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Coal Ridge No. 1 Mine C1984065: MT7 <br />SCRAPER TEAM WORK <br />April 14, 2014 <br />Task description: Replace Topsoil from Stockpile to Sediment Pond <br />Site: Coal Ridge No. 1 Mine Permit Action: Midterm Review 7 Permit /Job #: C1984065 <br />PROJECT IDENTIFICATION <br />Task #: 019 State: Colorado Abbreviation: None <br />Date: 4/8/2014 County: Garfield Filename: C065 -019 <br />User: SLB <br />Agency or organization name: DRMS <br />HOURLY EQUIPMENT <br />- Scraper: Cat 621G <br />- Dozer: NA <br />COSTShift basis: 1 per day <br />iption <br />Support Equipment -Load Area: <br />-Dump Area: <br />NA <br />NA <br />Road Maintenance —Motor Grader: <br />-Water Truck: <br />NA <br />NA <br />Cost Breakdown: Scraper Work Team Support EaUiDment Maintenance EaUiDment <br />Total work team cost/hour: $198.40 <br />MATERIAL QUANTITIES <br />Initial volume: 4,678 CCY <br />Loose volume: 5,263 LCY <br />Source of estimated volume: Plate 4 -1 <br />Source of estimated swell factor: Cat Handbook <br />Swell factor: 1.125 <br />HOURLY PRODUCTION <br />Scraper Bowl (volume) Basis <br />Material weight: <br />Scraper <br />Dozer <br />Load Area <br />Dump Area <br />Motor Grader <br />Water Truck <br />%Utilization- machine: <br />100 <br />NA <br />NA <br />NA <br />NA <br />NA <br />Ownership cost/hour: <br />$52.68 <br />NA <br />NA <br />NA <br />NA <br />NA <br />Operating cost/hour: <br />$115.69 <br />NA <br />NA <br />NA <br />NA <br />NA <br />Ripper op. cost/hour: <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />Operator cost/hour: <br />$30.02 <br />NA <br />NA <br />NA <br />NA <br />NA <br />Unit Subtotals: <br />$198.40 <br />NA <br />NA <br />NA <br />NA <br />NA <br />Number of Units: <br />1 <br />0 <br />0 <br />0 <br />0 <br />0 <br />Group Subtotals: <br />Work: <br />$198.40 <br />Support: <br />$0.00 <br />Maint: <br />$0.00 <br />Total work team cost/hour: $198.40 <br />MATERIAL QUANTITIES <br />Initial volume: 4,678 CCY <br />Loose volume: 5,263 LCY <br />Source of estimated volume: Plate 4 -1 <br />Source of estimated swell factor: Cat Handbook <br />Swell factor: 1.125 <br />HOURLY PRODUCTION <br />Scraper Bowl (volume) Basis <br />Material weight: <br />2,550 lbs/LCY <br />Struck Volume: <br />15.70 <br />LCY <br />Material description: <br />Earth - Dry packed <br />Heaped Volume: <br />22.00 <br />LCY <br />Rated Payload: <br />52,800 pounds <br />Average Volume: <br />18.85 <br />LCY <br />Payload Capacity: <br />20.71 LCY <br />Adjusted Capacity: <br />18.85 <br />LCY <br />Page 16 of 28 <br />