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RECLAMATION CONDITIONS <br />Several options are available for creation of a stable (Factors <br />of Safety greater than 1.3) reclaimed slope. These options <br />consist of <br />o Option 1 - Backfill against the highwall at the mine <br />portal with slopes of 27 degrees or less. <br />o Option 2 - Partial backfill against the lower portions <br />of the highwall to contain rock fall and minor <br />regrading of upslope colluvial material. <br />o Option 3 - Partial backfill against the lower portions <br />of the highwall with surface stabilization and <br />mechanical support of the rock in the upper portions of <br />the highwall. <br />In all cases the existing bench fill area below the portal bench <br />will be regraded to a slope of 25 degrees or less with <br />utilization of a cut and fill balance approach. <br />~. Q,ption 1 <br />' Option 1, which is characterized by compacted fill against <br />' the highwall at slopes of 27 degrees or less, has been shown to <br />be stable (Factors of Safety greater than or equal to 1.3). <br />~ Information on the stability conditions of this option are <br />presented in the stability/sensitivity section and shown <br />graphically on Figure 5. The total fill required for this option <br />was estimated to be: <br />0 40,000 cubic yards for the bench area, and <br />0 20,000 and 19,700 cubic yards for excavation and fill <br />volumes, respectively, below the bench area. <br />11 <br />