2013-01-29_PERMIT FILE - C1981022A (3)

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Section - 2.05.3 The first segment of the Elk Creek haul road will extend from the point where the West Valley haul road connects to the Elk Creek road approximately 400 feet to the toe of the lower Elk Creek Mine portal bench. This segment of the road will provide full access to the Elk. Creek Mine for haulage of coal, coal refuse, mine development waste, men, equipment, and supplies. This section of the road will be constructed as a cut-fill road along the alignment of the existing road with an average grade of approximately 11 percent. The second segment of the Elk Creek haul road flattens slightly beginning from the north end of the first road segment and extending approximately 300 feet to another steeper road segment. Similar to the first road segment, this ramp is designed to provide full access to the lower portal bench. The access ramp will be constructed almost exclusively on fill at a grade of approximately 9 percent. The third segment of the Elk Creek haul road includes an initial short (200 foot), relatively steep segment and then flattens along the top of the Elk Creek Mine portal bench. This segment will begin at the top of segment 2 and run approximately 545 feet, ending in the open yard area around the Elk Creek Mine portals. The third road segment will be constructed exclusively on the portal fill bench with an average grade of approximately 8 percent. Drainage control for the Elk Creek haul road will consist of roadside ditches, cross-culverts, alternative sediment control structures, and runoff collection ditches that will intercept and route a portion of the drainage to Sedimentation Pond D.. Drainage control for the upper portion of the road (second and third segments) will be provided by the drainage and sediment control structures for the Elk Creek Mine portal bench including collection ditches, berms, and alternative sediment control structures. Roadside ditches, culverts, and alternative sediment controls will provide drainage control for the lower portions of the road (first segment). A culvert crossing will be constructed under the third segment of the road, with a 9-foot diameter steel culvert providing sufficient capacity to safely pass the flows from the 100-year, 24-hour storm event with a significant margin of excess flow capacity. Drainage design details are provided in Exhibit 2.05-E3, Drainage and Sediment Control Plan. Upper Elk Creek Access Road -The upper Elk Creek access road will run between and connect the upper and lower Elk Creek Mine portal benches. This road will be constructed almost entirely on fill and will be approximately 30 feet wide, providing for two-way traffic. Road fill outslopes will be up to 1.5H:1V and the road will be constructed to the same specifications as the Elk Creek haul road. Drainage control will be provided by roadside collection ditches as part of the Elk Creek Mine surface facilities drainage control network with flow from the road surface being routed to Pond D. Road outslopes have been designated as SAE's and will be stabilized by hydro-seeding and hydro-mulching the outslope areas. Lower Elk Creek Access Road - The Lower Elk Creek access road will run between the first segment of the Elk Creek haul road and the existing coal stockpile on the east side of Sedimentation Pond D. This road will be constructed along the alignment of the existing Elk Creek road and will require minimal road construction/modification. Drainage control will be provided by roadside collection ditches. Use of this road will be limited to general access for the north end of the coal stockpile and Sedimentation Pond D. Bear Creek Canyon Road - The Bear Creek Canyon road is an improved public access dirt road. OMLLC previously used this road to access the Bear Creek ventilation shaft and fan installation and did not improve or modify the road. These Bear Canyon facilities have been reclaimed, this road is no longer used in conjunction with mining-related activities except to periodically check the condition of reclaimed areas, hydrologic monitoring and coal exploration. BLM has issued to OMLLC permits COC-41183 and COC-66643 for use of the public lands along Bear Creek. (See Exhibit 2.03-E1). Current use is public access by private landowners, gas development, grazing and hunting leases for lands to the north. In 2009 the Bear Creek Fan and shaft will be installed to ventilate the D seam workings. During Oxbow's use of the road to build the Bear Creek Fansite Facility and GVB R,opmve! 15 Jug 2W7 TR-63 2.05-29a Revised June 2009