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i °+ <br />.!. E. STOVER & ASSOCIATES <br />2768 COMPASS DRIVE, SUITE 1C7 <br />GRAND JUNCTION, COLORADO 81506 <br />PHONE: (970) 245101, FAX 242-7908 <br />MINE ENGINEERING <br />MINE RECLAMAT{ON <br />April 27, 1999 <br />Joseph J. Dudash <br />Division of Minerals and Geology <br />1313 Sherman St., Room 215 <br />Denver, CO 80203 <br />Re: Eowie Resources Limited - 'o'owie ivo. 1 mine <br />Windy Gap Process <br />TR-029 & TR-031 <br />Permit C-81-038 <br />Dear Mr. Dudash: <br />CML ENGINEERING <br />CONST. MANAGEMENT <br />RECENED <br />A4R 2 91999 <br />Division of Minerals & Geobgy <br />The estimated water depletion from the Bowie No. 1 Mine was last evaluated in 1994 when <br />the mine planned to increase production to 1.5 rnillion tons per year (Ref Volume 9A, Tab, <br />Fish and Wildlife). The operator estimated the following depletion for a production rate of <br />1.5 million tons per year: <br />Item Acre FeetNear Basis <br />Mine Consumption 28.7 1.5 Million tons/year <br />Surtace Consumption 30.9 1.5 Million tons/year <br />Pond Eva oration 4.6 1.47 acres of onds <br />Total Consumption 64.2 <br />Technical revision number 29 is associated with the construction of the east ridge waste <br />disposal area. This action will increase the size of the gob pile sediment pond by 0.16 <br />acres. This translates into an increase in evaporative loss from 4.6 to 5.1 AF/year. <br />Technical revision number 31 provides for an increase in production at the unit train <br />loadout to 3 million tons per year. In anticipation of a pending increase in production from <br />3 to 5 million tons per year at the loadout, I propose to prorate the surtace consumption <br />from 1.5 to 5 million tons per year. This will allow for increased consumptive use at the <br />loadout and also allow the Bowie No. 1 Mine to go back into production without going <br />through this process again. Therefore, the estimated depletion associated with the Bowie <br />No. 1 Mine is as follows: <br />