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n <br />• • <br />EXHIBIT C <br />MINE PLAN <br />The proposal calls for the establishment of a soil and gravel borrow area. Material removed <br />from the property will be use in widening US Highway 50 to four lanes. The project will <br />begin at the end of the recently completed section near the intersection with State Highway <br />141 and terminate a short distance east of Bean Ranch Road. Exhibit E depicts the <br />proposed permit boundary, extraction areas, site features, and the location of other uses <br />ancillary to the operation. <br />Operations within the borrow area will typically be limited to the hours of 6:00 A.M. to 7:00 <br />P.M. and will occur constantly until the excavation and embankment activities for the <br />highway are complete. <br />BORROW AREA -Excavation of the soil and gravel will begin in the summer of 1999 near <br />the east end of the proposed borrow area and proceed toward the west. Approximately <br />15 acres of the permit boundary is identified for use as a borrow source. The maximum <br />area disturbed at any one time be 21 acres. A 6 month removal period followed by a one <br />year reclamation period is considered to be a reasonable forecasted life expectancy of <br />the operation. <br />Preliminary excavations within the identified extraction area have shown the nature of the <br />deposit. An 10 to 15 foot thick silty clay loam soil layer is overlain with 6 to 8 inches of <br />topsoil. Exploration activities indicate evidence of rock cobble in the area near Kannah <br />Creek. <br />When the extraction process begins, the first step of the will be topsoil removal. The 6 <br />inches to 8 inches of top soil will be removed from the extraction area. The topsoil will be <br />removed using scrapers, loaders and dump trucks and stored in stockpiles along the <br />perimeter of the identified extraction area. These stockpiles will also serve as a barrier to <br />contain any storm water which may be generated from the disturbed areas. All of the <br />stockpiled topsoil will ultimately be used in the reclamation process. In the event that the <br />stockpiles remain undisturbed longer than 12 months they will be seeded to prevent <br />erosion. <br />Once the topsoil has been removed from the mining area, the borrow removal will begin. <br />As was the case with the topsoil removal, the underlying soil layers will be excavated using <br />scrapers, loaders, and dump trucks to an average depth between 12 and 15 feet. In order <br />to maintain the quality of any surface storm water which crosses any exposed ground <br />areas a Storm Water Management Plan has been prepared. A key element of the plan <br />calls for grading the area in a manner that will not allow the discharge of any silt laden <br />storm water from the property in the event of a storm. Changes in the historic drainage <br />patterns will not occur as a result of the extraction process. If during the extraction process <br />Rev. 8/2/99 <br />