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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 technical revision application for a new coal mine waste refuse <br />pile, referred to as the Refuse Pile Expansion (RPE) East, to be included in MCC's Colorado <br />Division of Reclamation, Mining and Safety ( CDRMS) Mining and Reclamation Permit No. <br />C- 1980 -007. The RPE East, required to dispose of waste rock and other mine development materials <br />generated as part of the coal mining and processing operations, will be located within No Name <br />Gulch, located approximately one mile southeast of the existing WEM operations and processing <br />facilities. Figure 1 -2 provides a site map of the WEM and the proposed location of the RPE East. <br />The RPE East has been designed to conform to the CDRMS Regulations of the Colorado Mined Land <br />Reclamation Board for Coal Mining (Rules). <br />This document is presented in the following sections: <br />0 • 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 />Information regarding legal and financial information, existing site features and environmental <br />resources, and descriptions of the overall mining operations can be found in the original mine permit <br />application and supporting documents. <br />PA\Mpls \06 CO \26 \06261003 MCC Refuse Pile Site Review & Permit \Workl`iles\Pernut Application \Text \2010- 04- 19_RPE East Permit Application.doc I <br />