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Ste- 2.05.3 133. This road is approximately 120 feet long, 10 feet wide, and includes a culvert • crossing of the mad ditch along the old State I-Pghway OMI obtained a highway access pemtit from the Colorado Department of I~ighways for this connecting road and the associated conjwction. D. Powerline and Exploration Roads -There are a number of existing powerline and exploration roads within the mine pemut area which were established to provide access for powerline conjwction and exploration drilling prior to 1976, Most of these roads were either never reclaimed or have been retained for powerline inspection and maintenance by Delta-Monvose Electric Association, az the local electric utility and all are classified azlight-use roads. The only existing powerline road ctrrrentlyutilized for mining-related purposes is the light-use road along the power transmission line that extends from Elk Creek to Hubbard Geek This road, which was constructed in conjunttion with installation of the powerline prior to 1976, is approximately 6.3 miles long. The road haz been used for access to exploration drillsites and is now used occazionally (primarily by AT'l~ for inspection and monitoring of upland areaz, in addition to powerline inspection and maintenance. Because it traverses some extremely rugged terrain, much of the road exceeds 10 percent grade and portions Gave pitch grades of over 20 percent. This road a currently stable, no modifications to the road are planned, and maintenance will be limited to repair of any significant erosion or slides and minor grading az necessary to maintain access. This road includes a stream ford crossing of Bear Creek, located above the point that the Somerset Mme previously discharged water to Bear Geek • Three new segmenu of light-use road totaling approximately 3,100 feet have been constructed from existing powerline access and drill roads to access new power pole locations for relocation of existing powerlines. These new road segmenu were reseeded on completion of powerline relocation to control erosion but will remain for long-terrtt powerline access. E. Degazsification Well Roads -Existing public access roads and powerline and exploration roads may be used to access degassification borehole sites. Minor road improvemenu such as grading and widening (to a maximum width of 20-fee[) in certain areas have been completed az necessary to provide for drill and equipment access dependent on existing road conditions. In addition, some borehole sites have fallen beyond the limits of existing roads, requiring conswttion of short connecting roads up to 800 feet long. Any road improvemenu have been limited and are consistent with the temporary light-use designation for these roads. These roads were utilized for initial site development and continue to be utilized for ongoing site inspettion and maintenance so long az the degazsification installations are in attive use. F. Elk Creek Light-Use Road -The Elk Creek light-use toad will be developed by upgrading the existing light-use exploration road running to the southwest on the west side of Elk Creek and emending it to the natural cliff at the top of the slope stabilization area. The existing road u partially cut-off by the existing natural landslide in this area. The road will initially be reestablished and extended and used in conjunction with slope stabilization activities for movement of surficial slide • material downslope to construct the Elk Creek Mine facilities portal bench and road and for access to conswc[ the upper rock catch bench. Following construction, the road will be retained for inspection and maintenance of the slope stabilization area, maintenance of the rock catch bench, and az a safety feature. The light-use road and associated catch bench will be constructed so that they slope into the hill at 15 PR04 2.05-31 Revised May 2001