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RULE 4 PERFORMANCE STANDARDS <br /> <br />Rule 4 Performance Standards 4-6 Revision Date: 6/4/25 <br /> Revision No.: MR-264 <br />A number of light use roads (See Maps 21 and 22) consist of pre-existing ranch roads which existed <br />prior to mining activities and will be left in place after mining activities have ceased and, as such, <br />they will not be reclaimed. Colowyo intends to infrequently travel or use such roads, with the main <br />usage being pond monitoring and maintenance, sediment control ditch monitoring and <br />maintenance, groundwater monitor well access, meteorological/air monitoring station access, etc. <br />Examples of such light use roads include, but are not limited to, roads to the West Pit, East Taylor, <br />and Prospect Ponds, access to the south collection ditch, etc. <br /> <br />A light-use road will be used to facilitate shorter equipment movements to additional areas of the <br />northern end of the mine. This light-use road begins south of the fuel storage tanks and <br />continues in a northwest direction towards the main coal haulage road with an approximate width <br />of 30 feet and a length of approximately 1200 feet. It enters the main coal haulage road just <br />below the traffic pattern crossover. Topsoil was stripped in accordance with Rule 4.06.2 and <br />placed on topsoil pile 15A directly to the west of the road. Maintenance will include maintaining <br />natural drainage across the roadway and maintenance of a swale on the northern portion of the <br />road which will transfer runoff to the existing ditch. Reclamation of this light-use road will be <br />completed immediately after the road is no longer needed for operations and will be reclaimed in <br />accordance with Rule 4.03.3(7). The road was field designed in accordance with Rule 4.03.3. <br /> <br />A light use road will be reestablished over an existing two track road that was originally used to <br />construct the 69 kV powerline on the west side of Taylor Creek back in the 1980’s. The road <br />will depart the Taylor Creek Access Road just below the West Pit Pond and traverse along the <br />toe of the slope down to the west side of the Taylor Pump Holding Pond. The existing road will <br />be reestablished by brushing to allow vehicles to access and conduct maintenance activities of <br />the 69 kV power line, and eventually removal of the power line during reclamation. <br /> <br />4.04 SUPPORT FACILITIES <br /> <br />The support facilities used at the mining operation, including the office, shop and warehouse <br />complex, the coal handling and loadout facilities are shown on the Existing Structures Maps 21, <br />22, and 22A.The complete discussion on all the support facilities is found under Section 2.05.3. <br />Detailed drainage and sediment control has been developed for the mining operation as discussed <br />in Section 2.05.3. All sediment control measures have been designed to prevent damage to wildlife <br />and other related environmental values; also, sediment control structures have been designed to <br />prevent contributions of suspended solids to runoff outside the permit area in excess of the <br />limitations of both federal and state law. <br /> <br />There are no operating oil or gas wells at or around the planned mine; likewise, there is no coal <br />slurry pipeline planned or around the mining area. The only operating railroad in the vicinity of <br />the mine is the Colowyo spur line that serves the operation. All White River Electric power lines <br />are located out of the actual mining area. Colorado-Ute Electric Association has a power line in <br />the path of future mining. Portions of this line will be relocated as required. The Mountain Bell <br />telephone lines are located at a distance from the actual mining areas. All water and sewer lines <br />located in the permit area serve the Colowyo structures and are located away from the actual <br />mining areas. <br />