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Mr. Chris Leeseberg <br />May 21, 2002 <br />Page Two <br /> <br />This natural Iow area shows a 100-year, 10-day snow melt elevation at 1012.1. This elevation will <br />inundate an area of property extending into two lots to the east. However, given the natural <br />topography of the area, this area has probably always seen runoff from snow melt and rain events. <br /> <br />The storm sewer system from the cul-de-sac to the natural Iow area only has one catch basin. If this <br />catch basin is plugged, the natural overflow will be through Lot 3, Block 1. An easement will be <br />needed to encompass the emergency overflow area. In addition, we would recommend that a <br />second catch basin be installed in the cul-de-sac to add additional inlet capacity and lessen the <br />opportunity for a plugged catch basin to cause water to overflow the curb line. <br /> <br />If you have any questions regarding these comments, please call. <br /> <br />Sincerely, <br /> <br />Howard R. Green Company <br />Terry J. Maurer, P.E. <br /> <br />Ltr-052102-Leeseberg.doc <br /> <br />Howard R, Green Company <br /> CONSULTING ENGINEERS <br /> <br /> <br />