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2335 Highway 36 W <br /> St.Paul,MN 55113 <br /> Tel 651-636-4600 <br /> Fax 651-636-1311 <br /> www.bonestroo.com <br /> March 20, Zoo� �Bonestroo <br /> Ms. Melanie Curtis <br /> Planner <br /> City of Orono <br /> Post Office Box 66 <br /> Crystal Bay, MN 55323 <br /> Re: 3135 Casco Circle <br /> File No. 000139-07000-1 <br /> Plat No. 07-3270 <br /> Dear Melanie: <br /> We have reviewed the revised survey for the property at 3135 Casco Circle, dated 3/7/07.We have the <br /> following comments with regards to engineering matters: <br /> • The proposed grading to the west of the house will direct runoff onto the property to the west. <br /> The grading should be revised such that all runoff is contained on the subject property. <br /> • The proposed slopes in the vicinity of the boulder retaining wall at the northwest corner of the <br /> house, antl to the west of the proposed garage exceetl 3:1. The grading should be revised in these <br /> areas such that all slopes are less than 3:1. <br /> • It appears that the proposed grading will result in 1-2'of fill on the north side of the retaining wall <br /> to the east of the proposetl garage. The plan should intlicate if any modifications are to be matle <br /> to the existing retaining wall height. <br /> • It appears a proposed 966 contour is missing near the retaining walls to the west of the proposed <br /> garage. <br /> • Final plans should inclutle erosion and sediment control details. <br /> If you have any questions, please call me at(651) 604-4894. <br /> Yours very truly, <br /> BONESTR00 <br /> �� , � <br /> Darren Amuntlsen <br /> Cc: Tom Kellogg <br />