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TMDL Plan for Pathogens in Richardson Bay: Implementation and Monitoring

Learn about Total Maximum Daily Load plan for water quality improvement, addressing sources of impairment like stormwater runoff, sanitary sewer line failures, houseboats, and vessels in the Richardson Bay area.

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TMDL Plan for Pathogens in Richardson Bay: Implementation and Monitoring

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  1. TMDL Project for Pathogens in Richardson Bay North Bay Watershed Association Meeting November 7, 2007 Farhad Ghodrati Naomi Feger

  2. What is a TMDL Plan? Total Maximum Daily Load plan is a water quality improvement plan that: • Identifies sources of impairment • Sets desired water quality targets • Prescribes corrective actions

  3. Why Develop a TMDL Plan? Clean Water ActRequires all Regional Water Boards to: • Identify impaired water bodies • Develop TMDL Plans for each impaired waterbody

  4. The Problem • Richardson Bay does not meet water quality standards for: - water contact recreation - shellfish harvesting • TMDL Required

  5. Localized Impairment Due to Pathogens

  6. Pathogen Source Categories of Concern • Sanitary sewer line failures • Stormwater runoff • Houseboats(floating homes) • Vessels(recreational, live-aboard, anchor-out boats) • (Wildlife) Photo of a substandard houseboat sewage system

  7. Solving the Problem—Overview Implementation Plan: • Continue and improve upon existing actions • Rely on existing regulatory programs and waste discharge prohibitions • Establish monitoring and adaptive management program

  8. Actions to Reduce Contributions from Stormwater Runoff • Comply with stormwater management plans • Update plans as needed to include specific measures to reduce pet and human waste Photo of storm drain inlet discharging to the Bay

  9. Actions to Address Sanitary Sewer Line Failures • Comply with Board’s Sanitary Sewer overflow program • Comply with USEPA Enforcement Orders to Sanitary Districts

  10. Actions to Reduce Contributions from Houseboats and Vessels • Comply with vessel waste discharge prohibition • Local authorities evaluate adequacy and integrity of waste handling systems • Owners make necessary improvements to ensure no waste is discharged into the Bay

  11. Implementation / Monitoring Evaluating Progress Through Monitoring and Adaptive Implementation • Water quality monitoring plan to track progress and prioritize implementation • Adaptive implementation: Take action now and continue to gather information Gather Data / Review Targets Met?

  12. Next Steps • State Water Board approval • Office of Administrative Law approval • USEPA approval

  13. Recent USEPA Orders for Sewage Collection Agencies • Issued on April 10, 2008, to ten different agencies • Require Sewage Spill Reduction Action Plan (SSRAP): • Elimination of collection system spills • Spill response, recordkeeping, notification & reporting • Collection system maintenance and management • Collection system assessments • Capacity assurance • Infrastructure renewal • Implementation study and report • Quarterly spill reports and annual progress reports • Subject to review and approval by EPA

  14. Mill Valley Tiburon Belvedere Unincorporated County Sausalito

  15. Southern Marin Sewer Agencies •

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