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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Barr Engineering Company
4700 West 77th Street
BARR Minneapolis, MN 55435 -4803 LOG OF BORING B -1
� Sheet 1 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
TEST DATA
DENSITY
w
o
0
M
N in blows/ft O
(pcf)
w
MATERIAL DESCRIPTION
0
a
> 0
10 20 30 40
105 115 125
•
�
(ASTM D2488)
F of
°
SHEAR STRENGTH, ksf
Water Content, %
Lu
C7
E
N
O X UC n, TV W
WP W WL
M
VS & VSR O
Surface Elev.: 6192.2
1 2 3 4
20 40 60
0
CLAY (CL -CH) Light -dark grey slightly moist clay with sand,
gravel and roots. Black carbonaceous zones.
6190
5
16
T1
6185
I
I
I
I
10
CLAY (CL -CH) Medium -dark brown moist clay with silt, sand 10.0
I
I
19
and sandstone/granite gravel.
19
6180-
/
/
15
GRADED SAND (SW) Brownish -red slightly moist sand
111 11
0
10
A WELL
w;th dark grey lenses. 1 15.7
LEAN CLAY (CL) Medium brown/grey slightly moist lean day
6175
with red and orange day inclusions.
20
50/
SILTY SAND WITH GRAVEL (SM) Light brown very fine 20.0
.`
grained slightly moist silty sand with red sandstone gravel.
1
,@50/1
SANDSTONE Red and tan /grey sandstone. 21.5
6170
39%
25
6165
24%
30
Continued Next Page
Completion Depth: 75.0
Remarks:
Date Boring Started: 6/25/09
Date Boring Completed: 6/25/09
SAMPLE TYPES
WATER LEVELS
Logged By. BWL
Drilling Contractor: Haztech
Drilling Method: HSA/CORE
Auger Cutting ,Shelby Tube
While Drilling:
Northing: 403263.5
®Split Spoon n Rock Core
End of Drilling:
Eastin : 1450468.5
hrs After Drilling: DRY
I ne stratmcation lines represent appro)amate boundaries. The transition may be gradual.