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L <br />1/1 Bonestroo <br />Rosene <br />Anderlik& <br />|\ \ Associates <br />Engineers & Architects <br />May 23.2000 <br />Bonestroo. Rosene. Anderlik end Assocteces. Inc. it an Affirmative Action/Equal Opportunity <br />Employer and Employee Owned <br />Principals: Otto G Bonestroo. PE • Mvirvm L Sorvala. PE • Gie'“n 7 Cock. PE • <br />Rooert G. Schument. PE. • Jerry A. Bourdon. PE <br />D <br />Senior Consultants: Robert W Rosene. PE • Joseph C. Andcriik. PE • Ricnaro E. Turner, P£ • <br />Susan M. Eberlm. C PA. <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. AI A. • .Var< A Hanson. PE • <br />Michael T. Rautmann. PE. • Ted K Field. PE. • Kenneth P Anderson. PE. • Mark R. Rolfs. Pc. • <br />David A Bonestroo. MBA* Sidney P Williamson. PE. L S • Agnes M Ring. .MBA • Allan Rick Sc**midt. PE <br />Offices: St. Paul. St. Cloud. Rochester and WiUmar. MM • Milwaukee. Wl <br />\Mrbslte: www bonestroo 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 />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 washing 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 />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 <br />Cc: Greg Gappa, City of Orono <br />2335 West Highway 36 • St. Paul. MN 55113 • 65l*636-4600 > Fax; 651*636-1311