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, <br /> ��.�� BOt_TON & NA N K , I N ® <br /> 0f )Z Consulting Engineers & Surveyors <br /> ml / 2638 Shadow Lane,Suite 200•Chaska,MN 55318-1172 <br /> Phone(952)448-8838•Fax(952)448-8805 <br /> www.bolton-menk.com <br /> November 23,2015 <br /> City of Orono <br /> Attn: Mike Gaffron <br /> 2750 Kelley Parkway <br /> Orono,MN 55356 <br /> RE: Subdivision Application 15-3770 <br /> Orchard Farms <br /> Engineering Review#3 <br /> Dear Mike: <br /> As requested,we have completed an engineering review of the revised documents submitted for the above <br /> referenced project. We offer the following additional comments for your consideration: <br /> General <br /> 1. Drainage and Utility Easements should be revised as necessary to cover all sewer required to convey <br /> stormwater runoff. It appears that additional easements are necessary for the culvert on the northwest <br /> side of Lot 1,the culvert on the west side of Outlot B, and the culvert on the east side of Outlot B. <br /> 2. Perimeter erosion control measures should be installed by the Contractor and inspected by the City prior <br /> to any work. Contractor must provide minimum 24 hour notice prior to inspection. <br /> 3. The applicant may be required to obtain Minnehaha Creek Watershed District(MCWD) approval and <br /> permitting for their Erosion Control,Wetland Protection,Waterbody Crossings&Structures,and <br /> Stormwater Management Rules. A copy of any approvals or permits required should be submitted prior <br /> to final approval. <br /> 4. The applicant may be required to obtain a General Construction Permit(NPDES)to discharge <br /> stormwater associated with construction activity if more than 1 acre is disturbed. A copy of the permit <br /> should be submitted prior to any land disturbing activity. <br /> 5. The applicant will be required to submit a Maintenance Agreement for all stormwater management <br /> structures and facilities. The agreement should define maintenance responsibilities following completion <br /> of project,specify types and frequencies of inspection and maintenance activities, and designate who will <br /> conduct inspection and maintenance activities. <br /> Please let me know if you have any questions or need additional information. <br /> Sincerely, <br /> BOLTON&MENK,INC. <br /> 3BCd l! <br /> g le i <br /> Robert E.Bean,Jr.,P.E. <br /> Water Resources Engineer <br />