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LEIGH WHITEHEAD ~ ASSOCIATES <br />GONSU LTING ENGINEERS AND SURVEYORS <br />-~ 6 WEST LAS VEGAS • PHONE 838-~1]B <br />COLORADO SPRINGS, COLORADO 80903 <br />State of Colorado <br />Mined Land Reclamation <br />723 Centennial Building <br />1313 Sherman Street <br />Denver, CO 80203 <br />RE: Castle Concrete Company <br />Pikeview Quarry <br />Application No. 77-211 <br />EXHIBIT G - WATER INFORMATION <br />A. The affect of the mining operation at the Pikeview Mine on surface and <br />ground water systems will be limited to that area included in the mining permit <br />and that land under ownership of the operator. There will be no adverse affect <br />on any surface or groundwater systems outside the operator's ownership or <br />control. <br />• This mine lies within the Douglas Creek Drainage Basin Northwest of Colorado <br />Springs. The mine operation has exterior runoff entering at five (5) different <br />points of concentration along it's Westerly boundary. Two (2) of these concen- <br />tration points are intermittent streams that simply flow through a portion of the <br />mine property during periods of storm runoff. The remaining three (3) points of <br />concentration are from small contributing basins located in the middle portion of <br />the Western boundary of the mining operation. These points of concentration are <br />designated South Drainage, Middle Drainage, and North Drainage. (Ref: Exhibit G-1 <br />Drainage Plan) <br />The South Drainage has an estimated contributing area of 121 acres as it <br />enters the mine boundary. The entire runoff, approximately 43 CFS, will pass <br />through the extreme Southwest corner of the mining property. The actual mining <br />operation will not disturb this water course or contrihute any runoff to it, <br />thus having no affect on this system. <br />The Middle Drainages consist of three (3) small gullies that enter the mine <br />area at the middle of the West boundary. From South to North, these sub-basins <br />. include acreages of 21, 9, and 29 acres with estimated runoff quantities entering <br />of 12, 5, and 17 CFS respectively. These flows will he dissipated ~.aith rock <br />P-G-1 <br />