Laserfiche WebLink
Estimated Reclamation Costs :Table Mountain Quarry (Revised 4 22 03) <br />(Revised on April 22, 2003 for less backwall with 2000' limitation) <br /> GRAND TOTALS <br />Backfilling $52,493.06 Ttl area 31.2 acres (in disturbance) <br />Grading $0.00 7.0 acres (other areas) <br />Topsoiling $29,371.65 <br />Revegetation $6,879.22 Cost/ac $3,038.69 <br />Tota{ direct costs: $88,743.93 <br />Indirect Costs: $27,307.61 <br />GRAND TOTAL = $116,051.54 cost/acre for actual) reclaimed land <br />Calculations <br />Backfilling unfilled highwalls <br />Worst case assumption: 8223' of highwall with 1:1 slope and 27.5' mean wall height <br />Total cross-sectional area of 3.5:1 backfilled highwall = 1,323 sq ft <br />Cross-sectional area of 1:1 portion of highwall not needing backfill = 378 sq ft <br />Cross-sectional area of 3.5:1 portion of highwall needing backfill = 945 sq ft <br />Length of backwall needing backfill (worst case) = 2,000 feet <br />Total volume of backfill needed to achieve 3:1 slope = 1,889,750 cu ft <br /> 69,991 cu yds <br />Fill volume = 69,991 cu yds to bring 1:1 to 3.5:1 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 = $52,493.06 <br />TOTAL BACKFILL COSTS = $52,493.06 <br />Notes: this is based on assumption that no backfilling is done in Area A or B. <br />Slope average of 3.5:1:3:1 on E and N slopes; 4:1 on S and W slopes. <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 />