2015-02-18_REVISION - C1981035

• Permit No: C1981035
• IBM Index Class Name: Revision
• Doc Date: 2/18/2015
• Doc Name: Midterm Review Findings Document
• From: DRMS
• To: GCC Energy, LLC
• Type & Sequence: MT7
• Email Name: MLT
• Email Name: DIH
• Media Type: D
• Archive: No

King Mines C1981035 Midterm Review No_ 7 Page 6 of 123
BULLDOZER RIPPING WORK
Task description: King I - Rip 12" in upper facility area
Site: King Coal Mine Permit Action: Midterm Review No. 7 Permit/Job #: C1981035
PROJECT IDENTIFICATION
Task #: 002
Date: 2/11/2015
User: SLB
ieismic:
Area:
State: Colorado
County: La Plata
Agency or organization name:
HOURLY EQUIPMENT COST
Basic Machine: Cat D8T - 8SU
Ripper Attachment: 3 -Shank Ripper
DRMS
Abbreviation: None
Filename: C035 -002
Horsepower: 310
Shift Basis: 1 per day
Data Source: (CRG)
Cost Breakdown:
NA
feet/second
Area:
7,400
feet
Utilization %
Ownership Cost/flour:
$69.05
Average Ripping Width:
NA
Operating Cost/Hour:
$108.22
300.00
100
Ripper Operating Cost/Hour:
$7.46
feet
100
Operator Cost/Hour:
$38.01
Production per unit area:
NA
Total Unit Cost/Hour:
$222.73
Total Fleet Cost/flour:
$222.73
MATERIAL QUANTITIES
Selected estimating method: Area
Alternate Methods
NA Bank Volume: NA BCY NA
1.96 acres Rip Depth (ft):
Source of estimated quantity:
HOURLY PRODUCTION
Seismic:
1.00
I -007
Volume: 3,162 BCY or CCY
Seismic Velocity:
NA
feet/second
Area:
7,400
feet
Average Ripping Depth:
1.00
mph
Average Ripping Width:
7.08
degrees
Average Ripping Length:
300.00
feet
Average Dozer Speed:
88.00
feet
Average Maneuver Time:
0.25
feet
Production per unit area:
0.800
acres /hour
Job Condition Correction Factors
Unadjusted Hourly Unit Production:
0.800
Acres /hr
Site Altitude:
7,400
feet
Altitude Adj:
1.00
(CAT HB)
Job Efficiency:
0.83
(1 shift /day)
Net Correction:
0.83
multiplier
Adjusted Hourly Unit Production:
0.66
Acres /hr
Adjusted Hourly Fleet Production:
0.66
Acres /hr
JOB TIME AND COST
Fleet size: 1 Grader(s)
Total job time: 2.95 Hours