2022-03-10_REVISION - C1981044 - Laserfiche WebLink

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Area-Specific Reclamation Plans The following discussions detail site-specific reclamation plans and reclamation status for distinct mine areas: • No. 5 Portal Area • No. 5A Portal Area • Coal Storage/Loading Silo • Overland Conveyor • No. 9 Portal Area • Waste Disposal Site (approved) • No. 5 and No. 6 Mine Water Handling Systems • Wastewater Treatment Facility • Fresh Water System • Red Rock Crusher • Old Shop Area(Empire Village) • Utah Tract • Miscellaneous Areas • Multi Service Building • Solid Waste Disposal Area No. 5 Mine Portal Area The No. 5 Mine Portal Area was initially disturbed in the early 1970's, prior to promulgation of SMCRA. As such, surface facility development and construction did not include salvage of soil materials for later reclamation. This soil material deficiency was addressed by salvaging additional topsoil during subsequent construction of the mine drainage and sediment control system. In addition, up to 24 inches of soil material was salvaged during construction of the shop, wastewater treatment facility, and the No. 5 and No. 6 mine water handling system. Please refer to Table 58, Topsoil Replacement -No. 5 Portal and General Area, for soil replacement volumes. The additional soil material volumes salvaged during these construction activities is summarized in Table 68,No.5 Portal-Recent Topsoil Salvage Volumes. Reclamation of the No. 5 Mine Portal Area will follow the general steps outlined at the beginning of this section, modified as follows. All structures and facilities will be removed from the site. This will include,but not be limited to the removal of railroad tracks, scale-house, coal silo, coal conveying system, rotary breaker, screening plant, reclaim tunnel,all offices,shop/warehouse,laboratory,bathhouses,rock dust tanks,electrical substation,fencing,and the 48-inch overland conveyor, and associated structures. Mobile trailers, including the administration office trailer, which were used as offices have been removed from the site. Any coal remaining in the stack-tube stockpile area will be removed,loaded into trucks,and hauled to the Foidel Creek Mine. Dependent on the nature and extent of ongoing and anticipated future activities, facility removal may be phased, with appropriate facilities remaining in place to support these activities. The value and utility of individual facilities to support ongoing and anticipated future operations or postmining uses will be evaluated prior to demolition and removal, and if appropriate, any request for permanent retention of facilities will be submitted as a revision for CDRMS approval. The No. 5 Mine Portals were permanently sealed in 1996-1998 by placing an MSHA-approved seal in each of the entries, covering any exposed coal seams, and backfilling the portal cut using non-toxic, non-combustible material. The No.5 Mine Substation and Women's and Visitor Bathhouses were also removed and associated disturbance areas reclaimed at this time. The remainder of the No. 5 Portal face-up area was backfilled with excess borrow material from the spur track extension, the adjacent coal stockpile pad area, railcar loading/unloading ramps, and excess material from the No. 9 portal excavation. The backfilled face-up area was sloped at approximately 3H:1 V to assure a stable configuration and blend with the adjacent undisturbed slopes. Trucks and front-end loaders, graders and dozers were used in the backfilling operation. Placement of the backfill material in lifts and equipment traffic during backfilling operations provided for adequate compaction of the fills. Final grading focused on achieving the design postmining topography and left the surface in a roughened condition. MT8 2.05-26 Revised 02/28/22