2023-12-26_REVISION - C1981044 - Laserfiche WebLink

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Page 12 of 27 Cultural and Historic Resources Exhibit 6 of the Williams Fork Mines permit contains the extensive results of cultural and historic resources inventories that were conducted within and the permit area and in portions of the surrounding area. Appropriate mitigation measures were implemented for any significant cultural sites. Operation and Reclamation Plans The operation plan is addressed in detail Permit Section 2.05. The permit application provides detailed information on mining and reclamation operations,transportation routes, and hydrologic controls for the mine. Mining was completed and coal extraction at MCM ceased in early 1995. No additional mining is proposed for the upcoming permit term. Three of the Williams Fork Mines were underground mines,while the Williams Fork Strip Pit No. 2 and the Utah Tract were surface mines. Room-and-pillar and longwall mining methods have been used to extract the coal resource as well as conventional underground techniques. In advance of any mine disturbance,brush was cleared, and topsoil removed and salvaged. Stockpiles were shaped and seeded to establish vegetation and for protection from wind and water erosion. The site is undergoing reclamation and currently facilities include: mine dewatering ponds, sediment control ponds,haul roads, a rail spur,and a shop building. Mine water and surface runoff were handled in a series of ditches and ponds during operation. Williams Fork Mines No. 5 Mine water and No. 6 Mine water was collected in a mine sump and pumped to the surface and pumped into a series of ponds along the Williams Fork River,then discharged into the Williams Fork River. Disturbed area drainage is controlled by ponds, except for those areas where small area exemptions were approved. As ponds do not retain water throughout the year they will be reclaimed, and some will be retained as stock tanks as they hold spring runoff. Roads proposed for retention include the main haul road leading from State Highway 13 to the No. 5 portal; old Highway 13,providing access to the No. 5A portals; and a portion of the road at the Williams Fork Strip Pit. If there is interest from the County, Old Highway 13 may be returned to Moffat County. MCM must provide the documentation as required by Rule 4.03.1(1)(f) and 4.03.2(1)(g)for roads to remain as permanent features. Prior to bond release,MCM must submit this documentation and include it as part of the permit application through a revision. The roads network is shown on Map 29. Upon permanent cessation of mining activities, or when features are no longer required, all surface disturbed lands will be reclaimed to the following three post-mining land uses: rangeland/wildlife habitat, cropland,and pastureland. As of March 2023,all reclamation has been completed at the site. Williams Fork Mines Prepared by: R ReiRey M.S. WSP C1981044 December ly text here