| Water Body Name: | Pacific Ocean Shoreline, Rancho Santa Fe HSA, at Powerhouse Park |
| Water Body ID: | CAC9051100020090216230114 |
| Water Body Type: | Coastal & Bay Shoreline |
DECISION ID |
127977 |
Region 9 |
Pacific Ocean Shoreline, Rancho Santa Fe HSA, at Powerhouse Park |
||
| Pollutant: | Indicator Bacteria |
| Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
| Last Listing Cycle's Final Listing Decision: | Do Not List on 303(d) list (TMDL required list)(2018) |
| Revision Status | Revised |
| Impairment from Pollutant or Pollution: | Pollutant |
| Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.3 of the Listing Policy. Under section 3.3 a single line of evidence is necessary to assess listing status. Two lines of evidence are available in the administrative record to assess this pollutant. Zero of the 283 samples exceed the GM threshold for Enterococci. Zero of the 112 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 placing this water segment-pollutant combination on the CWA section 303(d) List. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. Zero of 283 samples exceeded the Enterococci water quality threshold and zero of 112 samples exceeded the Fecal Coliform water quality threshold for the protection of REC-1, and this does not exceed the allowable frequency listed in Table 3.2 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. 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 placed on the section 303(d) list because applicable water quality standards are not being exceeded. |
| State Board Review of Regional Board Conclusion and Recommendation: | 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. |
|
|||||
| LOE ID: | 27109 | ||||
| Pollutant: | Enterococcus | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | None | ||||
| Beneficial Use: | Water Contact Recreation | ||||
| Number of Samples: | 40 | ||||
| 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 2004 through December 2007. A total of 169 single samples were collected with 40 monthly geomeans calculated. One of the 40 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: | 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 15th St. Del Mar City Beach, Del Mar, California. Station identification number is EH-360. | ||||
| Temporal Representation: | Samples were collected from January 2004 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 | ||||
|
|||||
| LOE ID: | 220225 | ||||
| Pollutant: | Total Coliform | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | None | ||||
| Beneficial Use: | Shellfish Harvesting | ||||
| Number of Samples: | 374 | ||||
| Number of Exceedances: | 1 | ||||
| Data and Information Type: | PATHOGEN MONITORING | ||||
| Data Used to Assess Water Quality: | Water Board staff assessed data for Pacific Ocean Shoreline, Rancho Santa Fe HSA, at Powerhouse Park to determine beneficial use support and the results are as follows: 1 of the 374 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): EH-360 | ||||
| Temporal Representation: | The samples were collected between the days of 2010-08-31 and 2019-03-27 . | ||||
| 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. | ||||
|
|||||
| LOE ID: | 75023 | ||||
| Pollutant: | Enterococcus | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | None | ||||
| Beneficial Use: | Water Contact Recreation | ||||
| Number of Samples: | 58 | ||||
| Number of Exceedances: | 0 | ||||
| Data and Information Type: | Not Specified | ||||
| Data Used to Assess Water Quality: | Zero of the 58 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 Powerhouse Park, Del Mar 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): | |||||
|
|||||
| LOE ID: | 27104 | ||||
| Pollutant: | Fecal Coliform | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | None | ||||
| Beneficial Use: | Water Contact Recreation | ||||
| Number of Samples: | 3 | ||||
| Number of Exceedances: | 0 | ||||
| Data and Information Type: | PWS pathogen monitoring (ambient water) | ||||
| Data Used to Assess Water Quality: | Beach monitoring data was collected by the County of San Diego from January 2004 through December 2007. A total of 107 single samples were collected with three samples correlated with a storm event. No sample exceeded the single sample water quality objective. | ||||
| Data Reference: | National Weather Service Forecast Office, San Diego, California, Chronological Regional Temperature and Precipitation Listings by Station | ||||
| Department of Environmental Health, Ocean & Bay Recreational Water Quality Program, 2007. AB 411 monitoring data 1999 to 2007 | |||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | Geomean; 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 15th St. Del Mar City Beach, Del Mar, California. Station identification number is EH-360. | ||||
| Temporal Representation: | Samples were collected from January 2004 through December 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: | 27103 | ||||
| Pollutant: | Fecal Coliform | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | None | ||||
| Beneficial Use: | Water Contact Recreation | ||||
| Number of Samples: | 107 | ||||
| Number of Exceedances: | 2 | ||||
| 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 2004 through December 2007. A total of 107 single samples were collected with two samples exceeding the single sample water quality objective. | ||||
| Data Reference: | Department of Environmental Health, Ocean & Bay Recreational Water Quality Program, 2007. AB 411 monitoring data 1999 to 2007 | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | 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 15th St. Del Mar City Beach, Del Mar, California. Station identification number is EH-360. | ||||
| Temporal Representation: | Samples were collected from January 2004 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 | ||||
|
|||||
| LOE ID: | 30722 | ||||
| Pollutant: | Fecal Coliform | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | None | ||||
| Beneficial Use: | Water Contact Recreation | ||||
| Number of Samples: | 104 | ||||
| Number of Exceedances: | 2 | ||||
| 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 2004 through December 2007. A total of 107 single samples were collected of which 104 are dry weather (AB411) samples with two samples exceeding the single sample water quality objective. | ||||
| Data Reference: | Department of Environmental Health, Ocean & Bay Recreational Water Quality Program, 2007. AB 411 monitoring data 1999 to 2007 | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | 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 15th St. Del Mar City Beach, Del Mar, California. Station identification number is EH-360. | ||||
| Temporal Representation: | Samples were collected from January 2004 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 | ||||
|
|||||
| LOE ID: | 31240 | ||||
| Pollutant: | Fecal Coliform | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | None | ||||
| Beneficial Use: | Water Contact Recreation | ||||
| Number of Samples: | 16 | ||||
| Number of Exceedances: | 0 | ||||
| Data and Information Type: | PWS pathogen monitoring (ambient water) | ||||
| Data Used to Assess Water Quality: | Beach monitoring data was collected by the County of San Diego from June 2004 through October 2007. A total of 65 dry month (April through October) single samples were collected with 16 dry month geomeans calculated. None of the 16 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: | 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 15th St. Del Mar City Beach, Del Mar, California. Station identification number is EH-360. | ||||
| Temporal Representation: | Samples were collected from June 2004 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: | 27108 | ||||
| Pollutant: | Fecal Coliform | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | None | ||||
| Beneficial Use: | Water Contact Recreation | ||||
| Number of Samples: | 26 | ||||
| Number of Exceedances: | 0 | ||||
| Data and Information Type: | PWS pathogen monitoring (ambient water) | ||||
| Data Used to Assess Water Quality: | Beach monitoring data was collected by the County of San Diego from January 2004 through December 2007. A total of 107 single samples were collected and 26 geomeans calculated. None of the 26 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: | 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 15th St. Del Mar City Beach, Del Mar, California. Station identification number is EH-360. | ||||
| Temporal Representation: | Samples were collected from January 2004 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 | ||||
|
|||||
| LOE ID: | 75046 | ||||
| Pollutant: | Fecal Coliform | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | None | ||||
| Beneficial Use: | Water Contact Recreation | ||||
| Number of Samples: | 58 | ||||
| Number of Exceedances: | 0 | ||||
| Data and Information Type: | Not Specified | ||||
| Data Used to Assess Water Quality: | Zero of the 58 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 Powerhouse Park, Del Mar 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): | |||||
|
|||||
| LOE ID: | 28208 | ||||
| Pollutant: | Indicator Bacteria | ||||
| LOE Subgroup: | Health Advisories | ||||
| Matrix: | Water | ||||
| Fraction: | None | ||||
| Beneficial Use: | Water Contact Recreation | ||||
| Number of Samples: | 2555 | ||||
| Number of Exceedances: | 2 | ||||
| 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 two beach advisory days for this location. Bacteriological samples are collected on a weekly basis from April through October. 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: | Department of Environmental Health, Land and Water Quality Division. San Diego County Beach Closure and Advisory Report | ||||
| County of Orange. March 2007. Annual Ocean and Bay Water Quality Report, 2006 | |||||
| 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: | Bacteriological monitoring samples were collected at the shoreline near Powerhouse Park in Del Mar, CA. | ||||
| 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: | 27099 | ||||
| Pollutant: | Total Coliform | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | None | ||||
| Beneficial Use: | Shellfish Harvesting | ||||
| Number of Samples: | 5 | ||||
| Number of Exceedances: | 2 | ||||
| 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 2004 through December 2007. A total of 169 single samples were collected with five samples correlated with a storm event. Two of the five 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 | ||||
| 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 coliform density shall not exceed 70 per 100ml, and not more than 10 percent of the samples shall exceed 230 per 100ml (SWRCB, 2005).
Comparisons are 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. |
||||
| 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 15th St. Del Mar City Beach, Del Mar, California. Station identification number is EH-360. | ||||
| Temporal Representation: | Samples were collected from January 2004 through December 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: | 77652 | ||||
| Pollutant: | Total Coliform | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | None | ||||
| Beneficial Use: | Shellfish Harvesting | ||||
| Number of Samples: | 57 | ||||
| Number of Exceedances: | 0 | ||||
| Data and Information Type: | PATHOGEN MONITORING | ||||
| Data Used to Assess Water Quality: | Zero of the 57 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, Rancho Santa Fe HSA, at Powerhouse Park. | ||||
| 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): | |||||
|
|||||
| LOE ID: | 27098 | ||||
| Pollutant: | Total Coliform | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | None | ||||
| Beneficial Use: | Shellfish Harvesting | ||||
| Number of Samples: | 169 | ||||
| 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 2004 through December 2007. A total of 169 single samples were collected with 11 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 | ||||
| SWAMP Data: | Non-SWAMP | ||||
| 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 15th St. Del Mar, Del Mar City Beach, California. Station identification number is EH-360. | ||||
| Temporal Representation: | Samples were collected from January 2004 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 | ||||
|
|||||
| LOE ID: | 75047 | ||||
| Pollutant: | Total Coliform | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | None | ||||
| Beneficial Use: | Shellfish Harvesting | ||||
| Number of Samples: | 78 | ||||
| Number of Exceedances: | 1 | ||||
| Data and Information Type: | PATHOGEN MONITORING | ||||
| Data Used to Assess Water Quality: | Water Board staff assessed Beach Watch data for Pacific Ocean Shoreline, Rancho Santa Fe HSA, at Powerhouse Park to determine beneficial use support and results are as follows: 1 of 78 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, Rancho Santa Fe HSA, at Powerhouse Park was collected at 1 monitoring site [ 15th St. near outlet] | ||||
| Temporal Representation: | Data was collected over the time period 1/15/2008-8/31/2010. | ||||
| 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): | |||||
|
|||||
| LOE ID: | 27102 | ||||
| Pollutant: | Total Coliform | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | None | ||||
| Beneficial Use: | Water Contact Recreation | ||||
| Number of Samples: | 5 | ||||
| Number of Exceedances: | 0 | ||||
| Data and Information Type: | PWS pathogen monitoring (ambient water) | ||||
| Data Used to Assess Water Quality: | Beach monitoring data was collected by the County of San Diego from January 2004 through December 2007. A total of 169 single samples were collected with five samples correlated with a storm event. None of the five samples exceeded the single sample water quality objective. | ||||
| Data Reference: | National Weather Service Forecast Office, San Diego, California, Chronological Regional Temperature and Precipitation Listings by Station | ||||
| Department of Environmental Health, Ocean & Bay Recreational Water Quality Program, 2007. AB 411 monitoring data 1999 to 2007 | |||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | Geomean: Total coliform density shall not exceed 1,000 per 100ml;
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 15th St. Del Mar City Beach, Del Mar, California. Station identification number is EH-360. | ||||
| Temporal Representation: | Samples were collected from January 2004 through December 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: | 31241 | ||||
| Pollutant: | Total Coliform | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | None | ||||
| Beneficial Use: | Water Contact Recreation | ||||
| Number of Samples: | 25 | ||||
| Number of Exceedances: | 0 | ||||
| Data and Information Type: | PWS pathogen monitoring (ambient water) | ||||
| Data Used to Assess Water Quality: | Beach monitoring data was collected by the County of San Diego from June 2004 through October 2007. A total of 25 dry month (April through October) single samples were collected with 25 dry month geomeans calculated. None of the 25 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: | 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 15th St. Del Mar City Beach, Del Mar, California. Station identification number is EH-360. | ||||
| Temporal Representation: | Samples were collected from June 2004 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: | 27100 | ||||
| Pollutant: | Total Coliform | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | None | ||||
| Beneficial Use: | Water Contact Recreation | ||||
| Number of Samples: | 169 | ||||
| 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 2004 through December 2007. A total of 169 single samples were collected with one sample exceeding the single sample water quality objective. | ||||
| Data Reference: | National Weather Service Forecast Office, San Diego, California, Chronological Regional Temperature and Precipitation Listings by Station | ||||
| Department of Environmental Health, Ocean & Bay Recreational Water Quality Program, 2007. AB 411 monitoring data 1999 to 2007 | |||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | Geomean: Total coliform density shall not exceed 1,000 per 100ml;
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 15th St. Del Mar City Beach, Del Mar, California. Station identification number is EH-360. | ||||
| Temporal Representation: | Samples were collected from January 2004 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 | ||||
|
|||||
| LOE ID: | 30827 | ||||
| Pollutant: | Total Coliform | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | None | ||||
| Beneficial Use: | Water Contact Recreation | ||||
| Number of Samples: | 164 | ||||
| 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 2004 through December 2007. A total of 169 single samples were collected of which 164 are dry weather (AB411) samples with one sample exceeding the single sample water quality objective. | ||||
| Data Reference: | National Weather Service Forecast Office, San Diego, California, Chronological Regional Temperature and Precipitation Listings by Station | ||||
| Department of Environmental Health, Ocean & Bay Recreational Water Quality Program, 2007. AB 411 monitoring data 1999 to 2007 | |||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | Geomean: Total coliform density shall not exceed 1,000 per 100ml;
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 15th St. Del Mar City Beach, Del Mar, California. Station identification number is EH-360. | ||||
| Temporal Representation: | Samples were collected from January 2004 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 | ||||
|
|||||
| LOE ID: | 75048 | ||||
| Pollutant: | Total Coliform | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | None | ||||
| Beneficial Use: | Water Contact Recreation | ||||
| Number of Samples: | 58 | ||||
| Number of Exceedances: | 0 | ||||
| Data and Information Type: | Not Specified | ||||
| Data Used to Assess Water Quality: | Zero of the 58 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 Powerhouse Park, Del Mar 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): | |||||
|
|||||
| LOE ID: | 27107 | ||||
| Pollutant: | Total Coliform | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | None | ||||
| Beneficial Use: | Water Contact Recreation | ||||
| Number of Samples: | 40 | ||||
| Number of Exceedances: | 0 | ||||
| Data and Information Type: | PWS pathogen monitoring (ambient water) | ||||
| Data Used to Assess Water Quality: | Beach monitoring data was collected by the County of San Diego from January 2004 through December 2007. A total of 169 single samples were collected with 40 monthly geomeans calculated. None of the 40 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: | 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 15th St. Del Mar City Beach, Del Mar, California. Station identification number is EH-360. | ||||
| Temporal Representation: | Samples were collected from January 2004 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 | ||||
|
|||||
| LOE ID: | 27105 | ||||
| Pollutant: | Enterococcus | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | None | ||||
| Beneficial Use: | Water Contact Recreation | ||||
| Number of Samples: | 169 | ||||
| Number of Exceedances: | 5 | ||||
| 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 2004 through December 2007. A total of 169 single samples were collected with 5 samples exceeding the single sample water quality objective. | ||||
| Data Reference: | Department of Environmental Health, Ocean & Bay Recreational Water Quality Program, 2007. AB 411 monitoring data 1999 to 2007 | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | 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 15th St. Del Mar City Beach, Del Mar, California. Station identification number is EH-360. | ||||
| Temporal Representation: | Samples were collected from January 2004 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 Orange. Quality Assurance/Quality Control Manual, February 2004 Bacteria specific | ||||
| QAPP Information Reference(s): | County of San Diego, 2006. Department Public Health Laboratory, Quality Assurance Manual, December 2006 | ||||
|
|||||
| LOE ID: | 31239 | ||||
| Pollutant: | Enterococcus | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | None | ||||
| Beneficial Use: | Water Contact Recreation | ||||
| Number of Samples: | 25 | ||||
| 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 June 2004 through October 2007. A total of 107 dry month (April through October) single samples were collected with 25 dry month geomeans calculated. One of the 25 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: | 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 15th St. Del Mar City Beach, Del Mar, California. Station identification number is EH-360. | ||||
| Temporal Representation: | Samples were collected from June 2004 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: | 30612 | ||||
| Pollutant: | Enterococcus | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | None | ||||
| Beneficial Use: | Water Contact Recreation | ||||
| Number of Samples: | 164 | ||||
| Number of Exceedances: | 4 | ||||
| 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 2004 through December 2007. A total of 169 single samples were collected of which 164 are dry weather (AB411) samples with four samples exceeding the single sample water quality objective. | ||||
| Data Reference: | Department of Environmental Health, Ocean & Bay Recreational Water Quality Program, 2007. AB 411 monitoring data 1999 to 2007 | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | 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 15th St. Del Mar City Beach, Del Mar, California. Station identification number is EH-360. | ||||
| Temporal Representation: | Samples were collected from January 2004 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 Orange. Quality Assurance/Quality Control Manual, February 2004 Bacteria specific | ||||
| QAPP Information Reference(s): | County of San Diego, 2006. Department Public Health Laboratory, Quality Assurance Manual, December 2006 | ||||
|
|||||
| LOE ID: | 220257 | ||||
| Pollutant: | Enterococcus | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | None | ||||
| Beneficial Use: | Water Contact Recreation | ||||
| Number of Samples: | 101 | ||||
| Number of Exceedances: | 3 | ||||
| Data and Information Type: | PATHOGEN MONITORING | ||||
| Data Used to Assess Water Quality: | Water Board staff assessed data for Pacific Ocean Shoreline, Rancho Santa Fe HSA, at Powerhouse Park to determine beneficial use support and the results are as follows: 3 of the 101 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): EH-360 | ||||
| Temporal Representation: | The samples were collected between the days of 2010-08-31 and 2019-03-27 . | ||||
| 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. | ||||
|
|||||
| LOE ID: | 220294 | ||||
| Pollutant: | Enterococcus | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | None | ||||
| Beneficial Use: | Water Contact Recreation | ||||
| Number of Samples: | 283 | ||||
| Number of Exceedances: | 0 | ||||
| Data and Information Type: | PATHOGEN MONITORING | ||||
| Data Used to Assess Water Quality: | Water Board staff assessed data for Pacific Ocean Shoreline, Rancho Santa Fe HSA, at Powerhouse Park to determine beneficial use support and the results are as follows: 0 of the 283 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: | 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): EH-360 | ||||
| Temporal Representation: | The samples were collected between the days of 2010-08-31 and 2019-03-27 . | ||||
| 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. | ||||
|
|||||
| LOE ID: | 220287 | ||||
| Pollutant: | Fecal Coliform | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | None | ||||
| Beneficial Use: | Water Contact Recreation | ||||
| Number of Samples: | 378 | ||||
| Number of Exceedances: | 2 | ||||
| Data and Information Type: | PATHOGEN MONITORING | ||||
| Data Used to Assess Water Quality: | Water Board staff assessed data for Pacific Ocean Shoreline, Rancho Santa Fe HSA, at Powerhouse Park to determine beneficial use support and the results are as follows: 2 of the 378 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): EH-360 | ||||
| Temporal Representation: | The samples were collected between the days of 2010-08-31 and 2019-02-26 . | ||||
| 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. | ||||
|
|||||
| LOE ID: | 220140 | ||||
| Pollutant: | Fecal Coliform | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | None | ||||
| Beneficial Use: | Water Contact Recreation | ||||
| Number of Samples: | 112 | ||||
| Number of Exceedances: | 0 | ||||
| Data and Information Type: | PATHOGEN MONITORING | ||||
| Data Used to Assess Water Quality: | Water Board staff assessed data for Pacific Ocean Shoreline, Rancho Santa Fe HSA, at Powerhouse Park to determine beneficial use support and the results are as follows: 0 of the 112 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): EH-360 | ||||
| Temporal Representation: | The samples were collected between the days of 2010-08-31 and 2019-02-26 . | ||||
| 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. | ||||
|
|||||
| LOE ID: | 219777 | ||||
| Pollutant: | Total Coliform | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | None | ||||
| Beneficial Use: | Shellfish Harvesting | ||||
| Number of Samples: | 374 | ||||
| Number of Exceedances: | 13 | ||||
| Data and Information Type: | PATHOGEN MONITORING | ||||
| Data Used to Assess Water Quality: | Water Board staff assessed data for Pacific Ocean Shoreline, Rancho Santa Fe HSA, at Powerhouse Park to determine beneficial use support and the results are as follows: 13 of the 374 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): EH-360 | ||||
| Temporal Representation: | The samples were collected between the days of 2010-08-31 and 2019-03-27 . | ||||
| 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. | ||||
|
|||||
| LOE ID: | 27106 | ||||
| Pollutant: | Enterococcus | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | None | ||||
| Beneficial Use: | Water Contact Recreation | ||||
| Number of Samples: | 5 | ||||
| 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 2004 through December 2007. A total of 169 single samples were collected with five samples correlated with a storm event. One of the five samples exceeded the single sample water quality objective. | ||||
| Data Reference: | National Weather Service Forecast Office, San Diego, California, Chronological Regional Temperature and Precipitation Listings by Station | ||||
| Department of Environmental Health, Ocean & Bay Recreational Water Quality Program, 2007. AB 411 monitoring data 1999 to 2007 | |||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | Geomean: 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 15th St. Del Mar City Beach, Del Mar, California. Station identification number is EH-360. | ||||
| Temporal Representation: | Samples were collected from January 2004 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 | ||||
DECISION ID |
86955 |
Region 9 |
Pacific Ocean Shoreline, Rancho Santa Fe HSA, at Powerhouse Park |
||
| Pollutant: | Trash |
| Final Listing Decision: | List on 303(d) list (being addressed by action other than TMDL) |
| Last Listing Cycle's Final Listing Decision: | List on 303(d) list (being addressed by action other than TMDL)(2016) |
| Revision Status | Original |
| Sources: | A Source Unknown |
| Expected Attainment Date: | 2029 |
| Implementation Action Other than TMDL: | Collected effort of public, agencies, organizations, and permittees. Methods include street sweeping, education programs on littering, installation of trash-catching devices on storm drains. |
| Impairment from Pollutant or Pollution: | Pollutant |
| Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.7 of the Listing Policy. Under this section when all other listing factors do not result in the listing of a water segment but information indicates non-attainment of standards, a water segment shall be evaluated to determine whether the weight of evidence demonstrates that water quality standard is not attained. If the weight of evidence indicates non-attainment, the water segment shall be placed on the CWA section 303(d) List.
Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification for placing this water segment-pollutant combination from the CWA section 303(d) List. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The following information indicates that the water quality standard is not being attained: Coastkeeper cleanups occurred on 5/10/08, 5/9/09, and 5/8/10 for this water body. The total weight of trash (lbs) collected on these dates was 484.5. Using the metric, Coastkeeper classified this water body as low for trash impairment. However, any trash found is an exceedance and needs to be addressed by an action other than a TMDL. 3. This process is scientifically defensible and reproducible. |
| Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. |
| State Board Review of Regional Board Conclusion and Recommendation: | |
| State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
| LOE ID: | 75049 | ||||
| Pollutant: | Trash | ||||
| LOE Subgroup: | Pollutant-Nuisance | ||||
| Matrix: | Not Recorded | ||||
| Fraction: | None | ||||
| Beneficial Use: | Non-Contact Recreation | ||||
| Number of Samples: | 0 | ||||
| Number of Exceedances: | 0 | ||||
| Data and Information Type: | Occurrence of conditions judged to cause impairment | ||||
| Data Used to Assess Water Quality: | The San Diego Coastkeeper conducts trash cleanups and uses a metric (pounds of trash collected per volunteer) to compare levels of trash across beaches and categorizes beaches as either low, medium, high or severe, based on this metric. Coastkeeper cleanups occurred on 5/10/08, 5/9/09, and 5/8/10 for this water body. The total weight of trash (lbs) collected on these dates was 484.5. However, using the metric, Coastkeeper classified this water body as low for trash impairment. | ||||
| Data Reference: | Data for Trash, Nutrients, and Pathogens in Region 9, 2007-2010. | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | Floating Material Waters shall not contain floating material, including solids, liquids, foams, and scum in concentrations which cause nuisance or adversely affect beneficial uses. | ||||
| Objective/Criterion Reference: | Water Quality Control Plan for the San Diego Basin | ||||
| Evaluation Guideline: | |||||
| Guideline Reference: | |||||
| Spatial Representation: | 15th Street/Powerhouse - Del Mar | ||||
| Temporal Representation: | Three cleanups occurred on 5/10/08, 5/9/09, and 5/8/10. | ||||
| Environmental Conditions: | |||||
| QAPP Information: | San Diego Coastkeeper QAPP was provided. | ||||
| QAPP Information Reference(s): | |||||