Water Body Name: | Dan Blocker Memorial (Coral) Beach |
Water Body ID: | CAX4043100019990922145850 |
Water Body Type: | Coastal & Bay Shoreline |
DECISION ID |
32474 |
Region 4 |
Dan Blocker Memorial (Coral) Beach |
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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: | List on 303(d) list (being addressed by USEPA approved TMDL)(2012) |
Revision Status | Revised |
Sources: | Source Unknown |
TMDL Name: | Santa Monica Bay Beach Closures/Coliform/Bacteria Indicators (48) |
TMDL Project Code: | 392 |
Date TMDL Approved by USEPA: | 01/01/2002 |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for removal from the CWA section 303(d) List under section 4.3 of the Listing Policy. Under section 4.3 a single line of evidence is necessary to assess listing status.
8 lines of evidence are available in the administrative record to assess this pollutant. 0 of 0 sample exceeded the OBJECTIVE. 85 of 570 samples exceeded the OBJECTIVE. 156 of 521 samples exceeded the OBJECTIVE. 7 of 359 samples exceeded the OBJECTIVE. 0 of 330 samples exceeded the OBJECTIVE. 219 of 570 samples exceeded the OBJECTIVE. 11 of 570 samples exceeded the OBJECTIVE. 32 of 521 samples exceeded the OBJECTIVE. 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. 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. 0 of 0, 85 of 570, 156 of 521, 7 of 359, 0 of 330, 219 of 570, 11 of 570, and 32 of 521 samples exceeded the OBJECTIVE and this exceeds the allowable frequency listed in Table 4.2 of the Listing Policy. 4. Pursuant to section 4.11 of the Listing Policy, no additional data and information are available indicating that standards are 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. |
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LOE ID: | 83924 | ||||
Pollutant: | Fecal Coliform | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Water Contact Recreation | ||||
Number of Samples: | 359 | ||||
Number of Exceedances: | 7 | ||||
Data and Information Type: | PATHOGEN MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed BW data for Dan Blocker Memorial (Coral) Beach to determine beneficial use support and results are as follows: 7 of 359 samples exceed the criterion for Coliform, Fecal. | ||||
Data Reference: | Data for Region 4 Beach Watch. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | California Ocean Plan (SWRCB 2009) single sample maximum states that fecal coliform density shall not exceed 400 per 100ml | ||||
Objective/Criterion Reference: | California Ocean Plan Water Quality Control Plan Ocean Waters of California 2009 | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for Dan Blocker Memorial (Coral) Beach was collected at 2 monitoring sites [ Latigo Shore Dr., Puerco Beach] | ||||
Temporal Representation: | Data was collected over the time period 1/16/2007-8/23/2010. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The samples were collected for the Beach Watch program. | ||||
QAPP Information Reference(s): | |||||
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LOE ID: | 83923 | ||||
Pollutant: | Enterococcus | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Water Contact Recreation | ||||
Number of Samples: | 521 | ||||
Number of Exceedances: | 156 | ||||
Data and Information Type: | Not Specified | ||||
Data Used to Assess Water Quality: | One hundred and fifty-six of the 521 geomeans exceeded the entercoccus objective. | ||||
Data Reference: | Data for Region 4 Beach Watch. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The geometric mean standard for enterococcus 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 from Puerco Beach andLatigo Shore Dr. | ||||
Temporal Representation: | Samples were collected approximately once a week from 2005 to 2010. | ||||
Environmental Conditions: | |||||
QAPP Information: | The samples were collected for the Beach Watch program. | ||||
QAPP Information Reference(s): | |||||
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LOE ID: | 83922 | ||||
Pollutant: | Enterococcus | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Water Contact Recreation | ||||
Number of Samples: | 570 | ||||
Number of Exceedances: | 85 | ||||
Data and Information Type: | PATHOGEN MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed BW data for Dan Blocker Memorial (Coral) Beach to determine beneficial use support and results are as follows: 85 of 570 samples exceed the criterion for Enterococci. | ||||
Data Reference: | Data for Region 4 Beach Watch. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | California Ocean Plan (SWRCB 2009) single sample maximum states that enterococcus density shall not exceed 104 per 100 mL. | ||||
Objective/Criterion Reference: | California Ocean Plan Water Quality Control Plan Ocean Waters of California 2009 | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for Dan Blocker Memorial (Coral) Beach was collected at 2 monitoring sites [ Latigo Shore Dr., Puerco Beach] | ||||
Temporal Representation: | Data was collected over the time period 1/3/2005-8/23/2010. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The samples were collected for the Beach Watch program. | ||||
QAPP Information Reference(s): | |||||
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LOE ID: | 83927 | ||||
Pollutant: | Total Coliform | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Water Contact Recreation | ||||
Number of Samples: | 570 | ||||
Number of Exceedances: | 11 | ||||
Data and Information Type: | PATHOGEN MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed BW data for Dan Blocker Memorial (Coral) Beach to determine beneficial use support and results are as follows: 11 of 570 samples exceed the criterion for Coliform, Total. | ||||
Data Reference: | Data for Region 4 Beach Watch. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | California Ocean Plan (2009) single sample maximum states that total coliform density shall not exceed 10,000 per 100 mL | ||||
Objective/Criterion Reference: | California Ocean Plan Water Quality Control Plan Ocean Waters of California 2009 | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for Dan Blocker Memorial (Coral) Beach was collected at 2 monitoring sites [ Latigo Shore Dr., Puerco Beach] | ||||
Temporal Representation: | Data was collected over the time period 1/3/2005-8/23/2010. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The samples were collected for the Beach Watch program. | ||||
QAPP Information Reference(s): | |||||
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LOE ID: | 3547 | ||||
Pollutant: | Coliform Bacteria | ||||
LOE Subgroup: | Subgroup Missing | ||||
Matrix: | Not Specified | ||||
Fraction: | None | ||||
Beneficial Use: | Water Contact Recreation | ||||
Number of Samples: | 0 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | Not Specified | ||||
Data Used to Assess Water Quality: | A TMDL and implementation plan has been approved for this water segment-pollutant combination. The Santa Monica Bay Bacteria Dry Weather TMDL was approved by RWQCB on January 24, 2002 and subsequently approved by USEPA. The Santa Monica Bay Bacteria Wet Weather TMDL was approved by RWQCB on December 12, 2002 and approved by USEPA on June 19, 2003. | ||||
Data Reference: | Placeholder reference 2006 303(d) | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | |||||
Objective/Criterion Reference: | |||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | |||||
Temporal Representation: | |||||
Environmental Conditions: | |||||
QAPP Information: | QA Info Missing | ||||
QAPP Information Reference(s): | |||||
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LOE ID: | 83928 | ||||
Pollutant: | Total Coliform | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Water Contact Recreation | ||||
Number of Samples: | 521 | ||||
Number of Exceedances: | 32 | ||||
Data and Information Type: | Not Specified | ||||
Data Used to Assess Water Quality: | Thirty-two of the 521 geomeans exceeded the total coliform objective. | ||||
Data Reference: | Data for Region 4 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 from Puerco Beach and Latigo Shore Dr.. | ||||
Temporal Representation: | Samples were collected approximately once a week from 2005 to 2010. | ||||
Environmental Conditions: | |||||
QAPP Information: | The samples were collected for the Beach Watch program. | ||||
QAPP Information Reference(s): | |||||
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LOE ID: | 83926 | ||||
Pollutant: | Total Coliform | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Shellfish Harvesting | ||||
Number of Samples: | 570 | ||||
Number of Exceedances: | 219 | ||||
Data and Information Type: | PATHOGEN MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed bw data for Dan Blocker Memorial (Coral) Beach to determine beneficial use support and results are as follows: 219 of 570 samples exceed the criterion for Coliform, Total. | ||||
Data Reference: | Data for Region 4 Beach Watch. | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The California Ocean Plan (2009) states the following: At all areas where shellfish may be harvested for human consumption, the following bacterial objectives shall be maintained throughout the water column: Ten percent of the samples collected during any 30-day period shall not exceed 230 MPN/100mL. | ||||
Objective/Criterion Reference: | California Ocean Plan Water Quality Control Plan Ocean Waters of California 2009 | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for Dan Blocker Memorial (Coral) Beach was collected at 2 monitoring sites [ Latigo Shore Dr., Puerco Beach] | ||||
Temporal Representation: | Data was collected over the time period 1/3/2005-8/23/2010. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The samples were collected for the Beach Watch program. | ||||
QAPP Information Reference(s): | |||||
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LOE ID: | 83925 | ||||
Pollutant: | Fecal Coliform | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Water Contact Recreation | ||||
Number of Samples: | 330 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | Not Specified | ||||
Data Used to Assess Water Quality: | Zero of the 330 geomeans exceeded the fecal coliform objective. | ||||
Data Reference: | Data for Region 4 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 from Latigo Shore Dr. and Puerco Beach. | ||||
Temporal Representation: | Samples were collected approximately once a week from 2007 to 2010. | ||||
Environmental Conditions: | |||||
QAPP Information: | The samples were collected for the Beach Watch program. | ||||
QAPP Information Reference(s): | |||||