1. 30 TAC Chapter 307 Texas Surface Water Quality Standards Workgroup 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. 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
pH changes
E. coli & Enterococcus

4. 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
– 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 Next group 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 E – 15 water bodies – WER
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