2018-01-11_REVISION - C1981019

• Permit No: C1981019
• IBM Index Class Name: Revision
• Doc Date: 1/11/2018
• Doc Name: Adequacy Review - Preliminary
• From: DRMS
• To: Colowyo Coal Company
• Type & Sequence: RN7
• Email Name: ZTT
• Media Type: D
• Archive: No

Bulldozer Worksheet Cont'd Task # 025 Page 1 oft
BULLDOZER WORK
Task description: Rearade Topsoil for Ditch D1 through 5
Site: Colowyo Coal Mine Permit Action: 13C Permit/Job#: C1981019
PROJECT IDENTIFICATION
Task #: 025 State: Colorado
Date: 311512017 County: Moffat
User: ZTT
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. Cast/Hour:
Ripper op. Cost/Hour,
Operator Cost/Hour:
Total unit Cost/Hour:
Total Fleet Cost/Hour:
$171.97
$171.97
Utilization %
$83.81 NA
$46.32 70
$0.00 NA
$0.00 0
$41.85 1 NA
MATERIAL QUANTITIES
Initial Volume: 4,823
Swell factor: 1.000
Loose volume: 4,823 LCY
Source of estimated volume: _Exhibit 7-23 B, Table 1, Ex_h. 7 -item 23, Fig. B-1
Source of estimated swell factor: Cat Handbook
HOURLY PRODUCTION
Average push distance: 50 feet
Unadjusted hourly production: 1,400.0 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
Abbreviation: None
Filename: C019-025
Job Condition Correction Factor
Source
Operator Skill:
0.750
AVG.
Material consistency:
0.900
_
LCkT HB
Dozing method:
1.200
S -BY -S
Visibility:
1.000
AVG.