2018-06-05_PERMIT FILE - C1981019A (7)

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RULE 4 PERFORMANCE STANDARDS 4.03.2 Access Roads Information related to the Sturgeon Access Road can be found in Volume 12, Section 4.03.2. 4.03.3 Light -Use Roads The location of light -use roads will be determined on the basis of the progress of the mining operation and specific design and environmental considerations. Typical light -use roads will be "access" roads of recent construction in the pit areas for blasting and maintenance, exploration roads, and reclamation access roads. Light -use roads, whether in the pit or other areas, will be constructed using the best technology currently available, to the extent possible, to avoid damage to fish, wildlife, and related environmental values and to prevent additional contribution of suspended solids to runoff outside the permit area. Roads in the pit areas will be constructed on an already disturbed material. Reclamation access roads and exploration roads will be restored immediately after they are no longer needed. Information contained in Section 2.05.6 reveals that no fish and wildlife damage will result from mining operations, including the construction or operation of light -use roads. The light -use roads will be used by pick-ups, light-duty service trucks, track -mounted overburden drilling rigs and tractors. The location of the light -use roads will be determined largely by the immediate need of the mining operations. They will not be located in the channel of any major drainage unless specifically approved by the Division. Light -use road construction will generally require no topsoil removal. Roads in pit areas will already have been pre -stripped of topsoil for mining and the construction of exploration roads will only require removal of any large vegetation. Light -use road maintenance will include maintaining natural drainages across the roadway and periodic dozing to remove loose material which might contribute to sedimentation or road instability. A number of light use roads (See Maps 21 and 22) consist of pre-existing ranch roads which existed prior to mining activities and will be left in place after mining activities have ceased and, as such, they will not be reclaimed. Colowyo intends to infrequently travel or use such roads, with the main usage being pond monitoring and maintenance, sediment control ditch monitoring and maintenance, groundwater monitor well access, meteorological/air monitoring station access, etc. Examples of such light use roads include, but are not limited to, roads to the West Pit, East Taylor, Gulch A and Prospect Ponds, access to the south collection ditch, etc. During minor revision 80 a light -use road was permitted to facilitate shorter equipment movements to additional areas of the northern end of the mine. This light -use road begins south of the fuel storage tanks and continues in a northwest direction towards the main coal haulage road with an approximate width of 30 feet and a length of approximately 1200 feet. It enters the main coal haulage road just below the traffic pattern crossover. Topsoil was stripped in accordance with Rule 4.06.2 and placed on topsoil pile 15A directly to the west of the road. Maintenance will include maintaining natural drainage across the roadway and maintenance of a swale on the northern portion of the road which will transfer runoff to the existing ditch. Reclamation of this light -use road will be completed immediately after the road is no longer needed for operations and will be reclaimed in accordance with Rule 4.03.3(7). The road was field designed in accordance with Rule 4.03.3. Rule 4 Performance Standards 4-5 Revision Date: 1/31/18 Revision No.: TR -119