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Bonestroo <br />Rosene <br />Anderlik & <br />Associates <br />Engineers & Architects <br />September 17, 1992 <br />G Bc>r'r trevj PE <br />W Rosene P£ ' <br />Jc'eo^ C Andert.k pf <br />Vjrvtn L Scr\«»»a P£ <br />P£ <br />Oern R Coc»i PE <br />Thcrrjs E Noyei PE <br />RoCen G Schu<'<ht PE <br />Suwn M Ete^ n. C P'*> <br />•5e''iO# Consu^^ni <br />A GcrtX'^ PE <br />Rcter ft P^efp^e PE <br />R<h^rd W Poster P£ <br />CjvJ O Lc ‘«i. r-* ^E <br />Rcter: C Russe^t. A i ^ <br />Jerry A BourtX>n PE <br />Mark A Hanson PE <br />7 RjuI.T’arn P <br />>J K ^ PE <br />Thomas R AnOervon A <br />Donay C Bur5a*a- PE <br />Thcrnas E Ani^uk P£ <br />Ga’, f *>e <br />ismae^ Vjr: <>e- Pc <br />Wchaei P pju P£ <br />A^es NS R'-; ^ iC P <br />Tr'-j'nas 'X ^••'VOn PE <br />Mc^'ae? C Lr'cn PE <br />James R NSaano PE <br />Jerry O PpriTVh PE <br />‘Ce ’^r^fth P Anoerson PE <br />Vjfh R Pc^ ®E <br />Mark A Sea P£ <br />Gar, \Jl' V-cren PE <br />Oar'd J £j^e-cn PE <br />P^ p J Cv»i.*.e. PE <br />M.r« D Aa-.s PE <br />V es8 Jenser pe <br />L Ph^zp G'avd ff» PE <br />Aar^n L X r'T^n PE <br />f Toaa Foster p£ <br />Aetn R Yapp PE <br />Srawn D Gustafson l <br />Cec» o O <vie^ PE <br />Chares A E'H.fcvcn <br />Leo M Pa.\duy <br />Marian M O-'son <br />Jarres F Enge'harm <br />Mr. Mike Gaffron <br />City of Orono <br />P.O. Box 66 <br />Crystal Bay, MN 55323 <br />Re: #1763 Woodhill Country Club <br />File No. 139-1763 <br />Dear Mike: <br />We have reviewed the topographic detail plan submitted with the conditional use permit <br />application for land alterations at the Woodhill Country Club. The two engineering issues <br />to be noted are the proposed steep slopes and erosion control to protect a DNR protected <br />water, identified as Basin No. 27-852P. Tlie protected water is located at the downstream <br />end of an existing 36" CMPA culvert. <br />Tlie side slopes of the proposed safety berms are shown at 2.5 to 1 (horizontal to vertical). <br />Tliese slopes will be difficult to maintain and will be prone to e.xcessive erosion until the <br />proposed sodding has had an adequate time to establish a strong root base. Tliis may not <br />be established until well into the spring season. Tlie entire grading area covers <br />approximately 3 acres and an erosion control plan should be submitted for our review. <br />Specifically, silt fence should be installed along the southwestern perimeter of the grading <br />area that has direct runoff to the protected water. This perimeter is several hundred feet <br />in length. <br />Existing utility lines should be shown from the catch basin and manholes. <br />Please contact me at this office if you have any questions. <br />Yours very truly <br />BONESTROO. ROSENE. ANDERLIK & ASSOCIA'IIES. INC. <br />U 'h u4itL)ef'l <br />Shawn D. Gustafson. P.E. <br />SDG:lk <br />2335 West Highway 36 • St. Paul. Minnesota 55113 • 6I2-636-4600