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-4
Sheet 1 of 2
Project: Proposed RPE E)q)ansion
Location: West Elk Mine, Somerset,
Client: Mountain Coal Company
CO
Barr Project Number: 06/261003
STANDARD PENETRATION
NATURAL DRY
y
TEST DATA
DENSITY
m
N in blows /ft p
(pcf) it
w
MATERIAL DESCRIPTION
a
> 0
10 20 30 40
105 115 125
M
iu
(ASTM D2488)
t
C
>
Z CJ
F
m
p
g
CL o
SHEAR STRENGTH, ksf
Water Content, %
w
O
E
0
Qp X UC A TV X
Wp WN WL
N
VS A VSR O
Surface Elev.: 6386.9
1 2 3 4
20 40 60
0
CLAY (CL -CH) Brown slightly moist clay with silt, sand and
gravel. Minor brown /black coal seaming and sandstone
fragments
6385
5
P2
24
6380
/
10
13
13
6375
I
I
I
15
I
I
k1
15
6370
20
50/
CLAYEY SAND (SC) Brown slightly moist clayey sand with silt. 20.0
50/1
1
6365
-25-
5
SANDSTONE Tan to medium brown sandstone mottled with 25.0
5011
coal dust seams.
::
..
1
1
6360
SANDSTONE Medium brown sandstone with minor clay and 27.0
coal dust seams.
82%
30
Continued Next Pace
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
Northing: 402656.1
® Split Spoon Rock Core
End of Dulling:
Eastin : 1450507.7
hrs After Drilling: DRY
the stratification lines represent approbmate boundaries. The transition may be gradual.