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Peabody <br />Twentymile Coal Company <br />29515 Routt County Road #27 <br />Oak Creek, CO 80467 <br />970.879.3800 <br />May 13, 2009 <br />Mrs. Janet Binns <br />Environmental Protection Specialist <br />Colorado Division of Minerals and Geology <br />1313 Sherman Street, Room 215 <br />Denver, Colorado 80203.- <br />(303) 866-3567 X 8107 <br />9 <br />0011 <br />RE: Twentymile Coal Company - Foidel Creek Mine (Permit No. C-82-056), Minor Revision <br />(MR09-237) for New Discharge Pipeline & Headgate at Fish Creek Borehole Treatment Pond, and <br />New Drainage Culvert on Pond B Access Road. <br />Dear Mrs. Binns: <br />Twentymile Coal Company (TCC) requests CDRMS approval of a Minor Revision (MR09-237) to the <br />approved Permit, for installation of new discharge pipeline and headgate at the Fish Creek Borehole <br />(FCBH) treatment pond that controls discharge through CDRMS site 115 to Fish Creek. This pipeline <br />would replace an existing discharge pipeline that appears to be subject to clogging. Construction is <br />anticipated to take place during the upcoming Longwall move in May, during which period water from <br />the treatment pond is not required underground. Thus TCC will drain the pond to allow construction. <br />The pipeline will consist of a 12" PVC sewer line extending approximately 50 from the treatment pond to <br />the 115 drainage channel. <br />TCC also requests approval for the installation of an 18" culvert, extending from a drainage sump <br />constructed along bottom of the Pond B access road, to an existing collection basin located immediately <br />south of the access road. The Pond B access road had been an on-going concern during wet periods where <br />runoff erosion could discharge fines into a vegetative area along Foidel Creek. A soil berm located <br />between the access road and Foidel Creek will prevent future discharge into the creek. A sump and <br />culvert located at the base of the road will direct runoff into the existing collection basin that eventually <br />drains to Pond B. <br />The proposed FCBH pipeline and Pond B sump and culvert are shown on Map 24 (sheet 3 of 3, and 1 of <br />3, respectively). All other minor revision documents are enclosed. <br />G:\Environmental\REVISION\MINOR-RV\MR09-237 FCBH Discharge & Pond B Culvert\MR09-237 FCBH Discharge & <br />Pond B Road Culvert TL.doc\FCBH Discharge Line & Pond B access road culvert CL.doc