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1111 Peabodq <br />Twentymile Coal, LLC <br />R�CE�V'�D 29515 Routt County Road 27 <br />G Oak Creek, CO 80467 <br />970.879.3800 <br />Mr. Jared Ebert H March 19, 2014 <br />Environmental Protection Specialist p; 'J;ston of Reclamation, <br />Division of Reclamation, Mining, and Safety mi6ing & Safety <br />1313 Sherman Street, Room 215 <br />Denver, Colorado 80203 <br />(303) 866 -3567 X8120 <br />RE: Foidel Creek Mine (Permit No. C -82 -056) - Permit Revision PR14 -10, Wolf Creek <br />Reserve Development and Mining — Supplemental Information <br />Dear Mr. Ebert: <br />As indicated in both our original submittal and subsequent phone conversations, certain supplemental <br />information supporting our PR application is being, or will be, developed and provided in parallel with <br />review of the application. With this submittal, Twentymile Coal, LLC (TC) is providing the Wolf <br />Creek Subsidence Evaluation Report, an updated Mine Plan Map, and relevant updated subsidence <br />text. In general, the updated subsidence text does not change significantly from the previously <br />submitted text, with the only changes being minor edits to assure consistency between the text and the <br />final Subsidence Report. <br />We have reviewed both our existing agreements relative to potential subsidence effects, and the Permit <br />mitigation and monitoring plans. All potential subsidence effects associated with the proposed Wolf <br />Creek Reserve mining activities are addressed by either existing agreements or the identified <br />mitigation and monitoring plans. Existing agreements are in -place which cover potential subsidence <br />effects for Routt County Road 33 (RCR33) and the Yampa Valley Electric — Fish Creek/Steamboat <br />Powerline. While potential subsidence effects on other lands and structures are adequately addressed <br />by the mitigation and monitoring plans. we are currently finalizing negotiations on updated subsidence <br />agreements for the Union Pacific Energy Spur and the Ashley Property (current agreement expires in <br />08/15), and expect to be able to provide those final agreements in the near future. <br />We appreciate your timely review of this response submittal package and look forward to approval of <br />the pending Permit Revision application. Thanks for your continuing cooperation and assistance. <br />Please feel free to contact me with any questions regarding this submittal or related matters. <br />Best regards, <br />Twentymile ��_C <br />Jerry M. N ton <br />Manag t ironmental Affairs <br />cc: Mike Berdine /TC <br />Ed Brady /TC <br />