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and mining in Panels 12- through 20 -Left and 13- and 14 -Left Inby. Mine plan modifications under TR09 -71 will
<br />include additional reserve areas in the WMD, with development and mining of the 19- and 20 -Left Panels from the
<br />7- and 9 -North Mains. Alignment of development entries may be adjusted, as necessary, to address geologic
<br />conditions. Main and sub -main entries will be developed by continuous miner, as is current practice.
<br />WOLF CREEK RESERVE (WCR)
<br />WC (Panels WC -1 through WC -5, TR13 -83)
<br />TR13 -83 addresses the initial development activities necessary to access and develop the Wolf Creek Coal Seam
<br />reserves, which underlie portions of the EMD and NMD. Initial development activities will specifically
<br />include development and placement of long -term support for a 3 -entry rock -slope access, development of
<br />up to six sets of gate -roads and bleeder entries to support future longwall development, and related
<br />ancillary activities, including underground dewatering activities and extension of mine ventilation and
<br />support systems. TC controls all of the coal required to mine in these areas. Development of the WCR will occur
<br />in parallel with ongoing mining in the WMD, with a combined annual production of up to 9 million tons. The rock
<br />slope to access the WC Reserve will be driven from the existing 5 -Main North Entries approximately 670 feet
<br />down to the Wolf Creek Coal Seam at a 12 percent grade. The first 130 feet of the rock -slope will include
<br />steel arch supports and a multi -plate liner for supplemental support. The remainder of the rock -slope will
<br />be driven in competent rock using conventional supports (resin - grouted roof bolts and steel mesh).
<br />Development will be initiated in the existing State Coal Lease (CO- 3229), with most of the development occurring
<br />in either this State lease or in TC's fee coal reserves, as shown on Map 23. Alignment of development entries may
<br />be adjusted, as necessary, to address geologic conditions. Main and sub -main entries will be developed by
<br />continuous miner, as is current practice.
<br />(2) Operation Description
<br />The general operation plan for the Foidel Creek Mine is shown on Map 23, Mine Plan. This map shows the
<br />planned schedule for the mine advance throughout the current permit term. Separate five -year renewals will be
<br />obtained and incremental performance bond will be posted, as necessary and appropriate. The permit area
<br />associated with the underground coal mine encompasses approximately 22,447 acres. Total permitted disturbance
<br />acreage is approximately 660.4 acres.
<br />As shown on Maps 1 and 2, there are three remaining parcels of un- leased federal coal within the Mine Permit
<br />Area., located in Section 33, T6N, R86W and Sections 22 and 23, T5N, R86W. In addition, the existing federal
<br />coal lease (COC- 54608) in Section 21, T5N, R86W does not include the Wolf Creek Coal Seam. The BLM
<br />controls the coal within these areas, and the surface of the parcel of land located in the SW' /4 SW' /4 Section 33,
<br />T6N, R86W. It is not anticipated that the federal coal in Section 33, T6N, R86W will be mined, since it is in an
<br />area where the coal seam dips steeply upward on the edge of the synclinal basin. In February 2009, TC obtained
<br />the Federal Coal Lease from the BLM for the previously un- leased federal coal in Sections 22 and 27 of T5N,
<br />R87W, and incorporated portions of these areas in the final Phase III mine development and longwall mining plans
<br />(under TR09 -68 and PR09 -08). TC is pursuing leasing of the federal coal and inclusion of the Wolf Creek Seam
<br />under COC -54608 for Sections 21, 22, and 23, T5N, R96W in conjunction with future mining plans for the Wolf
<br />Creek reserve.
<br />Map 23A identifies previously mined, and delineates active and planned future mining areas at a more detailed
<br />scale. Evaluations of projected subsidence and related effects, initially based on subsidence modeling, and
<br />subsequently confirmed by actual mining and subsidence monitoring experience, indicate that subsidence would
<br />not significantly impact the designated AVF or related environmental values. For actual and potentially impacted
<br />portions of the designated Fish Creek AVF, the subsidence evaluation approach and conclusions are documented by
<br />Exhibits 713, 7C, 45 and 46 and by appropriate revisions to Exhibit 14.
<br />TR13 -83 2.05 -3 12/23/13
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