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Response <br /> <br />The city does not require setbacks from storm water ponds beyond what the drainage and <br />utility easement place around them provides. However, as part of the platting process the <br />city engineer reviews and approves a development plan that dictates the lowest floor <br />elevations of proposed homes. This development plan takes into consideration 100 year <br />flood elevations, seasonal high water tables, and the general plat drainage including <br />emergency overflow elevations. In addition, areas where soils have been corrected are <br />required to be tested for compaction prior tothe placement of footings. <br /> <br />Item 18. Surface Water Runoff <br /> <br />This comment questions the efficiencies of pollutant removal of the storm water ponds in <br />the plat, if any monitoring of Trott Brook has been done, and how the development will <br />affect water quality and quantity in this stream. <br /> <br />Response <br /> <br />A query of the Minnesota DNR did not yield any measured data regarding fish <br />populations or water quality in Trott Brook. However, it is expected that the proposed <br />project will not have a significant affect on the quality or quantity of the water in Trott <br />Brook. <br /> <br /> oo <br /> <br />Regarding water quality, runoff from streets, parking and buildings will be directed <br />through sedimentation/treatment ponds that meet Nationwide Urban Runoff Program <br />Guidelines. The proposed residential use of this property with runoff directed through <br />treatment ponds may even improve water quality over its past use as a hog feedlot and <br />other farming practices. <br /> <br />The proposed on-site retention ponds combined with the use of the storm water storage in <br />the existing wetlands on the property should negate concerns regarding the affects the <br />proposal will have on water quantity. In addition, many areas that are now void of <br />vegetation from past farming practices will have vegetation reestablished after the <br />development is completed, aiding their ability to perk water. <br /> <br />Sincerely, <br /> <br />'~uildin~g ~~oning <br /> <br />Administrator <br /> <br /> <br />