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<br /> <br />OUR APPROACH TO THIS PROJECT WILL <br />BE INFORMED BY OUR CONTINUED <br />WORK WITH MPCA PROGRAMS. <br /> <br />assessment. Through our discussions and meetings, we have come to <br />understand that a GIS-based approach is an acceptable method of <br />preparing a loading assessment. We therefore propose to use a GIS <br />emphasis on the Elk River Loading Assessment and forego the <br />routed water quality model. This makes sense for Elk River for two <br />reasons: <br /> <br />. It will be accepted by the MPCA <br />· Elk River does not have the existing modeling infrastructure to make <br />creating a routed model cost effective <br /> <br />In our other loading assessments we have used GIS to generate input data <br />(such as land use and drainage area) for the PondNET model. In Elk River's <br />case, we will use the GIS information to generate input data for a <br />simplified model. This is a spreadsheet that summarizes pollutant and <br />water volume loads from individual drainage areas. <br /> <br />There is little difference in how we propose using GIS over our current <br />routed PondNET modeling approach. The small difference would be <br />including certain water quality treatment levels in the GIS program, <br />depending on the stormwater design standards specific to each developed <br />area and its time of development. <br /> <br />EXPERIENCE WITH THE MPCA AND THE NPDES PERMIT <br />Our approach to this project will be informed by our continued work with <br />MPCA programs. Bonestroo staff, particularly Randy Neprash, have <br />unparalleled depth of experience and involvement in developing the <br />revised MS4 Permit and the nondegradation requirements. Through our <br />work with the LMC, we worked directly with the MPCA to draft and revise <br />much of the language in these areas. This background allows us to provide <br />Elk River with a cost-effective and defensible Loading Assessment and <br />Nondegradation Report. <br /> <br />Our project team includes Bob Barth as project manager. Bob has <br />attended several meetings with MPCA staff regarding Loading <br />Assessments and Nondegradation Reporting. Advising the project team <br />will be Randy Neprash and Rich Brasch. Randy's relationship with the <br />MPCA and involvement with Nondegradation Reporting goes back to the <br />NPDES MS4 permit's early stages. Rich Brasch has been involved in <br />preparing Nondegradation Plans for several cities and has attended <br />Coalition of Cities meetings regarding the evolving MS4 permit. <br /> <br />.tt Bonestroo <br /> <br />4 <br />