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COLORADO <br />Division of Reclamation, <br />Mining and Safety <br />Department of Natural Resources <br />1313 Sherman Street, Room 215 <br />Denver, CO 80203 <br />Kathleen G. Welt <br />Mountain Coal Company, LLC <br />PO Box 591 <br />Somerset, CO 81434 <br />October 12, 2016 <br />Re: West Elk Mine (Permit No. C-1980-007) <br />Technical Revision No. 139, (TR -139) <br />Initial Adequacy Review <br />Dear Ms. Welt, <br />The Colorado Division of Reclamation, Mining and Safety (Division) has completed the review of <br />materials submitted by Mountain Coal Company, LLC (MCC) in support of the TR -139 <br />application. <br />The initial application was accompanied by a Technical Memo authored by HydroGeo, Inc., <br />which described concisely the sites that are proposed to be removed from the water monitoring <br />program at the West Elk mine, and provided clear reasoning, with supporting evidence, to justify <br />the proposal. <br />The Division concurs with the conclusions reached by HydroGeo. <br />Please submit the relevant revised pages and maps to continue with TR -139. <br />The technical memo should also be included in the revision — possibly as an appendix to Exhibit <br />71. <br />The proposed decision due date for TR -139 is October 24, 2016. <br />Please feel free to contact me with any questions or comments. <br />Yours sincerely, <br />-yC it — <br />J., <br />Leigh Simmons <br />Environmental Protection Specialist <br />1313 Sherman Street, Room 215, Denver, CO 80203 P 303.866.3567 F 303.832.8106 http://mining.state.co.us <br />John W. Hickenlooper, Governor I Mike King, Executive Director I Virginia Brannon, Director * * x$76 <br />