GENERAL39774 - Laserfiche WebLink

Home Browse Search

miner has been dismantled and demobilized from the Yoast Mine and will no longer be utilized. In accordance with the approved variance, backfilling and grading was to be completed in 2006 following completion of highwall mining. Since mining has ceased in this location, SCC is reevaluating the backfill and grading schedule for this location and has submitted an additional variance request for this area with Permit Revision No. 2. SCC is proposing to conduct final backfilling and grading of the final pit containing the access and associated spoil azea in 2006. Permit Revision No. 2 is pending review and approval by the Division. SCC will utilize the backfilling and grading sequence shown on Exhibit 19-1A, Backfilling and Grading Plan, and the associated reclamation schedule to achieve the postmine topography presented on Exhibit 20-2 of the permit application package. Any potentially acid-or toxic-forming spoil material will be identified by sampling regraded spoil, and will be chemically treated or buried with a minimum of four feet of topsoil. By neutralizing and/or isolating any acid- ortoxic-forming material from the surface, and mixing limited quantities of such material with much greater volumes of benign spoil material, any negative effects of problematic material will be ameliorated. 2. The Division proposes to approve the applicant's plan for disposal of debris, acid-forming or toxic materials, or materials constituting a fire hazard in a manner designed to prevent contamination of ground or surface waters. A contingency plan has also been developed to prevent sustained combustion of flammable materials. (4.14.3(1)(a)). The Division proposes to approve the method and design specifications for covering of acid-and toxic-forming materials in order to prevent leaching into surface and ground water and to insure backfill stability. ((4.143(2)). VIII. Revegetation Information pertaining to revegetation at the Yoast Mine is found in Tabs 10, 19, and 22 of the permit application package. Five major vegetation community types occur within the proposed Yoast permit azea. These major vegetation community types aze: Mountain Brush, Sagebrush, Aspen, Steep Mountain Brush, and Western Wheatgrass/Alkali Sagebrush. Additional community types occur within the proposed permit azea but at considerably smaller acreages. These additional vegetation types include: Upland and improved subirrigated pasture, Mesic drainage, lands in the Conservation Reserve Program, Yoast Mine 33 August 3, 2005