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A 1 eK A Anoka Conservation District <br />1318 McKay Drive NE, Suite 300 <br />jONSERVAIIONTpHam Lake, Minnesota 55304 <br />IS1111111 Ph: 763-434-2030 Fx: 763-434-2094 <br />www.AnokaSWCD.org <br />CITIES OF ANOKA AND RAMSEY <br />STORMWATER RETROFIT ANALYSIS <br />Target Waterbody: Rum River <br />The purpose of this project is identify and rank projects that will improve stormwater quality <br />discharged to the Rum and Mississippi Rivers. The final report will detail potential projects, <br />costs, pollutant reductions, and an overall cost effectiveness ranking of all projects. It will <br />provide information sufficient to prioritize expenditures and apply for project installation <br />grants. <br />TASKS <br />STORMWATER RETROFIT ANALYSIS PROCESS* <br />STEP AND PURPOSE <br />KEY TASKS <br />• <br />Overview of process <br />TAC Meeting 1 <br />• <br />Define core retrofitting objectives <br />Kickoff and scoping <br />• <br />Identify preferred retrofit treatment options <br />• <br />Establish focus area <br />Desktop Analysis <br />• <br />Delineate subwatershed focus area <br />Search for potential retrofit <br />• <br />Secure GIS and other mapping <br />sites throughout the <br />• <br />Conduct desktop search for potential retrofit sites <br />subwatershed <br />• <br />Prepare base maps for reconnaissance <br />TAC Meeting 2 <br />• <br />Present drainage area delineations and potential retrofits <br />Desktop review <br />identified as part of the desktop analysis <br />Subwatershed Reconnaissance <br />• <br />Verify drainage areas and mapping data <br />Investigate retrofit sites in the <br />• <br />Assess site constraints <br />field <br />• <br />Search for additional retrofit opportunities <br />Treatment Analysis/Cost <br />• <br />Develop project concepts <br />Estimates <br />• <br />Utilize a water quality computer model for determining pollution <br />Create project concepts and <br />and volume reduction (WinSLAMM) <br />model for treatment potential <br />• <br />Develop project cost estimates <br />Evaluation and Ranking <br />• <br />Conduct cost/removal analysis for project concepts <br />Compare projects throughout <br />• <br />Rank projects by cost-effectiveness <br />the subwatershed <br />• <br />Compare results to restoration objectives <br />TAC Meeting 3 <br />Review of Complete Draft <br />• <br />Review of the draft report <br />Presentation <br />• <br />Presentation of final report <br />*Process modified from The Center for Watershed Protection's Urban Stormwater Retrofit <br />Practices Manuals (2005 and 2007) <br />