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1.0 Introduction <br />Mountain Coal Company, LLC, (MCC) owns and operates the West Elk Mine (WEM) near Somerset, <br />Colorado for the production of coal. Figure 1 -1 shows the location of the mine. MCC needs to <br />develop additional coal refuse disposal capacity to support its mining operations. This document <br />provides supporting information for a coal mine waste refuse pile, referred to as the Refuse Pile <br />Expansion (RPE) East, to be included in MCC's Colorado Division of Reclamation, Mining and <br />Safety ( CDRMS) Mining and Reclamation Permit No. C- 1980 -007. The RPE East, required to <br />dispose of waste rock and other mine development materials generated as part of the coal mining and <br />processing operations, will be located within No Name Gulch, located approximately one mile <br />southeast of the existing WEM operations and processing facilities. Figure 1 -2 provides a site map <br />of the WEM and the proposed location of the RPE East. The RPE East has been designed to conform <br />to the CDRMS Regulations of the Colorado Mined Land Reclamation Board for Coal Mining <br />(Rules). <br />This document is presented in the following sections: <br />• Section 2 — refuse pile geotechnical investigation and design <br />• Section 3 — hydrologic analysis and design <br />• Section 4 — permit design for the refuse pile <br />• Section 5 — wetland delineation <br />• Section 6 — threatened and endangered species <br />• Section 7 — operating plan <br />• Section 8 — reclamation plan <br />• Section 9 — references <br />Revised July 21, 2011 <br />p5 <br />P \Mpls \06 CO \26 \06261003 RPE E Permit Mod Support \WorkFlles \Permit Application \Text \Exhibit 82 RPEE design 2011 -07 -21 TR 127.doc 1 <br />