Final California 2020 Integrated Report (303(d) List/305(b) Report)

Supporting Information

Regional Board 9 - San Diego Region

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	127986	Region 9
Pacific Ocean Shoreline, San Diego HU, at the San Diego River outlet, at Dog Beach

Pollutant:	Indicator Bacteria
Final Listing Decision:	Do Not Delist from 303(d) list (being addressed with USEPA approved TMDL)
Last Listing Cycle's Final Listing Decision:	Do Not Delist from 303(d) list (being addressed with USEPA approved TMDL)(2018)
Revision Status	Revised
Sources:	A Source Unknown
TMDL Name:	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 4.3 of the Listing Policy. Under section 4.3 a single line of evidence is necessary to assess listing status. Four lines of evidence are available in the administrative record to assess this pollutant. Seventy-nine of the 421 samples exceed the GM threshold for Enterococci. Zero of the 365 samples exceed the GM threshold for Fecal Coliform. 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. Seventy-nine of 421 samples exceeded the Enterococci water quality threshold, and this exceeds the allowable frequency listed in Table 4.2 of the Listing Policy. 4. The TMDL was approved by USEPA on 6/22/2011. 5. Pursuant to section 4.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. The Water Quality Control Plan for Ocean Waters (“Ocean Plan”) contains two bacteria water quality objectives applicable to the REC-1 beneficial use: a fecal coliform water quality objective and an enterococci water quality objective. This waterbody is being considered for placement on or removal from the CWA section 303(d) List under section 3.3 or 4.3 of the Listing Policy, as applicable, using the fecal coliform and enterococci objectives. In accordance with section 6.1.5.3 of the Listing Policy, data should be representative of the critical timing that the pollutant is expected to impact the waterbody. Indicator bacteria (total coliform, fecal coliform, E. coli, enterococci) populations may fluctuate substantially on a daily, seasonal, or yearly basis. Lacking constant inputs, they do not persist in the environment for a long period and effects are of relatively short duration. As a result, the historic levels of indicator bacteria in the waterbody may be a poor indicator of current risks to human health, particularly when more recent data are available to sufficiently assess the water quality standard. Additionally, water quality conditions in waterbodies may change as a result of management actions that have been implemented to address bacteria. Unrepresentative data may result in incorrectly placing or not placing a water body segment on the list, which could result in the unnecessary expenditure of public resources or missing a human health problem. Historic lines of evidence for data collected prior to 2010 were evaluated pursuant to these considerations and were not used to assess water quality standards attainment because they do not meet the temporal representation requirements of section 6.1.5.3 of the Listing Policy. For enterococci data, Listing Policy sections 3.3 and 4.3 instructs to use the binomial distribution table in sections 3.2 and 4.2, as applicable. To use the binomial table that uses a four percent exceedance frequency, the data must be collected from coastal beaches from April 1 through October 31 only.

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:	The Water Quality Control Plan for Ocean Waters (“Ocean Plan”) contains two bacteria water quality objectives applicable to the REC-1 beneficial use: a fecal coliform water quality objective and an enterococci water quality objective. This waterbody is being considered for placement on or removal from the CWA section 303(d) List under section 3.3 or 4.3 of the Listing Policy, as applicable, using the fecal coliform and enterococci objectives. In accordance with section 6.1.5.3 of the Listing Policy, data should be representative of the critical timing that the pollutant is expected to impact the waterbody. Indicator bacteria (total coliform, fecal coliform, E. coli, enterococci) populations may fluctuate substantially on a daily, seasonal, or yearly basis. Lacking constant inputs, they do not persist in the environment for a long period and effects are of relatively short duration. As a result, the historic levels of indicator bacteria in the waterbody may be a poor indicator of current risks to human health, particularly when more recent data are available to sufficiently assess the water quality standard. Additionally, water quality conditions in waterbodies may change as a result of management actions that have been implemented to address bacteria. Unrepresentative data may result in incorrectly placing or not placing a water body segment on the list, which could result in the unnecessary expenditure of public resources or missing a human health problem. Historic lines of evidence for data collected prior to 2010 were evaluated pursuant to these considerations and were not used to assess water quality standards attainment because they do not meet the temporal representation requirements of section 6.1.5.3 of the Listing Policy. For enterococci data, Listing Policy sections 3.3 and 4.3 instructs to use the binomial distribution table in sections 3.2 and 4.2, as applicable. To use the binomial table that uses a four percent exceedance frequency, the data must be collected from coastal beaches from April 1 through October 31 only.

State Board Decision Recommendation:	After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.

Line of Evidence (LOE) for Decision ID 127986, Indicator Bacteria	Region 9
Pacific Ocean Shoreline, San Diego HU, at the San Diego River outlet, at Dog Beach

LOE ID:

220692

Pollutant:

Total Coliform

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Shellfish Harvesting

Number of Samples:

Number of Exceedances:

Data and Information Type:

PATHOGEN MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed data for Pacific Ocean Shoreline, San Diego HU, at the San Diego River outlet, at Dog Beach to determine beneficial use support and the results are as follows: 19 of the 58 samples exceeded the water quality threshold for Coliform, Total. The water quality threshold for shellfish is based on the median concentration of Total Coliform at each station, and is calculated as a 30-day rolling median.

Data Reference:

Water data for the 2020/2022 integrated report in Region 9.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

California Ocean Plan (SWRCB 2019) states that the median total coliform density shall not exceed 70 per 100 mL.

Objective/Criterion Reference:

SWRCB. 2005. Water Quality Control Plan, Ocean Waters of California (Ocean Plan). California Environmental Protection Agency, State Water Resources Control Board. February 2, 2019

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site(s), station(s): SDR-DB

Temporal Representation:

The samples were collected between the days of 2013-06-27 and 2014-11-13 .

Environmental Conditions:

QAPP Information:

AMEC Foster Wheeler. 2015. San Diego River Watershed Quality Assurance Project Plan Bacteria TMDL Monitoring Program ., Weston Solutions, Inc.. 2015. San Luis Rey River Watershed Quality Assurance Project Plan.

QAPP Information Reference(s):

San Luis Rey River Watershed Quality Assurance Project Plan

QAPP Information Reference(s):

San Diego River Watershed Quality Assurance Project Plan Bacteria TMDL Monitoring Program

Line of Evidence (LOE) for Decision ID 127986, Indicator Bacteria	Region 9
Pacific Ocean Shoreline, San Diego HU, at the San Diego River outlet, at Dog Beach

LOE ID:

220663

Pollutant:

Total Coliform

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Shellfish Harvesting

Number of Samples:

Number of Exceedances:

Data and Information Type:

PATHOGEN MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed data for Pacific Ocean Shoreline, San Diego HU, at the San Diego River outlet, at Dog Beach to determine beneficial use support and the results are as follows: 34 of the 58 samples exceeded the water quality threshold for Coliform, Total. The water quality threshold is based on a 10% exceedance rate that is calculated for a 30-Day peroid.

Data Reference:

Water data for the 2020/2022 integrated report in Region 9.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

California Ocean Plan (SWRCB 2019) states that not more than 10 percent of the total coliform samples shall exceed 230 per 100 mL.

Objective/Criterion Reference:

SWRCB. 2005. Water Quality Control Plan, Ocean Waters of California (Ocean Plan). California Environmental Protection Agency, State Water Resources Control Board. February 2, 2019

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site(s), station(s): SDR-DB

Temporal Representation:

The samples were collected between the days of 2013-06-27 and 2014-11-13 .

Environmental Conditions:

QAPP Information:

QAPP Information Reference(s):

San Luis Rey River Watershed Quality Assurance Project Plan

QAPP Information Reference(s):

San Diego River Watershed Quality Assurance Project Plan Bacteria TMDL Monitoring Program

Line of Evidence (LOE) for Decision ID 127986, Indicator Bacteria	Region 9
Pacific Ocean Shoreline, San Diego HU, at the San Diego River outlet, at Dog Beach

LOE ID:

30400

Pollutant:

Enterococcus

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Water Contact Recreation

Number of Samples:

Number of Exceedances:

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:

Department of Environmental Health, Ocean & Bay Recreational Water Quality Program, 2007. AB 411 monitoring data 1999 to 2007

National Weather Service Forecast Office, San Diego, California, Chronological Regional Temperature and Precipitation Listings by Station

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.

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

Line of Evidence (LOE) for Decision ID 127986, Indicator Bacteria	Region 9
Pacific Ocean Shoreline, San Diego HU, at the San Diego River outlet, at Dog Beach

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:

Data and Information Type:

PWS pathogen monitoring (ambient water)

Data Used to Assess Water Quality:

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).

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

Line of Evidence (LOE) for Decision ID 127986, Indicator Bacteria	Region 9
Pacific Ocean Shoreline, San Diego HU, at the San Diego River outlet, at Dog Beach

LOE ID:

31233

Pollutant:

Enterococcus

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Water Contact Recreation

Number of Samples:

Number of Exceedances:

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).

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

Line of Evidence (LOE) for Decision ID 127986, Indicator Bacteria	Region 9
Pacific Ocean Shoreline, San Diego HU, at the San Diego River outlet, at Dog Beach

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:

Data and Information Type:

PWS pathogen monitoring (ambient water)

Data Used to Assess Water Quality:

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).

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

Line of Evidence (LOE) for Decision ID 127986, Indicator Bacteria	Region 9
Pacific Ocean Shoreline, San Diego HU, at the San Diego River outlet, at Dog Beach

LOE ID:

30399

Pollutant:

Enterococcus

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Water Contact Recreation

Number of Samples:

Number of Exceedances:

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).

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

Line of Evidence (LOE) for Decision ID 127986, Indicator Bacteria	Region 9
Pacific Ocean Shoreline, San Diego HU, at the San Diego River outlet, at Dog Beach

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:

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):

Line of Evidence (LOE) for Decision ID 127986, Indicator Bacteria	Region 9
Pacific Ocean Shoreline, San Diego HU, at the San Diego River outlet, at Dog Beach

LOE ID:

30406

Pollutant:

Fecal Coliform

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Water Contact Recreation

Number of Samples:

Number of Exceedances:

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:

Department of Environmental Health, Ocean & Bay Recreational Water Quality Program, 2007. AB 411 monitoring data 1999 to 2007

National Weather Service Forecast Office, San Diego, California, Chronological Regional Temperature and Precipitation Listings by Station

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.

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

Line of Evidence (LOE) for Decision ID 127986, Indicator Bacteria	Region 9
Pacific Ocean Shoreline, San Diego HU, at the San Diego River outlet, at Dog Beach

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:

Data and Information Type:

PWS pathogen monitoring (ambient water)

Data Used to Assess Water Quality:

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).

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

Line of Evidence (LOE) for Decision ID 127986, Indicator Bacteria	Region 9
Pacific Ocean Shoreline, San Diego HU, at the San Diego River outlet, at Dog Beach

LOE ID:

31234

Pollutant:

Fecal Coliform

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Water Contact Recreation

Number of Samples:

Number of Exceedances:

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).

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

Line of Evidence (LOE) for Decision ID 127986, Indicator Bacteria	Region 9
Pacific Ocean Shoreline, San Diego HU, at the San Diego River outlet, at Dog Beach

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:

Data and Information Type:

PWS pathogen monitoring (ambient water)

Data Used to Assess Water Quality:

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).

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

Line of Evidence (LOE) for Decision ID 127986, Indicator Bacteria	Region 9
Pacific Ocean Shoreline, San Diego HU, at the San Diego River outlet, at Dog Beach

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:

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):

Line of Evidence (LOE) for Decision ID 127986, Indicator Bacteria	Region 9
Pacific Ocean Shoreline, San Diego HU, at the San Diego River outlet, at Dog Beach

LOE ID:

30405

Pollutant:

Fecal Coliform

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Water Contact Recreation

Number of Samples:

Number of Exceedances:

Data and Information Type:

PWS pathogen monitoring (ambient water)

Data Used to Assess Water Quality:

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).

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

Line of Evidence (LOE) for Decision ID 127986, Indicator Bacteria	Region 9
Pacific Ocean Shoreline, San Diego HU, at the San Diego River outlet, at Dog Beach

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.

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.

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

Line of Evidence (LOE) for Decision ID 127986, Indicator Bacteria	Region 9
Pacific Ocean Shoreline, San Diego HU, at the San Diego River outlet, at Dog Beach

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).

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).

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.

QAPP Information:

QA Info Missing

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 127986, Indicator Bacteria	Region 9
Pacific Ocean Shoreline, San Diego HU, at the San Diego River outlet, at Dog Beach

LOE ID:

30397

Pollutant:

Total Coliform

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Shellfish Harvesting

Number of Samples:

Number of Exceedances:

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:

Department of Environmental Health, Ocean & Bay Recreational Water Quality Program, 2007. AB 411 monitoring data 1999 to 2007

National Weather Service Forecast Office, San Diego, California, Chronological Regional Temperature and Precipitation Listings by Station

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

Line of Evidence (LOE) for Decision ID 127986, Indicator Bacteria	Region 9
Pacific Ocean Shoreline, San Diego HU, at the San Diego River outlet, at Dog Beach

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:

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):

Line of Evidence (LOE) for Decision ID 127986, Indicator Bacteria	Region 9
Pacific Ocean Shoreline, San Diego HU, at the San Diego River outlet, at Dog Beach

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:

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):

Line of Evidence (LOE) for Decision ID 127986, Indicator Bacteria	Region 9
Pacific Ocean Shoreline, San Diego HU, at the San Diego River outlet, at Dog Beach

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.

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

Line of Evidence (LOE) for Decision ID 127986, Indicator Bacteria	Region 9
Pacific Ocean Shoreline, San Diego HU, at the San Diego River outlet, at Dog Beach

LOE ID:

31236

Pollutant:

Total Coliform

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Water Contact Recreation

Number of Samples:

Number of Exceedances:

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:

Department of Environmental Health, Ocean & Bay Recreational Water Quality Program, 2007. AB 411 monitoring data 1999 to 2007

National Weather Service Forecast Office, San Diego, California, Chronological Regional Temperature and Precipitation Listings by Station

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;

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

Line of Evidence (LOE) for Decision ID 127986, Indicator Bacteria	Region 9
Pacific Ocean Shoreline, San Diego HU, at the San Diego River outlet, at Dog Beach

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:

Data and Information Type:

PWS pathogen monitoring (ambient water)

Data Used to Assess Water Quality:

Data Reference:

Department of Environmental Health, Ocean & Bay Recreational Water Quality Program, 2007. AB 411 monitoring data 1999 to 2007

National Weather Service Forecast Office, San Diego, California, Chronological Regional Temperature and Precipitation Listings by Station

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;

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

Line of Evidence (LOE) for Decision ID 127986, Indicator Bacteria	Region 9
Pacific Ocean Shoreline, San Diego HU, at the San Diego River outlet, at Dog Beach

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:

Data and Information Type:

PWS pathogen monitoring (ambient water)

Data Used to Assess Water Quality:

Data Reference:

Department of Environmental Health, Ocean & Bay Recreational Water Quality Program, 2007. AB 411 monitoring data 1999 to 2007

National Weather Service Forecast Office, San Diego, California, Chronological Regional Temperature and Precipitation Listings by Station

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;

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

Line of Evidence (LOE) for Decision ID 127986, Indicator Bacteria	Region 9
Pacific Ocean Shoreline, San Diego HU, at the San Diego River outlet, at Dog Beach

LOE ID:

30411

Pollutant:

Total Coliform

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Water Contact Recreation

Number of Samples:

Number of Exceedances:

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:

Department of Environmental Health, Ocean & Bay Recreational Water Quality Program, 2007. AB 411 monitoring data 1999 to 2007

National Weather Service Forecast Office, San Diego, California, Chronological Regional Temperature and Precipitation Listings by Station

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;

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

Line of Evidence (LOE) for Decision ID 127986, Indicator Bacteria	Region 9
Pacific Ocean Shoreline, San Diego HU, at the San Diego River outlet, at Dog Beach

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:

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):

Line of Evidence (LOE) for Decision ID 127986, Indicator Bacteria	Region 9
Pacific Ocean Shoreline, San Diego HU, at the San Diego River outlet, at Dog Beach

LOE ID:

30413

Pollutant:

Total Coliform

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Water Contact Recreation

Number of Samples:

Number of Exceedances:

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:

Department of Environmental Health, Ocean & Bay Recreational Water Quality Program, 2007. AB 411 monitoring data 1999 to 2007

National Weather Service Forecast Office, San Diego, California, Chronological Regional Temperature and Precipitation Listings by Station

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;

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

Line of Evidence (LOE) for Decision ID 127986, Indicator Bacteria	Region 9
Pacific Ocean Shoreline, San Diego HU, at the San Diego River outlet, at Dog Beach

LOE ID:

220335

Pollutant:

Enterococcus

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Water Contact Recreation

Number of Samples:

102

Number of Exceedances:

Data and Information Type:

PATHOGEN MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed data for Pacific Ocean Shoreline, San Diego HU, at the San Diego River outlet, at Dog Beach to determine beneficial use support and the results are as follows: 36 of the 102 samples exceeded the Statistical Threshold Value (STV) water quality threshold for Enterococcus. The STV is based on a 10% exceedance rate that is calculated monthly.

Data Reference:

Coastal Counties in Region 9 including: Orange, San Diego, and Los Angeles counties.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

California Ocean Plan (SWRCB 2019) states that the bacteria water quality objective to protect the REC-1 beneficial for all ocean waters for Enterococci is a statistical value threshold (STV) of 110 cfu/100 mL. The STV shall not be exceeded by more than 10 percent of the samples collected in a calendar month, calculated in a static manner.

Objective/Criterion Reference:

SWRCB. 2005. Water Quality Control Plan, Ocean Waters of California (Ocean Plan). California Environmental Protection Agency, State Water Resources Control Board. February 2, 2019

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site(s), station(s): FM-010

Temporal Representation:

The samples were collected between the days of 2010-08-31 and 2019-06-13 .

Environmental Conditions:

QAPP Information:

QAPP for San Diego County Beachwatch data

QAPP Information Reference(s):

QAPP for San Diego County Beachwatch data for the 2020 Integrated Report.

Line of Evidence (LOE) for Decision ID 127986, Indicator Bacteria	Region 9
Pacific Ocean Shoreline, San Diego HU, at the San Diego River outlet, at Dog Beach

LOE ID:

220681

Pollutant:

Enterococcus

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Water Contact Recreation

Number of Samples:

Number of Exceedances:

Data and Information Type:

PATHOGEN MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed data for Pacific Ocean Shoreline, San Diego HU, at the San Diego River outlet, at Dog Beach to determine beneficial use support and the results are as follows: 16 of the 19 samples exceeded the Statistical Threshold Value (STV) water quality threshold for Enterococcus. The STV is based on a 10% exceedance rate that is calculated monthly.

Data Reference:

Water data for the 2020/2022 integrated report in Region 9.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

SWRCB. 2005. Water Quality Control Plan, Ocean Waters of California (Ocean Plan). California Environmental Protection Agency, State Water Resources Control Board. February 2, 2019

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site(s), station(s): SDR-DB

Temporal Representation:

The samples were collected between the days of 2013-06-27 and 2014-12-04 .

Environmental Conditions:

QAPP Information:

QAPP Information Reference(s):

San Luis Rey River Watershed Quality Assurance Project Plan

QAPP Information Reference(s):

San Diego River Watershed Quality Assurance Project Plan Bacteria TMDL Monitoring Program

Line of Evidence (LOE) for Decision ID 127986, Indicator Bacteria	Region 9
Pacific Ocean Shoreline, San Diego HU, at the San Diego River outlet, at Dog Beach

LOE ID:

220691

Pollutant:

Enterococcus

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Water Contact Recreation

Number of Samples:

Number of Exceedances:

Data and Information Type:

PATHOGEN MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed data for Pacific Ocean Shoreline, San Diego HU, at the San Diego River outlet, at Dog Beach to determine beneficial use support and the results are as follows: 33 of the 42 samples exceeded the geomean water quality threshold for Enterococcus. This is a six week rolling geomean that is calculated weekly.

Data Reference:

Water data for the 2020/2022 integrated report in Region 9.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

California Ocean Plan (SWRCB 2019) states that the bacteria water quality objective to protect the REC-1 beneficial for all ocean waters for Enterococci is a geometric mean (GM) of 30 cfu/100 mL. The waterbody GM shall not be greater that the GM magnitude in any six-week interval, calculated weekly.

Objective/Criterion Reference:

SWRCB. 2005. Water Quality Control Plan, Ocean Waters of California (Ocean Plan). California Environmental Protection Agency, State Water Resources Control Board. February 2, 2019

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site(s), station(s): SDR-DB

Temporal Representation:

The samples were collected between the days of 2013-06-27 and 2014-12-04 .

Environmental Conditions:

QAPP Information:

QAPP Information Reference(s):

San Luis Rey River Watershed Quality Assurance Project Plan

QAPP Information Reference(s):

San Diego River Watershed Quality Assurance Project Plan Bacteria TMDL Monitoring Program

Line of Evidence (LOE) for Decision ID 127986, Indicator Bacteria	Region 9
Pacific Ocean Shoreline, San Diego HU, at the San Diego River outlet, at Dog Beach

LOE ID:

220468

Pollutant:

Enterococcus

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Water Contact Recreation

Number of Samples:

379

Number of Exceedances:

Data and Information Type:

PATHOGEN MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed data for Pacific Ocean Shoreline, San Diego HU, at the San Diego River outlet, at Dog Beach to determine beneficial use support and the results are as follows: 46 of the 379 samples exceeded the geomean water quality threshold for Enterococcus. This is a six week rolling geomean that is calculated weekly.

Data Reference:

Coastal Counties in Region 9 including: Orange, San Diego, and Los Angeles counties.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

SWRCB. 2005. Water Quality Control Plan, Ocean Waters of California (Ocean Plan). California Environmental Protection Agency, State Water Resources Control Board. February 2, 2019

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site(s), station(s): FM-010

Temporal Representation:

The samples were collected between the days of 2010-08-31 and 2019-06-13 .

Environmental Conditions:

QAPP Information:

QAPP for San Diego County Beachwatch data

QAPP Information Reference(s):

QAPP for San Diego County Beachwatch data for the 2020 Integrated Report.

Line of Evidence (LOE) for Decision ID 127986, Indicator Bacteria	Region 9
Pacific Ocean Shoreline, San Diego HU, at the San Diego River outlet, at Dog Beach

LOE ID:

220169

Pollutant:

Fecal Coliform

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Water Contact Recreation

Number of Samples:

346

Number of Exceedances:

Data and Information Type:

PATHOGEN MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed data for Pacific Ocean Shoreline, San Diego HU, at the San Diego River outlet, at Dog Beach to determine beneficial use support and the results are as follows: 0 of the 346 samples exceeded the water quality threshold for Coliform, Fecal. The water quality threshold is based on a 30-Day rolling geomean.

Data Reference:

Coastal Counties in Region 9 including: Orange, San Diego, and Los Angeles counties.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

California Ocean Plan (SWRCB 2019) states that the 30 day geometric mean of fecal coliform density not exceed 200 per 100 mL, calculated based on the five most recent samples from each site.

Objective/Criterion Reference:

SWRCB. 2005. Water Quality Control Plan, Ocean Waters of California (Ocean Plan). California Environmental Protection Agency, State Water Resources Control Board. February 2, 2019

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site(s), station(s): FM-010

Temporal Representation:

The samples were collected between the days of 2010-08-31 and 2019-06-12 .

Environmental Conditions:

QAPP Information:

QAPP for San Diego County Beachwatch data

QAPP Information Reference(s):

QAPP for San Diego County Beachwatch data for the 2020 Integrated Report.

Line of Evidence (LOE) for Decision ID 127986, Indicator Bacteria	Region 9
Pacific Ocean Shoreline, San Diego HU, at the San Diego River outlet, at Dog Beach

LOE ID:

220256

Pollutant:

Fecal Coliform

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Water Contact Recreation

Number of Samples:

918

Number of Exceedances:

Data and Information Type:

PATHOGEN MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed data for Pacific Ocean Shoreline, San Diego HU, at the San Diego River outlet, at Dog Beach to determine beneficial use support and the results are as follows: 48 of the 918 samples exceeded the water quality threshold for Coliform, Fecal. The water quality threshold is based on a Single Sample Maximum (SSM) value that is calculated daily.

Data Reference:

Coastal Counties in Region 9 including: Orange, San Diego, and Los Angeles counties.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

California Ocean Plan (SWRCB 2019) states that the Single Sample Maximum fecal coliform density not exceed 400 per 100 mL.

Objective/Criterion Reference:

SWRCB. 2005. Water Quality Control Plan, Ocean Waters of California (Ocean Plan). California Environmental Protection Agency, State Water Resources Control Board. February 2, 2019

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site(s), station(s): FM-010

Temporal Representation:

The samples were collected between the days of 2010-08-31 and 2019-06-12 .

Environmental Conditions:

QAPP Information:

QAPP for San Diego County Beachwatch data

QAPP Information Reference(s):

QAPP for San Diego County Beachwatch data for the 2020 Integrated Report.

Line of Evidence (LOE) for Decision ID 127986, Indicator Bacteria	Region 9
Pacific Ocean Shoreline, San Diego HU, at the San Diego River outlet, at Dog Beach

LOE ID:

220669

Pollutant:

Fecal Coliform

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Water Contact Recreation

Number of Samples:

Number of Exceedances:

Data and Information Type:

PATHOGEN MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed data for Pacific Ocean Shoreline, San Diego HU, at the San Diego River outlet, at Dog Beach to determine beneficial use support and the results are as follows: 0 of the 19 samples exceeded the water quality threshold for Coliform, Fecal. The water quality threshold is based on a 30-Day rolling geomean.

Data Reference:

Water data for the 2020/2022 integrated report in Region 9.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

California Ocean Plan (SWRCB 2019) states that the 30 day geometric mean of fecal coliform density not exceed 200 per 100 mL, calculated based on the five most recent samples from each site.

Objective/Criterion Reference:

SWRCB. 2005. Water Quality Control Plan, Ocean Waters of California (Ocean Plan). California Environmental Protection Agency, State Water Resources Control Board. February 2, 2019

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site(s), station(s): SDR-DB

Temporal Representation:

The samples were collected between the days of 2013-06-27 and 2014-12-04 .

Environmental Conditions:

QAPP Information:

QAPP Information Reference(s):

San Luis Rey River Watershed Quality Assurance Project Plan

QAPP Information Reference(s):

San Diego River Watershed Quality Assurance Project Plan Bacteria TMDL Monitoring Program

Line of Evidence (LOE) for Decision ID 127986, Indicator Bacteria	Region 9
Pacific Ocean Shoreline, San Diego HU, at the San Diego River outlet, at Dog Beach

LOE ID:

220674

Pollutant:

Fecal Coliform

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Water Contact Recreation

Number of Samples:

Number of Exceedances:

Data and Information Type:

PATHOGEN MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed data for Pacific Ocean Shoreline, San Diego HU, at the San Diego River outlet, at Dog Beach to determine beneficial use support and the results are as follows: 5 of the 65 samples exceeded the water quality threshold for Coliform, Fecal. The water quality threshold is based on a Single Sample Maximum (SSM) value that is calculated daily.

Data Reference:

Water data for the 2020/2022 integrated report in Region 9.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

California Ocean Plan (SWRCB 2019) states that the Single Sample Maximum fecal coliform density not exceed 400 per 100 mL.

Objective/Criterion Reference:

SWRCB. 2005. Water Quality Control Plan, Ocean Waters of California (Ocean Plan). California Environmental Protection Agency, State Water Resources Control Board. February 2, 2019

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site(s), station(s): SDR-DB

Temporal Representation:

The samples were collected between the days of 2013-06-27 and 2014-12-04 .

Environmental Conditions:

QAPP Information:

QAPP Information Reference(s):

San Luis Rey River Watershed Quality Assurance Project Plan

QAPP Information Reference(s):

San Diego River Watershed Quality Assurance Project Plan Bacteria TMDL Monitoring Program

Line of Evidence (LOE) for Decision ID 127986, Indicator Bacteria	Region 9
Pacific Ocean Shoreline, San Diego HU, at the San Diego River outlet, at Dog Beach

LOE ID:

220447

Pollutant:

Total Coliform

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Shellfish Harvesting

Number of Samples:

853

Number of Exceedances:

461

Data and Information Type:

PATHOGEN MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed data for Pacific Ocean Shoreline, San Diego HU, at the San Diego River outlet, at Dog Beach to determine beneficial use support and the results are as follows: 461 of the 853 samples exceeded the water quality threshold for Coliform, Total. The water quality threshold is based on a 10% exceedance rate that is calculated for a 30-Day peroid.

Data Reference:

Coastal Counties in Region 9 including: Orange, San Diego, and Los Angeles counties.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

California Ocean Plan (SWRCB 2019) states that not more than 10 percent of the total coliform samples shall exceed 230 per 100 mL.

Objective/Criterion Reference:

SWRCB. 2005. Water Quality Control Plan, Ocean Waters of California (Ocean Plan). California Environmental Protection Agency, State Water Resources Control Board. February 2, 2019

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site(s), station(s): FM-010

Temporal Representation:

The samples were collected between the days of 2010-08-31 and 2019-06-13 .

Environmental Conditions:

QAPP Information:

QAPP for San Diego County Beachwatch data

QAPP Information Reference(s):

QAPP for San Diego County Beachwatch data for the 2020 Integrated Report.

Line of Evidence (LOE) for Decision ID 127986, Indicator Bacteria	Region 9
Pacific Ocean Shoreline, San Diego HU, at the San Diego River outlet, at Dog Beach

LOE ID:

220405

Pollutant:

Total Coliform

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Shellfish Harvesting

Number of Samples:

853

Number of Exceedances:

151

Data and Information Type:

PATHOGEN MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed data for Pacific Ocean Shoreline, San Diego HU, at the San Diego River outlet, at Dog Beach to determine beneficial use support and the results are as follows: 151 of the 853 samples exceeded the water quality threshold for Coliform, Total. The water quality threshold for shellfish is based on the median concentration of Total Coliform at each station, and is calculated as a 30-day rolling median.

Data Reference:

Coastal Counties in Region 9 including: Orange, San Diego, and Los Angeles counties.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

California Ocean Plan (SWRCB 2019) states that the median total coliform density shall not exceed 70 per 100 mL.

Objective/Criterion Reference:

SWRCB. 2005. Water Quality Control Plan, Ocean Waters of California (Ocean Plan). California Environmental Protection Agency, State Water Resources Control Board. February 2, 2019

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at 1 monitoring site(s), station(s): FM-010

Temporal Representation:

The samples were collected between the days of 2010-08-31 and 2019-06-13 .

Environmental Conditions:

QAPP Information:

QAPP for San Diego County Beachwatch data

QAPP Information Reference(s):

QAPP for San Diego County Beachwatch data for the 2020 Integrated Report.