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Bonestroo Z335 West Highway 3G • St. Paui, MN 55113 � <br /> Rosene Office: G51-G36-4G00 • Fax: G51-G3G-1311 ���� <br /> Anderlil<& www.bonestroo.com <br /> Associ�tes <br /> Engineers&Architects <br /> Deceinber 15, 2005 <br /> Ms. Jauice Gundlach �`�'� � ,���°���, , ,,,., <br /> G`�'i K, <br /> Plaruier j i;_ �-� <br /> City of Orono �l� � 2���;- <br /> Post Offce Box 66 �''Y'�''' � J <br /> `° ` � �_;"� �„t�`:,�� a�,;.� <br /> Ciystal Bay, MN 55323 ��t�:,,�� <br /> Re: 4017 North Shore Drive <br /> File No. 000139-05000-0 <br /> Plat No. OS-3159 <br /> Dear Janice: <br /> We have reviewed the graduig plan for the proposed iinprovements at 4017 North Shore Drive.The <br /> proposed improveinents include the construction of a new home and garage along with associated <br /> site grading. We have the following comments with regards to engineering matters: <br /> � The proposed grading plan shows side yard swales that approach a 40% grade. Grades that <br /> exceed 33%(3:1)present maultenance problems and we recorrunend the slopes be reduced to <br /> a maximum of 3:1. <br /> • Final plans should uiclude swale stabilization details. At a minimum the swales should be <br /> staked with sod. <br /> • If the proposed retaining walls exceed 4-feet in height or if the horizontal separation between <br /> the walls is less than two times the wall height separate enguieered design aud details should <br /> be submitted for review and approval. <br /> • Erosion and sediment controls should be shown on the plans. These controls should be <br /> installed, inspected and approved by the city prior to any work on site and remaui lli place <br /> until all work is completed and vegetation has been established. <br /> If you have any questions please call me at (651) 604-4863. <br /> Yours very truly, <br /> BONESTROO, ROSENE, ANDERLIK & ASSOCIATES, INC. <br /> ,_---- <br /> ��7 , <br /> Tom Kellogg <br /> Cc: Greg Gappa, City of Orono <br /> St. f'aul, St. Cloud, Rochester, MN • Milwaul<ee, WI ■ Chicago, IL <br /> Afflrmative AcUon/Equai Opporwnity Employer a�d Employee Owned <br />