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Agency or organization name : Colorado Division Of Reclalmation Mining And Safety <br />Permit or other job action :Amendment <br />Task description :Reduce Highwalls to 3:1 <br />....... HOURLY EQUIPMENT COST <br />Basic machine : Cat D8R Series 11 - 8SU (200: Horsepower : 310 <br />Blade type : Semi-Universal <br />Attachment no. 1 : ROPS Cab Shift basis : 1 per day <br />Attachment no. 2:3-shank ripper <br />volume : 1,659 BCY factor : 1.330 volume : 2,206 LCY <br /> <br />Source of estimated volume 700 LF c 16' ht, 1:1 to 3:1 <br />Source of estimated swell factor :Decomposed rock 50% rock, 50% earth <br /> <br /> <br />HOURLY PRODUCTION ........ <br />Job Condition Correction Factors <br />Source <br /> Operator skill : 0.75 (avg.) <br />Average push distance : 65 feet Material consistency : 0.90 (Cat HB) <br />Unadjusted hourly production : 1,170.3 LCY/hr Dozing method : 1.00 (gen.) <br /> Visibility: 1.00 (avg.) <br />Material consistency description : Job efficiency : 0.83 (1shift/day) <br />Compacted fill or embankment Spoil pile: 0.80 (fnd-rt) <br /> Push gradient : 1.33 (Cat HB) <br />Average push gradient : 15.00 0 (neg) Altitude : 1.00 (Cat HB) <br />Average site altitude : 6,500 feet Material weight : 0.79 (Cat HB) <br /> Blade type : 1.00 (S/SU/U) <br />Material weight : 2,900 Ibs/LCY Net correction : 0.47 <br />Weight description : <br />Decomposed rock - 50% Rock, 50% Earth <br />Adjusted unit production : 552.69 LCY/hr <br />Adjusted fleet production : 552.69 LCY/hr <br />JOB TIME AND COST <br />Fleet size : 1 Dozer(s) Total job time : 3.99 Hours <br />Unit cost : $0.302 /LCY Total job cost : $667