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Kansas Spring River Metal TMDLs

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

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Kansas Spring River Metal TMDLs

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  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

  3. Current Metal WQS

  4. Hydrology is Major Factor

  5. Hydrology and Loadings

  6. Hydrology and Hardness

  7. Aquatic Life Impairment

  8. Higher Flows, Higher Exceedances

  9. High Flows Impact Clean Sites

  10. High Flows ~ Impact of Sediments

  11. Some Sites Degraded at All Flows

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

  13. Variable Load Reductions

  14. 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

  15. 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

  16. 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

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