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BULLDOZER RIPPING WORK <br /> Task description: Rip 10,480 feet of internal roads <br /> Site: Keenesburg Strip Mine Permit Action: SLll Permit/Job#: C1981028 <br /> PROJECT IDENTIFICATION <br /> Task#: CO2 State: Colorado Abbreviation: None <br /> Date: 10/18/2022 County: Weld Filename: CO28-CO2 <br /> User: RDZ <br /> Agency or organization name: DRMS <br /> HOURLY EQUIPMENT COST <br /> Basic Machine: Cat D9T-9SU Horsepower: 405 <br /> Ripper Attachment: 3-Shank Ripper Shift Basis: 1 per day <br /> Data Source: (CRG) <br /> Cost Breakdown: <br /> Utilization% <br /> Ownership Cost/Hour: $146.30 NA <br /> Operating Cost/Hour: $141.41 100 <br /> Ripper Ownership Cost/Hour: $17.01 NA <br /> Ripper Operating Cost/Hour: $8.85 100 <br /> Operator Cost/Hour: $40.04 NA <br /> Total Unit Cost/Hour: $353.61 <br /> Total Fleet Cost/Hour: $353.61 <br /> MATERIAL QUANTITIES Selected estimating method: Area <br /> Alternate Methods: <br /> Seismic: NA Bank Volume: NA BCY NA <br /> Area: 4.80 acres Rip Depth(ft): 1.50 Volume: 11,616 BCY or CCY <br /> Source of estimated quantity: Permit maps <br /> HOURLY PRODUCTION <br /> Seismic: <br /> Seismic Velocity: NA feet/second <br /> Area: <br /> Average Ripping Depth: 1.50 feet/pass <br /> Average Ripping Width: 7.67 feet/pass <br /> Average Ripping Length: 500.00 feet/pass <br /> Average Dozer Speed: 88.00 feet/minute <br /> Average Maneuver Time: 0.25 minutes/pass <br /> Production per unit area: 0.891 acres/hour <br /> Job Condition Correction Factors <br /> Unadjusted Hourly Unit Production: 0.891 Acres/hr <br /> Site Altitude: 4,000 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: 0.74 Acres/hr <br /> Adjusted Hourly Fleet Production: 0.74 Acres/hr <br /> JOB TIME AND COST <br /> Fleet size: 1 Grader(s) Total job time: 6.49 Hours <br /> Unit cost: $478.416 Per acre Total job cost: $2,296 <br /> CIRCES Cost Estimating Software <br />