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

•
a
c
0 0 0
M
Barr Engineering Company
4700 West 77th Street
BARR Minneapolis, MN 55435 -4803 LOG OF BORING B-4
� 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
ry
TEST DATA
DENSITY
C
0
ca
3 \
N in blows/ft @
(Pcf)
o
t
MATERIAL DESCRIPTION
L
°;
z 0
10 20 30 40
105 115 125
io
a
(ASTM D2488)
a
�-
°'
SHEAR STRENGTH, ksf
Water Content, %
LLl
O
U)
Qp X UC A TV X
WP WN WL
VS A VSR O
1 2 3 4
20 40 60
30
SANDSTONE Medium brown sandstone with minor clay and
coal dust seams.
6355
83%
35
35.0
40
45
50
55
60
Completion Depth: 35.0
Remarks:
Date Boring Started: 6/22/09
Date Boring Completed: 6/22/09
SAMPLE TYPES
WATER LEVELS
Logged By. BSE
m Auger Cutting ,Shelby Tube
While Drilling:
Drilling Contractor: Haztech
Drilling Method: HSA/CORE
End of Drilling:
Northing: 402656.1
®Split Spoon n Rock Core
Eastin : 1450507.7
hrs After Drilling: DRY
the stratification lines represent approbmate boundaries. The transition may be gradual.