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• 2 . Determ' <br /> . ine subdistrict drainage. . areas, travel times and <br /> runoff coefficients. , . <br /> 3. . Perform hydrologic/hydraulic review of existing system to <br /> determine deficient segments. <br /> Prepare Hydraulic Model (Proposed Conditions) <br /> 1 . Review deficient segments and determine feasibility. of <br /> detention ponding versus pipe reconstruction. <br /> (( 2. Prepare hydraulic model using 'proposed system improvements. <br /> 3. Make alterations to system concepts and rerun model until <br /> solutions are identified. <br /> 1 4. Review alternate solutions with Village staff. <br /> Prepare Report <br /> 1 . Prepare cost estimates for recommended improvements. <br /> 2. Prepare order of priority of improvements. <br /> 3. Write draft copy of report for Village review. <br /> 4. Revise report as necessary and prepare final report. <br /> ; P P <br /> 5. Report to include map of existing system and recommended <br /> improvements. <br /> 6. Furnish Village with mylar map, drawings, and computer <br /> printouts. <br /> i <br />' 1 <br /> The analytical portion of the study will be performed with the <br /> aid of computer software. "CE STORM" will be used to analyze <br /> existing pipe hydraulics. Detention pond design will be <br /> accomplished with the SCS-TR20 storm water routing program. <br /> i <br /> i <br />