Final California 2014 and 2016 Integrated Report (303(d) List/305(b) Report)

Supporting Information

Regional Board 9 - San Diego Region

Water Body Name: Pacific Ocean Shoreline, Dana Point HSA, at Salt Creek outlet at Monarch Beach
Water Body ID: CAC9011400020090505125551
Water Body Type: Coastal & Bay Shoreline
 
DECISION ID
43463
Region 9     
Pacific Ocean Shoreline, Dana Point HSA, at Salt Creek outlet at Monarch Beach
 
Pollutant: Indicator Bacteria
Final Listing Decision: Do Not Delist from 303(d) list (being addressed with USEPA approved TMDL)
Last Listing Cycle's Final Listing Decision: Do Not Delist from 303(d) list (TMDL required list)(2012)
Revision Status Revised
Sources: Source Unknown
TMDL Name: Bacteria Impaired Waters I (creeks and beach shorelines)
TMDL Project Code: 169
Date TMDL Approved by USEPA: 06/22/2011
Impairment from Pollutant or Pollution: Pollutant
 
Regional Board Conclusion: This pollutant is being considered for removal on the CWA section 303(d) List under sections 2.2 and 4.2 of the Listing Policy. Under Section 4.2 of the Policy, a minimum of one line of evidence is needed to assess listing status.

Eleven lines of evidence are available in the administrative record to assess this pollutant.

Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against removing this water segment-pollutant combination from the CWA section 303(d) List. There is sufficient justification to place it in the Being Addressed portion of the CWA 303(d) List because a TMDL has been completed and approved by RWQCB and USEPA, and is expected to result in attainment of the standard.

This conclusion is based on the staff findings that:
1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy.
2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy.
3. With the latest data, 154 of 212 geomean samples exceed the water quality objective for enterococcus for the protection of REC-1, 56 of 217 geomean samples exceed the WQO for total coliform for the protection of REC-1, and 73 of 198 exceed the WQO for total coliform for the protection of SHELL, and these exceed the allowable frequency listed in Table 4.2 of the Listing Policy.
4. The Bacteria TMDL for 20 beaches/creeks was approved by USEPA on 06/22/2011.
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 removed from the section 303(d) list because applicable water quality standards for the pollutant are being exceeded.
 
State Board Review of Regional Board Conclusion and Recommendation:
 
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 43463, Indicator Bacteria
Region 9     
Pacific Ocean Shoreline, Dana Point HSA, at Salt Creek outlet at Monarch Beach
 
LOE ID: 30803
 
Pollutant: Total Coliform
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Water Contact Recreation
 
Number of Samples: 95
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 City of Dana Point from a January 2005 through January 2007. There were 105 individual samples collected of which 95 are dry weather (AB411) samples with no samples exceeding the single sample maximum water quality objective.
Data Reference: Ocean Bacteriological Data Evaluation for Dana Point HSA, City of Dana Point, November 2005 - December 2006.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Single Sample Maximum: Total coliform density shall not exceed 10,000 per 100ml;

Geomean: Total coliform density shall not exceed 1,000 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 taken at a sampling station located north of the Salt Creek outlet at the surfzone of Monarch Beach (station id OSL25). Lat/Long: 33.48172/-117.72595.
Temporal Representation: Samples were collected weekly from January 2005 through January 2007.
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 Bacteria specific
 
Line of Evidence (LOE) for Decision ID 43463, Indicator Bacteria
Region 9     
Pacific Ocean Shoreline, Dana Point HSA, at Salt Creek outlet at Monarch Beach
 
LOE ID: 74528
 
Pollutant: Enterococcus
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Water Contact Recreation
 
Number of Samples: 149
Number of Exceedances: 70
 
Data and Information Type: Not Specified
Data Used to Assess Water Quality: Seventy of the 149 samples exceeded the enterococcus objective. For this station, samples were collected from surfzone upcoast and surfzone downcoast. The results represent the higher of the two values.
Data Reference: Data for Various Waterbodies in Region 8 and Region 9, 2006-2009.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The single sample enterococcus concentration shall not exceed more than 104/100ml. Water Quality Control Plan for the San Diego Basin. California Ocean Plan.
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
  California Ocean Plan Water Quality Control Plan Ocean Waters of California 2009
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected from Coastal Salt Creek Mouth (surfzone upcoast and surfzone downcoast).
Temporal Representation: The samples were collected once a week from July 2006 to 2009.
Environmental Conditions:
QAPP Information: The samples were collected and analyzed under the Quality Assurance Management Plan for The Orange County Stormwater Program. Coastal Stormdrain Outfall Monitoring Program.
QAPP Information Reference(s):
 
Line of Evidence (LOE) for Decision ID 43463, Indicator Bacteria
Region 9     
Pacific Ocean Shoreline, Dana Point HSA, at Salt Creek outlet at Monarch Beach
 
LOE ID: 74529
 
Pollutant: Enterococcus
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Water Contact Recreation
 
Number of Samples: 138
Number of Exceedances: 125
 
Data and Information Type: Not Specified
Data Used to Assess Water Quality: One hundred twenty-five of the 138 geomeans exceeded the enterococcus objective. For this station, samples were collected from surfzone upcoast and surfzone downcoast. The higher of the two values was used for the geomean calculation.
Data Reference: Data for Various Waterbodies in Region 8 and Region 9, 2006-2009.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The geometric mean for enterococcus shall not exceed 35 MPN/100 mL. Water Quality Control Plan for the San Diego Basin. California Ocean Plan.
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected from Salt Creek Mouth (surfzone upcoast and surfzone downcoast).
Temporal Representation: The samples were collected once a week from July 2006 to 2009.
Environmental Conditions:
QAPP Information: The samples were collected and analyzed under the Quality Assurance Management Plan for The Orange County Stormwater Program. Coastal Stormdrain Outfall Monitoring Program.
QAPP Information Reference(s):
 
Line of Evidence (LOE) for Decision ID 43463, Indicator Bacteria
Region 9     
Pacific Ocean Shoreline, Dana Point HSA, at Salt Creek outlet at Monarch Beach
 
LOE ID: 74792
 
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: Not Specified
Data Used to Assess Water Quality: Zero of the 40 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 total 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 Monarch Beach.
Temporal Representation: Samples were collected from January 2008 to October 2009.
Environmental Conditions:
QAPP Information: The samples were collected for the Beach Watch program.
QAPP Information Reference(s):
 
Line of Evidence (LOE) for Decision ID 43463, Indicator Bacteria
Region 9     
Pacific Ocean Shoreline, Dana Point HSA, at Salt Creek outlet at Monarch Beach
 
LOE ID: 74793
 
Pollutant: Total Coliform
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Water Contact Recreation
 
Number of Samples: 14
Number of Exceedances: 13
 
Data and Information Type: Not Specified
Data Used to Assess Water Quality: Thirteen of the fourteen 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 total 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 Salt Creek.
Temporal Representation: Samples were collected from January 2008 to October 2009.
Environmental Conditions:
QAPP Information: The samples were collected for the Beach Watch program.
QAPP Information Reference(s):
 
Line of Evidence (LOE) for Decision ID 43463, Indicator Bacteria
Region 9     
Pacific Ocean Shoreline, Dana Point HSA, at Salt Creek outlet at Monarch Beach
 
LOE ID: 75110
 
Pollutant: Enterococcus
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Water Contact Recreation
 
Number of Samples: 40
Number of Exceedances: 10
 
Data and Information Type: Not Specified
Data Used to Assess Water Quality: Ten of the 40 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 Monarch Beach.
Temporal Representation: Samples were collected from January 2008 to October 2009.
Environmental Conditions:
QAPP Information: The samples were collected for the Beach Watch program.
QAPP Information Reference(s):
 
Line of Evidence (LOE) for Decision ID 43463, Indicator Bacteria
Region 9     
Pacific Ocean Shoreline, Dana Point HSA, at Salt Creek outlet at Monarch Beach
 
LOE ID: 75111
 
Pollutant: Enterococcus
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Water Contact Recreation
 
Number of Samples: 19
Number of Exceedances: 19
 
Data and Information Type: Not Specified
Data Used to Assess Water Quality: Nineteen of the 19 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 Salt Creek.
Temporal Representation: Samples were collected from January 2008 to October 2009.
Environmental Conditions:
QAPP Information: The samples were collected for the Beach Watch program.
QAPP Information Reference(s):
 
Line of Evidence (LOE) for Decision ID 43463, Indicator Bacteria
Region 9     
Pacific Ocean Shoreline, Dana Point HSA, at Salt Creek outlet at Monarch Beach
 
LOE ID: 75112
 
Pollutant: Fecal Coliform
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Water Contact Recreation
 
Number of Samples: 149
Number of Exceedances: 17
 
Data and Information Type: Not Specified
Data Used to Assess Water Quality: Seventeen of the 149 samples exceeded the fecal coliform objective. For this station, samples were collected from surfzone upcoast and surfzone downcoast. The results represent the higher of the two values.
Data Reference: Data for Various Waterbodies in Region 8 and Region 9, 2006-2009.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The single sample fecal coliform concentration shall not exceed more than 400/100ml. Water Quality Control Plan for the San Diego Basin. California Ocean Plan.
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected from Salt Creek Mouth (surfzone upcoast and surfzone downcoast).
Temporal Representation: The samples were collected once a week from July 2006 to 2009.
Environmental Conditions:
QAPP Information: The samples were collected and analyzed under the Quality Assurance Management Plan for The Orange County Stormwater Program. Coastal Stormdrain Outfall Monitoring Program.
QAPP Information Reference(s):
 
Line of Evidence (LOE) for Decision ID 43463, Indicator Bacteria
Region 9     
Pacific Ocean Shoreline, Dana Point HSA, at Salt Creek outlet at Monarch Beach
 
LOE ID: 75113
 
Pollutant: Fecal Coliform
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Water Contact Recreation
 
Number of Samples: 138
Number of Exceedances: 11
 
Data and Information Type: Not Specified
Data Used to Assess Water Quality: Eleven of the 138 geomeans exceeded the fecal coliform objective. For this station, samples were collected from surfzone upcoast and surfzone downcoast. The higher of the two values was used for the geomean calculation.
Data Reference: Data for Various Waterbodies in Region 8 and Region 9, 2006-2009.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The geometric mean for fecal coliform shall not exceed more than 200/100ml. Water Quality Control Plan for the San Diego Basin. California Ocean Plan.
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected from Salt Creek Mouth (surfzone upcoast and surfzone downcoast).
Temporal Representation: The samples were collected once a week from July 2006 to 2009.
Environmental Conditions:
QAPP Information: The samples were collected and analyzed under the Quality Assurance Management Plan for The Orange County Stormwater Program. Coastal Stormdrain Outfall Monitoring Program.
QAPP Information Reference(s):
 
Line of Evidence (LOE) for Decision ID 43463, Indicator Bacteria
Region 9     
Pacific Ocean Shoreline, Dana Point HSA, at Salt Creek outlet at Monarch Beach
 
LOE ID: 75114
 
Pollutant: Fecal Coliform
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Water Contact Recreation
 
Number of Samples: 19
Number of Exceedances: 17
 
Data and Information Type: Not Specified
Data Used to Assess Water Quality: Seventeen of the 19 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 fecal coliform states that the fecal 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 Salt Creek.
Temporal Representation: Samples were collected from January 2008 to October 2009.
Environmental Conditions:
QAPP Information: The samples were collected for the Beach Watch program.
QAPP Information Reference(s):
 
Line of Evidence (LOE) for Decision ID 43463, Indicator Bacteria
Region 9     
Pacific Ocean Shoreline, Dana Point HSA, at Salt Creek outlet at Monarch Beach
 
LOE ID: 75115
 
Pollutant: Fecal 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: Not Specified
Data Used to Assess Water Quality: Zero of the 40 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 fecal coliform states that the fecal 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 Monarch Beach.
Temporal Representation: Samples were collected from January 2008 to October 2009.
Environmental Conditions:
QAPP Information: The samples were collected for the Beach Watch program.
QAPP Information Reference(s):
 
Line of Evidence (LOE) for Decision ID 43463, Indicator Bacteria
Region 9     
Pacific Ocean Shoreline, Dana Point HSA, at Salt Creek outlet at Monarch Beach
 
LOE ID: 30297
 
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, Dana Point HSA' was split into smaller segments that each represent an area near the sampling location of the data being assessed. This segment 'Pacific Ocean Shoreline, Dana Point HSA, at Salt Creek outlet at Monarch Beach' is one of the sampling locations. This LOE is a copy of the 2006 listing placeholder LOE for Pacific Ocean Shoreline, Dana Point 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)
 
SWAMP Data: Non-SWAMP
 
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):
 
Line of Evidence (LOE) for Decision ID 43463, Indicator Bacteria
Region 9     
Pacific Ocean Shoreline, Dana Point HSA, at Salt Creek outlet at Monarch Beach
 
LOE ID: 77602
 
Pollutant: Total Coliform
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Shellfish Harvesting
 
Number of Samples: 58
Number of Exceedances: 36
 
Data and Information Type: PATHOGEN MONITORING
Data Used to Assess Water Quality: Thirty-six of the fifty-eight 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, Dana Point HSA, at Salt Creek outlet at Monarch. At two sites, Monarch Beach - North and Salt Creek.
Temporal Representation: The samples were collected from January 2008 to October 2009.
Environmental Conditions:
QAPP Information: The samples were collected for the beach watch program.
QAPP Information Reference(s):
 
Line of Evidence (LOE) for Decision ID 43463, Indicator Bacteria
Region 9     
Pacific Ocean Shoreline, Dana Point HSA, at Salt Creek outlet at Monarch Beach
 
LOE ID: 75153
 
Pollutant: Total Coliform
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Shellfish Harvesting
 
Number of Samples: 93
Number of Exceedances: 43
 
Data and Information Type: PATHOGEN MONITORING
Data Used to Assess Water Quality: Water Board staff assessed BW data for Pacific Ocean Shoreline, Dana Point HSA, at Salt Creek outlet at Monarch to determine beneficial use support and results are as follows: 43 of 93 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, Dana Point HSA, at Salt Creek outlet at Monarch was collected at 2 monitoring sites [ MONARCH BEACH NORTH, SALT CREEK]
Temporal Representation: Data was collected over the time period 1/3/2008-10/27/2009.
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 43463, Indicator Bacteria
Region 9     
Pacific Ocean Shoreline, Dana Point HSA, at Salt Creek outlet at Monarch Beach
 
LOE ID: 75154
 
Pollutant: Total Coliform
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Water Contact Recreation
 
Number of Samples: 138
Number of Exceedances: 43
 
Data and Information Type: Not Specified
Data Used to Assess Water Quality: Forty-three of the 138 samples exceeded the total coliform objective. For these stations, samples were collected from surfzone upcoast and surfzone downcoast. The higher of the two values was used for the geomean calculation.
Data Reference: Data for Various Waterbodies in Region 8 and Region 9, 2006-2009.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The geometric mean for total coliform shall not exceed more than 1000/100ml. Water Quality Control Plan for the San Diego Basin. Water Quality Control Plan for Ocean Waters.
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected fromSalt Creek Mouth (surfzone upcoast and surfzone downcoast).
Temporal Representation: The samples were collected once a week from July 2006 to 2009.
Environmental Conditions:
QAPP Information: The samples were collected and analyzed under the Quality Assurance Management Plan for The Orange County Stormwater Program. Coastal Stormdrain Outfall Monitoring Program.
QAPP Information Reference(s):
 
Line of Evidence (LOE) for Decision ID 43463, Indicator Bacteria
Region 9     
Pacific Ocean Shoreline, Dana Point HSA, at Salt Creek outlet at Monarch Beach
 
LOE ID: 30689
 
Pollutant: Fecal Coliform
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Water Contact Recreation
 
Number of Samples: 94
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 City of Dana Point from a January 2005 through January 2007. There were 105 individual samples collected of which 94 are dry weather (AB411) samples with five samples exceeding the single sample water quality objective.
Data Reference: Ocean Bacteriological Data Evaluation for Dana Point HSA, City of Dana Point, November 2005 - December 2006.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Single Sample Maximum: Fecal coliform density shall not exceed 400 per 100 ml;

Geomean: Fecal coliform density shall not exceed 200 per 100ml (SWRCB, 2005).
Objective/Criterion Reference: Water Quality Control Plan Ocean Waters of California. California Ocean Plan 2005. Sacramento, CA: State Water Resources Control Board, California Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: Samples were taken at a sampling station located north of the Salt Creek outlet at the surfzone of Monarch Beach (station id OSL25). Lat/Long: 33.48172/-117.72595.
Temporal Representation: Samples were collected weekly from January 2005 through January 2007.
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 Bacteria specific
 
Line of Evidence (LOE) for Decision ID 43463, Indicator Bacteria
Region 9     
Pacific Ocean Shoreline, Dana Point HSA, at Salt Creek outlet at Monarch Beach
 
LOE ID: 29561
 
Pollutant: Enterococcus
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Water Contact Recreation
 
Number of Samples: 8
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 City of Dana Point from a January 2005 through January 2007. There were 63 individual samples collected with eight samples correlated with a storm event. None of the storm samples exceeded the single sample water quality objective. This information will not be used in determining a listing decision, but is of interest to the Regional Board and has been included here as additional anecdotal information.
Data Reference: Ocean Bacteriological Data Evaluation for Dana Point HSA, City of Dana Point, November 2005 - December 2006.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Single Sample Maximum: Enterococcus density shall not exceed 104 per 100 ml;

Geomean: Enterococcus density shall not exceed 35 per 100 ml (SWRCB, 2005).
Objective/Criterion Reference: Water Quality Control Plan Ocean Waters of California. California Ocean Plan 2005. Sacramento, CA: State Water Resources Control Board, California Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: Samples were taken at a sampling station located north of the Salt Creek outlet at the surfzone of Monarch Beach (station id OSL25). Lat/Long: 33.48172/-117.72595.
Temporal Representation: Samples were collected weekly from January 2005 through January 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 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 Bacteria specific
 
Line of Evidence (LOE) for Decision ID 43463, Indicator Bacteria
Region 9     
Pacific Ocean Shoreline, Dana Point HSA, at Salt Creek outlet at Monarch Beach
 
LOE ID: 29560
 
Pollutant: Enterococcus
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Water Contact Recreation
 
Number of Samples: 15
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 City of Dana Point from a January 2005 through January 2007. There were 63 individual samples collected with 15 monthly geomeans calculated. None of the geomeans exceeded the geomean water quality objective.
Data Reference: Ocean Bacteriological Data Evaluation for Dana Point HSA, City of Dana Point, November 2005 - December 2006.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Single Sample Maximum: Enterococcus density shall not exceed 104 per 100 ml;

Geomean: Enterococcus density shall not exceed 35 per 100 ml (SWRCB, 2005).
Objective/Criterion Reference: Water Quality Control Plan Ocean Waters of California. California Ocean Plan 2005. Sacramento, CA: State Water Resources Control Board, California Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: Samples were taken at a sampling station located north of the Salt Creek outlet at the surfzone of Monarch Beach (station id OSL25). Lat/Long: 33.48172/-117.72595.
Temporal Representation: Samples were collected weekly from January 2005 through January 2007.
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 Bacteria specific
 
Line of Evidence (LOE) for Decision ID 43463, Indicator Bacteria
Region 9     
Pacific Ocean Shoreline, Dana Point HSA, at Salt Creek outlet at Monarch Beach
 
LOE ID: 29559
 
Pollutant: Enterococcus
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Water Contact Recreation
 
Number of Samples: 63
Number of Exceedances: 6
 
Data and Information Type: PWS pathogen monitoring (ambient water)
Data Used to Assess Water Quality: Beach monitoring data was collected by the City of Dana Point from a January 2005 through January 2007. There were 63 individual samples collected with 6 samples exceeding the single sample water quality objective.
Data Reference: Ocean Bacteriological Data Evaluation for Dana Point HSA, City of Dana Point, November 2005 - December 2006.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Single Sample Maximum: Enterococcus density shall not exceed 104 per 100 ml;

Geomean: Enterococcus density shall not exceed 35 per 100 ml (SWRCB, 2005).
Objective/Criterion Reference: Water Quality Control Plan Ocean Waters of California. California Ocean Plan 2005. Sacramento, CA: State Water Resources Control Board, California Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: Samples were taken at a sampling station located north of the Salt Creek outlet at the surfzone of Monarch Beach (station id OSL25). Lat/Long: 33.48172/-117.72595.
Temporal Representation: Samples were collected weekly from January 2005 through January 2007.
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 Bacteria specific
 
Line of Evidence (LOE) for Decision ID 43463, Indicator Bacteria
Region 9     
Pacific Ocean Shoreline, Dana Point HSA, at Salt Creek outlet at Monarch Beach
 
LOE ID: 29558
 
Pollutant: Fecal Coliform
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Water Contact Recreation
 
Number of Samples: 11
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 City of Dana Point from a January 2005 through January 2007. There were 105 individual samples collected with 11 samples correlated with a storm event. One of the 11 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: Ocean Bacteriological Data Evaluation for Dana Point HSA, City of Dana Point, November 2005 - December 2006.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Single Sample Maximum: Fecal coliform density shall not exceed 400 per 100 ml;

Geomean: Fecal coliform density shall not exceed 200 per 100ml (SWRCB, 2005).
Objective/Criterion Reference: Water Quality Control Plan Ocean Waters of California. California Ocean Plan 2005. Sacramento, CA: State Water Resources Control Board, California Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: Samples were taken at a sampling station located north of the Salt Creek outlet at the surfzone of Monarch Beach (station id OSL25). Lat/Long: 33.48172/-117.72595.
Temporal Representation: Samples were collected weekly from January 2005 through January 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 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 Bacteria specific
 
Line of Evidence (LOE) for Decision ID 43463, Indicator Bacteria
Region 9     
Pacific Ocean Shoreline, Dana Point HSA, at Salt Creek outlet at Monarch Beach
 
LOE ID: 29552
 
Pollutant: Total Coliform
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Shellfish Harvesting
 
Number of Samples: 10
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 City of Dana Point from a January 2005 through January 2007. There were 105 individual samples collected with 10 samples correlated with a storm event. One of the 10 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: Ocean Bacteriological Data Evaluation for Dana Point HSA, City of Dana Point, November 2005 - December 2006.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: From the Ocean Plan, the median total coliform density shall not exceed 70 per 100 ml, and not more than 10 percent of the samples shall exceed 230 per 100 ml (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 taken at a sampling station located north of the Salt Creek outlet at the surfzone of Monarch Beach (station id OSL25). Lat/Long: 33.48172/-117.72595.
Temporal Representation: Samples were collected weekly from January 2005 through January 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 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 Bacteria specific
 
Line of Evidence (LOE) for Decision ID 43463, Indicator Bacteria
Region 9     
Pacific Ocean Shoreline, Dana Point HSA, at Salt Creek outlet at Monarch Beach
 
LOE ID: 29551
 
Pollutant: Total Coliform
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Shellfish Harvesting
 
Number of Samples: 105
Number of Exceedances: 30
 
Data and Information Type: PWS pathogen monitoring (ambient water)
Data Used to Assess Water Quality: Beach monitoring data was collected by the City of Dana Point from a January 2005 through January 2007. There were 105 individual samples collected with 30 exceeding the shellfish single sample maximum water quality objective for total coliform.
Data Reference: Ocean Bacteriological Data Evaluation for Dana Point HSA, City of Dana Point, November 2005 - December 2006.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: From the Ocean Plan, the median total coliform density shall not exceed 70 per 100 ml, and not more than 10 percent of the samples shall exceed 230 per 100 ml (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 taken at a sampling station located north of the Salt Creek outlet at the surfzone of Monarch Beach (station id OSL25). Lat/Long: 33.48172/-117.72595.
Temporal Representation: Samples were collected weekly from January 2005 through January 2007.
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 Bacteria specific
 
Line of Evidence (LOE) for Decision ID 43463, Indicator Bacteria
Region 9     
Pacific Ocean Shoreline, Dana Point HSA, at Salt Creek outlet at Monarch Beach
 
LOE ID: 29555
 
Pollutant: Total Coliform
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Water Contact Recreation
 
Number of Samples: 10
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 City of Dana Point from a January 2005 through January 2007. There were 105 individual samples collected with 10 samples correlated with a storm event. None of the 10 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: Ocean Bacteriological Data Evaluation for Dana Point HSA, City of Dana Point, November 2005 - December 2006.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Single Sample Maximum: Total coliform density shall not exceed 10,000 per 100ml;

Geomean: Total coliform density shall not exceed 1,000 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 taken at a sampling station located north of the Salt Creek outlet at the surfzone of Monarch Beach (station id OSL25). Lat/Long: 33.48172/-117.72595.
Temporal Representation: Samples were collected weekly from January 2005 through January 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 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 Bacteria specific
 
Line of Evidence (LOE) for Decision ID 43463, Indicator Bacteria
Region 9     
Pacific Ocean Shoreline, Dana Point HSA, at Salt Creek outlet at Monarch Beach
 
LOE ID: 29554
 
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 City of Dana Point from a January 2005 through January 2007. There were 105 individual samples collected with 25 monthly geomeans calculated. None of the geomeans exceeded the geomean water quality objective.
Data Reference: Ocean Bacteriological Data Evaluation for Dana Point HSA, City of Dana Point, November 2005 - December 2006.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Single Sample Maximum: Total coliform density shall not exceed 10,000 per 100ml;

Geomean: Total coliform density shall not exceed 1,000 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 taken at a sampling station located north of the Salt Creek outlet at the surfzone of Monarch Beach (station id OSL25). Lat/Long: 33.48172/-117.72595.
Temporal Representation: Samples were collected weekly from January 2005 through January 2007.
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 Bacteria specific
 
Line of Evidence (LOE) for Decision ID 43463, Indicator Bacteria
Region 9     
Pacific Ocean Shoreline, Dana Point HSA, at Salt Creek outlet at Monarch Beach
 
LOE ID: 29553
 
Pollutant: Total Coliform
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Water Contact Recreation
 
Number of Samples: 105
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 City of Dana Point from a January 2005 through January 2007. There were 105 individual samples collected with no samples exceeding the single sample maximum water quality objective.
Data Reference: Ocean Bacteriological Data Evaluation for Dana Point HSA, City of Dana Point, November 2005 - December 2006.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Single Sample Maximum: Total coliform density shall not exceed 10,000 per 100ml;

Geomean: Total coliform density shall not exceed 1,000 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 taken at a sampling station located north of the Salt Creek outlet at the surfzone of Monarch Beach (station id OSL25). Lat/Long: 33.48172/-117.72595.
Temporal Representation: Samples were collected weekly from January 2005 through January 2007.
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 Bacteria specific
 
Line of Evidence (LOE) for Decision ID 43463, Indicator Bacteria
Region 9     
Pacific Ocean Shoreline, Dana Point HSA, at Salt Creek outlet at Monarch Beach
 
LOE ID: 30567
 
Pollutant: Enterococcus
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Water Contact Recreation
 
Number of Samples: 63
Number of Exceedances: 6
 
Data and Information Type: PWS pathogen monitoring (ambient water)
Data Used to Assess Water Quality: Beach monitoring data was collected by the City of Dana Point from a January 2005 through January 2007. There were 63 individual samples collected of which 55 are dry weather (AB 411) samples with 6 samples exceeding the single sample water quality objective.
Data Reference: Ocean Bacteriological Data Evaluation for Dana Point HSA, City of Dana Point, November 2005 - December 2006.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Single Sample Maximum: Enterococcus density shall not exceed 104 per 100 ml;

Geomean: Enterococcus density shall not exceed 35 per 100 ml (SWRCB, 2005).
Objective/Criterion Reference: Water Quality Control Plan Ocean Waters of California. California Ocean Plan 2005. Sacramento, CA: State Water Resources Control Board, California Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: Samples were taken at a sampling station located north of the Salt Creek outlet at the surfzone of Monarch Beach (station id OSL25). Lat/Long: 33.48172/-117.72595.
Temporal Representation: Samples were collected weekly from January 2005 through January 2007.
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 Bacteria specific
 
Line of Evidence (LOE) for Decision ID 43463, Indicator Bacteria
Region 9     
Pacific Ocean Shoreline, Dana Point HSA, at Salt Creek outlet at Monarch Beach
 
LOE ID: 29557
 
Pollutant: Fecal Coliform
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Water Contact Recreation
 
Number of Samples: 24
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 City of Dana Point from a January 2005 through January 2007. There were 105 individual samples collected with 24 monthly geomeans calculated. None of the geomeans exceeded the geomean water quality objective.
Data Reference: Ocean Bacteriological Data Evaluation for Dana Point HSA, City of Dana Point, November 2005 - December 2006.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Single Sample Maximum: Fecal coliform density shall not exceed 400 per 100 ml;

Geomean: Fecal coliform density shall not exceed 200 per 100ml (SWRCB, 2005).
Objective/Criterion Reference: Water Quality Control Plan Ocean Waters of California. California Ocean Plan 2005. Sacramento, CA: State Water Resources Control Board, California Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: Samples were taken at a sampling station located north of the Salt Creek outlet at the surfzone of Monarch Beach (station id OSL25). Lat/Long: 33.48172/-117.72595.
Temporal Representation: Samples were collected weekly from January 2005 through January 2007.
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 Bacteria specific
 
Line of Evidence (LOE) for Decision ID 43463, Indicator Bacteria
Region 9     
Pacific Ocean Shoreline, Dana Point HSA, at Salt Creek outlet at Monarch Beach
 
LOE ID: 75155
 
Pollutant: Total Coliform
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Water Contact Recreation
 
Number of Samples: 149
Number of Exceedances: 5
 
Data and Information Type: Not Specified
Data Used to Assess Water Quality: Five of the 149 samples exceeded the total coliform objective. For these stations, samples were collected from surfzone upcoast and surfzone downcoast. The results represent the higher of the two values.
Data Reference: Data for Various Waterbodies in Region 8 and Region 9, 2006-2009.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: The single sample total coliform concentration shall not exceed more than 10000/100ml. Water Quality Control Plan for the San Diego Basin. Water Quality Control Plan for Ocean Waters.
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
  California Ocean Plan Water Quality Control Plan Ocean Waters of California 2009
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The samples were collected from Salt Creek Mouth (surfzone upcoast and surfzone downcoast).
Temporal Representation: The samples were collected once a week from July 2006 to 2009.
Environmental Conditions:
QAPP Information: The samples were collected and analyzed under the Quality Assurance Management Plan for The Orange County Stormwater Program. Coastal Stormdrain Outfall Monitoring Program.
QAPP Information Reference(s):
 
Line of Evidence (LOE) for Decision ID 43463, Indicator Bacteria
Region 9     
Pacific Ocean Shoreline, Dana Point HSA, at Salt Creek outlet at Monarch Beach
 
LOE ID: 29232
 
Pollutant: Indicator Bacteria
LOE Subgroup: Health Advisories
Matrix: -N/A
Fraction: None
 
Beneficial Use: Water Contact Recreation
 
Number of Samples: 2555
Number of Exceedances: 461
 
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 461 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
 
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:
 
Spatial Representation: Bacteriological monitoring samples were collected at Monarch Beach, Salt Creek County Beach, Dana Strands, and Ocean Institute Beach. The posting covers 3 miles of beach shoreline.
Temporal Representation: The beach posting 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 (County of Orange, 2004).
QAPP Information Reference(s):
 
Line of Evidence (LOE) for Decision ID 43463, Indicator Bacteria
Region 9     
Pacific Ocean Shoreline, Dana Point HSA, at Salt Creek outlet at Monarch Beach
 
LOE ID: 29556
 
Pollutant: Fecal Coliform
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Water Contact Recreation
 
Number of Samples: 105
Number of Exceedances: 6
 
Data and Information Type: PWS pathogen monitoring (ambient water)
Data Used to Assess Water Quality: Beach monitoring data was collected by the City of Dana Point from a January 2005 through January 2007. There were 105 individual samples collected with six samples exceeding the single sample water quality objective.
Data Reference: Ocean Bacteriological Data Evaluation for Dana Point HSA, City of Dana Point, November 2005 - December 2006.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Single Sample Maximum: Fecal coliform density shall not exceed 400 per 100 ml;

Geomean: Fecal coliform density shall not exceed 200 per 100ml (SWRCB, 2005).
Objective/Criterion Reference: Water Quality Control Plan Ocean Waters of California. California Ocean Plan 2005. Sacramento, CA: State Water Resources Control Board, California Environmental Protection Agency
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: Samples were taken at a sampling station located north of the Salt Creek outlet at the surfzone of Monarch Beach (station id OSL25). Lat/Long: 33.48172/-117.72595.
Temporal Representation: Samples were collected weekly from January 2005 through January 2007.
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 Bacteria specific
 
 
DECISION ID
49736
Region 9     
Pacific Ocean Shoreline, Dana Point HSA, at Salt Creek outlet at Monarch Beach
 
Pollutant: Arsenic
Final Listing Decision: Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision: New Decision
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 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.

One line of evidence is available in the administrative record to assess this pollutant. Zero of the Seven samples exceed the Water Quality Criteria for Arsenic.

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 Seven samples exceeded the Water Quality Criteria for Arsenic and this sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is fully supported using table 3.1.
4. 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. 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.
 
 
Line of Evidence (LOE) for Decision ID 49736, Arsenic
Region 9     
Pacific Ocean Shoreline, Dana Point HSA, at Salt Creek outlet at Monarch Beach
 
LOE ID: 74513
 
Pollutant: Arsenic
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Dissolved
 
Beneficial Use: Marine Habitat
 
Number of Samples: 7
Number of Exceedances: 0
 
Data and Information Type: Fixed station physical/chemical (conventional plus toxic pollutants)
Data Used to Assess Water Quality: None of the seven samples exceeded the water quality objective.
Data Reference: Data for Various Waterbodies in Region 8 and Region 9, 2006-2009.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: California's Ocean Plan Table B lists 6-month median concentration of 8 ug/L to protect aquatic life in marine waters.
Objective/Criterion Reference: California Ocean Plan Water Quality Control Plan Ocean Waters of California 2009
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: Samples were collected from SCM-1 and SCM-1d located on the Pacific Coast-Monarch Beach, at the mouth of Salt Creek.
Temporal Representation: Samples were collected from SCM-1 on 9/7/2006, 12/27/2006, 10/11/2007, and 1/24/2008. Samples were collected from SCM-1d on 10/11/2007, 5/14/2008, 10/1/2008, 12/15/2008, and 4/28/2008.
Environmental Conditions: Samples were collected from stormwater runoff on 12/15/2008, 1/24/2008, and 12/27/2006, the remainder were dry weather samples.
QAPP Information: Samples were collected and analyzed in accordance with the signed and certified, Quality Assurance Management Plan for the Orange County Stormwater Program.
QAPP Information Reference(s):
 
 
DECISION ID
49738
Region 9     
Pacific Ocean Shoreline, Dana Point HSA, at Salt Creek outlet at Monarch Beach
 
Pollutant: Cadmium
Final Listing Decision: Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision: New Decision
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 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.

One line of evidence is available in the administrative record to assess this pollutant. Zero of the Nine samples exceed the Water Quality Criteria Cadmium.

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 Nine samples exceeded the Water Quality Criteria Cadmium and this sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is fully supported using table 3.1.
4. 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. 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.
 
 
Line of Evidence (LOE) for Decision ID 49738, Cadmium
Region 9     
Pacific Ocean Shoreline, Dana Point HSA, at Salt Creek outlet at Monarch Beach
 
LOE ID: 74514
 
Pollutant: Cadmium
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Dissolved
 
Beneficial Use: Marine Habitat
 
Number of Samples: 9
Number of Exceedances: 1
 
Data and Information Type: Fixed station physical/chemical (conventional plus toxic pollutants)
Data Used to Assess Water Quality: One of the nine samples exceeded the water quality objective.
Data Reference: Data for Various Waterbodies in Region 8 and Region 9, 2006-2009.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: California's Ocean Plan Table B lists 6-month median concentration of 1 ug/L to protect aquatic life in marine waters.
Objective/Criterion Reference: California Ocean Plan Water Quality Control Plan Ocean Waters of California 2009
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: Samples were collected from SCM-1 and SCM-1d located on the Pacific Coast-Monarch Beach, at the mouth of Salt Creek.
Temporal Representation: Samples were collected from SCM-1 on 9/7/2006, 12/27/2006, 10/11/2007, and 1/24/2008. Samples were collected from SCM-1d on 10/11/2007, 5/14/2008, 10/1/2008, 12/15/2008, and 4/28/2008.
Environmental Conditions: Samples were collected from stormwater runoff on 12/15/2008, 1/24/2008, and 12/27/2006, the remainder were dry weather samples.
QAPP Information: Samples were collected and analyzed in accordance with the signed and certified, Quality Assurance Management Plan for the Orange County Stormwater Program.
QAPP Information Reference(s):
 
 
DECISION ID
49740
Region 9     
Pacific Ocean Shoreline, Dana Point HSA, at Salt Creek outlet at Monarch Beach
 
Pollutant: Chlorpyrifos
Final Listing Decision: Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision: New Decision
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 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.

One line of evidence is available in the administrative record to assess this pollutant. Zero of the Nine samples exceed the Water Quality Criteria Chlorpyrifos.

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 Nine samples exceeded the Water Quality Criteria for Chlorpyrifos and this sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is fully supported using table 3.1.
4. 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. 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.
 
 
Line of Evidence (LOE) for Decision ID 49740, Chlorpyrifos
Region 9     
Pacific Ocean Shoreline, Dana Point HSA, at Salt Creek outlet at Monarch Beach
 
LOE ID: 74525
 
Pollutant: Chlorpyrifos
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total Dissolved
 
Beneficial Use: Marine Habitat
 
Number of Samples: 9
Number of Exceedances: 0
 
Data and Information Type: Fixed station physical/chemical (conventional plus toxic pollutants)
Data Used to Assess Water Quality: None of the nine samples exceeded the Criteria Continuous Concentration for Chlorpyrifos of 9 ng/L. The reporting limit for the non-detect sample was 10 ng/L which is greater than the evaluation guideline, therefore these data are not of sufficient resolution to determine if water quality standards are being achieved.
Data Reference: Data for Various Waterbodies in Region 8 and Region 9, 2006-2009.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Marine communities, including vertebrate, invertebrate, and plant species, shall not be degraded. (2009 CA Ocean Plan)
Objective/Criterion Reference: California Ocean Plan Water Quality Control Plan Ocean Waters of California 2009
 
Evaluation Guideline: The Criteria Continuous Concentration (four day average) for chlorpyrifos in saltwater is 9 ng/L.
Guideline Reference: Water quality criteria for diazinon and chlorpyrifos. Administrative Report 00-3. Rancho Cordova, CA: Pesticide Investigations Unit, Office of Spills and Response. CA Department of Fish and Game
 
Spatial Representation: Samples were collected at site SCM-1 and SCM-1d from Pacific Ocean Shoreline, Dana Point HSA, at Salt Creek outlet at Monarch.
Temporal Representation: Samples were collected at Pacific Ocean Shoreline, Dana Point HSA, at Salt Creek outlet at Monarch site SCM-1 in September and December of 2006; October 2007; and January of 2008. Samples from SCM-1d were collected in October 2007; May, October and December of 2008; April of 2009.
Environmental Conditions: According to the County of Orange Stormwater Program Quality Assurance Management Plan (QAMP) dated January 2010, samples were collected during the dry season and storm events.
QAPP Information: Data were submitted with the County of Orange Stormwater Program Quality Assurance Management Plan (QAMP) dated January 2010. However, data were collected prior to the development of this QAMP, therefore the quality of these data are unknown.
QAPP Information Reference(s):
 
 
DECISION ID
49742
Region 9     
Pacific Ocean Shoreline, Dana Point HSA, at Salt Creek outlet at Monarch Beach
 
Pollutant: Copper
Final Listing Decision: Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision: New Decision
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 3.1 of the Listing Policy. Under section 3.1, one line(s) of evidence is necessary to assess listing status.

One line of evidence is available in the administrative record to assess this pollutant. One of the five samples exceed the Objective for dissolved copper in marine habitat.

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. One of the five samples exceed the Objective for dissolved copper in marine habitat and this sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is fully supported using table 3.1.
4. Pursuant to [SECTION 3.11/4.11] 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. 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.
 
 
Line of Evidence (LOE) for Decision ID 49742, Copper
Region 9     
Pacific Ocean Shoreline, Dana Point HSA, at Salt Creek outlet at Monarch Beach
 
LOE ID: 74526
 
Pollutant: Copper
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Dissolved
 
Beneficial Use: Marine Habitat
 
Number of Samples: 5
Number of Exceedances: 1
 
Data and Information Type: Fixed station physical/chemical (conventional plus toxic pollutants)
Data Used to Assess Water Quality: One of the five samples exceeded the water quality objective.
Data Reference: Data for Various Waterbodies in Region 8 and Region 9, 2006-2009.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: California's Ocean Plan Table B lists 6-month median concentration of 3 ug/L to protect aquatic life in marine waters.
Objective/Criterion Reference: California Ocean Plan Water Quality Control Plan Ocean Waters of California 2009
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: Samples were collected from SCM-1d located on the Pacific Coast-Monarch Beach, at the mouth of Salt Creek.
Temporal Representation: Samples were collected from SCM-1d on 10/11/2007, 5/14/2008, 10/1/2008, 12/15/2008, and 4/28/2009.
Environmental Conditions: Samples were collected from stormwater runoff on 12/15/2008.
QAPP Information: Samples were collected and analyzed in accordance with the signed and certified, Quality Assurance Management Plan for the Orange County Stormwater Program.
QAPP Information Reference(s):
 
 
DECISION ID
49750
Region 9     
Pacific Ocean Shoreline, Dana Point HSA, at Salt Creek outlet at Monarch Beach
 
Pollutant: Diazinon
Final Listing Decision: Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision: New Decision
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 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.

One line of evidence is available in the administrative record to assess this pollutant. Zero of the Nine samples exceed the Water Quality Criteria for Diazinon.

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 Nine samples exceeded the Water Quality Criteria for Diazinon and this sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is fully supported using table 3.1.
4. 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. 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.
 
 
Line of Evidence (LOE) for Decision ID 49750, Diazinon
Region 9     
Pacific Ocean Shoreline, Dana Point HSA, at Salt Creek outlet at Monarch Beach
 
LOE ID: 74527
 
Pollutant: Diazinon
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total Dissolved
 
Beneficial Use: Marine Habitat
 
Number of Samples: 9
Number of Exceedances: 0
 
Data and Information Type: Fixed station physical/chemical monitoring (conventional pollutants only)
Data Used to Assess Water Quality: None of nine samples exceeded the maximum concentration for Diazinon criteria of 820.0 ng/L.
Data Reference: Data for Various Waterbodies in Region 8 and Region 9, 2006-2009.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Marine communities, including vertebrate, invertebrate, and plant species, shall not be degraded. (2009 CA Ocean Plan)
Objective/Criterion Reference: California Ocean Plan Water Quality Control Plan Ocean Waters of California 2009
 
Evaluation Guideline: The Criteria Continuous Concentration for diazinon in saltwater is 820 ng/L.
Guideline Reference: Aquatic Life Ambient Water Quality Criteria for Diazinon
 
Spatial Representation: Samples were collected at site SCM-1 and SCM-1d from Pacific Ocean Shoreline, Dana Point HSA, at Salt Creek outlet at Monarch
Temporal Representation: Samples were collected at Pacific Ocean Shoreline, Dana Point HSA, at Salt Creek outlet at Monarch site SCM-1 in September and December of 2006; October 2007; and January of 2008. Samples from SCM-1d were collected in October 2007; May, October and December of 2008; April of 2009.
Environmental Conditions: According to the County of Orange Stormwater Program Quality Assurance Management Plan (QAMP) dated January 2010, samples were collected during the dry season and storm events.
QAPP Information: Data were submitted with the County of Orange Stormwater Program Quality Assurance Management Plan (QAMP) dated January 2010. However, data were collected prior to the development of this QAMP, therefore the quality of these data are unknown.
QAPP Information Reference(s):
 
 
DECISION ID
49745
Region 9     
Pacific Ocean Shoreline, Dana Point HSA, at Salt Creek outlet at Monarch Beach
 
Pollutant: Lead
Final Listing Decision: Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision: New Decision
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 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.

One line of evidence is available in the administrative record to assess this pollutant. Zero of the Nine samples exceed the Water Quality Criteria for Lead.

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 Nine samples exceeded the Water Quality Criteria for Lead and this sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is fully supported using table 3.1.
4. 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. 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.
 
 
Line of Evidence (LOE) for Decision ID 49745, Lead
Region 9     
Pacific Ocean Shoreline, Dana Point HSA, at Salt Creek outlet at Monarch Beach
 
LOE ID: 75116
 
Pollutant: Lead
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Dissolved
 
Beneficial Use: Marine Habitat
 
Number of Samples: 9
Number of Exceedances: 0
 
Data and Information Type: Fixed station physical/chemical (conventional plus toxic pollutants)
Data Used to Assess Water Quality: None of the nine samples exceeded the water quality objective.
Data Reference: Data for Various Waterbodies in Region 8 and Region 9, 2006-2009.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: California's Ocean Plan Table B lists 6-month median concentration of 2 ug/L to protect aquatic life in marine waters.
Objective/Criterion Reference: California Ocean Plan Water Quality Control Plan Ocean Waters of California 2009
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: Samples were collected from SCM-1 and SCM-1d located on the Pacific Coast-Monarch Beach, at the mouth of Salt Creek.
Temporal Representation: Samples were collected from SCM-1 on 9/7/2006, 12/27/2006, 10/11/2007, and 1/24/2008. Samples were collected from SCM-1d on 10/11/2007, 5/14/2008, 10/1/2008, 12/15/2008, and 4/28/2008.
Environmental Conditions: Samples were collected from stormwater runoff on 12/15/2008, 1/24/2008, and 12/27/2006, the remainder were dry weather samples.
QAPP Information: Samples were collected and analyzed in accordance with the signed and certified, Quality Assurance Management Plan for the Orange County Stormwater Program.
QAPP Information Reference(s):
 
 
DECISION ID
49749
Region 9     
Pacific Ocean Shoreline, Dana Point HSA, at Salt Creek outlet at Monarch Beach
 
Pollutant: Malathion
Final Listing Decision: Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision: New Decision
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 3.1 of the Listing Policy. Under section 3.1, one line(s) of evidence are necessary to assess listing status.

One line of evidence is available in the administrative record to assess this pollutant. Zero of five samples exceed the water quality objective for malathion for the protection of marine aquatic life.

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 five samples exceed the water quality objective for malathion for the protection of marine aquatic life and this sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is fully supported using table 3.1.
4. Pursuant to [SECTION 3.11/4.11] 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. 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.
 
 
Line of Evidence (LOE) for Decision ID 49749, Malathion
Region 9     
Pacific Ocean Shoreline, Dana Point HSA, at Salt Creek outlet at Monarch Beach
 
LOE ID: 75133
 
Pollutant: Malathion
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total Dissolved
 
Beneficial Use: Marine Habitat
 
Number of Samples: 5
Number of Exceedances: 0
 
Data and Information Type: Fixed station physical/chemical monitoring (conventional pollutants only)
Data Used to Assess Water Quality: Zero of five samples tested for Malathion exceeded the maximum concentration for Malathion of 100 ng/L .
Data Reference: Data for Various Waterbodies in Region 8 and Region 9, 2006-2009.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Marine communities, including vertebrate, invertebrate, and plant species, shall not be degraded. (2009 CA Ocean Plan)
Objective/Criterion Reference: California Ocean Plan Water Quality Control Plan Ocean Waters of California 2009
 
Evaluation Guideline: The maximum (Instantaneous) concentration for Malathion in saltwater is 100 ng/L.
Guideline Reference: Quality Criteria for Water. USEPA Office of Water and Hazardous Materials. Washington, D.C
 
Spatial Representation: Samples were collected at site SCM-1 and SCM-1d from Pacific Ocean Shoreline, Dana Point HSA, at Salt Creek outlet at Monarch.
Temporal Representation: Samples were collected at Pacific Ocean Shoreline, Dana Point HSA, at Salt Creek outlet at site SCM-1d in October 2007; May, October and December of 2008; April of 2009.
Environmental Conditions: According to the County of Orange Stormwater Program Quality Assurance Management Plan (QAMP) dated January 2010, samples were collected during the dry season and storm events.
QAPP Information: Data were submitted with the County of Orange Stormwater Program Quality Assurance Management Plan (QAMP) dated January 2010. However, data were collected prior to the development of this QAMP, therefore the quality of these data are unknown.
QAPP Information Reference(s):
 
 
DECISION ID
49753
Region 9     
Pacific Ocean Shoreline, Dana Point HSA, at Salt Creek outlet at Monarch Beach
 
Pollutant: Nickel
Final Listing Decision: Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision: New Decision
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 3.1 of the Listing Policy. Under section 3.1, one line(s) of evidence are necessary to assess listing status.

One lines of evidence are available in the administrative record to assess this pollutant. Zero of five samples exceed the water quality objective for Nickel for the protection of Marine habitat beneficial use.

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 five samples exceed the water quality objective for Nickel for the protection of Marine habitat beneficial use and this sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is fully supported using table 3.1.
4. Pursuant to [SECTION 3.11/4.11] 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 49753, Nickel
Region 9     
Pacific Ocean Shoreline, Dana Point HSA, at Salt Creek outlet at Monarch Beach
 
LOE ID: 75135
 
Pollutant: Nickel
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Dissolved
 
Beneficial Use: Marine Habitat
 
Number of Samples: 5
Number of Exceedances: 0
 
Data and Information Type: Fixed station physical/chemical (conventional plus toxic pollutants)
Data Used to Assess Water Quality: Water Board staff assessed Orange County Stormwater Program data for Pacific Ocean Shoreline, Dana Point HSA, at Salt Creek outlet at Monarch Beach to determine beneficial use support and results are as follows: 0 of 5 samples exceed the criterion for Nickel.
Data Reference: Data for Various Waterbodies in Region 8 and Region 9, 2006-2009.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: California's Ocean Plan Table B lists 6-month median concentration of 5 ug/L to protect aquatic life in marine waters.
Objective/Criterion Reference: California Ocean Plan Water Quality Control Plan Ocean Waters of California 2009
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: Samples were collected from SCM-1d located on the Pacific Coast-Monarch Beach, at the mouth of Salt Creek.
Temporal Representation: Samples were collected from SCM-1d on 10/11/07, 5/14/08, 10/1/08, 12/15/08 and 4/28/09.
Environmental Conditions: Samples were collected from stormwater runoff on 12/15/2008, the remainder were dry weather samples.
QAPP Information: Samples were collected and analyzed in accordance with the signed and certified, Quality Assurance Management Plan for the Orange County Stormwater Program.
QAPP Information Reference(s): Quality Assurance Project Plan for the Orange County Stormwater Program.
 
 
DECISION ID
49755
Region 9     
Pacific Ocean Shoreline, Dana Point HSA, at Salt Creek outlet at Monarch Beach
 
Pollutant: Nitrogen, ammonia (Total Ammonia)
Final Listing Decision: Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision: New Decision
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 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.

One line of evidence is available in the administrative record to assess this pollutant. Zero of the Nine samples exceed the Water Quality Objective for Nitrogen, ammonia (Total Ammonia).

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 Nine samples exceeded the Water Quality Objective for Nitrogen, ammonia (Total Ammonia) and this sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is fully supported using table 3.1.
4. 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. 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.
 
 
Line of Evidence (LOE) for Decision ID 49755, Nitrogen, ammonia (Total Ammonia)
Region 9     
Pacific Ocean Shoreline, Dana Point HSA, at Salt Creek outlet at Monarch Beach
 
LOE ID: 75136
 
Pollutant: Nitrogen, ammonia (Total Ammonia)
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Marine Habitat
 
Number of Samples: 9
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: None of nine sample medians exceeded the water quality objective for total ammonia. Each samples was calculated a median using the sample and all other samples taken previously within a 180-day period.
Data Reference: Data for Various Waterbodies in Region 8 and Region 9, 2006-2009.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in human, plant, animal, or aquatic life. The Ocean Plan objective for total ammonia as nitrogen is a moving 6-month median of 600 ug/L.
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: Samples were collected at station SCM1.
Temporal Representation: Samples were collected from September 2006 to April 2009.
Environmental Conditions:
QAPP Information: A signed QAPP was included with the stated goal of ensuring the consistent collection of accurate water quality information that will used to satisfy the objectives of the Orange County Stormwater Program.
QAPP Information Reference(s):
 
 
DECISION ID
49756
Region 9     
Pacific Ocean Shoreline, Dana Point HSA, at Salt Creek outlet at Monarch Beach
 
Pollutant: Selenium
Final Listing Decision: Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision: New Decision
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 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.

One line of evidence is available in the administrative record to assess this pollutant. Zero of the Seven samples exceed the Water Quality Objective for Selenium.

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 Seven samples exceeded the Water Quality Objective for Selenium and this sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is fully supported using table 3.1.
4. 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. 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.
 
 
Line of Evidence (LOE) for Decision ID 49756, Selenium
Region 9     
Pacific Ocean Shoreline, Dana Point HSA, at Salt Creek outlet at Monarch Beach
 
LOE ID: 75137
 
Pollutant: Selenium
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Dissolved
 
Beneficial Use: Marine Habitat
 
Number of Samples: 7
Number of Exceedances: 0
 
Data and Information Type: Fixed station physical/chemical (conventional plus toxic pollutants)
Data Used to Assess Water Quality: Water Board staff assessed Orange County Stormwater Program data for Pacific Ocean Shoreline, Dana Point HSA, at Salt Creek outlet at Monarch Beach to determine beneficial use support and results are as follows: 0 of 7 samples exceed the criterion for Selenium.
Data Reference: Data for Various Waterbodies in Region 8 and Region 9, 2006-2009.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: California's Ocean Plan Table B lists 6-month median concentration of 15 ug/L to protect aquatic life in marine waters.
Objective/Criterion Reference: California Ocean Plan Water Quality Control Plan Ocean Waters of California 2009
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: Samples were collected from SCM-1 and SCM-1d located on the Pacific Coast-Monarch Beach, at the mouth of Salt Creek.
Temporal Representation: Samples were collected from SCM-1 on 9/7/2006, 12/27/2006, 10/11/2007, and 1/24/2008. Samples were collected from SCM-1d on 10/11/2007, 5/14/2008, 10/1/2008, 12/15/2008, and 4/28/2008.
Environmental Conditions: Samples were collected from stormwater runoff on 12/15/2008, 1/24/2008, and 12/27/2006, the remainder were dry weather samples.
QAPP Information: Samples were collected and analyzed in accordance with the signed and certified, Quality Assurance Management Plan for the Orange County Stormwater Program.
QAPP Information Reference(s): Quality Assurance Project Plan for the Orange County Stormwater Program.
 
 
DECISION ID
49757
Region 9     
Pacific Ocean Shoreline, Dana Point HSA, at Salt Creek outlet at Monarch Beach
 
Pollutant: Silver
Final Listing Decision: Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision: New Decision
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 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.

One line of evidence is available in the administrative record to assess this pollutant. Zero of the Nine samples exceed the Water Quality Criteria for Silver.

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 Nine samples exceeded the Water Quality Criteria for Silver and this sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is fully supported using table 3.1.
4. 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. 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.
 
 
Line of Evidence (LOE) for Decision ID 49757, Silver
Region 9     
Pacific Ocean Shoreline, Dana Point HSA, at Salt Creek outlet at Monarch Beach
 
LOE ID: 75152
 
Pollutant: Silver
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Dissolved
 
Beneficial Use: Marine Habitat
 
Number of Samples: 9
Number of Exceedances: 0
 
Data and Information Type: Fixed station physical/chemical (conventional plus toxic pollutants)
Data Used to Assess Water Quality: None of the nine samples exceeded the water quality objective.
Data Reference: Data for Various Waterbodies in Region 8 and Region 9, 2006-2009.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: California's Ocean Plan Table B lists 6-month median concentration of 0.7 ug/L to protect aquatic life in marine waters.
Objective/Criterion Reference: California Ocean Plan Water Quality Control Plan Ocean Waters of California 2009
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: Samples were collected from SCM-1 and SCM-1d located on the Pacific Coast-Monarch Beach, at the mouth of Salt Creek.
Temporal Representation: Samples were collected from SCM-1 on 9/7/2006, 12/27/2006, 10/11/2007, and 1/24/2008. Samples were collected from SCM-1d on 10/11/2007, 5/14/2008, 10/1/2008, 12/15/2008, and 4/28/2008.
Environmental Conditions: Samples were collected from stormwater runoff on 12/15/2008, 1/24/2008, and 12/27/2006, the remainder were dry weather samples.
QAPP Information: Samples were collected and analyzed in accordance with the signed and certified, Quality Assurance Management Plan for the Orange County Stormwater Program.
QAPP Information Reference(s):
 
 
DECISION ID
49760
Region 9     
Pacific Ocean Shoreline, Dana Point HSA, at Salt Creek outlet at Monarch Beach
 
Pollutant: Zinc
Final Listing Decision: Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision: New Decision
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 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.

One line of evidence is available in the administrative record to assess this pollutant. Zero of the Nine samples exceed the Water Quality Criteria for Zinc.

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 Nine samples exceeded the Water Quality Criteria for Zinc and this sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is fully supported using table 3.1.
4. 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. 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.
 
 
Line of Evidence (LOE) for Decision ID 49760, Zinc
Region 9     
Pacific Ocean Shoreline, Dana Point HSA, at Salt Creek outlet at Monarch Beach
 
LOE ID: 74794
 
Pollutant: Zinc
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Dissolved
 
Beneficial Use: Marine Habitat
 
Number of Samples: 9
Number of Exceedances: 0
 
Data and Information Type: Fixed station physical/chemical (conventional plus toxic pollutants)
Data Used to Assess Water Quality: None of the nine samples exceeded the water quality objective.
Data Reference: Data for Various Waterbodies in Region 8 and Region 9, 2006-2009.
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: California's Ocean Plan Table B lists 6-month median concentration of 20 ug/L to protect aquatic life in marine waters.
Objective/Criterion Reference: California Ocean Plan Water Quality Control Plan Ocean Waters of California 2009
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: Samples were collected from SCM-1 and SCM-1d located on the Pacific Coast-Monarch Beach, at the mouth of Salt Creek.
Temporal Representation: Samples were collected from SCM-1 on 9/7/2006, 12/27/2006, 10/11/2007, and 1/24/2008. Samples were collected from SCM-1d on 10/11/2007, 5/14/2008, 10/1/2008, 12/15/2008, and 4/28/2008.
Environmental Conditions: Samples were collected from stormwater runoff on 12/15/2008, 1/24/2008, and 12/27/2006, the remainder were dry weather samples.
QAPP Information: Samples were collected and analyzed in accordance with the signed and certified, Quality Assurance Management Plan for the Orange County Stormwater Program.
QAPP Information Reference(s):