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' ' PC Exhibit D <br /> BOLT�N � M �NK , tNC. <br /> Consutfiing Engineers 8c Surveyors <br /> 2838 Shadow Lane,Sulte 200•Chaska,MN 55318-1772 <br /> Phone(952)448�838•Fsx{952)448-8805 <br /> www.bolton-rt�enk.com <br /> August 12,2015 <br /> C�ity of Orono <br /> Attn: Mike Gaffron <br /> 2750 Kelley Parkway <br /> Orono, MN 55355 <br /> RE: Sabdivision Application 15-3770 <br /> 46{}Orc�aard Park Road <br /> Engineening Review#1 <br /> Dear Mike: <br /> As requested,we have completed an engineering rev�iew of the documents submitted for the above <br /> referenced project. We offer the fallowing coznments for your consideration: <br /> General <br /> 1.1. A Demolition Pian.should be submitted as part oP the Fina1 Plat process. At a mizti,mum,the ptan <br /> ehould address removal of the following existing itez�as: <br /> a. Buildings <br /> b. Driveways <br /> c. Septic systems <br /> d. Wells (if wells are not to be preserved and reused,wells should be capped and sealed per State <br /> rec�uirements) <br /> e. Fences <br /> 1.2. An Erosion Control Plan should be submitted as part of the FinaI Plat process. The plan should <br /> include perimeter erosion co�qtrol measures (siltfence,biologs,rock entrance,etc.)for demolition <br /> operations and proposed construction work. Redundant erosion control mea.sures must be installed <br /> _ adjacent to wetlands where any land disturbance is proposed within 50' of the wetland. <br /> 1.3. A Vegetation Management Plazz should be submitted as part of the Final Plat procesa. The plan should <br /> include establishment of wetland buffers and re-vegetation of areas clisturbed due to demoli�ion <br /> opez�ations and shaned driveway conslructian. Buffer establishment should include procedures for <br /> removal of Kentucky Blue Grass located within proposed buffers. ' <br /> 1,4. The shared driveway in Ouflot B should be constracteti in conjunction with the platting of the property. <br /> A plan and profile should be submitted for the shared driveway as part af the Final Plat process to <br /> ensure adequate grades,alignment,profile,and driveway section are provided. <br /> 1.5. A Maintenance Agreement for the shared driveway in Outlot B should be submitted as part of the Fina1 <br /> Plat process. <br /> I.6. The propoaed driveway for Lot 1 is located in close proximity to Wetland A. Therefore,the following <br /> shauld be considered: <br /> a. According to the Wetland Delineation,Wetland A overflows through a swale on tb.e northwest <br /> corrzer of the wetland. A culvert should be installed under the driveway to provide a p�rimary outlet <br /> for the wetland that does not route r�woff over the driveway. <br /> b. The proposed driveway is located within the buffer for Wefland A. BufFer averaging may be <br /> necessary in order to provide the requiz'ed buffer. Driveway and buffer layout should be reviewed <br /> and approved by Minnehaha Creek Waters�ed Diistrict(MCV�D). <br /> c. The pmposed driveway may be located within the floodplai.n for Wedand A. Fill should be placed <br />