1999-04-06_PERMIT FILE - M1999040

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r � EXHEBIT C MINING PLAN Rio Blanco County Road and Bridge intend to pursue this proposed gravel pit as a periodic aggregate source for projects in the Rangely area. Access to the site is from that point adjoining Rio Blanco County Road no. 111. Mining operations (crushers, conveyors, dozers and scrapers) will be located in the South most portion of the gravel pit. Storage area for fuels and chemicals shall be bermed and located away from drainage areas. Trees on site will be harvested and stumps to be stockpiled in the Northern most portion of site for utilization in final reclamation. The topsoil will be stripped and stockpiled in the West area of the mine site. This stockpile will accumulate over the life of the pit, but will be re-vegetated within a 90 day time frame. Weeds will be controlled in all disturbed areas and on the entire site. The gravel will be pushed generally from West to East to the mining operations site. All mining and processing operation will be designed to manage storm water runoff, so that no sediments flow to existing drainage. The gravel bed lies under about 6 inches of topsoil. The gravel itself is approximately 40 feet thick. There will be a maximum of 20,000 tons of gravel removed a year. Finished products will be stockpiled on site. A. The estimated date that mining will commence is May]999. Mining is estimated to continue for approximately twenty years. B. The estimated depth of topsoil is 6 inches (see EXHIBIT E — map, for stockpile location) C. The estimated depth of overburden is 0 feet D. The thickness of the gravel deposit to be mined is approximately 40 feet. E. The mining operation facilities will be located in the Southeast area of the site (see EXHIBIT E— map, for the operations location) F. The disturbance area and stockpiles are shown on EXHIBIT E G. The mining operation will use County Road no. 1 1 I with no anticipated new construction to such road.