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

Supporting Information

Regional Board 8 - Santa Ana Region

Water Body Name: Sunset Beach
Water Body ID: CAX8011100019991013161352
Water Body Type: Coastal & Bay Shoreline
 
DECISION ID
95361
Region 8     
Sunset Beach
 
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)(2016)
Revision Status Original
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 3.2 of the Listing Policy. Under section 3.2 a single line of evidence is necessary to assess listing status.

Twelve (12) lines of evidence are available in the administrative record to assess this pollutant.

Zero (0) of 114 samples exceed the Enterococcus Geomean Objective.
Zero (0) of 58 samples exceed the Enterococcus Single Sample Objective.
Zero (0) of 114 samples exceed the Fecal Coliform Geomean Objective.
Zero (0) of 58 samples exceed the Fecal Coliform Single Sample Objective.
Zero (0) of 113 samples exceed the Total Coliform Geomean Objective.
Zero (0) of 58 samples exceed the Total Coliform Single Sample Objective.

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 (0) of the 114 samples exceed the Enterococcus Geomean Objective, Zero (0) of the 114 samples exceed the Fecal Coliform Geomean Objective, Zero (0) of the 113 samples exceed the Total Coliform Geomean, and this does not exceed the frequency listed in table 3.2
4. Zero (0) of the 58 samples exceed the Enterococcus Single Sample Objective, Zero (0) of the 58 samples exceed the Fecal Coliform Single Sample Objective, Zero (0) of the 58 samples exceed the Total Coliform Single Sample, and this does not exceed the frequency listed in table 3.2
5. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.
 
Regional Board Decision Recommendation: After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be 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:
 
State Board Decision Recommendation: After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.
 
 
Line of Evidence (LOE) for Decision ID 95361, Indicator Bacteria
Region 8     
Sunset Beach
 
LOE ID: 82559
 
Pollutant: Enterococcus
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: Not Specified
Data Used to Assess Water Quality: Zero of the 16 geomeans exceeded the objective.
Data Reference: Data for Region 8 Beach Watch.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The standard for enterococcus states that the 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 SEA WAY.
Temporal Representation: Samples were collected approximately twelve times a month from January 2009 to January 2010 and twice in August 2010.
Environmental Conditions:
QAPP Information: The samples were collected for the beach watch program.
QAPP Information Reference(s):
 
Line of Evidence (LOE) for Decision ID 95361, Indicator Bacteria
Region 8     
Sunset Beach
 
LOE ID: 82557
 
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: PATHOGEN MONITORING
Data Used to Assess Water Quality: Water Board staff assessed BeachWatch data for Sunset Beach to determine beneficial use support and results are as follows: 0 of 58 samples exceed the criterion for Enterococci.
Data Reference: Data for Region 8 Beach Watch.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: California Ocean Plan (SWRCB 2009) single sample maximum states that enterococcus density shall not exceed 104 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 Sunset Beach was collected at 2 monitoring sites [ BROADWAY, SEA WAY]
Temporal Representation: Data was collected over the time period 1/14/2009-1/7/2010.
Environmental Conditions: Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information: The samples were collected for the Beach Watch program.
QAPP Information Reference(s):
 
Line of Evidence (LOE) for Decision ID 95361, Indicator Bacteria
Region 8     
Sunset Beach
 
LOE ID: 8253
 
Pollutant: Enterococcus
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Water Contact Recreation
 
Number of Samples: 84
Number of Exceedances: 0
 
Data and Information Type: PATHOGEN MONITORING
Data Used to Assess Water Quality: Of the 84 samples collected, 0 exceeded the following criteria, or guidelines as stated in the Ocean Plan: Enterococcus <35MPN/100mL
Data Reference: Bacteria data for Orange County beaches downloaded from Orange County Health Care website.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: As stated in the California Ocean Plan, under the SWRCB Water-Contact Standards using a 30d geometric mean maximum, within a zone bounded by the shoreline and a distance of 1,000 feet from the shoreline or the 30-foot depth contour, whichever is further from the shoreline, and in areas outside this zone used for water contact sports, as determined by the Regional Board (i.e., waters designated as REC-1), but including all kelp* beds, the following bacterial objectives shall be maintained throughout the water column: Enterococcus density shall not exceed 35 per 100 ml
Objective/Criterion Reference: Water Quality Control Plan Ocean Waters of California. California Ocean Plan 2005. Sacramento, CA: State Water Resources Control Board, California Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The 84 samples were collected at the Broadway station located in Sunset Beach.
Temporal Representation: The 84 samples were collected weekly between April 2004 and December 2006
Environmental Conditions: The data spanned 3 entire years including wet and dry seasons.
QAPP Information: Data was collected by the Orange County Environmental Health Agency and provided to the Regional Board by the State Water Resources Control Board for the sole purpose of the water quality assessment and update of the 2008 303d list. The EPA Method/Analytical Detection Limit used was EPA_1600.
QAPP Information Reference(s):
 
Line of Evidence (LOE) for Decision ID 95361, Indicator Bacteria
Region 8     
Sunset Beach
 
LOE ID: 8255
 
Pollutant: Fecal Coliform
LOE Subgroup: Subgroup Missing
Matrix: Not Specified
Fraction: None
 
Beneficial Use: Water Contact Recreation
 
Number of Samples: 84
Number of Exceedances: 0
 
Data and Information Type: Not Specified
Data Used to Assess Water Quality: Of the 84 samples collected, 0 exceed the following criteria or guidelines as stated in the Ocean Plan: Fecal Coliform <200MPN/100mL
Data Reference: Bacteria data for Orange County beaches downloaded from Orange County Health Care website.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: As stated in the California Ocean Plan, under the SWRCB Water-Contact Standards using a 30d geometric mean maximum, within a zone bounded by the shoreline and a distance of 1,000 feet from the shoreline or the 30-foot depth contour, whichever is further from the shoreline, and in areas outside this zone used for water contact sports, as determined by the Regional Board (i.e., waters designated as REC-1), but including all kelp* beds, the following bacterial objectives shall be maintained throughout the water column: Fecal Coliform density shall not exceed 200 per 100ml
Objective/Criterion Reference: Water Quality Control Plan Ocean Waters of California. California Ocean Plan 2005. Sacramento, CA: State Water Resources Control Board, California Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The 84 samples were collected at the Broadway station located in Sunset Beach.
Temporal Representation: The 84 were collected weekly between April 2004 and December 2006.
Environmental Conditions: The data spanned 3 entire years including wet and dry seasons.
QAPP Information: Data was collected by the Orange County Environmental Health Agency and provided to the Regional Board by the State Water Resources Control Board for the sole purpose of the water quality assessment and update of the 2008 303d list. The EPA Method/Analytical Detection Limit used was MF_APHA_9222_D.
QAPP Information Reference(s):
 
Line of Evidence (LOE) for Decision ID 95361, Indicator Bacteria
Region 8     
Sunset Beach
 
LOE ID: 82558
 
Pollutant: Enterococcus
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Water Contact Recreation
 
Number of Samples: 14
Number of Exceedances: 0
 
Data and Information Type: Not Specified
Data Used to Assess Water Quality: Zero of the 14 geomeans exceeded the objective.
Data Reference: Data for Region 8 Beach Watch.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The standard for enterococcus states that the 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 BROADWAY.
Temporal Representation: Samples were collected approximately twelve times a month from January 2009 to January 2010 and twice in August 2010.
Environmental Conditions:
QAPP Information: The samples were collected for the beach watch program.
QAPP Information Reference(s):
 
Line of Evidence (LOE) for Decision ID 95361, Indicator Bacteria
Region 8     
Sunset Beach
 
LOE ID: 8256
 
Pollutant: Total Coliform
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Water Contact Recreation
 
Number of Samples: 83
Number of Exceedances: 0
 
Data and Information Type: PATHOGEN MONITORING
Data Used to Assess Water Quality: Of the 83 samples collected, 0 exceeded the standards/guidelines listed above.
Data Reference: Bacteria data for Orange County beaches downloaded from Orange County Health Care website.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: As stated in the California Ocean Plan, under the SWRCB Water-Contact Standards using a 30d geometric mean maximum, within a zone bounded by the shoreline and a distance of 1,000 feet from the shoreline or the 30-foot depth contour, whichever is further from the shoreline, and in areas outside this zone used for water contact sports, as determined by the Regional Board (i.e., waters designated as REC-1), but including all kelp* beds, the following bacterial objectives shall be maintained throughout the water column: Total Coliform density shall not exceed 1,000 per 100
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 83 samples were collected at the Broadway station located in Sunset Beach.
Temporal Representation: The 83 samples were collected
Environmental Conditions: The data spanned 3 entire years including wet and dry seasons.
QAPP Information: Data was collected by the Orange County Environmental Health Agency and provided to the Regional Board by the State Water Resources Control Board for the sole purpose of the water quality assessment and update of the 2008 303d list. The EPA Method/Analytical Detection Limit used was MF_APHA_922_B.
QAPP Information Reference(s):
 
Line of Evidence (LOE) for Decision ID 95361, Indicator Bacteria
Region 8     
Sunset Beach
 
LOE ID: 82561
 
Pollutant: Fecal Coliform
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Water Contact Recreation
 
Number of Samples: 14
Number of Exceedances: 0
 
Data and Information Type: Not Specified
Data Used to Assess Water Quality: Zero of the 14 geomeans exceeded the objective.
Data Reference: Data for Region 8 Beach Watch.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The standard for fecal coliform states that the coliform density shall not exceed 400 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 BROADWAY.
Temporal Representation: Samples were collected approximately twice a month from January 2009 to January 2010 and once in August 2010.
Environmental Conditions:
QAPP Information: The samples were collected for the beach watch program.
QAPP Information Reference(s):
 
Line of Evidence (LOE) for Decision ID 95361, Indicator Bacteria
Region 8     
Sunset Beach
 
LOE ID: 82562
 
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: Not Specified
Data Used to Assess Water Quality: Zero of the 16 geomeans exceeded the objective.
Data Reference: Data for Region 8 Beach Watch.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The standard for fecal coliform states that the coliform density shall not exceed 400 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 SEA WAY.
Temporal Representation: Samples were collected approximately twice a month from January 2009 to January 2010 and once in August 2010.
Environmental Conditions:
QAPP Information: The samples were collected for the beach watch program.
QAPP Information Reference(s):
 
Line of Evidence (LOE) for Decision ID 95361, Indicator Bacteria
Region 8     
Sunset Beach
 
LOE ID: 82563
 
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: PATHOGEN MONITORING
Data Used to Assess Water Quality: Water Board staff assessed BeachWatch data for Sunset Beach to determine beneficial use support and results are as follows: 0 of 58 samples exceed the criterion for Coliform, Total.
Data Reference: Data for Region 8 Beach Watch.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: California Ocean Plan (2009) single sample maximum states that total coliform density shall not exceed 10,000 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 Sunset Beach was collected at 2 monitoring sites [ BROADWAY, SEA WAY]
Temporal Representation: Data was collected over the time period 1/14/2009-1/7/2010.
Environmental Conditions: Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information: The samples were collected for the Beach Watch program.
QAPP Information Reference(s):
 
Line of Evidence (LOE) for Decision ID 95361, Indicator Bacteria
Region 8     
Sunset Beach
 
LOE ID: 82564
 
Pollutant: Total Coliform
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Water Contact Recreation
 
Number of Samples: 14
Number of Exceedances: 0
 
Data and Information Type: Not Specified
Data Used to Assess Water Quality: Zero of the 14 geomeans exceeded the objective.
Data Reference: Data for Region 8 Beach Watch.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The 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 BROADWAY.
Temporal Representation: Samples were collected approximately twice a month from January 2009 to January 2010 and once in August 2010.
Environmental Conditions:
QAPP Information: The samples were collected for the beach watch program.
QAPP Information Reference(s):
 
Line of Evidence (LOE) for Decision ID 95361, Indicator Bacteria
Region 8     
Sunset Beach
 
LOE ID: 82572
 
Pollutant: Total 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: Not Specified
Data Used to Assess Water Quality: Zero of the 16 geomeans exceeded the objective.
Data Reference: Data for Region 8 Beach Watch.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The 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 SEA WAY.
Temporal Representation: Samples were collected approximately twice a month from January 2009 to January 2010 and once in August 2010.
Environmental Conditions:
QAPP Information: The samples were collected for the beach watch program.
QAPP Information Reference(s):
 
Line of Evidence (LOE) for Decision ID 95361, Indicator Bacteria
Region 8     
Sunset Beach
 
LOE ID: 82560
 
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: PATHOGEN MONITORING
Data Used to Assess Water Quality: Water Board staff assessed BeachWatch data for Sunset Beach to determine beneficial use support and results are as follows: 0 of 58 samples exceed the criterion for Coliform, Fecal.
Data Reference: Data for Region 8 Beach Watch.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: California Ocean Plan (SWRCB 2009) single sample maximum states that fecal coliform density shall not exceed 400 per 100ml
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 Sunset Beach was collected at 2 monitoring sites [ BROADWAY, SEA WAY]
Temporal Representation: Data was collected over the time period 1/14/2009-1/7/2010.
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):