| Water Body Name: | Pacific Ocean at Bolinas Beach |
| Water Body ID: | CAC2013001120070320140924 |
| Water Body Type: | Coastal & Bay Shoreline |
DECISION ID |
20351 |
Region 2 |
Pacific Ocean at Bolinas Beach |
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| Pollutant: | Indicator Bacteria |
| Final Listing Decision: | List on 303(d) list (TMDL required list) |
| Last Listing Cycle's Final Listing Decision: | List on 303(d) list (TMDL required list)(2010) |
| Revision Status | Original |
| Sources: | Source Unknown |
| Expected TMDL Completion Date: | 2019 |
| Impairment from Pollutant or Pollution: | Pollutant |
| Regional Board Conclusion: | Region 2 data was not included in the 2012 Integrated Report so all decisions are carried over from the 2010 listing cycle. |
| Regional Board Decision Recommendation: | No new data were assessed for 2012. The decision has not changed. |
| State Board Staff 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: | 351 | ||||
| Pollutant: | Indicator Bacteria | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | None | ||||
| Beneficial Use: | Water Contact Recreation | ||||
| Number of Samples: | 80 | ||||
| Number of Exceedances: | 6 | ||||
| Data and Information Type: | PATHOGEN MONITORING | ||||
| Data Used to Assess Water Quality: | Available data indicate sufficient exceedances of bacterial indicator objectives. There were 6 out of 80 samples that exceeded the single sample maximum for enterococci (USEPA, 2007). | ||||
| Data Reference: | Placeholder reference 2006 303(d) | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | Title 17 C.C.R. Section 7958 states: Based on a single sample, the density of bacteria in water from each sampling station at a public beach or public water contact sports area shall not exceed:
(A) 1,000 total coliform bacteria per 100 milliliters, if the ratio of fecal/total coliform bacteria exceeds 0.1; or (B) 10,000 total coliform bacteria per 100 milliliters; or (C) 400 fecal coliform bacteria per 100 milliliters; or (D) 104 enterococcus bacteria per 100 milliliters. Based on the mean of the logarithms of the results of at least five weekly samples during any 30-day sampling period, the density of bacteria in water from any sampling station at a public beach or public water contact sports area, shall not exceed: (A) 1,000 total coliform bacteria per 100 milliliters; or (B) 200 fecal coliform bacteria per 100 milliliters; or (C) 35 enterococcus bacteria per 100 milliliters. (DHS, 1999) |
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| Objective/Criterion Reference: | Placeholder reference 2006 303(d) | ||||
| Evaluation Guideline: | |||||
| Guideline Reference: | |||||
| Spatial Representation: | Station ID# MC150, Bolinas Beach (Wharf Rd.) | ||||
| Temporal Representation: | 04/03/2003-10/25/2005 | ||||
| Environmental Conditions: | |||||
| QAPP Information: | Data record: summers 2003-2005, Marin County Health Dept. | ||||
| QAPP Information Reference(s): | |||||