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~orado Division of Minerals and Geology • <br />_________________________________________ <br />ESi1NATING FORM - BULLDOZER WORK <br />Task #: 1 Prep, by: NHE Task File Name: M089-1 <br />Date: 12/08/97 Permit #:M-97-089 Mine: Stone Gravel Pi[ <br />Permit Action: 112c application estimation <br />Task Description: Reduce highwaLl to 3H: 1V, Phase I11, 930' of highwall <br />HOURLY EOU IPMENT COST <br />_____________________ Basic Machine: Cat D8N Horsepower: 285 <br /> Blade Type: SEMI-UNIVERSAL --------- <br /> Attachment #1: ROPS Lab Shif t Basis: 1/day <br /> Attachment #2: 3-shank ripper --------- <br />Lost Breakdown: <br />-------------- Utilization Y. <br />Ownership cost/hr = 546,40 N/A <br />Operating 8 overhaul cost/hr- dozer = 551.67 700 <br /> -ripper = 50.00 0 <br />Operator cost/hr 522.95 N/A <br />total egp t. unit cost/hr = 572).02 Total fleet cost/h r: 5721.02 <br />MATERIAL QUANTITIES <br />___________________ <br />___________________ <br />Initial <br />Suell <br />Loose <br />Volume: 2,788.6 L CY Facta r: N/A Volume: 2,788.6 LCY <br />Source of quantity rake-off: attached drawing, "Highwall Reduction Phase III" <br />Source of est. swell factor: NA <br />NWRLY PRODUCTION <br />_________________ Job Condition Correction Factors <br />Avg. push distance: 50 ft. ------------------------ --~----- <br />_ ________ Operator.......... 0.75 (avg.) <br />Unadjusted hourly Mat. consistency.. 1.10 (Cat tbl) <br />dozer production: 1180 LLY/hr Dozing method..... 1.00 (gen.) <br />- -------- Visibility........ 1.00 (avg.) <br />Material consistency: Job efficiency.... 0.83 (1sh/day) <br />Partly consoiida [ed s tockpile Spoil pile factor. 0.80 (fnd-rf) <br />--------------------- ---------------- Push gradient..... 1.33 (Cat tbL) <br />Avg. push gradient: 15.00 Y. (neg) Altitude derati on. 1.00 (Cat tbl) <br />- -------- Xaterial weight... 0.87 (Ca[ [bI) <br />Avg. site altitude: 5880 ft. Blade type........ <br />__ 1.00 <br />_ <br />_____ (S, SU,U) <br />_ <br />Material weight _-____-- <br />2650.00 lb/LLY _______________________ <br />Ne[ Job Correction _ <br />0.63 <br />Mat. Descr.: - -------- ---- ------- <br />Decomposed rock 25: Rock, 75Y. Earth Adjusted Unit Prod.: 745.05 LLY/hr <br /> Adjusted Fleet Production: 745.05 LCY/hr <br />JOB COST ---- ----' <br />Fleet size 7 Dozers) Total Job Time: 3.74 <br />_ <br />___- Hours <br />- <br />Unit Cost _-___-- <br />50.162 /LLY _--- <br />Total Job Lost: _- <br />5452.96 <br />