2013-10-08_REVISION - C1982056 (22)

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Stipulation No. 64: was attached to the permit through TR-67, approved on November 13, 2009. Twentymile Coal is approved to construct the Refuse Disposal Area Expansion in accordance with designs approved in Technical Revision No. 67. Twentymile Coal Company requested to provide bond for the increased disturbance area in three increments. The first increment, “Initial Bonded Disturbance” of 50.0 acres, is limited to construction of 30.3 acres of refuse pile expansion, 2.4 acres of haul road corridor, 5.9 acres of unclassified stockpile, 3.5 acres of topsoil stockpile, .04 acres of stockpile haul corridors, and 7.5 acres of construction of RDA10 and RDA11 ditches, as shown on Map C-102 (11/13/2009). Prior to disturbance of the Refuse Disposal Disturbance, Twentymile Coal is required to submit additional bond adequate for disturbances associated with bonding increments I and II. No disturbance associated with bonding increments I and II shall occur prior to submittal and Division approval of additional bond. The current progress of the RDA Expansion does not extend beyond the originally delineated Phase I area. TC will begin the extension of the underdrain and construct additional temporary perimeter collection ditches in conjunction with the initiation of Phase II of the RDA Expansion. Phase II will involve an additional 30 acres of disturbance for the Phase II footprint and soil removal buffer zone. All bonding costs associated with the Phase II expansion have been incorporated in the RN-06 cost estimate. The information associated with Stipulation No. 64 has been incorporated into the PAP. IX. Coal Mine Waste – Rule 4.11 The Coal Mine Waste Fire Fighting Plan is found in Exhibit 25a of the permit (4.11.1). Twentymile Coal Company has previously been approved to dispose of select non- coal waste in a location south of the Area 1 pit. This location is located in spoil material from the Energy Mine No. 1, and is located above the water table (4.11.4(1)- (3)). In addition, coarse coal processing waste is placed in the coal mine waste bank. Coal processing waste fines are placed in the coal mine waste bank or returned (thickener underflow) to abandoned workings in the Southwest Mining District or Eastern Mining District. No coal mine wastes are stored at the Fish Creek Tipple (4.11.3). X. Backfilling and Grading The Foidel Creek mine portals are located along Foidel Creek, faced-up in the highwall from the adjacent surface mining activity in Eckman Park. Partial backfilling and grading was done to help seal the portal area from groundwater inflow. The remaining backfilling and grading will occur at the completion of mining activity at the Foidel Creek mine. No specific approvals are granted under this section. 29 Foidel Creek MineOctober 8, 2013