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J. E. STOVER & ASSOCIATES, INC. <br />P.O. Box 60340 <br />GRAND JUNCTION, COLORADO 81506 <br />PHONE: (970) 245-4101, FAX 242-7908 <br />MINE ENGINEERING <br />MINE RECLAMATION <br />May 22, 2008 0 011 0001150 <br />Mh 21 <br />an, <br />Mike Boulay ea <br />Division of Reclamation, Mining and Safety 00?' 04 <br />1313 Sherman Street,'Room 215 <br />Denver, CO 80203 <br />Re: CAM-Colorado LLC <br />Red Cliff Mine <br />Permit Application C-2008-086 <br />Dear Mr. Boulay: <br />CIVIL ENGINEERING <br />CONST. MANAGEMENT <br />The DRMS' letter dated May 5, 2008 deemed the referenced permit application incomplete. On <br />behalf of CAM-Colorado LLC, following are its responses to the DRMS' comments and <br />concerns. <br />DRMS - In accordance with 2.05.2 and 2.10.3 please provide a description and <br />appropriate map(s) of all areas to be affected by the proposed underground mining <br />activities over the life of the operation, and timing and subareas for which it is anticipated <br />additional permits will be sought. <br />CAM - Page 2.05-2 was amended to explain the proposed permit boundary <br />circumscribes all areas of land which are or will be affected by surface coal mining and <br />reclamation operations during the life of the operation. <br />2. DRMS - Please update sections 2.04.7 and 2.05.6 of the application with an estimated <br />mine inflow rate and a description of how mine inflow water will be handled <br />(consumptively used by the mine or discharged to the surface). The Division <br />recommends that in addition to the long term mine inflow estimate, CAM-Colorado <br />provide a worse case scenario reflecting the maximum coal production rate of 8,000,000 <br />tons per year. Given the fact that water has been encountered in the Cameo coal seam <br />and if the worse case scenario of 8,000,000 tons of coal per year are mined, then there <br />will likely be much larger mine inflows. Please identify in the probable hydrological <br />consequences (PHC) section of the application the potential impacts resulting from the <br />estimated maximum mine inflow rate. <br />CAM- Map 10 Water Bearing Zones, Mesaverde Formation shows the projected <br />saturated zone for the Cameo seam. Only a small area in the northeast corner of the <br />permit boundary is projected to be saturated during the life of the operation. This <br />projection of the saturated zone for the Cameo seam forms the basis for the statement <br />on page 2.04-39 that there should not be any mine inflow during the initial permit term. <br />Page 2.04-22 provides an estimate future inflow rate.