12-13-2004 Council Packet - Laserfiche WebLink

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! - m Bonestroo Rosene Anderiik & Associates 2335 West Highwriy 36 • St. Paul. MN 55113 Office 651-636-4600 • Fa>;: 651-636-1311 WWW bonestroo com engineers & Architects Sep. September 28, 2004 Ms. Melanie Curtis Planner City of Orono Post Office Box 66 Crystal Bay, MN 55323 Rc:1220Tonkawa File No. 139-04-000 Plat No. 04-3060 Dear Melanie: We have reviewed the sketch plan for the proposed grading and shoreline improvements to the property located at 1220 Tonkawa. The proposed improvements include the construction of retaining walls and associated site improvements along the lake side of the home. We have the following comments with regards to engineering matters: • The proposed sketch docs not provide sufficient detail for us to comment on. A detailed plan should be submitted that includes existing and proposed contours extending 50-fect beyond all lot lines. 1 he plans should accurately show topography including all lot lines, existing trees, buildings, retaining walls and any other structures and hardcover. • The plans should include at least three sections showing existing and proposed elevations between the lake and the home across the frontage of the property. • Additional retaining wall information should be provided with the revised plans. At a minimum the proposed wall type should be identified as well as the proposed top and bottom of wall elevations. The plans should clearly identify existing and proposed walls. Any walls that exceed 4-fect in height require a separate engineered design and detail submittal. • The plans sho. Id include erosion and sediment control details and detailed planting and restoration infonr.-.i;ion. If you have any questions please call me at (651) 604-4S63. Yours very truly. UONl-S IROO, ROSKNE, ANDERl.IK & ASSOCIATES, INC. Tom Kellogg Cc: Greg Gappa, City of Orono St. Paul. St Cloud. Rochester. Willmar, MN • Milwaukee. Wi • Chicago. IL Afnim41tvf Ailion,^i(|M4ii Opponunify Fmpfoyvr Fmployr* Owned liyuaindk^