2017-03-16_REVISION - C1981019

• Permit No: C1981019
• IBM Index Class Name: Revision
• Doc Date: 3/16/2017
• Doc Name: Adequacy Review #2
• From: DRMS
• To: Colowyo Coal Company
• Type & Sequence: TR110
• Email Name: ZTT
• Email Name: JRS
• Media Type: D
• Archive: No

Bulldozer Worksheet Cont'd Task # 025 Page l of 2
BULLDOZER WORK
Task description: Regrade Topsoil for Ditch Dl through 5
Site: Colowyo Coal Mine Permit Action: 13C Permit/Job#: C1981019
PROJECT IDENTIFICATION
Task #: 025
Date: 311512017
User: ZTT
State: Colorado
County: Moffat
Agency or organization name: DRMS
HOURLY EQUIPMENT COST
Basic Machine:
Cat D8T - 8SU
Horsepower:
310
Blade Type:
Semi -Universal
Attachment:
NA
Shift Basis:
1 per day
Data Source:
(CRG)
Cost Breakdown:
Ownership Cost/Hour:
Operating Cost/Hour:
Ripper own. Cost/Hour:
Ripper op. Cost/Hour:
Operator Cost/Hour:
Total unit Cost/Hour: $171.97
Total Fleet Cost/Hour: $171.97
Utilization %
$83.81 1 NA
$0,00
$41.85
70
NA
0
NA
Abbreviation: None
Filename: C019-025
MATERIAL QUANTITIES
Initial Volume:
4,823
Swell factor:
1.000
Loose volume:
4,823 LCY
Source of estimated volume: Exhibit 7-23B, Table 1, Exh. 7 -item 23, Fig. B-1
Source of estimated swell factor: Cat Handbook
HOURLY PRODUCTION
Average push distance:
Unadjusted hourly production:
50 feet
I,400.0 LCY/hr
Materials consistency description: Compacted fill or embankment 0.9
Average push gradient:
Average site altitude:
Material weight:
-20%
7,500 feet
2,650 lbs/LCY
Weight description: Decomposed rock - 25% Rock, 75% Earth
Job Condition Correction Factor
Source
Operator Skill:
0.750
AVG.
Material consistency:
0.900
CAT HB
Dozing method:
1.200 _
(S-BY-S
Visibility:
1.640
AVG.