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Peabody <br />Twentymile Coal <br />February 1, 2010 <br />Mrs. Janet Binns <br />Environmental Protection Specialist <br />Division of Minerals and Geology <br />1313 Sherman Street, Room 215 <br />Denver, Colorado 80203 <br />(303) 866-3567 X8107 <br />RErEIVED <br />L, J32010 <br />y n <br />Mining and Sa * ? <br />29515 Routt County Road 27 <br />Oak Creek, CO 80467 <br />970.879.3800 <br /> <br />RE: Foidel Creek Mine (Permit No. C-82-056) -Technical Revision TR09-70,18-Left Mine <br />Water Transfer Pipeline Technical Adequacy II/III Responses <br />Dear Mrs. Binns: <br />With this submittal, Twentymile Coal Company (TCC) is responding to the specific comments <br />presented in your Technical Adequacy comment letters of January 11th and 13th, 2010. Our <br />accompanying responses are presented in a Comment/Response format to facilitate your review. <br />Please note that we have edited the text discussion to provide for the alternative of boring the pipeline <br />under the Fish Creek channel. This alternative will result in no more disturbance than the proposed <br />trenching activities (boring pits would be similar in dimension to the pipeline trench excavation and <br />would be within the 40-foot pipeline construction corridor).Also included in this response submittal are <br />two copies of all PAP text, and supporting materials that have been revised or added in response to <br />your comments, and as noted in our corresponding responses. New or revised materials provided for <br />insertion/replacement are identified, and placement instructions provided, by the attached Summary of <br />Revisions/Additions. <br />We appreciate your timely review of this response submittal package and look forward to approval of <br />the pending Technical 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 rern, <br />ards;Je wenompany <br />Enviro en I Manager <br />cc: Mi e Berdine/TCC