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 # 020 Page I of 2
BULLDOZER WORK
Task description: Regrade ditch D1 Lower (00-6+23)
Site: Colowyo Coal Mine Permit Action, 13C Permit/Job#: C1981019
PROJECT IDENTIFICATION
Task #: 020 _ State: Colorado
Date: 3/1512017 County: Moffat
User: ZTT
Agency or organization name: DRMS
HOURLY EQUIPMENT COST
Basic Machine:
Cat DST - 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:
Total Fleet Cost/Hour:
$191.83
$191,83
MATERIAL QUANTITIES
Initial Volume:
634
Swell factor:
1.000
Loose volume:
634 LCY
Utilization %
$83.81 NA
66.17
$0.00
$41.85
100
NA
0
NA
Source of estimated volume: Exhibit 7-23B Table 1, Ex. 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:
0%
7,500 feet
2,650 lbs/LCY
Weight description: Decomposed rock - 25% Rock, 75% Earth
Abbreviation: None
Filename: C019-020
Job Condition Correction Factor
Source
Operator Skill:
0.754
AVG.
Material consistency:
_
0.900
CAT HB
Dozing method:
1.000
(GEN.)
Visibility:
0.800
POOR