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STATE OF COLORADO <br />DIVISION OF RECLAMATION, MINING AND SAFETY <br />Department of Natural Resources <br />1313 Sherman St., Room 215 <br />Denver, Colorado 80203 <br />Phone: (303) 866-3567 <br />FAX: (303) 832-8106 <br />June 30, 2010 <br />Mr. Jerry Nettleton <br />Twentymile Coal Company, LLC <br />29515 Routt County Road #27 <br />Oak Creek, CO 80467 <br />RE: Foidel Creek Mine (Permit No. C-82-056) <br />Technical Revision No. 73 (TR-73), Adequacy Responses Review and Additional <br />Comments <br />Dear Mr. Nettleton, <br />COLORADO <br />DIVISION OF <br />RECLAMATION <br />MINING <br />SAFETY <br />Bill Ritter, Jr. <br />Governor <br />Mike King <br />Executive Director <br />Loretta E. Pineda <br />Director <br />The Colorado Division of Reclamation, Mining, and Safety (Division) has reviewed Twentymile Coal <br />Company's (TCC's) responses to the adequacy items which the Division identified under a cover letter <br />dated June 11, 2010. The Division received TCC's response to our June 11, 2010 letter on June 28, <br />2010. This response letter will also include further adequacy comments identified by the Division. The <br />Division's responses to TCC's comments concerning adequacy items identified by the Division are <br />below. <br />1. Division's initial comment: Appendix A, revised page TRIO-73, does not include the <br />reclamation costs for the entire proposed disturbance. Revised page 2.05-50.9 proposes to <br />backfill and grade the trench incrementally as the pipeline is installed, reclamation costs must <br />be included for the entire length of the disturbance. <br />Please include costs for backfilling and grading, and topsoil replacement for the entire 7.5 acres <br />of disturbance. <br />TCC's Response: The reclamation cost estimate has been reviewed and revised to reflect <br />reclamation costs for the entire disturbance area, even though most of the pipeline reclamation <br />will occur concurrently with construction. The revised reclamation cost estimate accompanies <br />these responses. <br />Division response: Although this response is adequate, the Division has found <br />inconsistencies with the reclamation cost estimate in TCC's response and the proposed <br />revised text associated with TR-73. The inconsistencies are as follows: <br />Office of Office of <br />Mined Land Reclamation Denver • Grand Junction • Durango Active and Inactive Mines