2010-12-06_REVISION - C1981038

• Permit No: C1981038
• IBM Index Class Name: REVISION
• Doc Date: 12/6/2010
• Doc Name: Midterm Review Cost Estimate
• From: DRMS
• To: Bowie Resources, LLC
• Type & Sequence: MT6
• Email Name: JJD
• Email Name: SB1
• Media Type: D
• Archive: No

CIRCES Cost Estimating Software
COMPACTION WORK
PROJECT IDENTIFICATION
Task #: 034 State : Colorado Permit/job # : C-1981-038
Date : 02-Dec-2010 County :Delta Abbreviation :none
User : JRS Site :Bowie No. 1 Mine Filename : C038-034
Agency or organization name : Colorado Division Of Reclamation, Mining And Safety
Permit or other job action :2010 Midterm Review (MT-6)
Task description : Compact Zones 2-A,C,D and E; 3-A,B and C; 4-A,B and C
HOURLY EQUIPMENT COST
Machine description :CAT 815F
Cost Breakdown : Ownership cost/hour :
Operating cost/hour :
Operator cost/hour :
Total unit cost/hour :
MATERIAL QUANTITIES
Loose Shrinkage
volume : 46Z 727 LCY factor
Horsepower: 240
Compactor type : Soil - tamping foot Shift basis : 1 per day
Utilization % Data source : (CRG)
$44.16 NA
$78.47 100
$38.54 NA
$161.17 Total fleet cost/hour : $161.17
Compacted
0.870 volume : 402,572 CCY
Source of estimated volume: Map 5C-6A and 8A-2
Source of estimated shrinkage factor : CAT Handbook
HOURLY PRODUCTION _
Unadiusted hourlv production = (W x S x L x C) / P
Compacted width per pass (W)
Average compactor speed (S)
Compacted thickness of each lift (L)
Conversion constant (C)
Required number of machine passes (P)
Unadjusted hourly unit production
Job Condition Correction Factors
Site altitude : 7,100 feet
6.42 feet
4.00 mph
8.00 inches
16.3 (5,280 ft./12 in./27 cu.ft.)
3 passes
1,116.22 CCY/hr
Source
Altitude adjustment factor : 1.00 (Cat HB)
Job efficiency factor : 0.83 (1 shift/day)
Net job correction : 0.83 multiplier
Adjusted hourly unit production : 926.47 CCY/hr
Adjusted hourly fleet production : 926.47 CCY/hr
JOB TIME AND COST
Fleet size : 1 compactor(s)
Unit cost $0.174 per CCY
Total job time : 434.52
Total job cost : $70,031
hours