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04: 0~ <br /> <br />Schoell & Madson, Inc. <br /> <br />Enginem"'ing ~' Suture/lng · Planning <br />Sail T~l:ing ~ Environmental ,$ervi~ea <br />www. 6choellmad~on. c~rn <br /> <br />P. 02 <br /> <br />April 12, 2001 <br /> <br />Mr. Terry Maurer <br />Howard R. Green Company <br />1326 Energy Park Drive <br />St. Paul, MN 55108 <br /> <br />Subject: Windsor Oak Hill <br /> <br />Dear Mr. Maurer: <br /> <br /> Enid i~ the existing topography for/he Iow area behind future Lot 5, Block 1, of the <br />W'mdaor Oak Hill plat. <br /> <br /> The topography indicates a land-locked Iow area which is, for the most part, on the <br />adjoining property to the west. The bottom of the Iow ama as shown is 930.6. The topography <br />indicatel the overflow from this Iow area is 934.7. This wouM mean the water would need to <br />rise four feet to go over the owrtlow. Approximately six ac,-~,~ presently drain to this ama. <br />Since the area does not have an outlet to the east lower than the 934.7 overflow, the Iow area <br />most likely ponds slxing runoff until the fro~t has left the ground. This is a pre-existing <br />condition. <br /> <br />The water elevation on April 11, 2001 was 931.8. <br /> <br /> The proposed area of the Windsor Oak Hlii draining to lower ama will be less than what <br />is presently draining there, The proposed storm sewm' outlet between ~ 5 and 6 will be at <br />932.0. This outlet will provide an overflow 2.7 feet below the existing conditions. <br /> <br />Sincerely, <br /> <br />$CHOELL & MAD$ON, INC. <br /> <br />Doug Stahl, P.E. <br /> <br />DAWcj <br /> <br />cc: Ron Bastyr <br /> <br /> <br />