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<br />Colorado Division of Minerals and Geology <br />ESTIMATING FORM BULLDOZER RIPPING <br />Task #: 3 Prep. by: RCO Task File Name: M089-3 <br />Date: 02/20/97 Permit #: M-96-089 Mine: Skoglund Pit <br />Permit Action: Reclamation <br />Task Description: Ripping compacted areas - road, staging and stockpile <br />HOURLY EQUIPMENT COST <br />Basic Machine: Cat D8N Horsepower: 285 <br />Blade Type: UNIVERSAL ---------- <br />Attachment #1: ROPS Lab Shift Basis: 1/day <br />Attachment #2: 3-shank ripper ---------- <br />Cost/Hr Breakdown: Utilization % (code O~U) <br />----------------- ownership = f46.68 N/A <br />operating/overhaul - dozer = f51.93 100 <br />-ripper = f6.68 100 <br />operator = f22.95 N/A <br />Total egpt. unit cost/hr = f128.24 Total fleet cost/hr: f128.24 <br />--------- --------- <br />MATERIAL QUANTITIES <br />Selected method Area <br />Seismic Load Bank ----------= <br />method: N/A N/A Factor N/A Volume N/A 8LY <br />Area ----------- ------ ----------- <br />method: 4.00 Acres Rip Depth: 1.00 Volume 6.453 BCY or CCY <br />------- ------- ----------- <br />Source of quantity take off: calculation, permit applic. <br />Source of mat. load factor: N/A <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: 1.00 feet <br />---------- - Avg. ripping width per pass: 7.08 feet <br />Avg. ripping length per pass: 400.00 feet <br />- Avg. velocity of machine 88.00 feet/min. <br />- Avg. machine maneuver time 0.25 minutes <br />- Hourly prod. per unit area 0.813 acres/hr <br />- Unadjusted hourly production: 1,312.35 BCY or CCY/hr <br />Correction Factors -Unadjusted production = 1.312.35 BCY or CCY/hr <br />----------------- -Site altitude = 7.740 feet <br />- Altitude adjustment = 1.00 (Cat tbl) <br />- Job efficiency factor = 0.83 (lsh/day) <br />- Net correction = 0.83 multiplier <br />- Adjusted production = 1089.25 BCY or CCY/hr <br />- Fleet production = 1089.25 BLY or CCY/hr <br />JOB COST <br />Fleet Size 1 Dozers) Total Job Time: 5.92 Hours <br />Unit Cost f0 118 /LCY Total Job Cost: f759.17 <br />