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��'� B�L_�""�t\! 8� ii�'1 �'t�i 1-�" , � �`•��:, <br /> �r <br /> ��� ,M �t�!���r�;'i�� Engine�-rs & Surv+�ycars <br /> �� . PC Exhibit E <br /> � 2638 Shadow Lane,Sufte 200•Chaska, MN 5531&1172 <br /> Pt�one(952)448-8838•Fax(952)448-8805 <br /> www.bolton-men k.cc�m <br /> Apri111,2016 <br /> City of Orono <br /> Attn: Mike Gaffron <br /> 2750 Kelley Parkway <br /> Orono,Ml� 55356 <br /> RE: Pteliminary Plat Application 16-3$22 <br /> Eisinger Meadows <br /> Engineering Review#1 <br /> Deax Mike: <br /> As requested, we have completed an engineering review of the documents submitted for the above <br /> referenced project. We offer the following observations,comments, and recommendations for your <br /> consideration: <br /> 1.0 GENERAL: <br /> 1.1 Stormwater managetzaent for the proposed site meets City requirements. Proposed peak runoff <br /> rates will be restricted to less than existing peak runoff rates. However,if the pmposed design is <br /> significantly revised during the Final Plat approval process,a Final Stormwater Management Pian <br /> should be submitted with the Final Construction Plans. Also, additional detail will be required <br /> with the Fina1 Plans to ensure system is constructed as designed. <br /> 1.2 Stora�,sewer calculations should be submitted for review to verify adequate sizing. <br /> 1.3 The Conservaxion Design Master Plan(CDMP}should be revised to include more complete <br /> recommendations and direction to address the following topics: <br /> a. Invasive Species—The CDMP should be revised to include a complete Vegetation <br /> Management Plan. The plan should inclade a list of all invasive plant species encountered(i.e. <br /> bucl�hom, gazlic mustard,reed canary grass,creeping charlie,canada thistle,etc.)and <br /> recammended procedures and schedule for eradication of listed species. <br /> b. Protection of Si 'ficant Tree Stan.ds—The CDMP should be revised to include discussions on <br /> the location,quality,and value of existing significant tree stands,re�ommendations for areas <br /> to be preserved,and justification and mitigation of impacts of any such stands to be impacted <br /> by development activities. The Vegetation Management Plan should depict proposed Tree <br /> Preservation areas and trees designated for remvval to allow fvr review of potential <br /> conservation easements. <br /> c. Protection of Weflands—The Vegetation Management Plan shou.ld include procedures, <br /> schedule, and seed mixes for protecting and establishing buffers around wetlands. <br /> 1.4 Due to the size of proposed disturbance,a Topsoil Management Plan should be included with the <br /> Final Plans to ensure adequate topsoiI pIacement. The plan should provide direction for topsoil <br /> stripping, stockpile location{s),soil de-compaction prior to re-spread,certification of topsoil for re- <br /> spread meeting specifications, and placement o£topsoil. This information could be included on <br /> the Final Grading Plan. <br /> 1.5 The applicant will be required to obtain Minnehaha Creek Watershed District{MCWD)approvaI <br /> and permitting for their Erosion Control,Wetland Protection,and Waterbody Crossings and <br /> 5tructures Rules. A copy of any approvals ar permits required should be submitted prior to Final <br />