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

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m
Barr Engineering Company
4700 West 77th Street
BARR Minneapolis, MN 55435 -4803 LOG OF BORING B -6
Sheet 3 of 3
Project: Proposed RPE Expansion
Location: West Elk Mine, Somerset,
Client: Mountain Coal Company
CO
Barr Project Number: 06/261003
STANDARD PENETRATION
NATURAL DRY
m
TEST DATA
DENSITY
ID
o
\
N in blows/ft O
(pct)
`'
MATERIAL DESCRIPTION
a
>o
10 zo so ao
105 Its 125
o
>
"8
(ASTM D2488)
a
Z of
'L
B
,
SHEAR STRENGTH, ksf
Water Content, %
W
E
fn
Q P X UC A TV )K
W WN WL
ca
VS A VSR O
e
1 2 3 4
20 40 60
60
SANDSTONE Light grey /grey fine to medium grained sandstone
with minor tan rusting and brown clay seams no more than 2"
thick.
90%
6505
65
::
89%
---------------------------- -.....
SANDSTONE Tan -grey sandstone with coal seams. 65.7
----------------------- - - - - --
.....
51%
6500
SANDSTONE Rusted sandstone. 67.4
SANDSTONE Light grey fine grained sandstone interbedded 69.0
70
with shale.
----------------------------
SANDSTONE Tan -grey fine grained sandstone. 70.7
72%
6495
SANDSTONE Brown -grey fine to medium grained sandstone. 72.3
100%
74.5
75
80
85
90 1
1
Completion Depth: 74.5
Remarks:
Date Boring Started: 6/20/09
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
Northing: 402144.6
® Split Spoon a Rock Core
End of Drilling:
Eastin : 1450500.2
hrs After Drilling:
the stratification lines represent approbmate boundaries. The transition may be gradual.