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Colorado Division of Minerals and Geology <br /> ----------------------------------------- <br /> ESTIMATING FORM - BULLDOZER RIPPING <br /> Task #: 009 Prep. by: SGR Task File Name: C017-009 <br /> ----------- -------- _____________ <br /> Date: 11/24/97 Permit #: C-81.017 Mine: Coal Basin <br /> ----------- -------- --------------------------------- <br /> Permit Action: litigation estimate <br /> ------------------------------------------------------------- <br /> Task Description: rip 001 pond roads <br /> ------------------------------------------------------------- <br /> HOURLY EQUIPMENT COST <br /> Basic Machine: Cat D4C SERIES III Horsepower: 81 <br /> Blade Type: POWER ANGLE TILT ---------- <br /> Attachment #1: ROPS Cab Shift Basis: 1/day <br /> Attachment #2: 3-shank ripper ---------- <br /> Cost/Hr Breakdown: Utilization % (code MO) <br /> ----------------- ownership = $10.36 N/A <br /> operating/overhaul - dozer = $15.51 100 <br /> -ripper = $1.77 100 <br /> operator = $22.95 N/A <br /> Total eqpt. unit cost/hr = $50.59 Total fleet cost/hr: $50.59 <br /> --------- _-------_ <br /> MATERIAL QUANTITIES <br /> Selected method Area <br /> Seismic Load Bank- ------------- <br /> method: N/A N/A Factor N/A Volume N/A BCY <br /> Area ----------- ------- _______---- <br /> method: 0.50 Acres Rip Depth: 1.50 Volume 1,210 BCY or CCY <br /> ----------- ------- ----------- <br /> Source of quantity take-off: estimate <br /> ---------------------------------------------------- <br /> Source of mat. load factor: N/A <br /> ---------------------------------------------------- <br /> HOURLY PRODUCTION <br /> Seismic Method - Seismic velocity of material: N/A feet/sec. <br /> ______________ - Unadjusted hourly production: N/A BCY or CCY/hr <br /> Area Method - Avg. ripping depth per pass: 0.79 feet <br /> ----------- - Avg. ripping width per pass: 4.67 feet <br /> Avg. ripping length per pass: 25.00 feet <br /> Avg. velocity of machine 88.00 feet/min. <br /> Avg. machine maneuver time 0.25 minutes <br /> Hourly prod. per unit area 0.301 acres/hr <br /> Unadjusted hourly production: 383.76 BCY or CCY/hr <br /> Correction Factors Unadjusted production = 383.76 BCY or CCY/hr <br /> ------------------ Site altitude = 8,000 feet <br /> Altitude adjustment = 0.88 (Cat tbl) <br /> Job efficiency factor = 0.83 (1sh/day) <br /> Net correction = 0.73 multiplier <br /> Adjusted production = 280.30 BCY or CCY/hr <br /> Fleet production = 280.30 BCY or CCY/hr <br /> JOB COST <br /> Fleet Size 1 Dozer(s) Total Job Time: 4.32 Hours <br /> -------- ____------- <br /> Unit Cost $0.180 /LCY Total Job Cost: $218.37 <br /> -------- ----------- <br />