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 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
a?
o�
o
-a
N in blows /ft ®
(pcf) �t
w
MATERIAL DESCRIPTION
n
> 0
10 20 30 40
105 115 125
(ASTM D2488)
a
F
o
SHEAR STRENGTH, ksff
Water Content, %
uJ
O
E
N
Qp X UC A TV X
WP WN WL
VS A 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
Q1
6185--
I
I
I
I
-10--
CLAY (CLZI) Medium -dark brown moist clay with silt, sand 10.0
I
I
19
and sandstone/granite gravel.
19
6180
/
I
I
15
WELL GRADED SAND (SW) Brownish -red slightly moist sand
10
10
wrath dark grey lenses. 15.7
LEAN CLAY (CL) Medium brown /grey slightly moist lean day
6175
with red and orange clay inclusions.
20
50/
SILTY SAND WITH GRAVEL SM Light brown very fine 20.0
( ) 9 ry
50/1
grained slightly moist silty sand with red sandstone gravel.
1
SANDSTONE Red and tan /grey sandstone. 21.5
6170
39%
25
6165
::
24%
30
Continued Next Pace
Completion Depth. 75.0
Remarks:
Date Boring Started: 6/25/09
Date Boring Completed: 6/25/09
SAMPLE TYPES
WATER LEVELS
Logged By BWL
m Auger Cutting 'Shelby Tube
While Drilling:
Drilling Contractor: Haztech
Drilling Method: HSA/CORE
Northing: 403263.5
® Split Spoon a Rock Core
End of Drilling
Eastin : 1450468.5
hrs After Drilling: DRY
9�
the stratification lines represent appropmate boundaries. The transition may be gradual.