2014-08-19_PERMIT FILE - C1980007 ‎(3)‎

• Permit No: C1980007
• IBM Index Class Name: Permit File
• Doc Date: 8/19/2014
• Doc Name: Boring Logs
• Section_Exhibit Name: Exhibit 82 Appendix A
• Media Type: D
• Archive: No

Barr Engineering Company
4700 West 77th Street
BMR Minneapolis, MN 55435-4803 LOG OF BORING B-2
� Sheet 1 of
Project: Proposed RPE Expansion
Location: West Elk Mine, Somerset,
Client: Mountain Coal Company
CO
Barr Project Number: 06/261003
STANDARD PENETRATION
NATURAL DRY
TEST DATA
DENSITY
a
IX
Q \
N in blows/ft OO
(pcf)
i
t
MATERIAL DESCRIPTION
t
T
>
10 20 30 40
105 115 125
'ia
a
(ASTM D2488)
CL
H
a
~
>
m
2
. no
SHEAR STRENGTH, ksf
Water Content, %
LlJ
E
(0
OP X UC 0 TV X
Wa Wry W
M
VS A VSR O
Surface Elev.: 6332.6
1 2 3 4
20 40 60
0
COAL Black, dry coal fragments and dust.
6330-
36
1
5
\
i
6325
i
50/
50/3
1
LEAN CLAY (CL) Medium grey/brown, slightly moist friable stiff 9.0
10
clay with coal fragments, silt and fine sand.
3
6320
50/
»
50/4
SILT (ML) Medium grey dry silt 14.0
15
4
i
F
6315
SANDSTONE Light brown with light grey mottling. Primarily fine 19.0
20
grained with minor medium grains. Minor coal in planes of
weakness.
84%
6310
••
••
i
25
100%
6305
30
Continued Next Page
Completion Depth: 35.0
Remarks:
Date Boring Started: 6/18/09
Date Boring Completed: 6/18/09
SAMPLE TYPES
WATER LEVELS
Logged By: BSE
m Auger Cutting 'Shelby Tube
While Drilling:
Drilling Contractor: Haztech
Drilling Method: HSA/CORE
Northing: 402983.7
® Split Spoon a Rock Core
End of Drilling:
Eastin : 1450669.3
hrs After Drilling: DRY
The stratification lines represent appro)amate boundaries. The transition may be gradual.