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Black Obsidian Pit—Permit M-1987-026 <br /> 112c Conversion Application <br /> Rule 6.4.12 <br /> Exhibit L <br /> Reclamation Costs <br /> Phase I—Reclamation Overview <br /> The mining plan of this site is to create the bench and highwall pit configuration as mining progresses, <br /> and to carry out as much early-stage concurrent reclamation of the site as possible, by shaping and <br /> revegetating all surfaces that are in their final configuration. <br /> This pit is mined based on demand. Obsidian that is blasted from the highwalls is moved to the pit floor <br /> for processing and removal from the site. There will be extremely minimal backfilling of obsidian or <br /> overburden anticipated during final reclamation earthmoving. <br /> Most overburden will be utilized permanently as fills for pads, or placed in permanent disposal cells. <br /> Most of this will be carried out well before the end of Phase I mining. A small amount of overburden will <br /> be needed at the end of Phase I mining to plate the pit benches. <br /> A small amount of topsoil will be retained in stockpiles for placement on the pit benches, and (after <br /> removal of product stockpiles and equipment) on the pads. <br /> Revegetation needed at the conclusion of mining will be limited to pit benches, pad areas, and footprints <br /> of the last temporary stockpile areas for overburden and topsoil. <br /> Stormwater berms, sediment ponds, drainage structures, and roadways will be permanent and will not <br /> require earthmoving during final reclamation. <br /> Phase I—Reclamation Costs <br /> Reclamation equipment likely to be used: <br /> Cat D8T Dozer(or similar) with semi-universal blade and 3-shank ripper <br /> Cat 950M Loader(or similar) <br /> Dump trucks(2), 10cuyd <br /> Ag tractor, 15HP, with disc; drill seeder <br /> 4x4 ATV with broadcast seeder; weed spray attachment <br /> Equipment to be mobilized from Salida, 50 miles <br /> Reclamation Tasks Unit Cost Qty Units Total <br /> Debris Removal: <br /> Assume 20 cu yds, non-contaminant, normal disposal <br /> Machine load and haul to nearest licensed landfill $13/cy 20 cy 260.00 <br /> Earthmoving, Hauling,and Ripping: <br /> Operations Pad (Pit Floor) and Explosives Area <br />