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 -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
TEST DATA
DENSITY
o
\
N in blows /ft O
(pcf)
MATERIAL DESCRIPTION
a
> 0
10 20 30 40
105 115 125
0
0
0
(D
(ASTM D2488)
a
F LL
d
E
d
(L`o
SHEAR STRENGTH, ksf
Water Content, %
W
O
E
N
Q X UC A TV )K
W WN WL
to
VS o 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
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
m Auger Cutting ,Shelby Tube
While Drilling:
Drilling Contractor: Haztech
Drilling Method: HSA/CORE
Northing: 401190.5
® Split Spoon Rock Core
End of Drilling:
Eastin : 1450809.9
hrs After Drilling:
1b
go
the stratification lines represent approbmate boundaries. The transition may be gradual.