1999-09-01_REVISION - M1988112 - Laserfiche WebLink

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i ~ slope adjustment. The 26 acres associated with the West Pit and Pink Gneiss Pit reclaimed surface have been left as remaining obligated since such activities as the West Pit evaporation system remain in place and may require some amount of regrading and topsoil placement. Backfill area = 26 acres $257/acre (26 acres) _ $6,682 TOTAL WEST PIT WASTE ROCK GRADING COSTS REMAINING RECLAMATION COST OBLIGATION $6,682 ~~ B.2.4 Topsoil Replacement and Grading Backfill azea = 26 acres Topsoil replacement costs (A.2) _ $2,310 Topsoil grading costs (A.3) _ $257 ($2,310/acre + $257/acre) 26 acres) _ $66,742 TOTAL WEST PIT TOPSOIL REPLACEMENT AND GRADING COSTS REMAINING RECLAMATION COST OBLIGATION $66,742 B.3 West Pit Evaporation System Dismantling and Reclamation A mechanical evaporation system was constructed in 1999 to manage Nest Pit water. The system consists of approximately 12 acres of geomembrane lined surface area along the West Pit reclaimed surface which acts to collect and divert unevapora[ed water back to a lined staging pond which facilitates recirculation of the water back to the mechanical evaporation system. System surface cisturbance is included in the re-grading and topsoil cost estimates presented above with the West Pit. Obligated reclamation costs are associated with the Wes[ Pit evaporation system dismantling and removal of the electrical supply installations, the geomembrane liner material, supply pumps, supply piping, concrete foundations, mechanical evaporative equipment, and wildlife fencing. Shepherd Miller Inc. estimated this cost to be $60,000 TOTAL WEST PIT EVAPORATIVE SYSTEM RECLAMATION COST '~~ p~~ ``~~ REMAINING RECLAMATION COST OBLIGATION -$60,09@- TOTAL EAST AND WEST P[T REMAINING RECLAMATION OBLIGATION .$5-93;4-+- / PRELIMINARY DRAFT FOR DISCUSSION PURPOSES ONLY