2020-06-25_REVISION - C1981019 (6)

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RULE 2 PERMITS Power Lines Because Colowyo utilizes many electric-powered mining machines, a network of electric power lines is located in the permit area to supply electricity to the equipment. The locations of the Colowyo power lines are shown on the Existing Structures maps (Map 22A and Map 22B). Electrical power lines located in the permit area will be constructed in accordance with requirement of Section 4.18 to minimize potential electrical hazards to large raptors. The major pieces of equipment that are powered by electricity and will be used in the South Taylor area are draglines, shovels and the highwall miner. Therefore, during the life of the mine it is necessary to periodically move the existing power line loop to accommodate the advancement of the pit. Along the both end walls and both highwalls of the South Taylor pit operations, highwall mining activities will be conducted to extract coal that would otherwise be deem non-recoverable under existing operational procedures and economic conditions. See Map 23A for the location of the area to be mined. Haul and Access Roads All truck routes within the South Taylor area and connecting the South Taylor area to the existing operation will be constructed as in-pit truck routes, due to their location within existing pit limits. Therefore, all truck routes constructed during the permit term within the immediate mining area are exempt from any construction specifications, since roadways within the immediate mining pit area are not designed in accordance with Rule 4.03.1(1)(d)(1). In order to access the Section 28 Sediment Pond during construction and to access this area for routine monitoring and maintenance operations, the existing two-track Sturgeon Road will be upgraded. See Section 4.03 for construction requirements and Map 25B for road design information. 2.05.3 (4) Operation Plan—Ponds,Impoundments, and Diversions To control runoff, and protect surface and ground water quality, Colowyo will construct several new sedimentation structures and diversion ditches. The designs for these features are presented in Exhibit 7, Item 20. All ponds, impoundments, and diversions are designed to meet or exceed the requirements of 2.05.3(4) and 4.05.6. All sediment ponds will be constructed and maintained in accordance with the parameters mentioned in Volume 1 Section 2.05. Impoundments will be inspected quarterly as discussed in Section 4.05.6. 2.05.3 (5) Topsoil Prior to any mining related disturbances, topsoil will be removed from the site to be disturbed as discussed in Volume 1, Section 2.05 and Section 4.06 and redistributed or stockpiled as necessary to satisfy the needs of the reclamation timetable. Topsoil will be removed in the permit area by large crawler mounted bulldozers, loaders or scrapers as described in Volume 1, Section 2.05.3. South Taylor/Lower Wilson—Rule 2,Page 71 Revision Date: 6/22/20 Revision No.: MR-220