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Estimated ReclamatiollPosts : Table Mountain Quarry (JAPary 1999) <br /> GRAND TOTALS <br /> Backfilling $33,611.11 Ttl area 22.5 acres (in disturbance) <br /> Grading $0.00 Ttl Area 22.5 acres <br /> Topsoiling $21,195.07 (actually reclaimed) <br /> Revegetation $5,306.28 Cost/ac $2,676.56 <br /> GRAND TOTAL = $60,112.46 cost/acre for actually reclaimed Ian <br /> Calculations <br /> Back f illing unfilled highwalls <br /> Worst case assumption: 1600'of highwall with 1:1 slope and 27.5'mean wall height <br /> Total cross-sectional area of 3:1 backfilled highwall = 1134 sq ft <br /> Cross-sectional area of 1:1 portion of highwall not needing backfill = 378 sq It <br /> Cross-sectional area of 3:1 portion of highwall needing backfill = 756 sq It <br /> Length of backwall needing backfill (worst case) = 1600 feet <br /> Total volume of backfill needed to achieve 3:1 slope = 1210000 cu ft <br /> 44,815 cu yds <br /> Fill volume = 44,815 cu yds to bring 1:1 to 3:1 slope <br /> Backfill cost/yd = $0.75 fill is near location to be filled; minimal to no haulage <br /> (cost is low because cost of topsoiling is included in total) <br /> Backfill Cost = $33,611.11 <br /> TOTAL BACKFILL COSTS = $33,611.11 <br /> Notes:this is based on 112 of maximum amount of highwall produced within Stage 1. (max est. = 3200') <br /> Also see Topsoiling of Highwalls below. <br /> Grading <br /> No grading is required on highwalls as backfilling of highwalls will result in grading of slope face <br /> No grading is required on quarry floor because topsoiling will create final grade <br /> Grading cost: $0.00 <br />