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r na^ 12 2004 16:08 BONESTROO ROSENE RNDERLIK 6516361311 P-2 <br />^ J Bonestroo <br />Anderilk & <br />^\j f Associates <br />Enginscrs fc Architect: <br />233S West Highway 36 • St. Paul. MN 55113 <br />Ofnee: 651-636-4600 • Fax: 651-636-1311 <br />www.bonestroo.com <br />May 12. 2004 <br />Mr. Mike Oaffiroii <br />Planner Director <br />City of Orono <br />Post Office Box 66 <br />Crystal Bay, MN 55323 <br />Re:740 North Arm Drive <br />File No. 139-04-000 <br />Plat No. 04-3002 <br />Dear Mike: <br />"We have reviewed the plans for the proposed shoreline improvements at 740 North Ann Dnve. The proposed <br />improvements include removing an existing boathouse and constructing a series of boulder retaining walls to <br />siabiUre the shoreline embankment. We have the following comments with regards to engineering maaers; <br />The plans should include proposed erosion controls. All silt fence should be the heavy duty type with <br />steel t-posts. <br />The planting schedule should identify the heists of the full grown plants. All proposed plantings shall <br />be at least 4-feet in height to screen the retaining walls. Without adequate screening the walls will <br />appear to be 18-feet tall from the lake. <br />All erosion control measures should be inspected and approved by the city prior to any work cn site. <br />The erosion control should be rr.aiatained and remain in place until the vegetation is established and <br />the slopes are stabilised. <br />If you have any questions please call me at (651) 604-4863. <br />Yours very truly, <br />BONESTROO. ROSENE. A>IDERLIK Sc ASSOCIATES. INC, <br />/cr^ <br />Tom Kellogg <br />Cc: Greg Gappa, City of Orono <br />• St. Paul, St. Cloud, Rochester, VVillmar. MN • M'lwaukee, Wl • Chicago, iL