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?335 Highway 36 W <br /> St.Paul,MN 55313 <br /> Tel 651-636-4600 <br /> Fax 651-636-1311 <br /> www.bonestroo.com <br /> September 30, 2011 %�'Bonestroo <br /> Melanie Curtis <br /> Planning and Zoning Coordinator <br /> City of Orono <br /> Post Office Box 66 <br /> Crystal Bay, MN 55323 <br /> Re: 4415 North Shore Drive <br /> File No. 000139-11000-2 <br /> File No. 201Q-01195 <br /> Dear Melanie: <br /> We have reviewed the as-built plans for 4415 North Shore Drive. The plan is dated 9-8-11. We <br /> have the following comments with regards to engineering matters: <br /> • The approved grading plan dated 1-i1-11 was not followed and we have concerns <br /> regarding additional drainage being directed to 4423 North Shore Drive to the west. <br /> • Additional information such as spot elevations and drainage calcutations may show the 1- <br /> 11-11 pianned drainage patterns are still being achieved. Drainage calculations should <br /> show that there would be no increase in the amount of runoff crossing the west lot line. <br /> • If additional spot elevations and calculations show increased runoff to the adjacent <br /> properly,we would recommend a new grading plan be submitted showing how this issue <br /> is addressed. <br /> • We have attached our review letter dated 1-10-11 expressing the above concerns on <br /> prior plan submittals. <br /> • Retaining walls constructed within five feet of lot lines must be relocated or removed. <br /> If you have any questions, please call me at(651) 604-4894 or send an email to <br /> darren.amundsenCa�bonestr�.com. <br /> Sincerely, <br /> BONESTROO <br /> � � � • � <br /> Darren Amundsen <br /> Cc: Chris Mattson <br />