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

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m
Barr Engineering Company
4700 West 77th Street
BARR Minneapolis, MN 55435 -4803 LOG OF BORING B -3
Sheet 4 of 4
Project: Proposed RPE Expansion
Location: West Elk Mine, Somerset,
Client: Mountain Coal Company
CO
Barr Project Number: 06/261003
STANDARD PENETRATION
NATURAL DRY
iu
TEST DATA
DENSITY
m
w
(D
rn
o
ad
m
? o
N in blows/ft OO
(pcf
w
MATERIAL DESCRIPTION
2
ii
> ❑
10 20 s0 40
105 115 125
. 9
;
w
�
(ASTM D2488)
C
Z x
m
p
°—'
a `o
STRENGTH, ksf
Water Content, %
W
O
E
/ SHEAR
QP X UC A TV X
WP WN WL
VS A VSR O
1 2 3 4
20 40 60
90
SANDSTONE Dark brown- black, some light grey /grey sandstone 90.0
with shale and coal seams.
6275
81%
95
6270
74%
100
100.0
105
110
115
1 120 ]
Completion Depth: 100.0
Remarks:
Date Boring Started: 6/18/09
Date Boring Completed: 6/19/09
SAMPLE TYPES
WATER LEVELS
Logged B BSE
Drilling Contractor: Haztech
Drilling Method: HSA/CORE
m Auger Cutting ,Shelby Tube
While Drilling:
Northing: 402650.2
®
End of Drilling:
Eastin : 1450672.6
Split Spoon Rock Core
hrs After Drilling: 75.28
i ne stratification ones represent apprwamate boundaries. The transition may be gradual.