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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 /> �u�y �4, zoo9 �' 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: 2933 Casco Point Road <br /> File No. 000139-09000-2 <br /> Building Permit No. 2009-0381 <br /> Dear Melanie: <br /> We have reviewed the retaining wall plan for 2933 Casco Point Road. The plan shows <br /> the replacement of wood retaining walls with segmental concrete block walls. We have <br /> the following comments with regards to engineering matters: <br /> • It is our understanding that the existing wood retaining walls will be replaced <br /> with segmental block walls in the same approximate locations and heights. <br /> • The applicant has submitted engineered retaining wall design information that <br /> covers single block walls up to five feet and height and tiered five-foot high walls <br /> with a combined height of 10 feet. These design heights are consistent with the <br /> site. <br /> • This project will disturbs more than 10 CY of material within the shore setback <br /> zone. Sediment and erosion control information meeting the requirements of <br /> Orono's City Code 79-7(c)(1) must be submitted. The minimum $2000 sediment <br /> and erosion control financial security should be required of the applicant for this <br /> permit. <br /> If you have any questions, please call me at (651) 604-4894. <br /> Yours very truly, <br /> c�---. -;�_�-� <br /> --� <br /> Darren Amundsen <br /> Cc: Tom Kellogg <br />