2008-11-06_REVISION - C1982056 (3)

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Peabody Twentymile Coal Company 29515 Routt County Road #27 Oak Creek, CO 80467 970.879.3800 November 4, 2008 Ms. Janet Binns Environmental Protection Specialist Colorado Division of Minerals and Geology 1313 Sherman Street, Room 215 Denver, Colorado 80203 (303) 866-3567 x 8107 v M?ntng and RE: Foidel Creek Mine (Permit No. C-82-056) Minor Revision (MR08-232) for Powerline Construction for 6MN Reservoir. Dear Ms. Binns: Twentymile Coal Company (TCC) requests CDRMS approval of the subject Minor Revision to the approved Permit to install powerpoles and construct power distribution lines to serve the 6MN Reservoir area. The proposed powerline construction project is necessary to supply power for pumps at the Reservoir, and will result in minimal new surface disturbance. The project will involve placement of approximately fifteen new powerpoles and associated powerline construction (approximately 1,500 feet) between existing electrical substation 12 (NW Ventillation Fan) and the eastern edge of the proposed 6MN reservoir.. Substation 11 is a second primary distribution substation located on the 6MN Road, which converts incoming power from 69KV to 12,470V and transfers the power through overhead distribution lines to three secondary substations (Substations 2, 12, and 13). Substation 2, is located near the IORT Dewatering Well. Substations 12 and 13 convert the incoming power from 12,470V to 4,160V and distribute it to the associated NW Mains Ventilation Fan installation, and the 6MN Facilities, respectively. Substation 12 is approximately 30 x 20 feet, and consists of a fenced transformer pad, transformer, associated electrical equipment, and connecting power distribution lines. Powerpole installation will involve the use of existing roads or limited overland access to the individual pole locations, localized shallow auger drilling to set each pole, pole placement and anchoring, and distribution of the limited drill cuttings over the small area surrounding each pole. Given the very limited temporary disturbance involved, TCC does not propose topsoil recovery or reseeding for the individual powerpole locations. It should be noted that pole locations have been selected specifically to avoid stream buffer zones or other sensitive areas. Constriction of the distribution lines will involve the use of existing roads or limited overland access by a bucket truck and cable truck to install cross-bars, insulators and conductors. All cross-bars will have installed raptor deterrents, consistent with approved raptor protection guidelines. Powerline installation will not affect existing drainage systems, given the minimal surface disturbance and very temporary nature of the activities involved. This submittal includes revised PAP text and maps/drawings addressing the location of the proposed powerline construction activities. New and revised PAP materials are identified by the enclosed Summary of Revisions/Additions. TCC would like to proceed with this project as soon as possible, so that construction can be completed under favorable weather and ground conditions, therefore we appreciate your consideration and cooperation in facilitating timely review and approval. Once you have had opportunity to review the accompanying information, please feel free to contact me with any questions or to discuss related matters. Best regards, Twentymile Coal Company Jerry M. Nettleton Environmental Supervisor cc: Mike Berdine/TCC C:\Documents and Settings\jhb\Local Settings\Temporary Internet Files\OLK3B8\MR08-232 6MN Powerline TL.doc