170 likes | 285 Views
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
E N D
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 - Shawnee Crk – Cu, Pb & Zn
TMDL Allocations • WLA: Pt Sources – Initially Zero • LA: Variable by Location & Flow Condition • MOS: Statistical Characteristics of Metals and Hardness
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
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
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