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` ' 2335 Hlghway 36�. <br /> , St.Paul,MN 55113 <br /> , ' Te1651-636-4 00 <br /> Fax 651-636-1 11 <br /> � www.bonestrao.com <br /> � Bonestroo <br /> February 22, 2008 <br /> Ms. Evelyn Turner � <br /> Planner <br /> City of Orono <br /> Post Office Box 66 <br /> Crystal Bay, MN 55323 <br /> Re: 3240 Graham Hitl Road <br /> File No. 000139-08000-2 <br /> Buitding Permit A11874 <br /> Dear Evelyn: <br /> • We have reviewed the building permit survey prepared by Demars-Gabriel, Inc. dated 2-19-08 for the <br /> proposed house construction at 3240 Graham Hill Road. We have the foilowing preliminary comments with <br /> regards to engineering matters: <br /> • The overall proposed grading appears to be acceptable however the grades away from the rear <br /> yard walkout are less than 1% and should be revised to provide positive drainage away from the <br /> house. The grading plan shouid be revised to provide at least a 2% grade away from the house at <br /> all points around the perimeter to ensure drainage away from the house. <br /> • The proposed erosion control should be insta►led prior to any work on site. <br /> • The proposed driveway culvert materials and grade should be reviewed and approved by Don <br /> DeBaere with Orono Public Works prior to issuance of the building permit. <br /> If you have any questions please call me at(651) 604-4894. <br /> Yours very truly, <br /> BONESTR00 <br /> . � , � � <br /> Darren Amundsen <br /> Cc: Tom Keilogg <br />