1. Kansas Spring River Metal TMDLs Thomas Stiles, KDHE Watershed Planning April 14, 2005

2. 303(d) Listings 1998 – Lower Spring River, Turkey Crk, Short Crk, Brush Crk, Little Shawnee Crk – Pb, Zn, Cd, Cu 1998 – Biological Impairment on Spring River 2002 – Shoal Crk – Pb & Zn - Shawnee Crk – Cu, Pb & Zn

4. Current Metal WQS

5. Hydrology is Major Factor

6. Hydrology and Loadings

7. Hydrology and Hardness

8. Aquatic Life Impairment

9. Higher Flows, Higher Exceedances

10. High Flows Impact Clean Sites

11. High Flows ~ Impact of Sediments

12. Some Sites Degraded at All Flows

13. TMDL Allocations WLA: Pt Sources – Initially Zero LA: Variable by Location & Flow Condition MOS: Statistical Characteristics of Metals and Hardness

14. Variable Load Reductions

15. Highest Priority Issues Short Creek: Zn, Cd @ normal to high Q Turkey Creek: Zn, Cd @ normal to high Q Center Creek: Zn, Cd @ normal to high Q; Pb @ normal Q Shawnee Creek: Pb @ normal Q Shoal Creek: Zn @ very high Q Baxter Springs: Pb @ normal to high Q; Zn @ high to very high Q

16. Load Reduction Strategy 1. Tributary Reductions for Self & Baxter Springs 2. Reductions on Other Tribs – e.g.; Willow Creek 3. Removal of In-Channel Sediments 4. Potential Dredging of Empire Lake

17. TMDL Timeline Next Week: Submission to EPA 2005-2008: Ongoing Remedial Actions 2008: Reopen TMDL – NRDA data; effluent monitoring; establish WLAs 2009: Begin targeted sediment removal 2013: Revisit TMDL; note progress