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Bowie No. 2 Mine C1996083 Midterm Review No. 4 (MT -4) <br />Page 111 of 558 <br />BULLDOZER RIPPING WORK <br />Task description: Rip Regraded Mine Area Prior to Topsoil Replacement <br />Site: Bowie No. 2 Mine Permit Action: Midterm Review 4 Permit/Job #: C 1996083 <br />PROJECT IDENTIFICATION <br />Task #: 063 State: Colorado <br />Date: 10/3/2014 County: Delta <br />User: SLB <br />Agency or organization name: DRMS <br />HOURLY EQUIPMENT COST <br />Basic Machine: Cat D10T - lOSU <br />Ripper Attachment: 3 -Shank Ripper <br />Abbreviation: None <br />Filename: C083 -063 <br />Horsepower: 574 <br />Shift Basis: 1 per day <br />Data Source: (CRG) <br />Cost Breakdown: <br />2.88 <br />mph <br />Average Ripping Width: <br />8.67 <br />degrees <br />Utilization % <br />Ownership Cost/flour: <br />$131.86 <br />Average Dozer Speed: <br />NA <br />Operating Cost/Hour: <br />$184.48 <br />0.25 <br />100 <br />Ripper Operating Cost/Hour: <br />$11.02 <br />acres /hour <br />100 <br />Operator Cost/Hour: <br />$38.01 <br />Unadjusted Hourly Unit Production: <br />NA <br />Total Unit Cost/flour: <br />$365.36 <br />6,500 <br />Total Fleet Cost/Hour: <br />$1,461.44 <br />1.00 <br />MATERIAL QUANTITIES <br />Selected estimating <br />method: Area <br />Alternate Methods: <br />Seismic: NA Bank Volume: NA BCY NA <br />Area: 169.00 acres Rip Depth (ft): 2.63 Volume: 717,078 BCY or CCY <br />Source of estimated quantity: Total Regraded Area (Ripping per Page 2.05 -48) <br />HOURLY PRODUCTION <br />Seismic: <br />Seismic Velocity: NA feet/second <br />Area <br />Average Ripping Depth: <br />2.88 <br />mph <br />Average Ripping Width: <br />8.67 <br />degrees <br />Average Ripping Length: <br />100.00 <br />feet <br />Average Dozer Speed: <br />88.00 <br />feet <br />Average Maneuver Time: <br />0.25 <br />feet <br />Production per unit area: <br />0.861 <br />acres /hour <br />Job Condition Correction Factors <br />Unadjusted Hourly Unit Production: <br />0.861 <br />Acres /hr <br />Site Altitude: <br />6,500 <br />feet <br />Altitude Adj: <br />1.00 <br />(CAT HB) <br />Job Efficiency: <br />0.83 <br />(1 shift /day) <br />Net Correction: <br />0.83 <br />multiplier <br />Adjusted Hourly Unit Production: <br />0.71 <br />Acres /hr <br />Adjusted Hourly Fleet Production: <br />2.86 <br />Acres /hr <br />JOB TIME AND COST <br />Fleet size: 4 Grader(s) <br />Total job time: <br />59.09 <br />Hours <br />