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2~6 Roads and Utilities <br /> 2.6.1 Roads <br /> The proposed Upper Pit expansion area would be accessed using approximately 1.32rni|es of <br /> existing access roads (starting at the Mine entrance |0C@don shown on Drawing 03). Roads were <br /> cleared of vegetation before construction. Juniper and pinion trees removed during vegetation <br /> clearing were stockpiled outside the construction area for use in future reclamation. Roads were <br /> constructed using cut-to-fill methods,with a 50-foot wide road to accommodate two lanes of traffic <br /> with safety berms and side drainage ditches. Culverts were installed where the road crossed <br /> drainages. Haul roads will be reclaimed as described in existing permits (CO DRMS, 2001; BLM, <br /> 2OO2\. <br /> The 1.32 miles of existing n)gdS used to access the proposed Upper Pit expansion area includes <br /> approximately D.U0 miles nf the approved Upper Pit OSOO Access Road (BLK4. 2018; C(] DFlW4S. <br /> 2019e). AS the Upper Pit progresses past 8 pit floor elevation of 0900haet anom|, e second road <br /> (approximately 0.08 nni|e8 long) vvOu|d be constructed utilizing the partially reclaimed northern <br /> section of the Upper Pit and the southern section of the Upper Pit 8900 Access Road vvOu|d be <br /> abandoned.As the Upper Pit depth increases, interior roads would be incorporated into the Upper <br /> Pit to continue accessing the lower portions of the Upper Pit. Drawing 18 shows the conceptual <br /> road configuration. Interior roads would be developed as the pit is developed and are not shown <br /> on the ultimate pit configuration shown on Drawings OOand 07; the conceptual internal Upper Pit <br /> road configuration may he modified during operations but would be constructed within permitted <br /> disturbance areas. <br /> The East Pit would also be accessed vie approximately 1.32 miles of existing access roods, <br /> 0.8nni|ea of the new Upper Pit 0900 Access Rood, extending east across the Upper Pit and <br /> existing intnabunden storage, and @ppnDxinnoie|yO.2 miles of road within a new disturbance area <br /> before terminating at the East Pit. Another 0.28 miles of the new East Pit Access Road would be <br /> constructed within the East Pit footprint and vvOu}d be removed as the East Pit is mined, leaving <br /> only 0.02 miles of the road within areas previously undisturbed (excluding the East Pit disturbance <br /> area). <br /> All new roads vvDu|d be 50 feet wide (including safety barnnS). with 1.5H:1V cut and fill slopes to <br /> tie into existing topography(using cut-to-fill methods where possible and utilizing inert intraburden <br /> for the remaining fill). Roads vvou|U have o noaxinnurn 896 longitudinal grade and would be graded <br /> with a high point in the center (crown) of the road (at 1.0%) so otonnvveter runs off the road. <br /> Culverts vvOu|d be installed where the rood fill crosses drainages (culvert details are 9hOvvn on <br /> Drawing 10). Finished road fill slopes (that are not intended to see traffic) Would be track-walked <br /> and novegetated immediately after construction or as soon as weather allows using an approved <br /> seed mixture. <br /> The Upper Pit/East Pit Access Road construction would require approxirnate|y536.00O cubic <br /> yards of Cu[ and 1.415 million cubic yards of fill. An additional 163,000 cubic yards of material <br /> vvOu|d be removed from the Upper Pit OSOO Access Rood /BLM. 2019; CO DFlIVIS. 2018a\ to <br /> accommodate the increased Upper Pit footprint and used as fill material for road construction or <br /> bockfil| for progressive reclamation activities. The remaining 716.000cubic yards of fill required <br /> 1'7 <br />