2018-03-26_REVISION - C1981019 ‎(2)‎

• Permit No: C1981019
• IBM Index Class Name: Revision
• Doc Date: 3/26/2018
• Doc Name: Adequacy Review
• From: DRMS
• To: Colowyo Coal Company LP
• Type & Sequence: TR118
• Email Name: ZTT
• Media Type: D
• Archive: No

BULLDOZER RIPPING WORK
Task description: Rip 29,458'of Collom Haul Road
Site: Colowyo Coal Mne Permit Action: 13C (TRI 18)
PROJECT IDENTIFICATION
Task#:
Date:
User:
003 State: Colorado
3/13/2018 County: Moffat
ZTT
Permit/Job#: C1981019
Abbreviation: None
Filename: CO19-003
Agency or organization name:
DRMS
feet/second
HOURLY EQUIPMENT COST
Basic Machine: OBSOLETE - Cat D11R -
Horsepower: 850
1 1S
Average Ripping Width:
7.94
Ripper Attachment: 1-ShankRipper
Average Ripping Length:
Shift Basis: 1 per day
feet
Average Dozer Speed:
Data Source: (CRG)
Cost Breakdown:
Average Maneuver Time:
0.25
feet
Productionp er unit area:
Utilization %
Ownership Cost/Hour:
$220.12
NA
Operating Cost/Hour:
$235.69
100
Ripper Ownership Cost/Hour:
$21.79
NA
Ripper Operating Cost/Hour:
$11.30
100
Operator Cost/Hour:
$41.85
NA
Total Unit Cost/Hour:
$530.75
Net Correction:
Total Fleet Cost/Hour: $1,061.49
MATERIAL QUANTITIES
Alternate Methods:
Seismic: NA
Area: 18.90 acres
Selected estimating method: Area
Bank Volume: NA BCY NA
Rip Depth (ft): 1.50 Volume: 45,738 NY orCCY
Source ofestimatedquantity: Table 7 Exh. 13B -T-20
HOURLY PRODUCTION
Seismic:
Seismic Velocity:
NA
feet/second
Area:
AverageRipping Depth:
3.00
mph
Average Ripping Width:
7.94
degrees
Average Ripping Length:
300.00
feet
Average Dozer Speed:
88.00
feet
Average Maneuver Time:
0.25
feet
Productionp er unit area:
0.897
acres/hour
Job Condition Correction Factors
Unadjusted Hourly Unit Production:
0.897
Acres/hr
Site Altitude:
7,500
feet
Altitude Adj:
1.00
(CAT HB)
Job Efficiency:
0.83
(1 shift/day)
Net Correction:
0.83
multiplier
Adjusted Hourly Unit Production:
0.74
Acres/hr
AdjustedHourly Fleet Production:
1.49
Acres/hr
JOB TIME AND COST