2011-09-30_PERMIT FILE - C1980007A ‎(6)‎

• Permit No: C1980007A
• IBM Index Class Name: Permit File
• Doc Date: 9/30/2011
• 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
Protect: 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,
m
N in blows /ft m
(pcf) �t
w
MATERIAL DESCRIPTION
a > 0
10 20 30 40
105 115 125
4
i'o
y
n
(ASTM D2488)
=
a
Z C1
>
p
E
2 a o
SHEAR STRENGTH, ksf
Water Content, %
ul
O
CL
E rn
QP X UC 0 TV X
WP WN WL
rn
VS & 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
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
X x
X x
X x
0%
45
X x
X x
x x
X x
X x
6145
X x
X x
x x
X x
X x
X x
0%
50
X x
X x
x x
X x
X x
X x
6140
X x
X x
X X
X X
X x
X x
6%
55
X x
X x
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 x
Continued ex a e
Completion Depth: 75.0
Remarks:
Date Boring Started: 6/25/09
Date Boring Completed: 6/25/09
SAMPLE TYPES
WATER LEVELS
Logged By BWL
Auger Cutting , Shelby Tube
While Drilling:
Drilling Contractor: Haztech
Drilling Method: HSA/CORE
Northing: 403263.5
® Split Spoon Rock Core
D
End of Drilling
Eason 1450468.5
hrs After Drilling: DRY
the stratification lines represent apprwamate boundaries. The transition may be gradual.