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<br />Attachment 3.2. Regrade Calculations for C Pit Addition <br />Blasted Area of C <br />Volume of regrade <br />Push distance <br />Productivity <br />Unadjusted time <br />Performance corre <br />Adjusted time <br />Pit 56 acres <br />material C1) 451,733 lcy's <br />75 feet <br />1800 lcy's/hr <br />251.0 hrs <br />:lion factor 0.65 <br />386.2 hra <br />New Portion of Haul/Walk Road <br />Length of new portion of haul road 200 ft <br />In-place volume of regrade material 3,333 cyds <br />Loose volume of regrade material 4,166 cyds <br />Push distance 58 feet <br />Productivity 2,000 lcy/hr <br />Unadjusted time 2.1 hrs <br />Performance Correction Factor 0.74 <br />Adjusted time 2.8 hrs <br />To [al Regrade hours 389.0 hrs <br />Regrade rate $149.34/hr <br />Regrade cost $58,093.26 <br />(1) Average depth of blast holes @ 50 feet, 10% swell from blast; <br />five feet of heave; CS ft x 56 acres x 43,560 ft2/acre)/27 ft3/yd3 <br />JPII1/ jb 5/87 <br />