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• = BO�TON 8� M �N K , I NC� <br /> . ; Consulting Engineers & Surveyors <br /> '� � 2638 Shadow Lane, Suite 200•Chaska, MN 55318-1172 <br /> Phone(952)448-8838• Fax(952)448-8805 <br /> www.bolton-menk.com <br /> ' 14 � � �� I� <br /> City of Orono <br /> Attn: Melanie Curtis <br /> 2750 Kelley Parkway <br /> Orono, MN 55356 <br /> RE: Building Permit Number 14-00463 <br /> 3825 North Shore Drive <br /> Engineering Review#1 <br /> Dear Melanie: <br /> As requested, we have completed an engineering review of the documents submitted far the above <br /> referenced project. Our current review is based on the following submittal items: <br /> • Final Construction Plans, dated 5/15/2014 <br /> • Certificate of Survey prepared by Gronberg&Associates, Inc., dated 5/7/2014 <br /> We offer the following observations, comments, and recommendations for your consideration: <br /> 1. The proposed silt fence should be extended around the perimeter of the site. The silt fence should be <br /> installed such that runoff from the site cannot directly enter the rain garden to the north. <br /> 2. The plans should provide more detail for the proposed rain gardens. Details should include, bottom <br /> elevations,emergency overflow elevations, and proposed vegetation. Drainage calculations should <br /> also be submitted to verify sizing of each basin. <br /> 3. Perimeter erosion control devices should be installed and inspected by the City prior to any land <br /> disturbing activities. <br /> 4. Disturbed areas should be permanently stabilized within 7 days of completing construction. <br /> Please let me know if you have any questions or need additional information. <br /> Sincerely, <br /> BOLTON& MENK, INC. <br /> � ��� � <br /> Brian D. Simmons, P.E. <br /> Project Engineer <br />