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BULLDOZER RIPPING WORK <br /> Task description: Rip All Surface Facility Areas <br /> Site: Elk Creek Mine Permit Action: MT8 Permit/Job#: C1981022 <br /> PROJECT IDENTIFICATION <br /> Task#: 034 State: Colorado Abbreviation: None <br /> Date: 7/12/2021 County: Delta Filename: 022-034 <br /> User: LDS <br /> Agency or organization name: DRMS <br /> HOURLY EQUIPMENT COST <br /> Basic Machine: Cat D10T- IOSU Horsepower: 574 <br /> Ripper Attachment: 3-Shank Ripper Shift Basis: 1 per day <br /> Data Source: (CRG) <br /> Cost Breakdown: <br /> Utilization% <br /> Ownership Cost/Hour: $169.60 NA <br /> Operating Cost/Hour: $166.94 100 <br /> Ripper Ownership Cost/Hour: $25.19 NA <br /> Ripper Operating Cost/Hour: $13.74 100 <br /> Operator Cost/Hour: $41.30 NA <br /> Total Unit Cost/Hour: $416.77 <br /> Total Fleet Cost/Hour: $1,250.32 <br /> MATERIAL QUANTITIES Selected estimating method: Area <br /> Alternate Methods: <br /> Seismic: NA Bank Volume: NA BCY NA <br /> Area: 70.80 acres Rip Depth(ft): 2.00 Volume: 228,448 BCY or CCY <br /> Source of estimated quantity: Page 2.05-20 <br /> HOURLY PRODUCTION <br /> Seismic: <br /> Seismic Velocity: NA feet/second <br /> Area: <br /> Average Ripping Depth: 2.00 feet/pass <br /> Average Ripping Width: 8.67 feet/pass <br /> Average Ripping Length: 300.00 feet/pass <br /> Average Dozer Speed: 88.00 feet/minute <br /> Average Maneuver Time: 0.25 minutes/pass <br /> Production per unit area: 0.979 acres/hour <br /> Job Condition Correction Factors <br /> Unadjusted Hourly Unit Production: 0.979 Acres/hr <br /> Site Altitude: 6,200 feet <br /> Altitude Adj: 1.00 (CAT HB) <br /> Job Efficiency: 0.83 (1 shift/day) <br /> Net Correction: 0.83 multiplier <br /> Adjusted Hourly Unit Production: 0.81 Acres/hr <br /> Adjusted Hourly Fleet Production: 2.44 Acres/hr <br /> JOB TIME AND COST <br /> Fleet size: 3 Grader(s) Total job time: 29.04 Hours <br /> Unit cost: $512.847 Per acre Total job cost: $36,310 <br /> CIRCES Cost Estimating Software <br />