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Major Topics

Learn about Total Maximum Daily Load (TMDL) basics, its components, benefits, major objections, and the difference between TMDL and MS4 Permit. Find out how TMDL acts as an action plan to restore water quality and beneficial uses.

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Major Topics

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Presentation Transcript

  1. Major Topics • Good News • TMDL Basics • TMDL vs MS4 Permit • Major Objections • Staff Recommendation

  2. Interested PartiesSupport the TMDL

  3. TMDL is an “Action Plan” - Attain Water Quality Objectives - Restore Beneficial Uses

  4. Components of a TMDL • Problem Statement • Numeric Target • Source Analysis • Load Capacity or TMDL • Allocation • Linkage Analysis • Margin of Safety • Seasonal Variation / Critical Conditions

  5. TMDL vs MS4 Permit MS4 Permit TMDL

  6. Major Objections • 303(d) listed for toxicity (not diazinon) • Requires immediate compliance with numeric limits • TMDL is not needed because of USEPA’s phase-out

  7. Major Objections (cont.) • TMDL is redundant with MS4 permit • Monitoring Program is too expensive • Source Analysis is too expensive

  8. Adopt ResolutionNo. R9-2002-0123

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