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Section - 2.05.3 primary fuel source and propane as the back-up fuel source for start-up and initial well pressurization. Any excess methane not utilized to fuel the degassification pump is vented or flared-off at a safe location near the wellhead. The degassification installations continue to operate so long as needed to prevent or minimize seepage of methane from the abandoned mine workings into active working areas. The degassification installations are inspected on a periodic basis and the light-use road and operating equipment are maintained as necessary to assure continued effective operation. When [he degassification installations are no longer required, surface facilities and equipment will be removed and associated surface disturbance areas will be reclaimed as described in the reclamation plan section. It should, however, be noted that the light-use roads utilized to access the borehole sites, may incorporate existing unimproved public roads and may be retained. Elk Creek Mine Facilities -See the General Facilities Map, (Map 2.05-M I ), and the Facilities Detail Maps, (Map series 2.05-M3x). .~. Elk Creek Canyon Haul Road, Access Road, and Light Use Road -The Elk Creek Canyon road is a pre-law road extending from the main haul road up Elk Creek Canyon. Expansion of [he Elk Creek coal stockpile cut-o(f direct access to the lower portion of the Elk Creek Canyon road. Access was reestablished via the West Valley haul road and a short segment of light-use road extending from the Cemetery up the west side of Elk Creek Canyon. In conjunction with construction and development of the Elk Creek Mine this light-use road and the middle portion o(the existing Elk Creek Canyon road will be upgraded as a haul road to access the Elk Creek Mine facilities. The Elk Creek haul road will extend from the point where the West Valley haul road connects with the existing Elk Creek road to the lower Elk Creek Mine portal bench. Both the lower and upper portal benches will be open yard areas. The Elk Creek access road will run between and connect the upper and lower portal benches. At the northwest corner of the upper portal bench, the existing exploration road will be upgraded and utilized as a light-use road to provide access for inspection and maintenance of the slope stabilization area. Additional detail on these roads are provided in Section 2.05.3(3). B. Elk Creek Culvert -Approximately 1,450 feet of the lower portion of Elk Creek has been culverted to minimize mining-related hydrologic impacts and facilitate development of required mine support facilities for this portion of the Elk Creek channel. OMi will temporarily culvert two segments totaling approximately 1,600 feet of Elk Creek in the middle portion of Elk Creek where the upper and lower portal benches would encroach on the existing stream channel. Stream culverting is designed to minimize mining-related impacts and accommodate construction of the required roads and portal benches for the Elk Creek Mine. Additional details on the culvert installations are provided in Section 2.05.3(4). C. Portal Benches and Roads - In order to provide adequate room for and access to the surface facilities required for the Elk Creek Mine, an upper and lover portal bench and connecting roads will be established in the bottom of Elk Creek. The portal benches and road will vary in width from approximately 50 to 220 feet and will extend approzimately 2,200 feet along the canyon bottom. Elk Creek will be culverted at two locations through this area as noted in the previous section. / Available soil material will be recovered from the canyon bottom prior to initiation of ,V// cut and fill activities. Soil depths are expected to vary in the canyon bottom, with an average soil recovery depth of 14 inches- antiapated. ODII will recover all available recoverable and suitable soils to a maximum depth of 4 feet. In addition to soil materials relocated TR-32 2.05-23 Revised btay 2000