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 SB09 -12
Sheet 2 of 4
Project: Proposed Coal Handling
Location: West Elk Mine, Somerset,
I
Client- Mountain Coal Company
Facilities
CO
Barr Project Number: 06/261004
STANDARD PENETRATION
NATURAL DRY
L)
TEST DATA
DENSITY
w
in
o
\
N blows /ft
(pcf) is
w
MATERIAL DESCRIPTION
o
n
0
>
10 20 30 40
105 115 125
c
n
(ASTM D2488)
n
``
>
z c7 LL
a')
?�
a o
SHEAR STRENGTH, ksf
Water Content, %
0
Qp x UC. 0 TV X
WP WN WL
ij)
VS A VSR O
30
1 2 3 4
20 40 60
LEAN CLAY (CL) Dark grey -black clay with siltstone and coal 30.0
clasts. Some mudstone gravel. Moist.
11
11
I
I
6225--35-
I
I
I
I
I
I
15
I
11
C�
6220--40-
23
p23
1
1
6215--45-
1
16
11
I
I
6210--50-
I
I
I
19
419
6205--55-
WELL GRADED GRAVEL (GW) Siltstone gravel >1.5 with 55.0
fragments.
�:
J.
32
some clay and coal Dry- slightly moist.
32
• �
I
I
6200--60-
continued e a e
-4-4
Completion Depth 92.0
Remarks:
Date Boring Started: 6/29/09
Date Boring Completed: 6/29/09
SAMPLE TYPES
WATER LEVELS
Logged By: BWL
Drilling Contractor: Haztech
m Auger Cutting 'Shelby Tube
While Drilling:
Drilling Method: HSA
Northing:
®Split
Spoon n Rock Core
End of Drilling:
Eastin :
hrs After Drilling:
i ne stratirication lines represent apprmamate boundaries. The transition may be gradual. Revised March 19, 2010