30 TAC Chapter 307 Texas Surface Water Quality

2000 Standards EPA Decisions • Disapproved – Sam Rayburn – DO – Selenium WER

2000 Standards EPA Approved • Appendix D • Appendix C – segment boundaries •

2000 standards Under EPA Review • Freshwater aquatic toxic criteria • 307. 4 General

Next Standards • Management approval to begin rule process • Working internally, team and

Workgroups • Today – Nutrient criteria for reservoirs – Toxic criteria • Next group

What we are working on • • • Whole-effluent toxicity (WET) Sole Source Drinking

• • Appendix D - ~95 streams Appendix E – 15 water bodies

Timeline • Draft timeline – Management approval – 1 st stakeholder meeting – Final

Slides: 9

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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 Bacteria criteria for Red River Appendix B

2000 Standards EPA Approved • 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 p. H changes E. coli & Enterococcus

2000 standards Under 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

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

Workgroups • Today – Nutrient criteria for reservoirs – Toxic criteria • Next group – Bacteria – 307. 9 – Determination of Standards Attainment

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

• • 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

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