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

Barr Engineering Company
4700 West 77th Street
BARR Minneapolis, MN 55435 -4803 LOG OF BORING B-4
Sheet 1 of 2
Project: Proposed RPE Expansion
Location: West Elk Mine, Somerset,
Client: Mountain Coal Company
CO
Barr Project Number: 06/261003
STANDARD PENETRATION
NATURAL DRY
a
TEST DATA
DENSITY
w
CD o
Ix
\
N in blows/ft m
(pcf) it
w
MATERIAL DESCRIPTION
o
ii
> 0
10 20 30 40
105 115 125
(ASTM D2488)
Z
m
m
a o
SHEAR STRENGTH, ksf
Water Content,
W
C7
E
V)
O X UC A TV )K
WP WN WL
Surface Elev.: 6386.9
rn
VS A VSR O
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
Nz�
fragments.
6385
5
P 2
24
6380
/
10
413
13
6375
I
I
I
15
I
I
01
15
6370
♦
- 20-
50/
CLAYEY SAND (SC) Brown slightly moist clayey sand with silt. 20.0
50/1
1
6365
25
50/
SANDSTONE Tan to medium brown sandstone mottled with 25.0
50/1
coal dust seams.
::
1
6360
— - -- -- -- -- --
:.
SANDSTONE Medium brown sandstone with minor clay and 27.0
coal dust seams.
82%
30
Continued Next Page
Completion Depth: 35.0
Remarks:
Date Boring Started: 6/22/09
Date Boring Completed: 6/22/09
Logged By. BSE
SAMPLE TYPES WATER LEVELS
Drilling Contractor: Haztech
While Drilling:
Auger Cutting 'Shelby Tube
Drilling Method: HSA/CORE
Northing: 402656.1
End of Drilling:
®
Eastin : 1450507.7
Split Spoon Rock Core
hrs After Drilling: DRY
10
10
10
The stratWiication lines represent approiamate boundaries. The transition may be gradual.