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30 tac chapter 307 texas surface water quality standards workgroup meeting n.
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30 TAC Chapter 307 Texas Surface Water Quality Standards Workgroup meeting PowerPoint Presentation
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30 TAC Chapter 307 Texas Surface Water Quality Standards Workgroup meeting

30 TAC Chapter 307 Texas Surface Water Quality Standards Workgroup meeting

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30 TAC Chapter 307 Texas Surface Water Quality Standards Workgroup meeting

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Presentation Transcript

  1. 30 TAC Chapter 307Texas Surface Water Quality StandardsWorkgroup meeting March 7, 2007

  2. 2000 Standards EPA Decisions • Disapproved • Sam Rayburn – DO • Selenium WER • Dixon Creek • Caney Creek, Linville Bayou • No Action • Surface waters in the state • Fecal coliform for effluent limits • Bacteria criteria for Red River • Appendix B

  3. Appendix D Appendix C segment boundaries App E Cu, Zn, Al WERs Saltwater Aq criteria – Table 1 Human Health criteria – Table 3 307.6 toxic materials 307.3 definitions Implement WERs in permits once EPA approves Nueces River Tidal DO Appendix A New segments Aquifer protection Dissolved minerals pH changes E. coli & Enterococcus 2000 StandardsEPA Approved

  4. 2000 standardsUnder EPA Review • Freshwater aquatic toxic criteria • 307.4 General Criteria – text • 307.7 Table 5 – app to Classified waters • Wetland functions & seagrass use • 307.8 – Application of Standards • 307.9 – Determination of Standards Attainment • 307.10 – temp in Comal River

  5. Next Standards • Management approval to begin rule process • Working internally, team and agency • e-comments • List server

  6. Workgroups • Today • Nutrient criteria for reservoirs • Toxic criteria • Next group • Bacteria • 307.9 – Determination of Standards Attainment

  7. What we are working on • Whole-effluent toxicity (WET) • Sole Source Drinking Water • Definitions • Seagrass use • Segment boundaries – ex. Caddo • Site-specific changes on segments • Salado Creek • Caney Creek • Clear Fork Trinity River • West Fork Trinity River • Little Wichita • Black Bayou • Dixon Creek • Slaughter Creek

  8. Appendix D - ~95 streams • Appendix E – 15 water bodies – WER • EPA recommendation – chlorine removal • Bacteria • Evaluate existing recreational standards & assessment procedures • Broader range of uses

  9. Timeline • Draft timeline • Management approval Dec 2006 • 1st stakeholder meeting Mar 2007 • Final rule to rule team Jan 2008 • Proposed Agenda Mar 2008 • Adoption by Commission Sept 2008