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BULLDOZER RIPPING WORK <br /> <br />Task description: <br /> <br /> <br />Site: Permit Action: 13C (MT8) Permit/Job#: C1981019 <br />Colowyo Coal Mine <br /> <br />PROJECT IDENTIFICATION <br /> <br />Task #: 003 State: Colorado Abbreviation: None <br />Date: 4/18/2020 County: Moffat Filename: C019-003 <br />User: ZTT <br /> <br /> <br />DRMS <br />Agency or organization name: <br /> <br />HOURLY EQUIPMENT COST <br /> <br />Basic Machine: OBSOLETE - Cat D11R - <br />Horsepower: 850 <br />11SU <br />Ripper Attachment: 1-Shank Ripper Shift Basis: 1 per day <br /> Data Source: (CRG) <br /> <br />Cost Breakdown: <br /> Utilization % <br />Ownership Cost/Hour: $220.12 NA <br />Operating Cost/Hour: $235.69 100 <br />Ripper Ownership Cost/Hour: $27.67 NA <br />Ripper Operating Cost/Hour: $14.78 100 <br />Operator Cost/Hour: $41.24 NA <br /> <br />Total Unit Cost/Hour: $539.49 <br /> <br />Total Fleet Cost/Hour: <br />$1,078.98 <br /> <br />MATERIAL QUANTITIES <br />Selected estimating method: Area <br /> <br />Alternate Methods: <br /> <br />Seismic: NA Bank Volume: NA BCY NA <br />Area: 18.90 acres Rip Depth (ft): 1.50 Volume: 45,738 BCY or CCY <br /> <br />Source of estimated quantity: Table 7 Exh. 13B-T-20 <br /> <br />HOURLY PRODUCTION <br /> <br />Seismic: <br />Seismic Velocity: NA feet/second <br /> <br />Area: <br />Average Ripping Depth: 3.00 feet/pass <br />Average Ripping Width: 7.94 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: 0.897 acres/hour <br /> <br />Job Condition Correction Factors <br /> <br />Unadjusted Hourly Unit Production: 0.897 Acres/hr <br /> <br />Site Altitude: 7,500 feet <br />Altitude Adj: 1.00 (CAT HB) <br />Job Efficiency: 0.83 (1 shift/day) <br />Net Correction: 0.83 multiplier <br /> <br />Adjusted Hourly Unit Production: 0.74 Acres/hr <br />Adjusted Hourly Fleet Production: Acres/hr <br />1.49 <br /> <br />JOB TIME AND COST <br /> <br /> <br />