2010-04-26_PERMIT FILE - C1980007A ‎(6)‎

• Permit No: C1980007A
• IBM Index Class Name: Permit File
• Doc Date: 4/26/2010
• Doc Name: Boring Logs
• Section_Exhibit Name: Exhibit 82 Appendix A
• Media Type: D
• Archive: Yes

Barr Engineering Company
4700 West 77th Street
BARR Minneapolis, MN 55435 -4803 LOG OF BORING B -1
Sheet 2 of 3
Project: Proposed RPE Expansion
Location: West Elk Mine, Somerset,
Client: Mountain Coal Company
CO
Barr Project Number: 06/261003
STANDARD PENETRATION
NATURAL DRY
a
TEST DATA
DENSITY
d
o
( \
N in blows/ft O
(pcf) is
MATERIAL DESCRIPTION
a > ❑
10 20 30 40
105 115 125
o
>
n
(ASTM D2488)
n
H Z�
>
�'
SHEAR STRENGTH, ksf
Water Content, %
W
C7
V)
O X UC A TV )K
Wo WN WL
ip
VS A VSR O
1 2 3 4
20 40 60
30
SANDSTONE Red and tan /grey sandstone.
6160
59%
SILTSTONE Medium -dark red and brown siltstone and altered 34.0
X X
35
shale.
X X
X x
X X
X X
6155-
X x
X X
x X
X X
X
X
0%
40
X X
X x
X X
x X
X X
X x
X x
6150
X x
X x
X X
X x
0%
X X
X X
X x
45
X x
X X
X X
X X
X x
6145
X X
X x
X z
X X
X x
X X
0%
5 o
X x
X X
X X
X X
X x
6140
X x
X x
X X
X x
X x
8%
X x
X X
X x
55
X x
x x
X X
x x
X x
6135-
X x
X x
X X
X x
X x
X x
x X
7%
60
X
X
X x
Gontinued lVext Pace
Completion Depth: 75.0
Remarks:
Date Boring Started: 6/25/09
Date Boring Completed: 6/25/09
Logged By. BWL
SAMPLE TYPES WATER LEVELS
Drilling Contractor: Haztech
While Drilling:
m Auger Cutting ' Shelby Tube
Drilling Method: HSA/CORE
Northing: 403263.5
End of Drilling:
® Split Core
Eastin : 1450468.5
Spoon Rock
hrs After Drilling: DRY
10
The stratification lines represent approbmate boundaries. The transition may be gradual.