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• �.� Howard R. Green Company February 20, 2002 File: 816950)-0240 Mr. Scott Harlicker Senior Planner City of Elk River 13065 Orono Parkway P.O. Box 490 Elk River, MN 55330-0490 RE: WINDSOR PARK THIRD ADDITION Dear Mr. Harlicker: As requested, we have reviewed the submittal package for the Windsor Park Third Addition. It was prepared by Bogart Peterson and Associates, and contained eight sheets. Those sheets consisted of preliminary plat; preliminary grading, erosion control, and mitigation plan; preliminary utility plan; and a preliminary landscape and lighting plan. The set that we reviewed had a revision date of February 11, 2002. We have subsequently received a second revised set . dated February 19, 2002. It appears that the February 19th plan is very similar, with the exception that three lots have been removed. Therefore, our comments will be based on the February 11, 2002, plan set. Based on our review, comments received at the staff review meeting, and a meeting with the Developer, we would offer the following comments: • A. PRELIMINARY GRADING PLAN • ■ We question many of the overflow elevations shown for the drainage ponds. For instance, the pond behind Lot 2, Block 8, shows an overflow of 945; however, the existing topography around that area shows most elevations in the 944+ range. How will this pond drain? It appears that there will not be a positive overflow. The same question holds true for the two drainage ponds located adjacent to Pascal Street on either side of Block 3. • No emergency overflow elevation is shown for the proposed pond in Outlot B. • Catch basin elevation should be provided for the proposed storm sewer in the Naples Court and Queen Circle cul-de-sacs. • The side slopes adjacent to 215th Avenue are relatively steep between Blocks 6 and 8. These should be flattened to provide a more gradual slope off of the side of the road. • There are several driveways that appear to be relatively flat. These would include Lots 3, 4, and 5, Block 9, and Lots 1 and 4, Block 11. • There are retaining walls noted for several of the lots in Block 11. More detail should be provided in these areas to indicate how the retaining walls will be built and how they will affect the grading of the lot. These types of walls will be required to be built • by the Developer prior to releasing the plat for building permits. Ltr 2-20-02 Harlicker.rev 1326 Energy Park Drive • St. Paul, MN 55108 • 651/644-4389 fax 651/644-9446 toll free 888/368-4389