Water Body Name: | Pacific Ocean Shoreline, Lower San Juan HSA, at San Juan Creek |
Water Body ID: | CAC9012000020090505155231 |
Water Body Type: | Coastal & Bay Shoreline |
Lines of Evidence (LOEs) for Decision ID 16874 |
LOE ID: | 29349 |
Pollutant: | Enterococcus |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Water Contact Recreation |
Number of Samples: | 32 |
Number of Exceedances: | 25 |
Data and Information Type: | PWS pathogen monitoring (ambient water) |
Data Used to Assess Water Quality: | Beach monitoring data was collected by the County of Orange from May 2004 through December 2006. A total of 548 single samples were collected and 32 monthly geomeans calculated. From the 32 geomeans, 25 exceeded the geomean water quality objective. |
Data Reference: | The National Pollutant Discharge Elimination System (NPDES) Municipal Stormwater Permit, Coastal Storm Drain Outfall Program. Bacteria Shoreline Data. 2002 through 2007. |
Water Quality Objective/Criterion: | Geomean: Fecal coliform density shall not exceed 200 per 100ml
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: | The only sampling station is located at San Juan Beach Creek 1, SJC1, in the Lower San Juan HSA Doheny State Beach, Dana Point (Latitude 33.461930, Longitude -117.684010). |
Temporal Representation: | Samples were collected at least once a week from May 2004 through December 2006. |
Environmental Conditions: | |
QAPP Information: | Quality control for the bacteria analysis portion of this study was conducted in accordance with the County of Orange Quality Assessment/Quality Control document. |
QAPP Information Reference(s): | County of Orange. Quality Assurance/Quality Control Manual, February 2004. |
| |
LOE ID: | 30311 |
Pollutant: | Indicator Bacteria |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | Not Recorded |
Beneficial Use: | Water Contact Recreation |
Number of Samples: | 0 |
Number of Exceedances: | 0 |
Data and Information Type: | PATHOGEN MONITORING |
Data Used to Assess Water Quality: | Unspecified--This LOE is a placeholder to support a 303(d) listing decision made prior to 2006.
For the 2008 assessment , the 2006 listed coastline 'Pacific Ocean Shoreline, Lower San Juan HSA' was split into smaller segments and each represents an area near the sampling location of the data being assessed. This segment 'Pacific Ocean Shoreline, Lower San Juan HSA, at San Juan Creek' is one of the sampling locations. This LOE is a copy of the 2006 listing placeholder LOE for Pacific Ocean Shoreline, Lower San Juan HSA and is considered by the Regional Board to be applicable to this more specific segment formed from the split. |
Data Reference: | Placeholder reference pre-2006 303(d) |
Water Quality Objective/Criterion: | Unspecified |
Objective/Criterion Reference: | Placeholder reference pre-2006 303(d) |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | |
Temporal Representation: | |
Environmental Conditions: | |
QAPP Information: | Unspecified |
QAPP Information Reference(s): | |
| |
LOE ID: | 29351 |
Pollutant: | Enterococcus |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Water Contact Recreation |
Number of Samples: | 548 |
Number of Exceedances: | 128 |
Data and Information Type: | PWS pathogen monitoring (ambient water) |
Data Used to Assess Water Quality: | Beach monitoring data was collected by the County of Orange from May 2004 through December 2006. A total of 548 single samples were collected with 128 samples exceeding the single sample water quality objective. |
Data Reference: | The National Pollutant Discharge Elimination System (NPDES) Municipal Stormwater Permit, Coastal Storm Drain Outfall Program. Bacteria Shoreline Data. 2002 through 2007. |
Water Quality Objective/Criterion: | Geomean: Enterococcus density shall not exceed 35 per 100 ml.
Single Sample Maximum: Enterococcus density shall not exceed 104 per 100 ml (SWRCB, 2005). |
Objective/Criterion Reference: | Water Quality Control Plan Ocean Waters of California. California Ocean Plan 2005. Sacramento, CA: State Water Resources Control Board, California Environmental Protection Agency |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | The only sampling station is located at San Juan Beach Creek 1, SJC1, in the Lower San Juan HSA Doheny State Beach, Dana Point (Latitude 33.461930, Longitude -117.684010). |
Temporal Representation: | Samples were collected at least once a week from May 2004 through December 2006. |
Environmental Conditions: | |
QAPP Information: | Quality control for the bacteria analysis portion of this study was conducted in accordance with the County of Orange Quality Assessment/Quality Control document. |
QAPP Information Reference(s): | County of Orange. Quality Assurance/Quality Control Manual, February 2004. |
| |
LOE ID: | 29340 |
Pollutant: | Enterococcus |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Water Contact Recreation |
Number of Samples: | 12 |
Number of Exceedances: | 12 |
Data and Information Type: | PWS pathogen monitoring (ambient water) |
Data Used to Assess Water Quality: | Beach monitoring data was collected by the County of Orange from May 2004 through December 2006. A total of 548 single samples were collected with 12 samples correlated with a storm event. All 12 samples exceeded the single sample water quality objective. This information will not be used in determining a listing decision, but is of interest to the Regional Board and has been included here as additional anecdotal information. |
Data Reference: | National Weather Service Forecast Office, San Diego, California, Chronological Regional Temperature and Precipitation Listings by Station |
The National Pollutant Discharge Elimination System (NPDES) Municipal Stormwater Permit, Coastal Storm Drain Outfall Program. Bacteria Shoreline Data. 2002 through 2007. | |
Water Quality Objective/Criterion: | Geomean: Fecal coliform density shall not exceed 200 per 100ml
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: | The only sampling station is located at San Juan Beach Creek 1, SJC1, in the Lower San Juan HSA Doheny State Beach, Dana Point (Latitude 33.461930, Longitude -117.684010). |
Temporal Representation: | Samples were collected at least once a week from May 2004 through December 2006. |
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 of this study was conducted in accordance with the County of Orange Quality Assessment/Quality Control document. |
QAPP Information Reference(s): | County of Orange. Quality Assurance/Quality Control Manual, February 2004. |
| |
LOE ID: | 29376 |
Pollutant: | Indicator Bacteria |
LOE Subgroup: | Health Advisories |
Matrix: | -N/A |
Fraction: | None |
Beneficial Use: | Water Contact Recreation |
Number of Samples: | 2555 |
Number of Exceedances: | 2292 |
Data and Information Type: | PWS pathogen monitoring (ambient water) |
Data Used to Assess Water Quality: | For the period from January 2000 to December 2006, there were and 2292 beach postings days for this section of shoreline. Bacteriological samples are collected on a weekly basis at approximately 150 ocean and bay location in Orange County. 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 Orange in their Annual Ocean and Bay Water Quality Report, March 2007. The reporting period was from January 2000 -December 2006. Data used was the number of days the beach was posting when the ocean or bay failed to meet the bacteriological standards. |
Data Reference: | County of Orange. March 2007. Annual Ocean and Bay Water Quality Report, 2006. |
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: | |
Spatial Representation: | Bacteriological monitoring samples were collected at North Beach, 250' North of San Juan Creek, San Juan Creek/Ocean Interface, 250' South of San Juan Creek, 1000' South of Outfall, 2000' South of Outfall, 3000' South of Outfall and 4000' South of Outfall. The posting covers 1.1 miles of beach shoreline. |
Temporal Representation: | The beach closures covers the time frame of January 2000 -December 2006. |
Environmental Conditions: | |
QAPP Information: | Samples were collected in compliance with County of Orange's Quality Assessment/Quality Control document. |
QAPP Information Reference(s): | County of Orange. Quality Assurance/Quality Control Manual, February 2004. |
Lines of Evidence (LOEs) for Decision ID 16875 |
LOE ID: | 29370 |
Pollutant: | Fecal Coliform |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Water Contact Recreation |
Number of Samples: | 547 |
Number of Exceedances: | 48 |
Data and Information Type: | PWS pathogen monitoring (ambient water) |
Data Used to Assess Water Quality: | Beach monitoring data was collected by the County of Orange from May 2004 through December 2006. A total of 547 single samples were collected with 48 samples exceeding the single sample water quality objective. |
Data Reference: | The National Pollutant Discharge Elimination System (NPDES) Municipal Stormwater Permit, Coastal Storm Drain Outfall Program. Bacteria Shoreline Data. 2002 through 2007. |
Water Quality Objective/Criterion: | Geomean: Fecal coliform density shall not exceed 200 per 100ml
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: | The only sampling station is located at San Juan Beach Creek 1, SJC1, in the Lower San Juan HSA Doheny State Beach, Dana Point (Latitude 33.461930, Longitude -117.684010). |
Temporal Representation: | Samples were collected at least once a week from May 2004 through December 2006. |
Environmental Conditions: | |
QAPP Information: | Quality control for the bacteria analysis portion of this study was conducted in accordance with the County of Orange Quality Assessment/Quality Control document. |
QAPP Information Reference(s): | County of Orange. Quality Assurance/Quality Control Manual, February 2004. |
| |
LOE ID: | 30311 |
Pollutant: | Indicator Bacteria |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | Not Recorded |
Beneficial Use: | Water Contact Recreation |
Number of Samples: | 0 |
Number of Exceedances: | 0 |
Data and Information Type: | PATHOGEN MONITORING |
Data Used to Assess Water Quality: | Unspecified--This LOE is a placeholder to support a 303(d) listing decision made prior to 2006.
For the 2008 assessment , the 2006 listed coastline 'Pacific Ocean Shoreline, Lower San Juan HSA' was split into smaller segments and each represents an area near the sampling location of the data being assessed. This segment 'Pacific Ocean Shoreline, Lower San Juan HSA, at San Juan Creek' is one of the sampling locations. This LOE is a copy of the 2006 listing placeholder LOE for Pacific Ocean Shoreline, Lower San Juan HSA and is considered by the Regional Board to be applicable to this more specific segment formed from the split. |
Data Reference: | Placeholder reference pre-2006 303(d) |
Water Quality Objective/Criterion: | Unspecified |
Objective/Criterion Reference: | Placeholder reference pre-2006 303(d) |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | |
Temporal Representation: | |
Environmental Conditions: | |
QAPP Information: | Unspecified |
QAPP Information Reference(s): | |
| |
LOE ID: | 29368 |
Pollutant: | Fecal Coliform |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Water Contact Recreation |
Number of Samples: | 12 |
Number of Exceedances: | 7 |
Data and Information Type: | PWS pathogen monitoring (ambient water) |
Data Used to Assess Water Quality: | Beach monitoring data was collected by the County of Orange from May 2004 through December 2006. A total of 547 single samples were collected with 12 samples correlated with a storm event. From the 12 samples, seven exceeded the single sample water quality objective. This information will not be used in determining a listing decision, but is of interest to the Regional Board and has been included here as additional anecdotal information. |
Data Reference: | National Weather Service Forecast Office, San Diego, California, Chronological Regional Temperature and Precipitation Listings by Station |
The National Pollutant Discharge Elimination System (NPDES) Municipal Stormwater Permit, Coastal Storm Drain Outfall Program. Bacteria Shoreline Data. 2002 through 2007. | |
Water Quality Objective/Criterion: | Geomean: Fecal coliform density shall not exceed 200 per 100ml
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: | The only sampling station is located at San Juan Beach Creek 1, SJC1, in the Lower San Juan HSA Doheny State Beach, Dana Point (Latitude 33.461930, Longitude -117.684010). |
Temporal Representation: | Samples were collected at least once a week from May 2004 through December 2006. |
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 of this study was conducted in accordance with the County of Orange Quality Assessment/Quality Control document. |
QAPP Information Reference(s): | County of Orange. Quality Assurance/Quality Control Manual, February 2004. |
| |
LOE ID: | 29376 |
Pollutant: | Indicator Bacteria |
LOE Subgroup: | Health Advisories |
Matrix: | -N/A |
Fraction: | None |
Beneficial Use: | Water Contact Recreation |
Number of Samples: | 2555 |
Number of Exceedances: | 2292 |
Data and Information Type: | PWS pathogen monitoring (ambient water) |
Data Used to Assess Water Quality: | For the period from January 2000 to December 2006, there were and 2292 beach postings days for this section of shoreline. Bacteriological samples are collected on a weekly basis at approximately 150 ocean and bay location in Orange County. 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 Orange in their Annual Ocean and Bay Water Quality Report, March 2007. The reporting period was from January 2000 -December 2006. Data used was the number of days the beach was posting when the ocean or bay failed to meet the bacteriological standards. |
Data Reference: | County of Orange. March 2007. Annual Ocean and Bay Water Quality Report, 2006. |
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: | |
Spatial Representation: | Bacteriological monitoring samples were collected at North Beach, 250' North of San Juan Creek, San Juan Creek/Ocean Interface, 250' South of San Juan Creek, 1000' South of Outfall, 2000' South of Outfall, 3000' South of Outfall and 4000' South of Outfall. The posting covers 1.1 miles of beach shoreline. |
Temporal Representation: | The beach closures covers the time frame of January 2000 -December 2006. |
Environmental Conditions: | |
QAPP Information: | Samples were collected in compliance with County of Orange's Quality Assessment/Quality Control document. |
QAPP Information Reference(s): | County of Orange. Quality Assurance/Quality Control Manual, February 2004. |
| |
LOE ID: | 29369 |
Pollutant: | Fecal Coliform |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Water Contact Recreation |
Number of Samples: | 32 |
Number of Exceedances: | 12 |
Data and Information Type: | PWS pathogen monitoring (ambient water) |
Data Used to Assess Water Quality: | Beach monitoring data was collected by the County of Orange from May 2004 through December 2006. A total of 547 single samples were collected with 32 monthy geomeans calculated. From the 32 geomeans, 12 exceeded the geomean water quality objective. |
Data Reference: | The National Pollutant Discharge Elimination System (NPDES) Municipal Stormwater Permit, Coastal Storm Drain Outfall Program. Bacteria Shoreline Data. 2002 through 2007. |
Water Quality Objective/Criterion: | Geomean: Fecal coliform density shall not exceed 200 per 100ml
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: | The only sampling station is located at San Juan Beach Creek 1, SJC1, in the Lower San Juan HSA Doheny State Beach, Dana Point (Latitude 33.461930, Longitude -117.684010). |
Temporal Representation: | Samples were collected at least once a week from May 2004 through December 2006. |
Environmental Conditions: | |
QAPP Information: | Quality control for the bacteria analysis portion of this study was conducted in accordance with the County of Orange Quality Assessment/Quality Control document. |
QAPP Information Reference(s): | County of Orange. Quality Assurance/Quality Control Manual, February 2004. |
Lines of Evidence (LOEs) for Decision ID 16884 |
LOE ID: | 29376 |
Pollutant: | Indicator Bacteria |
LOE Subgroup: | Health Advisories |
Matrix: | -N/A |
Fraction: | None |
Beneficial Use: | Water Contact Recreation |
Number of Samples: | 2555 |
Number of Exceedances: | 2292 |
Data and Information Type: | PWS pathogen monitoring (ambient water) |
Data Used to Assess Water Quality: | For the period from January 2000 to December 2006, there were and 2292 beach postings days for this section of shoreline. Bacteriological samples are collected on a weekly basis at approximately 150 ocean and bay location in Orange County. 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 Orange in their Annual Ocean and Bay Water Quality Report, March 2007. The reporting period was from January 2000 -December 2006. Data used was the number of days the beach was posting when the ocean or bay failed to meet the bacteriological standards. |
Data Reference: | County of Orange. March 2007. Annual Ocean and Bay Water Quality Report, 2006. |
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: | |
Spatial Representation: | Bacteriological monitoring samples were collected at North Beach, 250' North of San Juan Creek, San Juan Creek/Ocean Interface, 250' South of San Juan Creek, 1000' South of Outfall, 2000' South of Outfall, 3000' South of Outfall and 4000' South of Outfall. The posting covers 1.1 miles of beach shoreline. |
Temporal Representation: | The beach closures covers the time frame of January 2000 -December 2006. |
Environmental Conditions: | |
QAPP Information: | Samples were collected in compliance with County of Orange's Quality Assessment/Quality Control document. |
QAPP Information Reference(s): | County of Orange. Quality Assurance/Quality Control Manual, February 2004. |
| |
LOE ID: | 29571 |
Pollutant: | Total Coliform |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Water Contact Recreation |
Number of Samples: | 32 |
Number of Exceedances: | 7 |
Data and Information Type: | PWS pathogen monitoring (ambient water) |
Data Used to Assess Water Quality: | Beach monitoring data was collected by the County of Orange from May 2004 through December 2006. A total of 548 single samples were collected with 32 monthly geomeans calculated. Of the 32 geomeans, seven exceeded the geomean water quality objective. |
Data Reference: | The National Pollutant Discharge Elimination System (NPDES) Municipal Stormwater Permit, Coastal Storm Drain Outfall Program. Bacteria Shoreline Data. 2002 through 2007. |
Water Quality Objective/Criterion: | Geomean: Total coliform density shall not exceed 1,000 per 100ml.
Single Sample Maximum: Total coliform density shall not exceed 10,000 per 100ml (SWRCB, 2005). |
Objective/Criterion Reference: | Water Quality Control Plan Ocean Waters of California. California Ocean Plan 2005. Sacramento, CA: State Water Resources Control Board, California Environmental Protection Agency |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | The only sampling station is located at San Juan Beach Creek 1, SJC1, in the Lower San Juan HSA Doheny State Beach, Dana Point (Latitude 33.461930, Longitude -117.684010). |
Temporal Representation: | Samples were collected at least once a week from May 2004 through December 2006. |
Environmental Conditions: | |
QAPP Information: | Quality control for the bacteria analysis portion of this study was conducted in accordance with the County of Orange Quality Assessment/Quality Control document. |
QAPP Information Reference(s): | County of Orange. Quality Assurance/Quality Control Manual, February 2004. |
| |
LOE ID: | 29570 |
Pollutant: | Total Coliform |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Water Contact Recreation |
Number of Samples: | 12 |
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 Orange from May 2004 through December 2006. A total of 548 single samples were collected with 12 samples correlated with a storm event. Of the 12 samples, two exceeded the single sample water quality objective. This information will not be used in determining a listing decision, but is of interest to the Regional Board and has been included here as additional anecdotal information. |
Data Reference: | National Weather Service Forecast Office, San Diego, California, Chronological Regional Temperature and Precipitation Listings by Station |
The National Pollutant Discharge Elimination System (NPDES) Municipal Stormwater Permit, Coastal Storm Drain Outfall Program. Bacteria Shoreline Data. 2002 through 2007. | |
Water Quality Objective/Criterion: | Geomean: Total coliform density shall not exceed 1,000 per 100ml.
Single Sample Maximum: Total coliform density shall not exceed 10,000 per 100ml (SWRCB, 2005). |
Objective/Criterion Reference: | Water Quality Control Plan Ocean Waters of California. California Ocean Plan 2005. Sacramento, CA: State Water Resources Control Board, California Environmental Protection Agency |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | The only sampling station is located at San Juan Beach Creek 1, SJC1, in the Lower San Juan HSA Doheny State Beach, Dana Point (Latitude 33.461930, Longitude -117.684010). |
Temporal Representation: | Samples were collected at least once a week from May 2004 through December 2006. |
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 of this study was conducted in accordance with the County of Orange Quality Assessment/Quality Control document. |
QAPP Information Reference(s): | County of Orange. Quality Assurance/Quality Control Manual, February 2004. |
| |
LOE ID: | 30311 |
Pollutant: | Indicator Bacteria |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | Not Recorded |
Beneficial Use: | Water Contact Recreation |
Number of Samples: | 0 |
Number of Exceedances: | 0 |
Data and Information Type: | PATHOGEN MONITORING |
Data Used to Assess Water Quality: | Unspecified--This LOE is a placeholder to support a 303(d) listing decision made prior to 2006.
For the 2008 assessment , the 2006 listed coastline 'Pacific Ocean Shoreline, Lower San Juan HSA' was split into smaller segments and each represents an area near the sampling location of the data being assessed. This segment 'Pacific Ocean Shoreline, Lower San Juan HSA, at San Juan Creek' is one of the sampling locations. This LOE is a copy of the 2006 listing placeholder LOE for Pacific Ocean Shoreline, Lower San Juan HSA and is considered by the Regional Board to be applicable to this more specific segment formed from the split. |
Data Reference: | Placeholder reference pre-2006 303(d) |
Water Quality Objective/Criterion: | Unspecified |
Objective/Criterion Reference: | Placeholder reference pre-2006 303(d) |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | |
Temporal Representation: | |
Environmental Conditions: | |
QAPP Information: | Unspecified |
QAPP Information Reference(s): | |
| |
LOE ID: | 29566 |
Pollutant: | Total Coliform |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Water Contact Recreation |
Number of Samples: | 548 |
Number of Exceedances: | 9 |
Data and Information Type: | PWS pathogen monitoring (ambient water) |
Data Used to Assess Water Quality: | Beach monitoring data was collected by the County of Orange from May 2004 through December 2006. A total of 548 single samples were collected with nine samples exceeding the single sample water quality objective. |
Data Reference: | The National Pollutant Discharge Elimination System (NPDES) Municipal Stormwater Permit, Coastal Storm Drain Outfall Program. Bacteria Shoreline Data. 2002 through 2007. |
Water Quality Objective/Criterion: | Geomean: Total coliform density shall not exceed 1,000 per 100ml.
Single Sample Maximum: Total coliform density shall not exceed 10,000 per 100ml (SWRCB, 2005). |
Objective/Criterion Reference: | Water Quality Control Plan Ocean Waters of California. California Ocean Plan 2005. Sacramento, CA: State Water Resources Control Board, California Environmental Protection Agency |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | The only sampling station is located at San Juan Beach Creek 1, SJC1, in the Lower San Juan HSA Doheny State Beach, Dana Point (Latitude 33.461930, Longitude -117.684010). |
Temporal Representation: | Samples were collected at least once a week from May 2004 through December 2006. |
Environmental Conditions: | |
QAPP Information: | Quality control for the bacteria analysis portion of this study was conducted in accordance with the County of Orange Quality Assessment/Quality Control document. |
QAPP Information Reference(s): | County of Orange. Quality Assurance/Quality Control Manual, February 2004. |