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TMDLs and Implementation Plans

TMDLs and Implementation Plans. Ron Stein TMDL Team Leader Texas Commission on Environmental Quality. TMDL PROCESS. A two part process A TMDL to determine general limits for contaminant of concern An Implementation Plan for the strategy to improve water quality. TMDL.

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TMDLs and Implementation Plans

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  1. TMDLs and Implementation Plans Ron Stein TMDL Team Leader Texas Commission on Environmental Quality

  2. TMDL PROCESS • A two part process • A TMDL to determine general limits for contaminant of concern • An Implementation Plan for the strategy to improve water quality

  3. TMDL • Sets limits on loads of the contaminant of concern • Assimilative Capacity • General limits • Permitted Sources • Non-Permitted Sources • Margin of Safety

  4. TMDL • Permitted Sources • WWTP Allocation • WWTP Load Limits • Aggregate Permitted Storm Water Allocation • No Load Limits • Non-Permitted Sources • Single Allocation

  5. RECENT & CURRENT TMDLs

  6. Implementation Plan • Long term, Phased Plan • Developed by stakeholders in the watershed • Typically, a coordinating committee and work groups • Work groups typically include • WWTP operation • Storm water • Public Outreach • Others

  7. Implementation Plan • Work groups may identify requirements for • WWTP • Storm Water • BMP • Public Outreach • Others • May be added to Storm Water Management Plan • Typically, Phase II requirements are sufficient • Non-permitted storm water sources from urban areas may have similar requirements

  8. Current Implementation Plans

  9. Thank You Ron Stein TMDL Team Leader Texas Commission on Environmental Quality 512-239-4507 rstein@tceq.state.tx.us

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