| Water Body Name: | Hermosa Beach |
| Water Body ID: | CAX4051200019990922160827 |
| Water Body Type: | Coastal & Bay Shoreline |
DECISION ID |
4080 |
Region 4 |
Hermosa Beach |
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| Pollutant: | Indicator Bacteria |
| Final Listing Decision: | List on 303(d) list (being addressed by USEPA approved TMDL) |
| Last Listing Cycle's Final Listing Decision: | List on 303(d) list (being addressed by USEPA approved TMDL)(2006) |
| Revision Status | Original |
| Sources: | Nonpoint Source |
| TMDL Name: | Santa Monica Bay Beach Closures/Coliform/Bacteria Indicators (48) |
| TMDL Project Code: | 392 |
| Date TMDL Approved by USEPA: | 06/19/2003 |
| Impairment from Pollutant or Pollution: | Pollutant |
| Regional Board Conclusion: | This pollutant is being considered for listing under section 2.2 of the Listing Policy. Under this section of the Policy, a minimum of one line of evidence is needed to assess listing status.
Based on the readily available information, the weight of evidence indicates that there is sufficient justification in favor of placing this water segment-pollutant combination in the Water Quality Limited Segments Being Addressed portion of the 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. The AB 411 exceedance frequency was exceeded 6 out of the 6 years. However, a TMDL is in place to address this pollutant in this water body. he 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. 4. Pursuant to section 4.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
| Regional Board Decision Recommendation: | The decision has not changed. |
| 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. |
| USEPA Action (if applicable): | |
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| LOE ID: | 3603 | ||||
| Pollutant: | Indicator Bacteria | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | Total | ||||
| Beneficial Use: | Water Contact Recreation | ||||
| Number of Samples: | 6 | ||||
| Number of Exceedances: | 6 | ||||
| Data and Information Type: | PATHOGEN MONITORING | ||||
| Data Used to Assess Water Quality: | Public health monitoring data collected by two local agencies from 2000-2005 and compliance monitoring for the Santa Monica Bay Beaches Bacteria TMDL collected from November 2004 to September 2005. The AB 411 exceedance frequency was exceeded 6 out of the 6 years (Heal the Bay, 2006). | ||||
| Data Reference: | Placeholder reference 2006 303(d) | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | Site-specific AB 411 Exceedance Frequency (April- October) per Santa Monica Bay Beaches Bacteria TMDL. | ||||
| Objective/Criterion Reference: | Placeholder reference 2006 303(d) | ||||
| Evaluation Guideline: | |||||
| Guideline Reference: | |||||
| Spatial Representation: | Hermosa City Beach at 26th Street and Hermosa Beach Pier 50 yards south. | ||||
| Temporal Representation: | Samples collected between 2000 and 2005. | ||||
| Environmental Conditions: | |||||
| QAPP Information: | Data were collected by Los Angeles County Sanitation Department and Los Angeles County Department of Health Services. | ||||
| QAPP Information Reference(s): | |||||