2017-05-11_PERMIT FILE - C1981012A (3)

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on Map 22 Mine Progress Map. Surface facilities associated with the underground mining are shown on Maps 11, Sheets 1-3 and Map 12. Future mining is subject to conditions encountered. Mining is currently planned for 2011 -2015 within the area bounded by the permit boundary as shown on Map 3-2011 Mine Plan. Mining for 2011-2015 is anticipated to occur in the Allen seam north of the Purgatoire River and East to the permit boundary. Mining is planned in the Apache seam south and east of the East Portals. Mining in the Allen and Apache Seams will not overlap except where the Apache Seam must cross over old Allen seam workings. Blue Seam mining will proceed east to the permit boundary and then turn south. Continued development and operations of the New Elk Mine within the lease area will require additional permit revisions to complete full recovery of the coal reserve. Minor additional surface disturbance may be associated with the continued operation of the mine. This surface disturbance, if required, will provide for ventilation and escape ways as development progresses away from the main portal area to maintain continued production and safe working conditions. The total affected area based on the TR -58 mine plan and historic mining is 3,799.5 acres. The permit boundary totals 4,199.5 acres. Long-term mine plans are shown on Figure 2. Life of mine acreage as shown on Figure 2 totals approximately 19,050 acres. Future revisions to the permit may propose mining in the Maxwell seam. 2.05.3 Operation Plan -Permit Area The planned underground workings are show on Map 3-2011 Mine Plan. The generalized stratigraphy of the Allen, Apache and Blue Seams are shown on Figure 1. The mine was temporarily closed and sealed in 1989. Dewatering ceased and the lower areas of the mine were gradually flooded. Phase 1 of resuming operations required remotely pumping mine water from the East Portal airshaft and other boreholes using surface -powered pumps. Approvals for this process were granted in 2008 and dewatering started in December of 2008. Phase Il re-establishes mine ventilation by breaching temporary seals at the East and West Portals and Apache Canyon, and reinstallation of fans at the East Portal and West Portal airshafts. Phase III is the development of entries to establish ventilation at the Apache Seam level. Phase IV is the active mining of coal. The planned development of mains and panels will occur as shown on Map 3 2011 Mine Plan. Development of main access entries north and south of the portals will begin upon completion of the connection to the East Portal airshaft. Mining in the Allen Seam will advance north and east of the slopes. Mains will be developed north off the slope bottom ramping down to the Allen Seam after crossing over old Allen works. The mains will be extended through the Allen Seam to the east and north. Panels will be driven off the mains, one panel to the east and four panels to the west. The Allen Seam mining is development only. No pillar recovery is planned in the Allen seam works. Section 2.05 RN -6 10/17/2016