R2012-87 AUTHORIZING AGREEMENT WITH AGRICULTURAL WATERSHED INSTITUTE

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Agreement No. 604106 6. Watershed-based TMDL Implementation Plan - The Recipient shall develop a watershed- based TMDL Implementation plan for the Big Creek watershed that is designed to improve water quality by controlling water pollution. The Plan shall include the findings of the BMP Scenarios Technical Report and Inventory developed under Items 4 and 5 of this Agreement. Developed from the completed inventory along with input from the local stakeholders and local experts, the plan shall contain a problem statement, goals and objectives. Potential management practices shall be identified to achieve water quality and pollutant load reduction objectives that will help meet downstream load reductions identified in the Sangamon River/ Lake Decatur Watershed TMDL Report. The plan shall identify the costs and funding sources associated with implementing recommendations of the plans. The plan shall include an implementation schedule; description of interim, measurable milestones; public information/education component; and a monitoring component. One (1) paper copy and one (1) electronic copy of the draft plan shall be completed and submitted by the Recipient to the Illinois EPA by December 1, 2013. The final plan shall be completed and three (3) paper copies and one (1) electronic copy submitted by the Recipient to the Illinois EPA by May 31, 2014. BIG DITCH WATERSHED-BASED TMDL IMPLEMENTATION PLAN 7. Watershed Resource Inventory - The Recipient shall compile a comprehensive watershed resource inventory (Inventory) for the Big Ditch watershed, Hydrologic Unit Codes 071300060202 and 071300060203, a tributary of Lake Decatur. The Inventory shall include the natural, human, and man-made resources in the Big Ditch watershed. The inventory shall identify current nutrient and TSS loadings and potential sources of those loadings in the Big Ditch watershed. Existing GIS data, water quality data, and other relevant information shall be compiled for inclusion in the Inventory. Data sources may include the Lake Decatur TMDL report, GIS soils data, ISWS monitoring reports, and other completed watershed plans. One (1) paper copy and one (1) electronic copy of the draft Inventory shall be completed and submitted by the Recipient to the Illinois EPA by February 15, 2013. The final Inventory shall be completed and One (1) paper copy and one (1) electronic copy shall be submitted by the Recipient to the Illinois EPA by April 1, 2013. 8. Watershed-based TMDL Implementation Plan - The Recipient shall develop a watershed- based TMDL Implementation plan for the Big Ditch watershed that is designed to improve water quality by controlling water pollution. The Plan shall include the findings of the BMP Scenarios Technical Report and Inventory developed under Items 4 and 7 of this Agreement. Developed from the completed inventory along with input from the local stakeholders and local experts, the plan shall contain a problem statement, goals and objectives. Potential management practices shall be identified to achieve water quality and pollutant load reduction objectives, that will help meet downstream load reductions identified in the Sangamon River/ Lake Decatur Watershed TMDL Report. The plan shall identify the costs and funding sources associated with implementing recommendations of the plans. The plan shall include an implementation schedule; description of interim, measurable milestones; public information/education component; and a monitoring component. One (1) paper copy and one (1) electronic copy of the draft plan shall be completed and submitted by the Recipient to the Illinois EPA by December 1, 2013. The final plan shall be completed and three (3) paper copies and one (1) electronic copy submitted by the Recipient to the Illinois EPA by May 31, 2014. page 3 of 7 1/12