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The surface disturbance resulting from construction of the mine water pipeline running from the 6MN Million - Gallon <br />Tank to the 10 -Right Dewatering Pipeline, was reclaimed concurrently with pipeline installation. After placement of <br />the pipeline in the excavated trench, the excavated material was backfilled into the trench and compacted around and <br />over the pipeline, topsoil which had been windrowed to the side of the trench excavation was re- spread over the <br />disturbed area, and disturbed areas were reseeded with the standard rangeland seed mixture. When use of the pipeline <br />is no longer necessary to support ongoing or future mining operations, the pipeline will be plugged and stubbed -off <br />below grade at both ends, and abandoned in- place. <br />18 -Left Ventilation Shaft Installation (TR09 -66) <br />When the 18 -Left Ventilation Shaft, emergency hoist equipment, shaft heater, and MAC borehole(s) are no longer <br />required to support ongoing or future mining operations, the associated surface facilities will be removed, the shaft and <br />borehole will be plugged and sealed, and surface disturbance areas will be reclaimed. The nitrogen injection system <br />equipment is all skid mounted, and will be removed for use at another location. The mine ventilation fan and associated <br />equipment, emergency hoist equipment shaft heater, and electrical equipment will be removed and reused at another <br />location, salvaged, or disposed of off -site. Concrete pads will be broken up and foundations will be demolished to at <br />least 2 feet below grade, and the resulting concrete debris will be disposed of in the shaft opening. The upper 4 feet of <br />the shaft collar and the concrete shaft slab will also be broken up and disposed of into the shaft opening. A cement plug <br />shall be placed in the bottom 15 feet of the shaft and the remainder of the shaft will be filled with inert material <br />including the shaft cuttings and collar excavation materials. A cement plug will be poured from 10 feet below grade to <br />within approximately 3 feet of the surface. The remaining 3 feet will be filled with soil, and graded to blend with the <br />surrounding terrain. As noted on page 2.05 - 45.61, any required pressure —grout boreholes will be sealed at the time <br />of construction. Cement grout will be pumped through the boreholes to seal any wet zones encountered and the <br />boreholes will be filled with grout and allowed to set -up on completion of grouting operations. Any surface casing <br />extending above ground surface would be cut -off flush with or below natural ground level. The MAC borehole will <br />be plugged and sealed using the same methods as previously described for the shaft seal. <br />Following removal of structures and equipment, and plugging and sealing of the shaft and borehole(s); any cuttings <br />remaining in the temporary mine waste disposal pit will be covered with excavated shaft collar material; road culverts <br />will be removed and disposed of off -site; road -base and surfacing materials will be removed and placed on the shaft <br />pad; and the shaft pad, substation area, sedimentation pond, and light -use road disturbance areas will be regraded to <br />reestablish effective drainage and blend with the surrounding terrain. Cover over any cuttings remaining in the cuttings <br />pit will be a minimum of 2 feet of suitable material, and the postmining configuration will approximate the premining <br />contours. As -built certification will be provided to the CDMG following final closure, backfilling, and grading of <br />the cuttings pit. Any excess road -base and surfacing materials not required to reestablish approximate original contour <br />will be hauled off -site and disposed of. Stockpiled topsoil will then be replaced on those disturbed areas where it was <br />previously removed and seeded with a pastureland seed mixture. <br />Truck Loadout <br />When the Truck Loadout is no longer needed to support coal transport operations, it will be removed and the associated <br />disturbance areas reclaimed. Reclamation will involve removal of all loadout and conveyor structures and equipment; <br />demolition of the Truck Loadout Building and associated foundations, conveyor bent foundations, and the coal reclaim <br />and escape tunnels; removal of culverts, regrading and reestablishment of drainage; soil material replacement; and <br />revegetation. Equipment and scrap steel resulting from building and tunnel demolition will be loaded and hauled off - <br />site for reuse, salvage, or disposal. Concrete slabs, foundations, support piers, and caissons will be broken -up to at least <br />one -foot below grade and the resulting concrete demolition debris will be disposed of in either the mine portal area or <br />the reclaim tunnel excavation. Given that it will be well below the design reclaimed surface, the concrete feed bunker <br />will be collapsed and buried in- place. Culverts will be removed, the reclaim tunnel will be backfilled, and stockpile and <br />facilities areas will be regraded consistent with the design postmining topography to a stable configuration which <br />blends with the surrounding terrain and promotes effective through drainage. Given that the Truck Loadout area was <br />previously disturbed, any stockpiled topsoil salvaged during the original disturbance activities will be replaced, and the <br />area will be reseeded with the pastureland seed mixture. <br />TR09 -66 2.05-106.1 02/17/09 <br />