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iii iiiiiiiiiiiiiiii~ <br />999 <br />1976 by widening the road, improving the gradient (Exhibit 3.5-19), <br />constructing ditches and replacing or adding culverts. The northern access <br />road connects the shop area with the county road. This road has been <br />upgraded in previous years to ensure that it was a sound and stable road <br />with no excess grades (Exhibit 3.5-8 and 3.5-10). Part of this road will <br />be constructed (Exhibit 3.5-8) when mining the Moffat Area. The Old Tipple <br />Road connects the lower office area with the county road to the north. <br />This road is used only when the main entrance is blocked during train <br />loading. Should the road require upgrading, it will be rebuilt to the <br />profile shown in Exhibit 3.5-20. The access road from the office to the <br />shop area, called the Goat Trail, was designed so as to maintain a 7 <br />percent grade (Exhibit 3.5-13). The Goat Trail at the Edna Mine is a pre- <br />SMCRA road that is essential to the operation for access to the conveyor <br />system (also pre-SMCRA) which is used to transport coal from the hopper to <br />the tipple facility. Due to the Goat Trails initial configuration and the <br />steepness (30 - 70 degrees from hori2ontal) of the hillside upon which it <br />was constructed, alternative design criteria and specifications have been <br />implemented in accordance with Rule 4.03.2(1)(e) to meet current <br />performance standards regarding access road construction and drainage <br />control (see Appendix 3.5-F). As such, drainage from the road is <br />controlled by a series of ditches, road construction methods (see Section <br />3.5.9 and Appendix 3.5-F) and culverts to ensure runoff from disturbed <br />areas is directed towards sediment ponds for treatment prior to release. <br />Exhibit 4.6-21 shows the drainage areas, culverts and flow paths for <br />handling drainage from the road and the conveyor belt system. Undisturbed <br />drainage on the south side of the Goat Trail is also captured by the road <br />drainage system. The undisturbed drainage is carried along portions of the <br />ditch system and released at the outside bend of south switch-back turns. <br />To minimize erosion at the road ditch run-out points at south switch-back <br />turns (undisturbed drainage) and north switch-back turns (runoff from <br />disturbed areas), loose rock filters will be maintained in the run-out <br />channels to reduce water velocity. Exhibit 3.6-3 shows the locations of <br />the loose rock filters and runout channels. <br />There are three haulroads now in use at Edna Mine (Exhibit 3.5-1, <br />Sheet 1). The haulroad from the shop area to Center Ridge was constructed <br />3.6-3 May 14, 1993 <br />