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. t <br /> 2335 Highway 36 W <br /> St.Paul,MN 55113 <br /> Tel 651-636-4600 <br /> Fax 651-636-1311 <br /> www.bonesVoo.com <br /> December 5, Z007 �Bonestroo <br /> Ms. Melanie Curtis <br /> Planning and Zoning Coordinator <br /> City of Orono <br /> Post Office Box 66 <br /> Crystal Bay, MN 55323 <br /> Re; 2118 Shadywood Road � <br /> File No. 000139-07000-1 <br /> Dear Melanie: <br /> We have reviewed the concept plan for 2118 Shadywood Road received 12-3-07. The plans propose to <br /> construct a new house and driveway. We have the following comments with regards to engineering <br /> matters; <br /> • A proposed high point of 943.6 is shown to the north of the house, However, existing tree <br /> elevations along the lake are also 943.6. Therefore, it does not appear this area will drain <br /> properly, <br /> • All swale grades should be at least 2%. <br /> � • All removals, including trees and buildings, should be noted on the plans. <br /> • Detailed design information, such as proposed grading and plantings, should be provided for the <br /> infiltration trench area. <br /> • Design and details should be submitted for review for all retaining walls over 4' in height. <br /> • A small amount of grading is shown within the 0-75' setback to provide an emergency overflow <br /> for the infiltration area, This would remove approximately 10 cubic yards of material and appears <br /> acceptable. <br /> • The plans should show that the lowest opening to the house is at least 942.2 which is one foot <br /> above the EOF, <br /> If you have any questions, please call me at(651)604-4894. <br /> Yours very truly, <br /> Bonestroo <br /> � . i . <br /> Darren Amundsen <br /> Cc: Tom Kellogg <br />