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Peabod <br />Mr. Jason Musick, Environmental Protection Specialist <br />Colorado Division of Reclamation, Mining, and Safety <br />1313 Sherman Street, Room 215 <br />Denver, Colorado 80203 <br />(303) 866 -3567 X8134 <br />RE: Twentymile Coal, LLC - Foidel Creek Mine (Permit No. C -82 -056), Minor Revision (MR12 -262) — <br />Loadout Slope Stabilization <br />Dear Mr. Musick: <br />Twentymile Coal, LLC (TC) respectfully requests CDRMS approval of a Minor Revision (MR12 -262) to our <br />existing approved Permit to implement slope stabilization measures necessary to address unstable slope <br />conditions for an existing disturbed area between the TC Overland Conveyor and Railroad Spur. The area of <br />concern is just to the east of TC's Batchweigh Loadout Facility <br />The proposed slope stabilization measures were developed, after review and field- testing, by Northwest <br />Colorado Consultants. The proposed stabilization measures will involve installation of a line of drilled <br />reinforced concrete piers, extending into the bedrock, and selective placement and compaction of backfill <br />material, to reestablish the conveyor access road. <br />This submittal includes revised PAP text, exhibits; and maps, addressing the proposed slope stabilization <br />measures. New and revised PAP materials are identified by the attached Summary of Revisions /Additions. We <br />would like to proceed with this work as soon as possible, and therefore, appreciate your consideration and <br />cooperation in facilitating timely review and approval of this revision application. After you have opportunity <br />to review the accompanying information, please feel free to contact me with any questions or to discuss <br />submittal materials or related matters. <br />Best regard <br />Twe •• oal, LLC <br />Je M -ttleton <br />Envi . ' ental Manager <br />1111 ENERGY <br />cc: ike Berdine /TC <br />Richard Boakye Jiadom/TC <br />� o <br />J <br />\• • <br />Twentymile Coal, LLC Cy 0'\ `L `0 <br />O � <br />29515 Routt County Road 27 <br />Oak Creek, CO 80467 <br />970.879 3800 <br />May 4, 2012 <br />