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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. March 7, 2007. 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

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30 TAC Chapter 307 Texas Surface Water Quality Standards Workgroup meeting

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  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

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