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1 <br /> • 16. Phase I Area-How does the operator plan on disposing of the relic processing <br /> plant near the Quonset but along with permanent conveyor belt features? For <br /> bonding purposes, the volume of material will have to be provided. <br /> ➢ Response: <br /> ✓ Quonset Building will remain for future use as a shop for the water project. <br /> ✓ All plant and conveyor parts have been removed from the site. <br /> • 17. Phase 1 Area— What is the estimated volume of material needed to backfill the <br /> slopes of the dewatered pit area to a 3:1 slope? <br /> ➢ Response: <br /> ✓ Phase 1 Reclamation Cost Estimate: <br /> ❖ Following is an estimate of the amount of material necessary to construct <br /> 3:1 slope in Phase 1. In calculating the amount of backfill material <br /> needed, certain assumptions are necessary: <br /> ❖ Assumptions: <br /> o The average depth of the pit is 34 feet (Taken from 1-31-2007, <br /> Exhibit F-2 Reclamation Final Land Use Map), equals a vertical fill <br /> of 34 feet with a horizontal leg of 102 feet. <br /> o The average elevation across Phase 1 pit is 4604 MSL. <br /> o The slope around the perimeter of the pit represents %Z (34x102) _ <br /> 1,734 square feet per lineal foot of perimeter. <br /> o Calculating the estimated volume is (1734 sf x 70001f)= 449,555 cys <br /> 27cf/cy <br /> o Estimated slope fill needed is 450,000 cys <br /> o Estimated backfill available in Phase 1: <br /> o In the north east portion of the Phase 1 Pit are wash fines from the <br /> sand and gravel processing area. An estimate of the volume of cut <br /> material available for backfill is: <br /> 0 12 acres x 43,560 x 34 feet deep = 658,240 cys available. <br /> 27 cf/cy <br /> • 18. Phase 1 Area—It is unclear what Drawing is being referenced in the description <br /> of the Phase 1 Area reclamation. <br /> ➢ Response: <br /> ✓ Please see Reclamation Plan new map F-1 <br /> • 19. Phase 1 Area—If there is insufficient material in the northwest area of Phase I <br /> to grade the slopes to a 3:1 what other sources of material are available for <br /> bacVill?If other sources of material is needed please provide details. <br /> ➢ Response: <br /> ✓ Calculations indicate 450,000 cys are needed to complete the 3:1 slopes in <br /> Phase 1. <br /> 15 <br />