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 -9
Sheet 2 of 2
Project: Proposed RPE Expansion
Location: West Elk Mine, Somerset,
client: Mountain Coal Company
CO
Barr Project Number: 06/261003
STANDARD PENETRATION
NATURAL DRY
u
TEST DATA
DENSITY
w
01
0
od
3
N in blows /ft @
(pcf) is
w
MATERIAL DESCRIPTION
L)
n
> 0
10 20 30 40
105 115 125
w
a
(ASTM D2488)
L
n
`�
>
Z Ct
>
a)
SHEAR STRENGTH, ksf
Water Content, %
u)
O
E
r/)
Qp X UC A TV X
Wp WN WL
in
VS A VSR O
-
1 2 3 4
20 40 60
30
SILTSTONE Light brown /grey very fine grained siltstone 30.0
X X
50/
50/1
interbedded with sandstone.
x x
X x
X x
X x
1
»
X x
X x
X X
98%
6750
X X
x x
-35-
SANDSTONE Medium -light brown /grey fine/very fine grained 35.0
sandstone.
100%
6745
40
40.0
45
50
55
60
Completion Depth 40.0
Remarks:
Date Boring Started: 6/24/09
Date Boring Completed: 6/24/09
SAMPLE TYPES
WATER LEVELS
Logged By: BWL
Auger Cutting ,Shelby Tube
While Drilling:
Drilling Contractor: Haztech
Drilling Method: HSA/CORE
Northing: 401190.5
®Split Spoon a Rock Core
End of Drilling:
Eastin : 1450809.9
hrs After Drilling:
The stratification lines represent approbmate boundaries. The transition may be gradual.