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e <br />Bonestroo, Rosene, Anderlik & Associates, Inc. <br />2335 W. Trunk Highway 36 <br />St. Paul, MN 55. 13 <br />612-636.4600 <br />September 17, 1987 <br />City of Orono <br />Box 66 <br />Crystal Bay, MN 51323 <br />Attn: Ms. Jeanne Mabusth <br />O <br />Engineers 3 Architects <br />Re: File N(. 139-1201 <br />Hillelink-Vogt Preliminary Plat <br />Dear Jeanne, <br />uuu (+ R+nnuou. P L <br />Nob", W At'—, l' L <br />/wryA ( Awd,,1A P ! <br />Nred/urd A 1—be I P ! <br />Rwhwd L /rrwrr P ! <br />/rmn C cmA ' P L <br />64Aw R C—A. P! <br />Anrh A bw+hw. PI <br />J N l�nrn. P! <br />Par 6 Sr Arww A" P! <br />' 4V -'N L Sc' _k. P ! <br />rbmV C bgerd, P L <br />.r, A &—ddn P !. <br />11✓rf A ' (emY Pt <br />/rd A /rr.d P / <br />AI,. MrI! Nwrrwrnn I'1 <br />N�•Irrr N Y/r//nG. L' f <br />1b..d0 Lr,f wr. Pi <br />1 h"m WPlmm— P L <br />Mu Arr/C i1pk A. P! <br />A urrw L M dh. P L <br />/rww, R ALurend. PI <br />A, —A P AndlY P ! <br />A -A A dp Awown P! <br />ALr.f N N'qf'. P ! <br />N.Aw,, ( N.wA. A 1 A <br />L.m I L.•.e. Y! <br />(A.'A" A l wU.n <br />L•o M P. w.:,Ar <br />II JrHn N U(+un <br />aw N L Arr/rw <br />We have rc%iewed tho Hiibelink-Vogt Preliminary Plat. The plan as submitted <br />is acceptable with provisions for controlling the site runoff. <br />The property owner should provide a 20 foot wide drainage easement over the <br />entire drainage ditch within the plat. <br />The owner should provide a 15" diameter culvert beneath the access in the <br />ditchline of Old Crystal Bay Road. A 1.5" culvert shout,+ also be provided in <br />the low area beneath the proposed roadway so that surface wate• can be Lec- <br />ted to the drainage ditch. <br />We did not complete a hydraulic analysis for the wat^rshed to determine cul- <br />vert size. We simply observed the existing cult' `s in the area. <br />Roadways should be completed in developing this plat; pr ased roadways should <br />be constructed through the Peterman Second Addition and -,e Woodhaven Addition <br />to complete the road network in the area. <br />Yours very truly, <br />60NESTROO, ROSENE, ANDF..RLIK 6 ASSOCIATES, If'C. <br />Mich�eI C. I vnc h <br />MCL: i <br />6619e <br />