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2335 Highway 36 W <br /> St.Paul,MN 55113 <br /> Te1651-636-4600 <br /> Fax 651-636-1311 <br /> www.bonestraa.com <br /> �U�Y zs, zoog � 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: 3285 Graham Hill Road <br /> File No. 000139-08000-2 <br /> Building Permit No. 2009-0427 <br /> Dear Melanie: <br /> We have reviewed the grading plan dated 7-22-09 and an undated landscaping plan for 3285 <br /> Graham Hill Road. The plans propose to build a single family home with an attached garage. We <br /> have the following comments with regards to engineering matters: <br /> • There appears to be a discrepancy between the grading plan and the landscaping plan <br /> regarding the design and layout of the retaining walls located at the northwest corner of <br /> the garage. <br /> • The applicant should provide evidence that minor grading will be allowed on adjacent <br /> lots to construct lot line drainage swales. <br /> • Engineered design and details should be submitted for review and approval for all <br /> retaining walls over four in height, and for all tiered walls with a separation of less than <br /> two times the wall height. <br /> • The proposed grading plan is consistent with the overall development grading plan and is <br /> acceptable from an engineering standpoint. <br /> • This project will disturb more than 100 CY of material. Sediment and erosion control <br /> information meeting the requirements of Orono's City Code 79-7(c)(2) must be <br /> submitted. The minimum $2000 sediment and erosion control financial security should <br /> be required of the applicant for this permit. <br /> If you have any questions, please call me at(651) 604-4894. <br /> Yours very truly, � � 1 ����,�r-�-; �._� <br /> t- 1��� , <br /> _— <br /> ' ,--�--� �,/ __ <br /> \/--�_,�_, i . _!"L___� �---�" <br /> Darren Amundsen <br /> ���� ��� <br /> ____.._._._ <br /> Cc: Tom Kellogg ��.�,r�r= .� I��_, , __.�S•-.°—� <br /> `.1 . `, _ � <br />