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PQabody <br />Twentymile Coal Company 29515 Routt County Road n27 <br />Oak Creek, CO 80467 <br />970.879.3800 <br />Apri128, 2005 <br />Mr. Byron Walker, Environmental Protection Specialist ~,, ` ~ -- `~ <br />Division of Minerals and Geology ~ ~~ <br />1313 Sherman Street, Room 215 O,i,;,~o ~ 2005 <br />(D303) 866-4941do 80203 °O~~4i°eja~s&Ge%Y <br />RE: Foidel Creek Mine (Permit No. C-82-056) -Technical Revision (PROS-48) for 6-North Mains <br />Shaft and Associated Ancillary Equipment and Facilities <br />Dear Mr. Walker: <br />Twentymile Coal Company (TCC) requests CDMG approval of a Technical Revision to our existing approved <br />Permit for construction, operation, and reclamation of a new ventilation shaft and associated ancillary equipment <br />and facilities for TCC's Northern Mining District. The new ventilation shaft is needed to provide adequate airflow <br />for development and mining of both the Northern and Western Mining Districts. <br />The 6-North Mains Ventilation installation will be located on the north side of Fish Creek, north and west of the <br />present Northwest Mains Ventilation Fan. Alight-use road will be extended approximately 2,900 feet from the <br />existing Northwest Mains installation to this location, and a pad and required drainage structures ill be <br />constructed. The completed shaft will be approximately 10-18 feet in diameter (liner ID) and 1,300 feet deep. <br />Associated ancillary equipment and facilities will include the light-use road; a lined cuttings pit; a reinforced <br />concrete pad; possibly an air heater, housing, and propane storage tank; powerline; substation and grounding bed; <br />seven 13-inch utility boreholes; surface compressor installation; rock dust tank, water storage tattle; and bulk <br />material storage tank. A maximum of approximately 2.4 acres of new surface disturbance will result from the <br />construction of the light-use road and 11.1 acres for the ventilation installation pad area. The proposed installation <br />will be a ventilation intake shaft and will not include a fan installation, so fan noise will not be a concern. <br />This submittal includes supplemental baseline information for the affected areas, provided as exhibits for inclusion <br />in the PAP; detailed design, operations, and reclamation information, provided as both revised PAP text and <br />exhibits; and revised maps, reflecting the location and configuration of the new facilities, road, and powerline. <br />New and revised PAP materials are identified by the attached Summary of Revisions/Additions. <br />We would like to proceed with this project as soon as possible, to take advantage of favorable weather and ground <br />conditions during the 2005 construction season. We, therefore, appreciate your consideration, cooperation, and <br />assistance in facilitating timely review and approval of this revision application. After you have opportunity to <br />review the accompanying information, please feel free to contact me with any questions or to discuss submittal <br />materials or related matters. <br />Best <br />Company <br />Supervisor <br />cc: Mike Berdine/TCC <br />