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c <br />COFFIN & GRONBERG, INC. <br />•unvrriNO. KNOiNKimNO and land plannino <br />4«a.A TAMAMACK AVINUK <br />LONO LAKE. MINN. SSSB* <br />473-4141 <br />November 3, 1998 <br />Brent Bentrott <br />1453 Park Drive <br />Orono, MN 55364 <br />Dear Brent: <br />Because of the steep slopes from Park Drive down to your house, this is a difficult site to fit in a <br />proposed driveway. The existing gravel driveway on Bluff Street right-of-way is at a 23% grade <br />which is too steep to use for a driveway. <br />Your previous October 7, 1998 plan by Larson Associates has the right idea but the elevation at <br />the entrance to Park Drive is actually 2 feet higher which would cause problems with sideslopes, <br />tree removal, visual appearance and amount of fill needed. <br />The enclosed plan moves the entrance to Park Drive to the west and cuts along your property at <br />an angle in order to stay off the steep sideslope. This eliminates grading and tree removal in this <br />steep area, gives you a flat landing area at the entrance to Park Drive and gives you more length <br />to get down the hill at a reasonable (10%) grade and give a flat area (2%) by the proposed <br />garage. <br />These proposed grades work well with this property and adjoining properties and require about <br />500 cubic yards of fill which is much less than would be needed under the October 7ih plan using <br />actual grades. <br />Sincerely, <br />COFFIN & GRONBERG, INC. <br />Mark S. Gronberg, P.E. & L.S. <br />MSG/cr