number of Exceedances: | 68 |
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 68 beach advisory days for this location. When a bacteriological sample exceeds water quality standards, signs are posted indicating that 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 to December 2007. Data used was the number of days the beach was posted with an Advisory when the ocean or bay failed to meet the bacteriological standards. |
Data Reference: | County of Orange. March 2007. Annual Ocean and Bay Water Quality Report, 2006. |
Department of Environmental Health, Land and Water Quality Division. San Diego County Beach Closure and Advisory Report. | |
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. |
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: | Bacteriological monitoring samples were collected at Leisure Lagoon in Mission Bay. |
Temporal Representation: | The beach advisory covers the time frame of January 2001 -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: | 28592 |
Pollutant: | Total Coliform |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Water Contact Recreation |
Number of Samples: | 18 |
Number of Exceedances: | 3 |
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 2007. A total of 391 single samples were collected with 18 samples correlated with a storm event. Three of the 18 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. | |
Water Quality Objective/Criterion: | Geomean: Total coliform density shall not exceed 1,000 per 100ml;
Single Sample Maximum: Total coliform density shall not exceed 10,000 per 100ml (SWRCB, 2005). |
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 at Leisure Lagoon near storm drain, San Diego, California. Station identification number is MB-050. |
Temporal Representation: | Samples were collected from January 1999 through October 2007. |
Environmental Conditions: | Comparisons 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.
Analyzing only storm water bacteria data is important because the majority of beach monitoring data covers the months of April through October. The data may not capture the full impacts of seasonal storm events and high bacteria levels due to storm water runoff because much of the wet season for Southern California occurs in November through March. |
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. |