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Peab 0 <br />1111 ENERGY <br />Twentymile Coal, LLC 29515 Routt County Road 27 <br />Oak Creek, CO 80467 <br />9.38 0 <br />'x' <br />Mr. Jason Musick, Environmental Protection Specialist NOV '25U'14 November 17, 2014 <br />Division 13 Sherman StreetiRoom2l Mining, and Safety <br />Denver, Colorado 80203 <br />(303) 866 -3567 X 8134 <br />RE: Twentymile Coal, LLC - Foidel Creek Mine (Permit No. C -82 -056), Minor Revision (MR14 -285) — <br />Modifications to 5 -Main North Cement Borehole <br />Dear Mr. Musick: <br />Twentymile Coal, LLC (TC) requests CDRMS approval of a Minor Revision to our existing approved Permit to <br />reflect minor changes in the design of the previously approved (MR14 -283) 5 -Main North Cement Borehole. <br />Further review of both the ground configuration and the point of connection underground have resulted in the <br />following minor design changes: <br />➢ Movement of the borehole and pad approximately 200 feet to the west <br />➢ Elimination of the south connecting road due to the steeper terrain in this area <br />➢ Realignment of the north access road <br />➢ Consolidation of the planned soil material stockpiles to minimize disturbance <br />All other construction, operation, and reclamation considerations for this installation remain the same. The <br />proposed realignment and pad relocation fall within the area covered by the project cultural resource surveys, <br />and the existing bond calculations are conservative, given the reduction in disturbance areas. <br />This submittal includes an application form and revised map for replacement in Exhibit 49AA reflecting the <br />above -noted design changes. We would like to proceed with this project as soon as possible, to take advantage <br />of favorable conditions during the remainder of the 2014 construction season. We, therefore, appreciate your <br />consideration, cooperation, and assistance in facilitating timely review and approval of this revision application. <br />After you have opportunity to review the accompanying information, please feel free to contact me with any <br />questions or to discuss submittal materials or related matters. <br />Best regards, <br />Twentymile Coal, LLC <br />Je . NettI,9 n <br />Manager E ' onmental Affairs <br />