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<br />. <br /> <br /> <br />Howard R. Green Company <br />CONSULTING ENGINEERS <br /> <br />November 18, 1999 <br />File: 808540J-0240 <br /> <br />Mr. Steve Wensman <br />City of Elk River <br />13065 Orono Parkway <br />Elk River, MN 55330 <br /> <br />RE: WINDSOR PARK DEVELOPMENT <br /> <br />Dear Mr. Wensman: <br /> <br />As requested we have reviewed the submittal package for the Windsor Park Development. The <br />package consisted of a preliminary plat, preliminary grading plan, preliminary road grades, <br />preliminary landscape plan with tree preservation limits, preliminary sewer collection disposal <br />plan, storm drainage calculations and on-site sewer treatment preliminary evaluation. Based on <br />our review we would offer the following comments: <br /> <br />. A. Preliminary Plat <br /> <br />1. The side yard easement between Lots 5 and 6, Block 4 should be increased to 20 feet to <br />accommodate the storm sewer pipe that is proposed in this location. <br />2. There are a number of areas where the grading plan indicates that natural drainage will <br />flow across lots not within the prescribed drainage and utility easements. In these <br />locations additional easements need to be provided on the plat to accommodate this <br />drainage. Examples of this would be the rear yard of the lots within Block 2 and Block 4 <br />of the plat. There is also drainage through areas not covered by easements and Lots 3 <br />and 4 and Lot 7 of Block 1. <br /> <br />B. Preliminary Gradina and Drainaae Plan <br /> <br />1. There are a few house elevations that would indicate rather flat driveways, these should <br />be reviewed. They include Lots 3 and 8, Block 1, Lot 3, Block 4, also Lot 3 Block 2 and <br />Lot 2, Block 4 have relatively flat areas behind the homes. <br />2. It is difficult to see how drainage will be contained within side yard easements in Block 3 <br />where minimal is proposed. <br />3. There is approximately 600 feet of street drainage that flows to County Road 1 at the <br />intersection of 212th Avenue and County Road 1. There is a culvert under the road with <br />spill ways proposed. It would provide for better drainage if small catch basins were <br />installed on this culvert to pick up the street drainage and deposit in the County ditch. <br /> <br />. <br /> <br />\\SPNWFS\VOL 1\DATA\PROJ\808540j\ltr 11-18-99 wensman.doc <br /> <br />1326 Energy Park Drive. St. Paul, MN 55108 . 651/644-4389 fax 651/644-9446 toll free 888/368-4389 <br />