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m <br />1/1 Bonestroo <br />Rosene <br />Anderlik& <br />|\ \ Associates <br />Engineers & Architects <br />May 23.2000 <br />Bonestroo. Rosene. Anderfik Jind Associefet. Inc. Is an Affiffr».tiive A'llon/Equal Opportunity <br />Employer and Employee Owned <br />Principals: Otto G Bonestroo PE • M.irvm L Sorval.i PE • Gic*'n R Cook PE • <br />Robcr: G •'c lunicht. PE • Jerry A Bourdon, PE <br />Senior Consultants: Robert W Rosene. PE • Joseph C Andcriik. P£ • Rich.ird £ Turner. PE • <br />Susan M Eberim. C PA <br />D <br />Associate Principals: Howard A Sanford, PE • Keith A Gordon PE • Robert R Pfefferie. PE • <br />Richard W Foster. PE • David O Loskota PE • Robert C Russek AlA • Mark A Hanson. PE • <br />Michaei T Rautmann. PE • Ted K.Firid PE • Kenneth P Anderson. P£ • Mark R Rolfs. PF • <br />David A Bonestroo. MB A • Sidney P Williamson. PE. L S • Agnes M Ring MB A • Allan Rick Schmidt PE <br />Offices: St Paul. St Cloud. Rochester and Wiilmar VN • Milwaukee. Wl <br />>MebSite; wwwbonesiroo com <br />Wendy Bottenberg <br />Assistant Zoning Administrator <br />City of Orono <br />Post Office Box 66 <br />Crystal Bay. MN 55323 <br />Re: Rascher Retaining Wall <br />File No. 139-98-000 <br />(^1 /.p. ^ <br />Dear Wendy: <br />We visited the site at 4705 North Shore Drive on Friday, May 19 to review the existing site conditions and <br />meet with the property owners and their contractor. Based on our observations, our comments dated May 9. <br />2000 still apply. One additional solution we discussed is to replace the existing walls. We feel that replacing <br />the existing walls is acceptable provided the new walls are of the same dimensions and in the same locations as <br />the existing walls. This will serve to minimize grading activity and disturbance to the existing steep slope. Silt <br />fence should be installed prior to any construction/restoration activity to minimize sediments from w;ishing into <br />the lake. Any disturbed areas should be revegetated immediately following construction to stabilize the slope <br />and minimize erosion. It may be necessary to use fiber blankets on any steeper disturbed slopes to protect the <br />newly seeded areas until the vegetation has been established. <br />wr <br />Please contact me.at (651) 604-4863 if you have any questions regarding this matter. <br />Yours very truly, <br />BONESTROO, ROSENE. ANDERLIK & ASSOCIATES. INC, <br />Tom Kellogg i <br />Cc: Greg Gappa. City of Orono <br />2335 West Highway 36 • St. Paul, MN 55113 • 651-636-4600 • Fax; 651-636-1311