PERMFILE56497

• Permit No: C1996084A
• IBM Index Class Name: Permit File
• Doc Date: 10/10/2006
• Section_Exhibit Name: Exhibit 23 Bond Calculations
• Media Type: D
• Archive: Yes

CIRCES Cost Estimating Software
• MOTOR GRADER WORK
PROJECT IDENTIFICATION
Task # : 015 State :Colorado PermiUjob # : C-96-084
Date : 12/14P2004 County :Las Animas Abbreviation :none
User : JRS Sile :Lorencito Canyon Mine Filename :C084-015
Agency or organization name :Colorado Division Of Minerals And Geology
Permit or other job action :Current Permitted Estimate
Task description :Glade BOrrOW Area 2

HOURLY EQUIPMENT COST
Basic machine :CAT 14H Horsepower : 215
Attachment no. 1 :NA Shift basis : 1 perday
Attachment no. 2 : NA
Data source : (CRG)
Utilization
Cost Breakdown Ownership cosUhour : $34.94 NA
Grader operating cosUhour : $42.39 100
Ripper operatingcosUhour: $0.00 NA
OperatorcosUhour: $31.95 NA
Total unit cosUhour $109 28 Total fleet cosUhour $109.28
• ~
MATERIAL
QUANTITIES
Total area to be graded or ripped : 1.90 acres
Source of estimated acreage :Table 2.05.4-1f
HOURLY PRODUCTION
Selected application :Finish grading (0-2.5 mplr)
Average grader speed : 1.25 mph
Selected blade angle : 30 degrees' ' at 0 degrees, blade is perpendicular
Effective blade length : 12.10 feet to direction or travel.
Width of blade overlap per pass : 2.00 feet
Net grading or ripping width per pass : 10.10 feel " "width or ripper beam on ripping applicat ions
Unadjusted hourly unit production : 1.5303 acresmour
Job Condition Correction Factors Source
Average site altitude : 7,100 feet Altitude adjustment factor : 1.00 (Cat HB)
Job efficiency adjustment factor : 0.85 (lsh/d, mod.)
Net job correction : 0.8500 multiplier
Adjusted hourly unit production : 1.3008 acresmour
Adjusted hourly fleet production : 1.3008 acresmour
• JOB TIME$AND COST
Fleet size : 1 grader(s) Total job time : 1.46 hours
Unit cost : $84.01 per acre Total job cost : $160
~3 'I
~.