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ENCLOSURE (1) <br /> � � BWC #009-9502 <br /> June 23, 1995 <br /> Rev. June 26, 1995 <br /> Page 2 of 4 <br /> PROJECT REQUIREMENTS <br /> (Continued) <br /> C. PROJECT PLAN: <br /> 1. PRODUCT - REFERENCE DOCUMENTS <br /> ACTIVITIES: <br /> 1 .1 Attend kickoff ineeting and collect available data. <br /> 1 .2 Review data and mapping. ` <br /> 2. PRODUCT - HEC-2 FLOOD PROFILE ANALYSIS <br /> ACTIVITIES: <br /> 2.1 Review available cross sections of Lake Decatur and <br /> Sangamon River. <br /> 2.2 Develop method for modeling proposed dams. <br /> 2.3 Obtain and review existing watershed storm water runoff <br /> calculations. <br /> 2.4 Sketch upstream and downstream cross sections. I� <br /> 2.5 Determine starting water surface profile elevation. <br /> 2.6 Compute water service profiles for existing and proposed <br /> conditions for 10, 50, and 100 year events. <br /> 2.7 On existing aerial contour mapping, identify properties <br /> and land owners impacted by the 10, 50, and 100 year flood <br /> profile analysis. <br /> 2.8 Check, back check, and correct �iEC-2 analysis. <br /> 3. PRODUCT - ENVIRONMENTAL ANALYSIS <br /> ACTIVITIES: <br /> 3. 1 Assess aquatic vegetation and terrestrial impacts. <br /> 3.2 Assess fisheries, waterfowl and wildlife impacts. <br /> 3.3 Assess water quality impacts on Sangamon River; turbidity <br /> (NTU) and nitrate-nitrogen. <br /> 3.4 Assess sedimentation trap and silt storage impacts. <br />