2011-07-01_REVISION - C2009087 (2)

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Peabod June 30, 2011 1111 ENERGY Peabody Sage Creek Mining, LLC Mr. Jason Musick Colorado Division of Reclamation Mining & Safety (DRMS) 1313 Sherman Street, Room 215 Denver CO 80203 Peabody Sage Creek Mine 36600 Routt County Road 27 Hayden, CO. 81639-0250 fteCEIVED JUL 07'011 Division di Koch Mining and fiction. Safely Re: Peabody Sage Creek Mine (Permit No. C- 2009 -087) Minor Revision (MR04 -11) for Geotechnical Investigations associated with a proposed Overland Conveyor Mr. Musick: Peabody Sage Creek Mining (PSCM) requests CDRMS approval of a Minor Revision (MR04- 11) to the existing permit. The site geotechnical investigations are required to provide foundation and soils information for evaluation and design of support structures for the proposed overland conveyor. It should be noted that two separate Minor Revision applications are being submitted for the planned geotechnical investigations, one for the TC Permit, and one for the PSCM Permit, each addressing the portion of the proposed conveyor that falls within their respective permit areas. As a result of conceptual design evaluations, a 25 -foot wide conveyor corridor has been defined, extending from the PSCM portal area to the TC coal handling facilities. As proposed, the overland conveyor, and a light -use construction and maintenance service road would fall within this corridor. Site geotechnical investigations for the proposed overland conveyor will involve completion of 35 to 40 shallow (10 -30 foot deep) geotechnical test holes along the length of the corridor. An all- terrain drill rig will be used to complete 4 -inch hollow -stem auger sample holes to characterize foundation materials, assess depth to bedrock and groundwater conditions, and to collect material samples for lab testing. All auger -holes will be backfilled with cuttings and leveled, on completion of drilling and sampling. This submittal includes revised PAP text, exhibits; and maps, addressing the location, nature, configuration, and associated reclamation of areas affected by the proposed geotechnical investigations. New and revised PAP materials are identified by the attached Insertion Instructions.