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H <br />Bonestroo, Rosene, Anderlik & Associates, Inc. <br />2335 W. Trunk Highway 36 <br />St Paul, MN 55113 <br />612636-4500 <br />Engineers & Architects <br />Otto C. Botmtroo, P E <br />Hobtfi W Huatna. P t <br />Juaey/A C Amderhk, P t. <br />Bretijord A Lembarg, F t. <br />Btchoad t. Tmrtm, P.t, <br />Jamn C Oiuwi. F t <br />L <br />August 11, 1987 <br />City of Orono <br />Box 66 <br />Crystal Bay, MN 55323 <br />Attn: Jeanne Mabusth <br />Building and Zoning Administrator <br />Re: File No. 139-1177 <br />Waters Property <br />Ctem K Ccot. r £. <br />krilh A Gof^Uitn. P.t. <br />Tkumm t \o/r», P t . <br />Mu hm/J H' / uttrf. P £ <br />Hobart G !khunHhi. F t. <br />A4«f>M L iufrwPe. P t <br />Oonekt C Betgardt, F £ <br />Jerry A Bourdon, F £■ <br />Mart A Heuaom, F t <br />lad K ktabi. F £. <br />Mm beat T Heutmann. F £. <br />Hobart H Pjrjjrrir P t <br />l)a*td O Loakviu. Pt <br />Jborma W Fatanon. P t. <br />MuhaatC lymk. P t <br />kuran L Wdlu. F £ <br />Jeanat H Mulamd. P £. <br />kamaatk F Aedanon. P £. <br />kriik A Betbtman, P t. <br />Mark H Hoijt. F E. <br />Hobart C Hux^ak. A I A. <br />Thotaas £ Angux. P t. <br />Uoti L Youag. Ft. <br />Cborlas A truixom <br />lav M Pu mrbk r <br />HufUtn M Ohon <br />Susan M. tbarlm <br />Dear Jeanne: <br />We have reviewed the information submitted by Mr. Greg Kopischke of the <br />Westwood Planning and Engineering Company. Mr. Kopischke is requesting a var­ <br />iance for excavation within the 0-75' setback area for the Todd Waters/Dori <br />Molitor Residence at 3061 Casco Point Road. <br />The newly excavated drainage swale on the north side of the property will <br />provide positive storm water drainage to the lake, benefiting both the Water <br />property and the Dennis property to the North. Prior to the construction of <br />the swale, water ponded behind both properties and was drained to the lake <br />through catch basins and eight inch diameter clay storm sewer pipes. The <br />storm sewer pipes are inadequately sized to convey storm sewer flows at the <br />rate runoff reaches the properties, and ponding of water results. The posi­ <br />tive surface water drainage through the swale will provide overflow protection <br />to the Dennis Home which does not currently exist. The positive surface water <br />drainage provided by the swale is a more desirable solution for storm water <br />drainage than is storm sewer piping. <br />The owner proposes to flatten out the natural slope of the property by use <br />of retaining walls. Flattened slopes will result in less runoff as the water <br />will percolate into the soils. Flattened slopes will also result in a reduced <br />runoff water velocity, which will result in less erosion. <br />Page 1. <br />57l4u