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~1 ' EXHIBIT C: MINING PLAN Excavation is a pit run hill top removal operation. Excavation will typically involve the use of front end loaders and haul trucks. Screening is not anticipated but included as a possible use. No other processing or water use is planned. Changes in processing methodology will be applied for vis technical revision with the CMLRD. ' Overburden and material stockpiles will occur on the previously affected lands on the northeast portion of the permit area. Overburden will be utilized for reclamation of previously affected areas, and as a base prior to soiling on virgin areas to be reclaimed. This will assure a ' more adequate base for regrowth on affected lands. The operator will endeavor to establish 6 to 12 inches of overburden prior to recoiling. Overburden depth of 3 to 10 feet exists over the permit area. The depth ' of the deposit is variable at approximately 10 feet in depth. Soil and subse9uent vegetated areas will be affected in approximate one ' acre units to optimize site stability. Soil will be salvage to the B2t horizon as a maximum, but not less than the A horizon as a minimum, resulting in salvageable soil depth of 4 to 8 inches or more, where possible. Areas lacking viable soil resources will be identified in the forthcoming aerial photograph. Salvaged soil will be located along the permit boundary closest to the area of removal. Overburden stockpiles will be kept separated from soil stockpiles, and located on areas already affected, or subsequently excavated. All stockpiles will be stablilized with the following seed mixture: Crested wheatgrass ® 5.0 #plslacre - drilled Smooth brome @ 6.5 #pls/acre - drilled. Stockpiles will be flat on top with 3h:ly sideslopes. Stockpiles will be located as parallel to the prevailing winds as possible to minimize wind born loss. All stockpiles will be mulched and the mulch netted or ' crimped following seeding. Fertilization rates for ttated stockpiles will be based upon soil test results at the CSU soil laboratory in Fort Collins, Co. Weeds will be controlled mechanically by mowing. If the weeds are too low in profile, herbicides will 6e applied under manufacturer and state requirements. Regardless, the efforts at weed control will occur mainly in the spring and early summer to minimize weed growth from reaching maturity. Grading will be concurrent with excavation resulting in a near level pit floor draining slightly to the east. Since the area of excavation will not completely level the hill top, backslopes at the south end of the permit area will not exceed 3h:ly, and will be flatter if possible to facilitate site revegetation and recovery. Excavation will progress from the north and east boundaries, and move toward the south and west boundaries of the permit. The intent of the operation is to expand into a 112 permit prior to the two year limitation, but not before 1/1/89. The operator requests that the two year limitation to conversion to a 112 be waived as part of this ' approval, having clearly stated the intent up front.