2023-01-12_GENERAL DOCUMENTS - C1996083

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encompass the entire Federal coal lease (COC 61209)boundary and two proposed lease modification areas. No mining under Terror Creek was proposed. The D-2 coal seam was accessed from three entries which were constructed at an elevation of 6880 feet above sea level. This is the elevation where the D-2 coal seam generally outcrops,within the Bowie No. 2 permit area,and this elevation is approximately 800 feet above the old State Highway 133. The main entries have been driven down-dip to the north,with the sub-mains driven east and west from the mains. The B-2 coal seam was accessed through three mine entries. The B-2 coal seam portals are located below and just to the east of the D-2 coal seam portals,at an approximate elevation of 6630 feet. The mine facilities were constructed near the old Bowie townsite. Facilities include haul and access roads, a conveyor belt system,mine and facility benches,vent shafts, a truck loadout facility,a refuse pile, and various drainage and sediment control facilities. Approval of Permit Revision No. 3 added a downhill conveyor, coal stockpile and coal haul truck loading system to the facilities. In addition,the mine site entrance was relocated to the east of the original entrance. Coal was being exported from the truck loadout facility onto old State Highway 133 to the Bowie No. 1 Mine train loadout. However, approval of Permit Revision No. 6 permitted the construction of a unit train loadout. In Permit Revision No. 7,the operator received approval to construct the B-2 coal seam portal bench and to use haul trucks to bring coal from the B-2 coal seam portal bench up to the beginning point of the conveyor line on the D-2 coal seam portal bench. From there,the B-2 coal traveled through the conveyor line system to the unit train loadout. With the approval of Technical Revision No. 34,a conveyor was constructed to bring coal up from the B-2 coal seam portal bench to the D-2 coal seam portal bench. A drainage and sediment control system was constructed. The system consists of ditches, culverts, sedimentation ponds, and alternate sediment control areas referred to as"small area exemptions." Specific details regarding the designs for these systems are presented in Section 2.05,as are references to other sections of the PAP which present additional design details. For the currently approved operations, all available topsoil was salvaged and stored prior to facility construction. Approval of Permit Revision No. 6 permitted a variance from salvaging all of the topsoil at the train loadout coverfill stockpile. However,the variance was not needed since there was no excess soil material after construction of the unit train loadout. Specific details regarding topsoil salvage are presented in Section 2.05 of the Bowie No. 2 Mine PAP. Some surface blasting occurred during construction of the facilities. Details regarding the blasting plan are presented within Section 2.05 of the PAP. The Bowie No.2 Mine is located in areas known to be subject to mass movement processes. Extensive design efforts and regulatory review were implemented prior to the approval of the Bowie No. 2 Mine and during the review of Permit Revision No. 3 and Permit Revision No. 7. The details regarding the geotechnical aspects of the mining and reclamation plan are presented within Volume VII of the PAP. Most of the Bowie No. 2 Mine will be reclaimed to the post-mining land uses of rangeland,wildlife habitat and industrial. The approval of Permit Revision No. 6 in 2002 added cropland and pastureland to the post-mining land uses. All facilities areas and some roads will be reclaimed to reestablish the approximate original contour of the land. All portals, shafts and monitoring wells will be backfilled,in accordance with the applicable rules and with the reclamation details provided within the PAP. Some of the roads which existed prior to mining will be retained to serve the post-mining land use. 10